Author Topic: Terry Bob's redneck F-ing K2 bitsa project!  (Read 209539 times)

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Offline grcamna2

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1525 on: March 26, 2021, 10:59:16 AM »
Terry,when I watched the video,you mentioned that the Kokusan electronic ignition comes with a timing light ?
75' CB400F/'bunch o' parts'
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Do your BEST...nobody can take that away from you.

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1526 on: March 26, 2021, 05:28:40 PM »
Thanks guys, and sadly not ready for a pie run yet Per, next time you see it on the road, it'll have K0 carbs, Lester wheels, different handlebars, seat etc, and once the weather fines up, a new coat of paint. I'm hoping that it'll be as nimble and responsive as the K0, with just a bit more grunt. We'll see.

Bill, the Kokusan has a red LED mounted on the ignition plate/circuit board. When installing it, you connect the power wire, but not the yellow or blue signal wires. With the ignition turned on the led lights, then you rotate the crank until the LED goes off, and (hopefully) that corresponds with the "F" mark on the advancer lining up with the fixed timing mark on the engine case. If it doesn't, you just keep moving the ignition plate one way or the other until it's spot on. You can also dynamically time it with your timing light with the engine running, but I couldn't remember where I put my beautiful new timing light, so I haven't done that yet.

Here's a pic of the ignition assembly, the little red LED on the top left is the inbuilt timing light. ;D

K0 Thursday 25 Feb 2021 2 by Terry Prendergast, on Flickr
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline grcamna2

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1527 on: March 26, 2021, 05:33:25 PM »
Terry,Made in Japan? I like that feature.  8)
75' CB400F/'bunch o' parts'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1528 on: March 26, 2021, 06:00:03 PM »
Terry,Made in Japan? I like that feature.  8)

Yes mate, made in Japan, I had no idea who Kokusan were until I started building my Kawasaki Z1-B last year and discovered that Kokusan made all the electrics for Kawasaki, so their stuff must be pretty good. I've got a Dyna S coming which I'll probably put in the "Fake K0 Rat bike", which will probably not be all that ratty by the time I finish it, I might need to rename it....... ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline PeWe

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1529 on: March 26, 2021, 10:57:52 PM »
I searched for Kokusan ignition. CMSNL and DSS sell them.
Probably good sh!t.
Nice feature with LED indicator for initial timing.

I'm sure the stock advance springs must be tightened by cutting them 1/2 wound as I have to do when making Pamco ignition to run correct at idle and full advance at right rpm, not too early.
Worked well with later Dyna-S and stock points.

My K2 with stock points had to get same mod. Not possible to get timing correct without. Tried 2 different advancers.

You have new coils too, Terry?
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1530 on: March 27, 2021, 12:46:04 AM »
Yes Per, I bought some cheap Chinese "Magna" coils, which are identical to Dyna 5 Ohm coils, along with Bosch leads and NGK D7EA plugs with 1mm gap, and it kicks out a nice fat blue spark, compared to the pissy yellow spark the stock points and coils struggle to produce. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline PeWe

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1531 on: March 27, 2021, 01:41:41 AM »
Old stock coils are also 45-50 years old! Young for a rider, but coils no.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1532 on: March 27, 2021, 04:28:49 AM »
Anyhoo, today I started phase 1 of the "K2 Bitsa makevover". When I originally built this bike the basic concept was a stock CB750 engine in a bike that had all the 1970's "Cruiser" accessories, the stepped seat, the 16 inch rear wheel, lowering blocks on the rear shocks, pullback bars, etc etc.

Over the last four years since I built it from a bare frame and an engine I bought on Face ache, the bike has morphed a tad, with the Henry Abe wheels with big fat tyres, Delkevic pipe, and recently, a complete engine rebuild with 836cc Wiseco kit and mild street cam. It still has carb issues, but the new Kokusan electronic ignition and high energy coils has improved the ignition out of all sight, so it's getting closer to becoming a street weapon.

The stepped seat and pullback bars aren't all that comfortable at speeds above 60 MPH, the single front disc brake is not great, and I have a great set of Lester wheels with twin cast iron drilled front discs sitting in my garage gathering dust. Now that the "Fake K0 Rat" has arrived in my driveway, I have another bike that I can donate those "Old School" aftermarket parts to, while updating the Bitsa to a more relevant 1970's "Sports bike" that is both sure footed, and comfortable.

Now before I can install the Lesters I need my new custom rear sprocket that I only ordered from the US yesterday, plus the brake pads for both front calipers to bed in on the new cast iron disc rotors, the MC rebuild kit, and a few other bits, so today I concentrated on something that I could actually achieve while leaving the bike rideable. (with some conditions)

First thing was the pullback bars had to go. I've got Apes on the "Rat K0" so don't need two cruisers, so ratted thru my collection of handlebars and found a nice set of low "Euro bars" that with a little scrubbing, came up nice and clean. I farted around for the best part of an hour to find some shorter throttle cables without success and then decided that it makes little difference as these carbs are coming off as soon as James' K0 carbs arrive anyway.

I somehow managed to break the throttle tube but I had a new Honda one, so installed that, along with new genuine Honda grips, mainly because how well they grip the bars. They don't have the nice soft feel of the Oury grips I had previously, but once on, they don't move. Nothing is as disconcerting as having your hand grip come off in your hand, mid corner. The only cable I needed to change was the clutch cable and that was a good thing, the new shorter cable was a new one that I bought years ago, but was too short, but perfect for my "new look" K2 bitsa. 

I also swapped the seats over between it and the Rat. It's a good K1 seat with a crap cover that I bought from a member here years ago, I've since bought a better K1 cover, so when I get time I'll swap them out, and install the stainless steel hardware that's been hanging up for the last 250 years, and the strap as well. Anyway, that was as far as I got, but I'm really happy with the result, it looks so different, but good different, if you know what I mean?

K2 Bitsa Saturday 27 Mar 2021 7 by Terry Prendergast, on Flickr

K2 Bitsa Saturday 27 Mar 2021 9d by Terry Prendergast, on Flickr

Of course as soon as I turned the fuel on, it pissed out of the overflow tubes and no amount of tapping the float bowls helped, so even though James is sending me a set of K0 carbs in the next couple of weeks, I decided I need to ride it now, so I pulled out another set of carbs, stripped them and threw them in the ultrasonic cleaner.

K2 Bitsa Saturday 27 Mar 2021 9 by Terry Prendergast, on Flickr

I'll pull them out tomorrow and give them a good wash out, then dry them, hit them with the WD40 and reassemble them, and hopefully they'll be better than the ones on it now. I'll have to get up early and get all that done before I take one of the bikes to the Heathcote Bakery. ;D

     


I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline seanbarney41

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1533 on: March 27, 2021, 06:14:40 AM »
Terry, you need to post a picture with all your cb750s and their names.  I have become totally confused .  ahhh these 1st world problems....!
If it works good, it looks good...

Offline grcamna2

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1534 on: March 27, 2021, 10:12:09 AM »
Terry,I like the new look of the Bitsa.
Where do you get those custom tooth size sprockets from ?
75' CB400F/'bunch o' parts'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline PeWe

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1535 on: March 27, 2021, 01:01:39 PM »
Terry, you need to post a picture with all your cb750s and their names.  I have become totally confused .  ahhh these 1st world problems....!

I asked him about all his CB750 since I have lost the count. In the half arsed K0 ... thread.


You need to describe all your CB750's with names and status ;D
4, 5 or 6?
1x F2
2x K0 (1 real + 1 fake)
K2. Really only one?

I do not remember which you sold and not.

Ha ha, OK, current bikes in my garage as follows:

1970 K0 (my favourite)
1971 K1 (in pieces)
1971 K0 (fake, the featured one in this thread)
1972 K2 Bitsa (with recently rebuilt engine)
1972 K2 (to be delivered in the next two weeks, floods permitting)
1977(?) K7 (at Spotty's place, Spotty is buying it back)
1978 F2.

So, there's 7 CB750's that are more or less complete, but I also have another K2 frame coming down from Brisbane to build into a complete bike using parts from the "Fake K0" to build a rat. That still leaves several engines and frames around the place, but may or may not ever be built into bikes, I might just keep them for parts. ;D
« Last Edit: March 27, 2021, 01:04:37 PM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1536 on: March 27, 2021, 04:26:31 PM »
Terry, you need to post a picture with all your cb750s and their names.  I have become totally confused .  ahhh these 1st world problems....!

Ha ha, yeah, I confuse myself Sean, and there's two more CB750 builds coming up, so there'll be 6 or 7 750's in the garage soon, I won't count the K7 because Spotty is buying it back from me. Anyhoo, the K2 bitsa last looked like this:

Terry’s K2 Bitsa misery 20 Feb 2021 by Terry Prendergast, on Flickr

But now looks like this.

K2 Bitsa Saturday 27 Mar 2021 7 by Terry Prendergast, on Flickr

Once my custom rear sprocket arrives from the US, I'll install the Lesters, and put the Henry Abe's on the K2 "Rat" which will get a new name as it slowly morphs into something a little cleaner.

K2 Bitsa Saturday 27 Mar 2021 9a by Terry Prendergast, on Flickr

The K0 is pretty much done now, I installed the tank that I painted 5 months ago, and it looks and goes great.

K0 Friday 19 Mar 2021 2 by Terry Prendergast, on Flickr

And of course, I still have the Effing F2, which I think I'll sell to help fund the next K2 build/Harley purchase deal I'm doing with a mate:

F2 K0 Saturday 28 Nov 2020 2 by Terry Prendergast, on Flickr

This is the K2 that's on it's way down from far north Queensland, it should be here in a week or so.

Terry's new CB750K2 by Terry Prendergast, on Flickr

On top of that "JustJohn" here is sending me a K1 frame from the US so I can finally build my early K1, at the moment the other parts are scattered throughout my garage. Lots more CB750 builds coming up! ;D
 
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline bear

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1537 on: March 27, 2021, 06:10:07 PM »
How's the frame getting here Uncle Tez, postage or freight?
The older I get the faster I was.

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1538 on: March 27, 2021, 06:24:57 PM »
The K1 frame will be Fedexed out from Florida Brian, and the K2 and the K2 frame (Gladstone and Brisbane) are being freighted down by FFS Transport. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline RAFster122s

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1539 on: March 27, 2021, 06:47:32 PM »
It is the swapping of body sets Terry has been doing which makes you think you are watching for the pea in a shell game...
David- back in the desert SW!

Offline PeWe

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1540 on: March 27, 2021, 11:33:05 PM »
Your K0 is a real beauty, the K2 has now a really tough attitude and still very much CB750, a good modification today as back in the days.
The F2 look like a  summer day in that nice blue color.
I hope tha tank is no longer leaking.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1541 on: March 28, 2021, 04:16:57 AM »
Thanks Per, no, the F2 tank doesn't leak a drop. It's a pity that the carbs do though, so eventually, before I sell it, I'll have to take them back off and give them a good clean, I installed rebuild kits in those carbs last year, so leaking fuel pisses me off.

Today was the best of days, and the worst of days. I'd planned to reassemble the carbs on the K2 before my Heathcote pie run, so got up early for me on a Sunday, at 8am. I cooked a breakfast of egg and bacon on home made bread toasted with butter and Maasdam cheese, with fried button mushrooms on the side.

Sunday K2 Bitsa ride 28 Mar 2021 by Terry Prendergast, on Flickr

Then I topped the lot with baked beans and tomatoes.

Sunday K2 Bitsa ride 28 Mar 2021 1 by Terry Prendergast, on Flickr

It was a truly delightful, and possibly healthy, repast. I wandered out and reassembled another set of carbs for the K2. I replaced the return spring with a hardware store spring and it felt a little lighter than the OEM spring, although that might just be wishful thinking. I was about to pull the tank and everything off the K2 so I could install them, when my wife asked me to come around the front of the house.

Laying on our path at the front of our house was the big black cat that had followed my son home a few months ago, dead. He was still warm, I assume he'd been hit by a car when crossing the street to come to our place for breakfast, and he'd made it to the path before he expired. That pretty much ruined my day.

Midnight 2 by Terry Prendergast, on Flickr

Midnight 1 by Terry Prendergast, on Flickr

He was a lovely boy, he'd often wander down the driveway when I was working on one of the bikes and just flop down beside me, just to keep me company. My bikes didn't frighten him, the only things he didn't like was my air compressor and ultrasonic cleaner, but I could fire up any of my bikes and he wouldn't run off, like our other cats do. I'm gonna miss him. I dug a hole under a tree and buried him in the hoodie that my son gave him to sleep on, and a toy he'd bought him. I haven't told my son yet, he's moved back to Sydney and is living on his own, so I don't want to make things any harder for him, like me, he's a big softie.

Anyway, life goes on. I installed the carbs, and while I had the left sidecover off decided to replace the starter solenoid. When I built this bike I didn't have a spare OEM one so I bought an Ebay cheapie, and while it worked fine, the threaded lugs that the starter cables go on were made from the softest of copper or brass, and the threads were stripped, and the lugs were loose. I ratted thru my tubs of parts and found a good looking solenoid, and bolted it in place, hit the button, and....... nothing. Damn. OK, I did some more ratting, found another one in another tub that looked pretty tatty, so I connected it up without bolting it in place, and it worked fine. I cleaned it up and bolted it in place.

I replaced the airbox and tank, turned on the petcock and was rewarded with not one drop of fuel on the concrete underneath, thank God. I hit the button and it fired up immediately, and quickly settled into a fairly smooth idle. By this stage it was after 2 PM, and didn't feel like doing a pie run, but still wanted to go for a ride, so I did a quick 60 miler to see how it went. It went really well. No missing, no farting, no fuel pissing out under the bike, just a nice crisp throttle response, plenty of power, the riding position was fine, and the new tyres stuck pretty well in the occasional rainy patches. All in all, it was a great ride.

Sunday K2 Bitsa ride 28 Mar 2021 7 by Terry Prendergast, on Flickr

But......... and there's always a "but", the oil pressure worries me. It starts cold and the gauge sits on 70 psi, and as I'm moving thru traffic for the first 10 minutes or so, will sit on 60 psi @ 4000 RPM. After that, it'll drop down to 40-50 psi. It rarely falls below 40 psi, but I can't for the life of me understand why? I've replaced the oil pump with one that I personally disassembled and measured the rotor clearances etc and I know it's fine, it has new main and big end bearings, no oil leaks, and regardless of what the oil pressure gauge (either gauge) tells me, it runs great. The only thing I can think of is the damage to one of the oil pump screw mounts caused by the previous "builder". The screw barely holds in the remains of the thread, but the other two screws hold the pump in place fine.

K2 oil pump mount by Terry Prendergast, on Flickr

Could there be an oilway between the screw hole and the pump mount? I'll have to check another set of cases and see. If there is I suppose I could fix it in place, I could use some JB Weld "Steel Stick" stuff which is oil resistant and semi-solid, so won't run like regular JB Weld. As long as I can make sure it's entirely oil free (I'll drop the pan and let it drip out overnight, then thoroughly clean with acetone prior to applying the JB Weld) and bolt the oil pump back in place as the JB weld is setting to ensure a good seal, but if it's not the problem, what is? I'm stumped.

Anyway, I came home, parked the bike, opened a Ginger Joe and toasted the memory of "Midnight", the cat. We'll leave his little kennel out the front in case any other strays wander into our life, and need somewhere safe to stay for awhile.

K2 F2 by Terry Prendergast, on Flickr 
 
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline PeWe

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1542 on: March 28, 2021, 06:50:13 AM »
That oil pressure is like my bikes. Must be OK.
Sorry for your black furry friend.
« Last Edit: March 28, 2021, 11:57:54 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline grcamna2

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1543 on: March 28, 2021, 11:10:07 AM »
Terry,I'm sad to hear about 'Midnight'.There are heartless people behind steering wheels out there,be careful.
75' CB400F/'bunch o' parts'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline RAFster122s

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1544 on: March 28, 2021, 12:30:41 PM »
Terry so sorry to read of this...sorry for your loss. It is hard losing a pet or a friend,  am sure you built a bond and love for your feline friend no matter how short the relationship. I can feel that pain and totally understand. I hope your son is able to handle it appropriately.
David- back in the desert SW!

Offline RAFster122s

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1545 on: March 28, 2021, 12:43:43 PM »
So, as far as the oil pressure goes, are the oil jet restrictors in the head been messed with? So, pop a new oil pressure gauge or one off another bike to double check things that you are not dealing with a dodgy gauge. The pressure is measured from a port not long after the pump. That pressure is built by the restrictions in the oil passage ways and bearings. You have good bearing and no way anyone messed about with oil passage ways unless there is a busted part in the cases or up in the head...you noticed none of that.
The cam towers on the cb750 have a role in the pressure don’t they?
Basically this is a game of figuring out where I’m the oiling system, or where are all the cumulative places, does the oil pressure depend upon to establish the pressure reading?

Short of tearing the motor down and comparing things to see where the differences are I wonder how to go about determining the culprit.  The oil is reaching the top end in sufficient quantities to prevent oil starvation and metal to metal contact as well as sufficient volume to cool the motor?
David- back in the desert SW!

Offline 754

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1546 on: March 28, 2021, 01:19:37 PM »
  Sorry to hear about the cat..
 The real name of the FFS  Shipper, Is it  Fer Fecks Sake ..?
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Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1547 on: March 28, 2021, 01:58:20 PM »
Thanks guys, the oil pressure thing is a mystery. If it’s not raining I’m gonna ride it into the city this morning, and see how it handles more stop/go traffic. It is warm after a ride, but isn’t making any disturbing noises. When I rebuilt the engine I scrubbed the cases clean and removed all the oil passage caps then flushed them with high pressure water, removed the oil jets in the head and back flushed them, and stripped and reassembled the oil pump after measuring the rotor clearances which were well within spec.

This is the first time I’ve ponied up the dough for “Motorcycle specific” oil, I’ve used cheap car oil for years, and often added Moreys or Lucas oil conditioners (thickeners) so I’m thinking of dropping a pint of oil out and putting a pint of Moreys in, just so I know a film of lube is sticking to all the components.

Yep, still sad about Midnight, he was a lovely boy, and will be missed. Frank, I assume that’s where FFS Transport got their name, it’s a well used phrase here. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

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Offline BenelliSEI

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1548 on: March 28, 2021, 03:00:54 PM »
Terry..... sorry about the cat. It hurts.

Before you eat to far into the oil pressure issue: Swap the gauge from a bike that runs “better pressure”. My favourite K1 starts out a +70lbs and then sits at 50-60 all day (except at HOT idle, it will drop to 5-10 psi and then shoot right back, as I set off). When my son’s K4 showed some weird readings, I “borrowed” the K1 gauge and swapped it in. Problem solved, binned the K4 gauge......
« Last Edit: March 28, 2021, 03:06:10 PM by BenelliSEI »

Offline Terry in Australia

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Re: Terry Bob's redneck F-ing K2 bitsa project!
« Reply #1549 on: March 28, 2021, 04:48:36 PM »
Thanks Trevor, I bought a new “Marshall” (better quality made in USA) gauge and it reads slightly higher than the old one, but still too low for my liking. I intended to install an oil cooler anyway so I’ll fit that this week, high comp bikes with thin cylinder walls run a bit hotter than stockers in my experience, and I’ll also drop half a litre of Lucas oil thickener which I used to do religiously when I had my old BMW R100RS’ to quieten the valve train, not that it’s an issue on this bike, which for the first time in many years is running really well.

I just don’t want to ruin all my good work by overheating it, I melted the top end in my first K1 in 1981 due to a “mechanic” slathering silicon over the old gaskets rather than doing the job properly and using new gaskets, which he still charged me for. That destroyed the cam, cam towers, rockers, shafts, pistons and cylinders. It’s got a new cam and Wiseco 836cc pistons so I don’t want to ruin them while I’m trying to work it out. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)