Author Topic: What did you do to your bike today ?  (Read 3220026 times)

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Offline Powderman

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Re: What did you do to your bike today ?
« Reply #16150 on: December 14, 2013, 07:14:07 PM »
Well my intention is to make the 750 my "rider". The 450 just does not cut it on the interstate. It keeps up fine but an hour in and my whole body is numb and it gets really wound up, like 7000-8000 rpm cruising. Its going to go on out of state trips so I would like a little more oomph for interstate riding passing at high speeds etc (anyone who's been on i-75 FL or ATL knows what I mean.) and so I could keep the rev's down a little. Not trying to make it a works engine or anything. Just figured since the kits were cheap on ebay and I'm already gunna have the engine out, why not give it a go eh?
Last time I went from Atl. to Orlando most of the way on I-75 south of Atl. the slow lane was doing 80mph. I did most of that trip in a pack of cars doing near 100. North of Atl. to Orlando in 6 hours. I got pulled over doing 87 because the cop who was just finishng writing someone else a ticket said I didn't slow down and move left when I went by him. He let me go after I was honest with him and said " I did slow down........ a bunch, and couldn't move over because of the traffic to my left going just as fast." lol
« Last Edit: December 14, 2013, 07:26:56 PM by Powderman »

Offline Carver

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Re: What did you do to your bike today ?
« Reply #16151 on: December 14, 2013, 07:53:44 PM »
yeah, exactly  ;D the further south here you get the scarier it is. The howard franklin bridge is nothing short of a drag strip and in miami the lights mean absolutely nothing.
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Offline Terry in Australia

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Re: What did you do to your bike today ?
« Reply #16152 on: December 15, 2013, 01:16:06 AM »
Well my intention is to make the 750 my "rider". The 450 just does not cut it on the interstate. It keeps up fine but an hour in and my whole body is numb and it gets really wound up, like 7000-8000 rpm cruising. Its going to go on out of state trips so I would like a little more oomph for interstate riding passing at high speeds etc (anyone who's been on i-75 FL or ATL knows what I mean.) and so I could keep the rev's down a little. Not trying to make it a works engine or anything. Just figured since the kits were cheap on ebay and I'm already gunna have the engine out, why not give it a go eh?

Those eBay kits are cheap, and good quality too, from my experience. What isn't cheap here is boring your cylinders 4mm to accept the new pistons, 300-400 bucks thank you very much.

I imagine it'd be cheaper in the US, but make sure you budget for the machining, a new base gasket, (you get a head gasket with the kit but no base gasket) new rubber pucks for under the cam towers, new exhaust gaskets, and while you're at it, it won't hurt to replace your cam chain and tensioner assembly.

Of course, if your 750 isn't blowing smoke or leaking heaps of oil there's probably nothing wrong with it, and over-boring it 100cc's won't really make much of a difference on it's own. Cheers, Terry. ;D
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Offline Carver

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Re: What did you do to your bike today ?
« Reply #16153 on: December 15, 2013, 05:52:07 AM »
Hmmmm I thought the standard bore would accept the 836. I don't know why I think I read it somewhere? if thats the case I think I might buy one while it's cheap and just put it away until I need it.
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Offline MCRider

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Re: What did you do to your bike today ?
« Reply #16154 on: December 15, 2013, 06:41:27 AM »
Hmmmm I thought the standard bore would accept the 836. I don't know why I think I read it somewhere? if thats the case I think I might buy one while it's cheap and just put it away until I need it.
The standard "sleeves" will accept an 836 overbore. The sleeves don't have to be changed, but you still have to bore the sleeves that are there.

If you want to go higher, you press out the standard sleeves, bore the aluminum cylinders, press in new larger  steel sleeves, and bore them.

Get it?
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Offline Powderman

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Re: What did you do to your bike today ?
« Reply #16155 on: December 15, 2013, 08:26:48 AM »
Terry, around these parts $50 a hole is the general going rate for boring the cylinders. The CB400 466 kits is only $120 but, like you say, the expense comes in when it's another $200 to bore. Don't know about the 836 kit for the 750, but the 466 kit leaves almost no taper at the bottom of the sleeve making piston installation a pain. Anything bigger in sleeve would require machining of the bores in the cases also which I think would be even more expensive than the cylinder boring.

Offline Stev-o

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Re: What did you do to your bike today ?
« Reply #16156 on: December 15, 2013, 08:33:22 AM »
Finished installed the new 4-4 exhaust on the Z1 and took it for a spin!




Looking fantastic Steve, now get that sucker painted, that horrible paint scheme offends me so! ;D


Thanks Uncle Terry and so sorry to offend you!   I'll get right on the paint, but can't decide on Candy Super Red or Candy Super Blue, the stock colors for the '75.  I'm sure you have an opinion!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline ekpent

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Re: What did you do to your bike today ?
« Reply #16157 on: December 15, 2013, 10:33:29 AM »
Looks great with those pipes Steve and the paint scheme looks nice in the pics also. I see your license plate starts with a large AU, is that to pay homage to Terry   ;D

Offline Stev-o

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Re: What did you do to your bike today ?
« Reply #16158 on: December 15, 2013, 10:43:00 AM »
Looks great with those pipes Steve and the paint scheme looks nice in the pics also. I see your license plate starts with a large AU, is that to pay homage to Terry   ;D

Thanks Eric. Yes, the AU and the custom paint is just for Terry!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline bj

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Re: What did you do to your bike today ?
« Reply #16159 on: December 15, 2013, 10:46:45 AM »
Spent 2 hours putting on my carbs and the farkin' airbox that the PO had removed. The Honda engineer responsible for this design was a sadist.  Now I know why people run pods.
CB550K1, CB350K4, CB350K4 race, '81 Passport

Offline bjbuchanan

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Re: What did you do to your bike today ?
« Reply #16160 on: December 15, 2013, 01:08:10 PM »
I use this guy for the boring job on my 836 kit. Good work and he fitted up the rings and squared them away as part of the package. 150, plus you work out shipping to him. I did USPS flat rate for 17$ to him, 35$ back but his packaging was much much better than mine. It did take a month for the whole trip tho so you instant gratification guys won't be very happy

I was looking at 85 a whole, plus the possibility they may have wanted to tack on another 15 for the size of the overbore so I said screw them. Cyclex also bores at a decent price too

http://www.ebay.com/itm/Kawasaki-Suzuki-Yamaha-Honda-Four-Cylinder-Boring-/250003511909?pt=Motorcycles_Parts_Accessories&hash=item3a355eda65&vxp=mtr

The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline Powderman

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Re: What did you do to your bike today ?
« Reply #16161 on: December 15, 2013, 01:15:33 PM »
Good price but by the time you ship both ways and wait for a month I could get it locally in a day for $200. No machine shop should bore without fitting the pistons and honing for the price.

Offline Stev-o

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Re: What did you do to your bike today ?
« Reply #16162 on: December 15, 2013, 03:33:22 PM »
I use this guy for the boring job on my 836 kit. Good work and he fitted up the rings and squared them away as part of the package. 150, plus you work out shipping to him. I did USPS flat rate for 17$ to him, 35$ back but his packaging was much much better than mine. It did take a month for the whole trip tho so you instant gratification guys won't be very happy

I was looking at 85 a whole, plus the possibility they may have wanted to tack on another 15 for the size of the overbore so I said screw them. Cyclex also bores at a decent price too

http://www.ebay.com/itm/Kawasaki-Suzuki-Yamaha-Honda-Four-Cylinder-Boring-/250003511909?pt=Motorcycles_Parts_Accessories&hash=item3a355eda65&vxp=mtr



Thanks for the referral. I dont know a shop locally [yet]
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline bjbuchanan

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Re: What did you do to your bike today ?
« Reply #16163 on: December 15, 2013, 04:04:29 PM »
Good price but by the time you ship both ways and wait for a month I could get it locally in a day for $200. No machine shop should bore without fitting the pistons and honing for the price.

YOU can get it locally for that price, a lot of those places are gone now or charge in line with the more expensive people now. Believe me I wish I could have gotten it for 200 locally
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline Powderman

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Re: What did you do to your bike today ?
« Reply #16164 on: December 15, 2013, 04:08:51 PM »
We've discussed it on other forums and the general consensus was $50 a hole. $400 is pretty steep and I feel for anyone that has to pay that as no other choice in your area. If your local place is that high then this guy for $150 would be a deal. Just plan accordingly for the time frame. It was cheap enough for me to just buy a second set of cylinders so I don't have any downtime waiting on the machine work. I paid $25 for a set of CB400f cylinders on ebay.
« Last Edit: December 15, 2013, 04:11:37 PM by Powderman »

Offline Terry in Australia

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Re: What did you do to your bike today ?
« Reply #16165 on: December 15, 2013, 04:36:25 PM »
Terry, around these parts $50 a hole is the general going rate for boring the cylinders. The CB400 466 kits is only $120 but, like you say, the expense comes in when it's another $200 to bore. Don't know about the 836 kit for the 750, but the 466 kit leaves almost no taper at the bottom of the sleeve making piston installation a pain. Anything bigger in sleeve would require machining of the bores in the cases also which I think would be even more expensive than the cylinder boring.

Yeah mate, 50 bucks a hole is fairly common here, but that's for only a couple of passes with the boring bar, for 1st or 2nd oversize. Probably around 2 hours work to do a rebore for 1st or second oversize for an SOHC4.

My old Repco boring bar will only do 10 thou max cuts, so if you wanna go 4 mm (160 thou) that's around 16 passes on the bar per cylinder, (over 1 hour per cylinder) or I pop the sleeves out and hog 'em out to 64mm on my lathe and then reinstall them and bore the last 1mm (4 passes) on the boring bar to get them perfect.



My machine was only ever meant to do little singles or twins, but I have used it to bore out a set of Suzuki GS1000 cylinders to 1085cc (73mm) with good results. To get it to machine the inside cylnders on a big four I need to slide the bar out to the max on it's stand and I always worry that it might affect alignment, so yesterday I chopped a damaged CB750 cylinder block in half on my band saw and heated it up in my industrial oven, (I'd never press a sleeve in or out Ron, that's asking for trouble IMHO) then dropped a sleeve in, and once cooled, I bored it, and it "feels" better with the machine slid all the way back on the stand, but that might just be psychological, ha ha! Cheers, Terry. ;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 Icarus

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Re: What did you do to your bike today ?
« Reply #16166 on: December 15, 2013, 08:04:01 PM »
Cruised around with a handful of Hondas today.  My 400f was still acting up at idle once it got hot though.
Sorry about the IG filter, grabbed it from someone else's photo.


Left to right, '95 honda nighthawk, '72 CL350, '75 CB400f, '72 CB175
1975 CB400F
1977 CB550K
avatar is a previous moto project

Offline PeWe

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Re: What did you do to your bike today ?
« Reply #16167 on: December 17, 2013, 03:28:57 AM »
Got a box with fresh tank and side covers, brand new :D (plus some other small parts such as an oil cap/stick with thermometer.)

The color look slightly darker than I remember my bike had from the very beginning. The paint fulfill the name of the color much better though. It look very good!

« Last Edit: December 17, 2013, 03:33:17 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 70CB750

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Re: What did you do to your bike today ?
« Reply #16168 on: December 17, 2013, 03:42:54 AM »
^^^ Me likes it!
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Offline evanphi

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Re: What did you do to your bike today ?
« Reply #16169 on: December 17, 2013, 05:39:59 AM »
what a beautiful blue!
--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
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Offline WhyNot2

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Re: What did you do to your bike today ?
« Reply #16170 on: December 17, 2013, 07:14:23 AM »
Got a box with fresh tank and side covers, brand new :D (plus some other small parts such as an oil cap/stick with thermometer.)

The color look slightly darker than I remember my bike had from the very beginning. The paint fulfill the name of the color much better though. It look very good!




...purdy...........!!!!!!!!

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Re: What did you do to your bike today ?
« Reply #16171 on: December 17, 2013, 07:28:55 AM »
I made an xmas list of bike parts  :D
I also popped on to Bikebandit last night to make use of the Cyber Monday deals, mostly because I noticed they had the turn signal buzzer in stock. (I know, I'm one of the weird ones who likes the thing!) Today they let me know it was forever out of stock. We'll see if they update the site too.

Ah well, I still got a set of tank mount rubbers out of the deal. Still bummed, I was super excited to have a buzzer that didn't sound like someone was trying to drown it.  :P
I hunted down the buzzer as well, you're not alone there....

I just ordered a new buzzer from CMS in the Netherlands after getting a mail that they got some in (it was on my watch list).

http://www.cmsnl.com/honda-cb750k7-four-usa_model14395/buzzer-winker_38400341674/


Offline edwardmorris

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Re: What did you do to your bike today ?
« Reply #16172 on: December 17, 2013, 09:09:43 AM »
Very nice! Please be sure to add some pix when you install and wire the buzzer, could use the info when I reassemble mine.

Wobbly

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Re: What did you do to your bike today ?
« Reply #16173 on: December 17, 2013, 10:06:45 AM »
Very nice! Please be sure to add some pix when you install and wire the buzzer, could use the info when I reassemble mine.

There is nothing to it: brown and black cable, buzzer stuffed in the cramped headlight case along with all the other wiring.

Offline flybox1

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Re: What did you do to your bike today ?
« Reply #16174 on: December 17, 2013, 10:15:04 AM »
UPS delivered my new crank and rod bearings yesterday.
Crank shells @ partzilla were under $9 ea  8)  My local honda parts dept wanted $15 ea!!
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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