Author Topic: Magpie's CB750F DOHC Project (Read 16925 times)

Magpie · « **Reply #75 on:** May 01, 2012, 08:27:33 PM »

Thanks guys! I don't know how it compares to a SOHC yet, I haven't ridden it on the street. It should be faster because it has more hosepower. On the DOHC sites they talk about all the servicing of the valves (shims), the weak charging system and the rattling clutch. I think the SOHC is a stronger, less complex machine. At a recent large swap meet there were a number of SOHC4's of all sizes and only 2 DOHC's. I'm a fairly large guy so the DOHC may fit me better. I should be able to report back soon, I hope. Cliff.

grcamna2 · « **Reply #76 on:** May 01, 2012, 08:38:30 PM »

Cliff,
Do you want that valve cover gasket & do you need valve shims..yet ? I have them if wanted.

Magpie · « **Reply #77 on:** May 01, 2012, 10:40:57 PM »

i haven't got to there yet, I suspect this motor has been apart not long before it was parked. It's quite quiet. Having said that what are the gasket and shims worth? Cliff.

grcamna2 · « **Reply #78 on:** May 02, 2012, 07:38:23 AM »

Cliff,
I have the gaskets(the main large one & the bolt hole rubber gaskets)..I'll give you a deal,your a forum member.I'll have to look at them when I'm in storage...I'm leaving here on the 14th of this month & then everything will sit in storage for a month or so.
I have the shims in a numbered shim box w/ the price ea. ...,I'll give the shims to you for 1/2 price of new once you map out the correct sizes for all 16.I recommend you take it for a good high rpm blast before you let her cool off to measure them(blow off a little carbon from the seats)to get the most accurate reading and go by the book.I think you should also order a valve shim remover tool and use either a mic or read the shim # that may still be printed on the bottom of them.
Either way, I'll do 1/2 price of new..or less;I just checked price; I'll sell you the main gasket for $16 and the 8 round ones for $2.50 ea..so $36 + shipping for the gaskets. EDIT: I only have 7 round bolt gaskets..so less $2.50
If you haven't mapped out the valve shim sizes yet,I can sell you the valve cover gaskets at this point right now..because I'm loading up my storage on Mon. May 7 and won't have room to dig around in there for my shim kit any more until I move everything from storage down to GA. in possibly Jul. at the latest.I have the gaskets in a place set aside in case you want them.I'd ship US Post the cheapest way in a small box to you.

fastbroshi · « **Reply #79 on:** May 02, 2012, 10:51:28 PM »

I'm so jealous, the only free bikes that ever come my way are total basketcases that I would have to put back together piece by piece. I dream of the day someone throws a free RC30 my way

grcamna2 · « **Reply #80 on:** May 03, 2012, 05:50:21 AM »

Quote from: fastbroshi on May 02, 2012, 10:51:28 PM

I'm so jealous, the only free bikes that ever come my way are total basketcases that I would have to put back together piece by piece. I dream of the day someone throws a free RC30 my way

I'm with you on that guy ! I'm hoping to find an original "barn find" CB550K0-K1 when that time comes...;I just need to be patient and it'll come my way eventually

Magpie · « **Reply #81 on:** May 03, 2012, 08:05:36 AM »

Good morning grcamna2! Thanks for the offer on the gaskets and shims but could it wait until your move is done? Things are tightening up for me a bit and it's not the right time to buying stuff for future use right now, embarrassing but true unfortunately. If things get better soon I'll just send the cost of the gaskets and we can figure out the shipping when you dig them out of storage. How would that be?
Free bikes? The F is the third one so far. A CB750K0 and a 1964 150 Benly too. I had to go get them which involved some time and cost but gifts. However, sometimes free can be very expensive. See my build thread in my signature. Cliff.

grcamna2 · « **Reply #82 on:** May 03, 2012, 12:43:16 PM »

Sure you can Cliff..let me know when you need them.

Magpie · « **Reply #83 on:** May 03, 2012, 01:12:36 PM »

Thanks! Cliff.

Magpie · « **Reply #84 on:** May 18, 2012, 05:31:16 PM »

Approved for a Collector plate ! What that means is $167 for 6 months of full insurace coverage and I can apply for a multi-bike Collector plate that can be moved from bike to bike for much less than the cost of insuring them separately. Happy days! Cliff.

DarkRider · « **Reply #85 on:** June 08, 2012, 05:00:27 PM »

Nice build!...Now im wondering if they have a collector bike plate here in Sask...hmmm will need to look into that for the CB900 im buying at the end of the month..

Magpie · « **Reply #86 on:** June 26, 2012, 07:50:07 PM »

I haven't posted for awhile so here's a catch up. I've injured some nerves in my next causing huge pain down my left arm and loss of strength so no riding for I don't know how long -dammit. Tylenol 3's help. Business is slow and money is tight so I thought I would putter away at making the bike nicer, like take the foot pegs off, clean 'em, paint 'em and put them back on. No money spent to speak of, the bike looks better and some mental therapy as well.
I scored some mounts so I'll start on them. Here's the results of an hour or so with a buffing wheel and some Autosol. Further updates to follow.
Thanks for listening. You guys are great! Cliff.

thrutheframe · « **Reply #87 on:** June 29, 2012, 02:09:22 AM »

Quote from: Magpie on June 26, 2012, 07:50:07 PM

I haven't posted for awhile so here's a catch up. I've injured some nerves in my next causing huge pain down my left arm and loss of strength so no riding for I don't know how long -dammit. Tylenol 3's help. Business is slow and money is tight so I thought I would putter away at making the bike nicer, like take the foot pegs off, clean 'em, paint 'em and put them back on. No money spent to speak of, the bike looks better and some mental therapy as well.
I scored some mounts so I'll start on them. Here's the results of an hour or so with a buffing wheel and some Autosol. Further updates to follow.
Thanks for listening. You guys are great! Cliff.

Sorry to hear that you have been injured. I went through the same thing in 2005 and in 2004 I had two herniated discs in my back that paralyzed me from the knees down. The good news is I'm mostly normal these days and I can ride and wrench and chase girls. I'm sure you can get back to riding form.
The peg mounts look great. My own DOHC project has been somewhat stalled due to my work schedule. Luckily my buddy isn't expecting his bike back until September. When ever I get a few days off I usually only have 2 or 3 hours at a time to work on the bike for him.
Stay tough in your head and your body will follow. I was told I'd never walk again and that I'd inevitably need more surgeries but aside from some numbness in my right foot and a little bit of a limp when I get tired, I'm back to causing trouble like always.

Magpie · « **Reply #88 on:** June 29, 2012, 07:56:57 AM »

Thanks for that! It was a stupid thing, trying to pull a tree out of a large pot. I must have closed down on the nerves then pulled on them - bad thing to do. 4 weeks and the pain is about the same but a bit more strength in my arm. I went to the emergency department at the local hospital yesterday because it just seemed too painful for too long. They just said it was normal for what I had done and tough it out. So, here I sit, in pain, getting ready for work and another $50 physio treatment and about to take 2 Tylenol 3's with breakfast.
However, I did clean up and repaint the driver's and passenger pegs as well as the seat mounts on the bike. I don't want to do too many obvious things as it will make the rest of it look shabby.
The mounts I did will go on when the winter comes and I pull the motor to get it looking better. This was just to be a daily rider in good condition but my obsessive compulsive disorder is starting to kick in. I can't leave well enoug alone, kind of like poking a sleeping cat with a stick.
With any luck I can ride in August. We have a trip planned for the coast highway from Port Angeles in Washington to Eureka California and back - want to hug some redwoods.
Cliff.

fastbroshi · « **Reply #89 on:** July 01, 2012, 10:01:32 PM »

Have you let a chiro have a go? I had a bad time with my neck earlier in the year. It just seemed to get worse and worse until one day I literally couldn't turn my head more than 5 degrees either way. I went to the chiro and after what can be best described as a painful orgasm in my neck, I'm well on my way to recovering.

thrutheframe · « **Reply #90 on:** July 02, 2012, 08:09:54 AM »

Broshi I agree but caution Cliff to make sure he has the chiropractor take X-rays BEFORE the adjustment. My neck surgery was inevitable but it was brought on by a neck adjustment gone wrong. I was having stiff neck issues and went to a chiro that I trusted and declined the X-rays because my insurance wouldn't cover them. He cracked my neck and that same day I was in the ER with terrible pain in my neck and right hand. Turns out I had a huge bone spur in my neck that would have shown up in the pics.

Magpie · « **Reply #91 on:** August 20, 2012, 04:41:13 PM »

Long time, no post. Finished with the physio and chiro, just about 6 sessions with the chiro. I'm not sure about chiros and highly skeptical especially their business model. Anyway, the pain is pretty much gone. I went for a nice 2 hour and a bit ride on the Goldwing and I'm good. I still have an appointment with a neurologist and having an MRI done but so far very good.

I rubbed Back To Black on the Shoei FM-2 fairing the bike came with and not sure of the look of it. It should be painted though as the fibers in the fiberglass really glisten in the sun. It's like the gel coat has gone away. I haven't ridden it yet but will soon. What do you think of it?
Thanks, Cliff.

Magpie · « **Reply #92 on:** September 08, 2012, 07:19:30 AM »

Done for now. I'll pull the motor this winter and clean up the frame, new paint and decals. It's a fun bike to ride.
grcamna2, I'll be in touch for the gaskets later this year if you still have them. Cliff.

ekpent · « **Reply #93 on:** September 09, 2012, 06:05:48 AM »

So you have had it out a little on the road Cliff ? A neighbor of mine had one like that I would borrow occasionally for him.Any thoughts to pass along compared to the SOHC for folks as in performance,ride etc. She sounds like she is a keeper.

Magpie · « **Reply #94 on:** September 09, 2012, 07:11:52 AM »

Hi Eric! Yes, it's a keeper. I haven't seen another one on the road since I got it. With the Mac exhaust system it's certainly louder then the stock SOHC 750 exhaust. More power so it's quicker I think although I haven't really burned through the gears with it. It's a much bigger bike. The distance from the front of the seat to the steering head is greater. It seems to fall into the corners and handles nicely. The distance from the pegs to the the top of the seat seems less but I'll have to measure that one. My long legs seem to be bent more at the kness and hips so my hip joints burn if I don't do some stretches before riding - old age setting in. It's a very different bike. More younger people must have started out on the DOHC's then the SOHC's because I get a lot more comments from the young ones and lots of thumbs up. In my mind it doesn't have the cache of the SOHC bikes because it's close to the UJM era. I read a road test which compared it to the hot Ducati of the day and the Honda came out ahead.
So far I'm enjoying riding it and I can park it anywhere without worrying about it but that may change when I tart it up. The DOHC's are growing on me but only the F models. The CB1100F is quite a bike. Having said that there's lots of reports of cam chain failure and subsequent serious engine damage.
It's certainly a much more complex bike needing more attention that the SOHC's. Valve adjustment is to been done every 5000 miles with shims needed, and new cover gasket and rubber seals around the valve cover bolts. The carbs are far more complex.
The forums, CB1100f.net and DOHC Customs are both very good, like ours here, but much fewer members and posts.
i am enjoying it however a K8 blew by me last night with low bars and stock exhaust. it sounded and looked great so my heart is still in the right place.
Oyster Run in 2 weeks,it will be interesting to so how many old Hondas will be there. We take the Goldwing, it's just much more comfortable for 2 old farts. Here's a video of it https://www.youtube.com/watch?feature=player_embedded&v=SoD3igvSlK4 If you watch closely you'll se a tall good looking guy standing beside a lamp post looking cool and aloof - that's me waiting for the rest of the crew to come out of the restaurant.

Cheers,
Cliff.

70CB750 · « **Reply #95 on:** September 09, 2012, 12:16:32 PM »

Nice looking bike! She reminds me of CBX750 or RC17 I had in Prague - loved that thing. Fully loaded - me,wiife and luggage she would cruise Germans Autobahns all day long - passing at 6th gear.

thrutheframe · « **Reply #96 on:** September 09, 2012, 04:08:04 PM »

It's a sweet ride. I have become really fond of Jeremy's Super Sport. The tall seat height kinda threw me off at first but once I got used to leaning it over in the turns I really started to love the feel of the bike.

Magpie · « **Reply #97 on:** April 03, 2013, 09:59:19 PM »

I've been riding this bike and enjoying it a lot and still puttering with it. I'm not sure if I want to do a full blown restoration but I'm adding stuff as it comes along. I came across a pair of footpeg/muffler mounts that had good warning labels, so I cleaned them up and put them on tonight. Cliff.

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Author Topic: Magpie's CB750F DOHC Project (Read 16925 times)