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Author Topic: 1982 CB750F... The resto-not  (Read 33483 times)

Offline irk miller

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Re: 1982 CB750F... The resto-not
« Reply #150 on: Dec 16, 2018, 17:23:30 »
+1.  I've helicoiled a plug or two, unfortunately.   Fortunately, those bikes were bought dirt cheap for such an easy fix.  Many, if not all, auto parts stores sell helicoil kits specifically for spark plugs.  Everything together in a pre-packaged kit.

Offline pidjones

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Re: 1982 CB750F... The resto-not
« Reply #151 on: Dec 16, 2018, 21:45:54 »
The 750 site folks advocate looser valves - .004 to .005and avoiding .002 even though it is in Honda spec. Particularly the exhaust valves are prone to burning if too tight appearantly. On the front adjuster lock - once you put a new o-ring on it, only tighten it and the lock nut with two fingers on the wrench. Very easy to strip (as you've found) or break (as mine was).
"Love 'em all.... Let God sort 'em out!"

Offline ex119x

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Re: 1982 CB750F... The resto-not
« Reply #152 on: Dec 17, 2018, 02:57:55 »
.002 is just a little too tight for me on those motors. I like the exhausts at a loose .003 - loose.004. As far as the forks go, if you don't want to spend the money on emulators and straight weight springs, then I think Progressive Suspension springs and slightly heavier oil, 20 wt, is an OK way to go. On street bikes I feel like the progressive springs and good oil do a pretty good job. On the race track I prefer emulators and straight weight springs, although I have both set-ups in the garage at the moment.

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #153 on: Dec 17, 2018, 11:24:56 »
Excellent info - I'll look into the emulators further for sure.  I like the idea of having a fully tuneable system in the forks - especially given Montreal's highly questionable road surfaces.  My shoulders aren't what they used to be - whatever I can do to absorb our bombed-out roads the better.  I'll do some more homework on the Progressive springs too - it seems like both options have their merits.  The bike will definitely be taken out for some pretty spirited riding but nothing too crazy - just want to make it as comfortable as possible.

I'll also go the helicoil route, and probably with the head in place.  Helicoil over TimeSert?  I used a TimeSert on the last CB (for a stripped tensioner bolt thread).  Take my time, do it right the first time.

There's a guy not far from me who's my go-to for parts and general knowledge on all things moto - he also as a bag of shims which he lets me swap out if I need any.  I'll loosen up the exhaust valves by a few 000's - think I should loosen up the intakes as well?  Anything I can do to get the old girl breathing better.

Chopped off the rear subframe and de-tabbed the frame -





I'm going to bend up a new seat hoop, a bit longer than the last CB, so my wife has a slightly better perch.  I really dig the lines on this bike already - need to design a seat that looks the part but is much comfier than the brat seat on Rhonda -

 

I love chopping stuff up.  I love that part.  Continued apologies to anyone offended by this bike mis-representing in the Restorations section - I know I know.  It's a charlatan.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #154 on: Dec 17, 2018, 11:39:38 »
Also trying to decide if I'm going to keep the centre stand.  I'm kinda loving it even though it's a bit of lump.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline canyoncarver

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Re: 1982 CB750F... The resto-not
« Reply #155 on: Dec 17, 2018, 11:40:37 »
Also trying to decide if I'm going to keep the centre stand.  I'm kinda loving it even though it's a bit of lump.

Heavy and ugly but man they are handy.

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #156 on: Dec 17, 2018, 11:48:10 »
Heavy and ugly.  And that's being polite!

Otherwise I might muck about with the rear axle somehow, extend it so that I can hoik up the rear end on one of those snazzy race bike rear wheel lifts.  They always make you look like you know what the hell you're doing.
« Last Edit: Dec 17, 2018, 11:49:56 by The Jimbonaut »
"I'm telling you Donnie, nuthin' but nuthin' but right"

Online wozza

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Re: 1982 CB750F... The resto-not
« Reply #157 on: Dec 17, 2018, 18:12:36 »
Heavy and ugly.  And that's being polite!

Otherwise I might muck about with the rear axle somehow, extend it so that I can hoik up the rear end on one of those snazzy race bike rear wheel lifts.  They always make you look like you know what the hell you're doing.
Dont do that :) ....the main use for the paddock stand is to remove the rear wheel :) weld some tabs to the swing arm and get some stand off's....Or remove the spring ect for the stock center stand so its easy to remove after use

Offline teazer

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Re: 1982 CB750F... The resto-not
« Reply #158 on: Dec 17, 2018, 18:29:10 »
Or get some longer bolts for the shock lower mount and fit spools on those. Easy peasie

Offline 1fasgsxr

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Re: 1982 CB750F... The resto-not
« Reply #159 on: Dec 17, 2018, 18:45:33 »
+1 ^^ What teazer said.^^  that's what I did
http://www.dotheton.com/forum/index.php?topic=41083.0

Life is a journey from the maternity ward to the crematorium....