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Author Topic: 1982 CB750F... The resto-not  (Read 33206 times)

Offline Maritime

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Re: 1982 CB750F... The resto-not
« Reply #530 on: Apr 16, 2019, 14:53:20 »
for sure, 15% is 15% and I'll give that to anyone when I can't take advantage of it.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #531 on: Apr 25, 2019, 13:58:44 »
Finally heard back from the machine shop - the cylinder/piston clearances are right at the outer edge of spec - pre hone.  So that's that decision made.  If the jugs need to be bored then why the hell not go all out - 823cc piston kit here I come.  Because whoever said "why?" to "more horsepower sir?"
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline CrabsAndCylinders

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Re: 1982 CB750F... The resto-not
« Reply #532 on: Apr 25, 2019, 16:48:53 »
I think you will be happier with bigger pistons.
Lighter, Quicker, Faster.
ZX-14, 900F x 2, 1100F, R100, CBR600, SR500, GT500, RZ350, KZ1000 x 2, Moto Guzzi Lemans lll, CBX550, RD 350, 750 SOHC police special, RG250, TL1000R, GT750, KTM Super Duke 1290 R, Harris/Z-1, Norton 750 Commando, Green 77 KZ650

Offline Nybz

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Re: 1982 CB750F... The resto-not
« Reply #533 on: Apr 26, 2019, 03:39:00 »
I have installed but not run my pistons from them. (I should get on that)
When the machine shop measured them, only one was slightly different then the rest.
I havenít heard any horror stories, with lots of people using them, so I figured itís all good






Sent from my iPhone using DO THE TON
1979 CB750 LTD collectors plates
1979 CB750 K current custom rebuild
1980 CB750 F in waiting...

Past bikes
1982 GL1100
1980 CB400

Offline cb250nproject

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Re: 1982 CB750F... The resto-not
« Reply #534 on: Apr 26, 2019, 06:24:32 »
Finally heard back from the machine shop - the cylinder/piston clearances are right at the outer edge of spec - pre hone.  So that's that decision made.  If the jugs need to be bored then why the hell not go all out - 823cc piston kit here I come.  Because whoever said "why?" to "more horsepower sir?"
Hell yea


Sent from my iPhone using DO THE TON
first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #535 on: Apr 28, 2019, 14:33:51 »
Carbs cleaned, rebuilt with new gaskets etc and reassembled -





Here's the choke linkage -



I found this time that the choke butterflies weren't actuating when I tested the choke assembly.  Turns out it's very easy to skew the alignment of the two choke "stems" going through the carbs, and also the butterflies themselves can bind against the inside of the carb bodies.  When I bolted on the two long brackets that hold the bank together, this threw the alignment out of whack and the choke assembly seized up.  I found that by loosely bolting on the rear bracket first (and continually checking that the choke operated) and then the front one, I could then tighten everything up while also keeping the alignment good and the choke working as advertised.

The float bowls and carb hats (whatever they're called) will get a decent polish later on, but for now this job's a good'un.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline CrabsAndCylinders

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Re: 1982 CB750F... The resto-not
« Reply #536 on: Apr 28, 2019, 18:12:26 »
Nicely done.
Lighter, Quicker, Faster.
ZX-14, 900F x 2, 1100F, R100, CBR600, SR500, GT500, RZ350, KZ1000 x 2, Moto Guzzi Lemans lll, CBX550, RD 350, 750 SOHC police special, RG250, TL1000R, GT750, KTM Super Duke 1290 R, Harris/Z-1, Norton 750 Commando, Green 77 KZ650

Offline Maritime

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Re: 1982 CB750F... The resto-not
« Reply #537 on: Apr 28, 2019, 22:34:09 »
Looks good. Shocks should be there tomorrow. Bus arrived as I finished signing the paperwork.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Jimbonaut

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Re: 1982 CB750F... The resto-not
« Reply #538 on: Apr 29, 2019, 13:51:29 »
Mmmmm, pretties...



Not gonna lie, been eyeing up piggyback shocks for years and figured now was as good as time as any to give these a shot.  They're made by TEC Alloy, and if they work half as well as they look then I'll be very happy.  Damn things even smell good.  Adjustable damping and pre load, adjustable ride height - once they're installed and ridden for a while I'll be back with a ride report.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline Maritime

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Re: 1982 CB750F... The resto-not
« Reply #539 on: Apr 29, 2019, 14:11:21 »
Let me know, those would be great on the GL. I have CB900F shocks on it now, but they are 27 years old LOL. I was tempted to open those and fondle them before I sent them but resisted. ;D
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson