Author Topic: CB 750 F2  (Read 3825 times)

Offline Moxey

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Re: CB 750 F2
« Reply #30 on: August 17, 2018, 08:22:02 PM »
for goodness sake, slow down!!! youre showing me up...

Oops, to be fair there are at least 2 of us working on the bike!

Started up for the first time last Saturday, filters still off for the time being, started great no leaks ;D

Unfortunately only on 3 at tick over (clogged idler jet I think)

Here's a quick video of it earlier
https://youtu.be/8ov2y4W4QOU

Will take it out tomorrow to test further (also fitted my recently re-acquired flat bars).
78 CB 750 F2
77 CG 125
97 VFR 750

Offline haynes66

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Re: CB 750 F2
« Reply #31 on: August 17, 2018, 09:06:47 PM »
although to be fair to me, i have been riding my new firestorm like an eejit about the place so havent been in the shed for ages. youre doing a grand job there though, keep the pics coming.
honda firestorm
silverwing 600 scooter
honda britain project
phil read rep project
YGS1 80cc yamaha
LE Velocette

Offline Moxey

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Re: CB 750 F2
« Reply #32 on: August 25, 2018, 09:48:21 AM »
Took it for the maiden voyage to the petrol station last week, all running well barring the idle (a clean and balancing should sort that, I also think I'd prefer to run the original airbox so going to hunt one down).

Took it for a bit longer run last night just to bed the new rings in and I noticed on return a bit of smoke emanating from the crankcase breather tube :o now I don't think this is normal so I'm going to check the oil for contamination, read a few sources online that vary from this is normal to your rings are buggered, its comparable to this example https://www.youtube.com/watch?v=e8ki1LJEJW0.

On a lesser note I found the grease nipple I fitted to the swingarm is inaccessible with my grease gun ::) lucky it was packed quite thoroughly before fitting, 90 degree nipple on order.
 


78 CB 750 F2
77 CG 125
97 VFR 750

Offline Yoshi823

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Re: CB 750 F2
« Reply #33 on: November 12, 2018, 10:41:31 PM »
Good effort with this 750F2. Brings back lots of memories of my one many years ago



At the Isle of Man TT in 1980
Bikes...they're in the blood.
Yamaha R1 2001
Yamaha FZR1000R EXUP 1990
KTM 450 EXC RFS 2004
Honda XR400R 1997
Honda CB125T2 1980
Yamaha FJ1200 3XW 1991

Offline Moxey

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Re: CB 750 F2
« Reply #34 on: January 26, 2019, 09:28:43 AM »
Ah Yoshi 823 I didn't realise you'd posted here, it was your thread on BCF that set me after an F2 in the first place! Yours was a stunner shame, how it ended up.

Acquired a spare set of barrels for the 750 that were a little damaged, came with the 65mm pistons to take it up to 836 if I so wish.

The damage.


Chucked them in the works oven at 85 degrees for about 20 minutes then proceeded to tap them out nice and easy.


3 of the fins on one side were also damaged so welded them back on (bottom left).




Little bit of filing and they should look as new, provided my contact in Middlesbrough gets in touch I should be able to get some NOS 836 rings so should only cost the new sleeves + machining of and soda blasting and I have a cheap 836 kit (fingers crossed!)
78 CB 750 F2
77 CG 125
97 VFR 750

 

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