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quick question about b&ps for 92mm heads

1631 Views 8 Replies 4 Participants Last post by  PitCrew
hi, im about to order some barrels and pistons for my engine build and have heads that are machined for 1835 but have read alot about them being thin walled and i plan on this engine lasting me a while so want 1776 to be on the safe side for the sake of 59cc...

basically all im asking, is the external diameter for the 1776 b&ps the same as the 1835? so will it fit my heads okay?

thankyou!!! :)
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Thanks :) I haven't been able to find all the different measurements like that :) 1776 it is then
ive had 1835 in my fully kitted camper for 3 years with no over heating issues.... thrashed it up snowdon in august no issues.

its also been down santapod (20.05s).

used it for lots of towing with a full van still no issues.
Lots of folks are running around on 92mm p&b's without any probs.

There's lots of crap talked about "thin wall" p&b's but decent make sets are fine if the engine is setup and maintained correctly.
Just avoid the cheap shit products even in stock sizes.

It's not worth changing pistons / barrels for the extra cc's but it's worth considering if you're buying a new set anyway.
Right, that sounds promising, maybe it is worth th extra cc's then same price and same build :/

Thanks for the info :)
Just make sure that you buy a decent make and everything on your engine is setup correctly, including your cooling tinware and oil system otherwise you'll shorten the life on even stock p&b's.

Too many folks just bolt on cheap shit parts, or just bolt on new p&b's without sorting out the rest of the motor, or don't maintain the motor properly... then wonder why they have probs.:rolleyes:

Good luck with the build.:)
Are Mahle pistons essential? And the only bit I need to understand about the tinware it the thermostat and linkage because the engine I have came with no tinware and my single port tinware from a 1200 obviously won't work, but I think I'll understand the linkage once I get it and have a proper look

Maybe I should put a wanted add up on here for full tinware set as its expencive new
Are Mahle pistons essential?
Not essential, but usually good.

Maybe I should put a wanted add up on here for full tinware set as its expencive new
Could be a good plan.

A decent manual will help a lot too.
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