puch 80cc metrakit large port kit

puch 80cc metrakit large port cylinder kit

$250.00

:HERE NOW!!

puch 80cc metrakit, including cylinder, head, gaskets, piston, piston rings, wrist pin and clips

these kits, unlike others, require engine case modification to even fit into the case. don't fool yourself and think anything is going to fit on easy. not for rookies, mostly for gurus.

you'll have to use a pipe like the homoet 8p designed for angled exhaust ports (or hack and reweld), a different intake to get the carb away from the stifling frame, a huge carb, etc. etc.

this piston uses rings of the dykes ring (L ring) variety. iron bore sleeve, with oversize pistons available should you encounter any hmm, in this case, non fatal seizures. yep.

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Exhaust port problem?	July 31, 2010
taco eater: Robert Smiley from Fountain Valley, CA United States

This kit is actually designed and sold by Metrakit for the Puch "Condor" which we don't have over here on this side of the "Pond". I used it in another Derbi piston-ported project and it seized up just below the exhaust port . I was using known-good carburation, exhaust, timing, extra break-in oil, etc. Upon disassembly-inspection the problem was very likely due to not having a "bridge' across the huge and (TOO?)WIDE exhaust port. I believe that the rings DID NOT have enough "support" and would "grow" into the port and cause the problem but I can't swear to it. I've been doing this stuff for 15 years now but, hey, I'm still learning! Anyone else have this problem?

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2 people like this review

Great kit	June 21, 2009
taco eater: Mars from Boston

Current Setup w/ MK80BP:
19 PHBG
90 main
Estoril pipe
17x45 gearing

Still breaking the kit in, but so far there is no hill I can't destroy.

Exhaust mount surface is a bit uneven, but the big crush gasket makes up for it. Making room for the cylinder in the case is a lot of work like any other 70+ kit, and to do the port matching, some material will need to be added, or you can simply not match 100% like I did.

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