Re: Looking for derbi pp engine

Jackerz ! /
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> Daniel '' Wrote:

> -------------------------------------------------------

> Didn’t say it’s a weak engine, but if you go tripling or quadrupling the

> h.p. of any machine there will be issues that come up. And considering

> how piston port parts are pretty hard to find these days any failure is

> catastrophic.

>

> As for mounting a puch cylinder on a derbi, it requires opening the 2mm

> or so. On my eurokit with a head gasket before I went to a o ring, it

> did not like to seal and would occasionally blow out by the stud hole. I

> bet if I used a derbi metra head it would have been better. Oh and one

> more thing, starting a 74cc derbi with no decomp sucks! I got my starter

> clutches so dialed and it was still a bear, you walk next to it and then

> when it starts to engage you have to step on the pedal and put all of

> your weight down.

>

> TLDR; get a flat reed and bolt on a metrakit. Easier, more fun and

> cheaper.

^This^

I have piston port engines on the shelf with puch Gilas, mk80, eurokit that are completely built that I got tired of starting that I replaced with puch polini engines. The pedal disengagement is the weak link on these and I’d rather not stress out the internals more than need be. That being said I do have one engine I might get rid of off a running variant I had. Rebuilt and

De-nubbed with a Athena 70 big reed kit. $420 shipped

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