Hero Massive head choices?

todd amundson /
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Hello,

I'm assembling a PUCH Hero kit on some Korado 3 bearing cases that are kick start. i will not be using the kickstart mechanism, only the cover. The engine will be pull start only once completed with a KTM clutch.

My question is, what type of head would best fit this kit? It's really big and looks like a Gila or Magnum head would "Fit" best. The Magnum would need to be machined to 43.5mm which I don't think would be possible from the stock casting and the Gila would be too big of a combustion area.

Hmmm.

I just don't want some puny hobbit head sitting on a huge cylinder.

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Re: Hero Massive head choices?

Re: Hero Massive head choices?

todd amundson /

> Chris Straub Wrote:

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

> https://www.treatland.tv/custom-cut-43-5mm-high-compression-head-for-PUCH-p/custom-head-003.htm

Oh i have seen this already. I guess it's already set up for it but I'm looking for a square head. Anything else that will make this job any harder on myself?

Re: Hero Massive head choices?

Probably Fred /

A magnum head is my go to head!

Take a magnum head sand it to flat removing all raised areas, put a bevel/squish band on it.

I remove all but maybe 10% of the raised sufaces with my Makita belt sander then I finish by hand with 200 grit 500 grit and like 1,000-1,200grit then I dremel a squish band in it

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Re: Hero Massive head choices?

Factory korado head if you can find one.

Re: Hero Massive head choices?

magnum head looks pretty good, tomos a55 as well. im using a mk80 head on mine, jsut because that was what was around and it works fine.

Re: Hero Massive head choices?

on E50 cases and I dont know why this is, Ive just noticed it on two motors, if you dont use a Korado head it will smack the piston on the head, you can space the base out a bit, but that can mess up the port timing, on ZA50's or Karadao cases, I use a Magnum head like Ken suggested

Re: Hero Massive head choices?

> todd amundson Wrote:

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

> The Magnum head

> would need to be machined to 43.5mm which I don't think would be

> possible from the stock casting

I think there is enough metal. Chuck it into a lathe and face down the boss at the mating surface and use a head gasket. Take the angle off the piston and cut a squish band out to the bore diameter. Magnum heads have less compression than the high torque heads with the sealing groove so it should work out

Re: Hero Massive head choices?

I mean align the compound with the dome plus a little further for the squish angle

Re: Hero Massive head choices?

todd amundson /

> niklaus g Wrote:

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

> I mean align the compound with the dome plus a little further for the

> squish angle

What's this compound you speak of?

Re: Hero Massive head choices?

Use the hero head.

Re: Hero Massive head choices?

the compound on the lathe, so you can cut the squish at the correct angle

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