DR cylinder + Polini head

[KTy]

Is it really plug'n play or do I have to add a gasket or something ? (because the squish band of the Polini head is ~0mm)

Thank you

[Beni]

Qisch band 0mm!

Compression!

Insert min a 1mm gasket and test it!

Optional an feed or head!

[KTy]

I want to know if there are simple plug'n play experience...

I read about it here on the GSF, but I just want to be sure it's working fine without any modifications...

[happypete]

Haven't done this until now, but as far as I know, the squishband is a delicate subject concerning the DR-Polinihead-Combo. As already written, use a ~0.8mm gasket first of all. If you are not satisfied with the power/compression, rebuild without the gasket.

In any case: Always measure the squishband, whatever you do!

Greetz, Pete

[KTy]

For a gentle daily rider (DR + Popo head + SI2020 + original Sito Exhaust), what is the best squish any risk ? ~1-1.5mm ?

[dr177]

1,5mm no less.

Marc74 had tested it with a smaller squish. Teh engine became to hot.

[KTy]

Alright for a squish of 1.5mm.

What is the original DR squish size ?

By the way, the polini head is really better than the DR one ??

[happypete]

The Polini head provides more compression, and thus more power throughout the revs.

The original squish varies extremly. I have heard of squisches > 2.5mm, even over 3mm!!!

Hope it helps

Pete

[dr177]

Yepp, original squishes at the DR up to 3,5mm.

It seems that the Polinihead has a better layout.

[KTy]

Okay, thank you