Heads

[Matt_E]

So maybe a ported motor with only 160 to 180psi could still need 94 octane and up?

Yes. :frown:

 

[WaveDemon]

be carfull with using a small dome with a ported cylinder. I wanted to bump my ported cylinder compression up and melted the pistons/rings and damaged the domes badly. I was only getting 180 psi (using 93 octane) with the upgraded domes when the melt down happened.

http://www.pwctoday.com/attachment.php?attachmentid=16524&d=1129680295

http://www.pwctoday.com/attachment.php?attachmentid=16525&d=1129680155

 

[Matt_E]

Yup...bigger bore, plus porting, plus 180PSI cranking = Bad juju.

 

[MADMAT]

AHHGGGGH!!!:aargh4: :aargh4:

I'm just keeping my domes and gettin new orings! I am not risking anything and the ski already flys!

I'll mess with this crapola next winter.

C'MOn Summer!!!!:aargh4: :aargh4:

 

[WaveDemon]

atta boy, don't get greedy.

 

[MADMAT]

I want more POWER:aargh4: :aargh4: