Pump gas compression?

[Jerry Millington]

What is the max compression you can run (2.4)
on pump gas?
jerry

[Jay Smith]

140-145 PSI cranking compression at sea level with timing set @ 25 degrees total or maximum timing......

[Jerry Millington]

Jay i tried to send you a PM but your box
is full.
I would like to send my heads to you ,Should i call
your shop to set it up?
What kind of turn around are we looking at?
thanks jerry

[Techno]

What are high compression cranking values? Say the 100+ octane compressions.

[Jay Smith]

Sure Jerry call anytime 1 281 576 5088 cst...

Techno:
I do know that 100 octane racing motor gasoline will support a 2.5 Drag , 260, or 245 HP Engines with stock port timing the correct thickness head gaskets , at sea level with total timing @ 25 degrees with a stock Mercury umbrelled type shallow bowled combustion chamber configuration cylinder head with 26 CC's and yeild 168-175 PSI cranking on a healthy engine ( 4 % or so leak down ) with NO PROBLEM WHAT SO EVER......

Hope that answered your question...

[Jay Smith]

Turn over time is 1 day in house + freight time back to you VIA DHL or USPS....

Thanks, 1 281 576 5088 cst or hitman6563@yahoo.com
Jay

[TheRickster]

Jay, did your CNC guy ever get a program up for cutting the O- Ring fishin motor heads(2000 and up)??

Rick

[Jay Smith]

I'm ashamed to say no Rick, and you have reminded me to get him back on that little project.......

Thanks,

[TheRickster]

No problem, I ran a check on mine today and it was 120ish on all cylinders and was thinkin about investing in maybe bumping the ole girl up a bit...

Rick

[Techno]

Thanks Jay that answered it perfectly.
With the recent low octane posts was just wondering what the high numbers would be.