10.5:1 compression
- Thread starter cleetus
- Start date
The question SHOULD have read: What's the max compression to possibly run a blower/turbo on pump gas?
My bad.
My bad.
Depends. 10.5-1 is alot of a pumpgas n/a motor much less one with boost.
There is no magic number. The entire engine need to be accounted for.
Too much to list really beacuse it is everything!
The real anwser is buy pistons, drop the compression and do it right.
Not what you WANT to hear but the right answer.
Plus lower compression will give you greater tuning area. More room for mistakes....
There is no magic number. The entire engine need to be accounted for.
Too much to list really beacuse it is everything!
The real anwser is buy pistons, drop the compression and do it right.
Not what you WANT to hear but the right answer.
Plus lower compression will give you greater tuning area. More room for mistakes....
I aked the same ??? of Steve Morris and he said yes with a cooler and race gas and a spot on tune and make crazy power just a lot smaller tuning window.
turbos and blowers works better on 8.0 to 8.5to1 compression. 10.5 be too much and u will have gasket failure and interal damage. and be blowing rings out. i learn my lesson with a B&M Single 4BBL Blower and 10to1 pump gas before. trust me on this...they aint the best of friends lol
Chevy Guy said:
Not really... For the typical guy yes, 8.0-9.0 will allow a larger tuning window.
Especially if you a running pump gas. H/G failure comes from detonation not
compression. 10.5 - 1 in a true racecar with the correct fuel and set-up is done
VERY often.
Pump gas is the biggest issue.
isn't the rule of thumb something like 3psi of boost is equal to 1point in compression? So if you had a 8.5:1 motor and added 10psi to it you'd be around 11.5 to 12:1. That could give an idea of what fuel is needed.
I think with 10:1 you could just swap to e85 with an air/air cooler and call it a day
I think with 10:1 you could just swap to e85 with an air/air cooler and call it a day
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