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would a fully rebuild 4.2L be worth the cost to build is it was to be kept NA. and maybe some nitrous? what kinda of power would 11:1 compression see? is 300 rwhp possible?
NA high compression build worth it?
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165 Posts
......................and maybe some nitrous?
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15,799 Posts
say good bye to pump gas with 11:1
bingo
+1 You could use methanol as a fuel, though it would be hard on the fuel system.
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5,102 Posts
I run pump gas with 11.6:1 compression....
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1,522 Posts
do it right you could hit 300
take out a nice loan
take out a nice loan
... but your kinda missing the point... a little, with higher compression you need higher octane fuel... i believe the highest compression you will want to run is 10.5:1 and that has to be on 93 octane fuel or else youll start having problems and knocking and **** 11:1 you will need to find a place that sell 104 or something 93 wont be enough, unless you build it just right
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5,102 Posts
I see what you're trying to say, but I'm saying that you may not know al the facts.
Fact: I just got out of car. It has a full tank of 93 octane fuel from Sunoco. It is running great. It has 11.6:1 compression.
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acmillr
omz is right dude.
unfortunetly 10:5:1 is about the highest to go safely on the pump
for us
its okay acm :hugacmillr
omz is right dude.
unfortunetly 10:5:1 is about the highest to go safely on the pump
for us
bah just playin... engines are different, your 4.6 and my 3.8 react differently to high compression... you wouldn't know that mine can't handle it, i wouldn't know that yours can...
its all good,
but suriusly
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5,102 Posts
Send a pair of old head cores and I can show you how to manage the flame front. You probably can't manage 11:1 on a stock combustion chamber, but there are ways to engineer the problem out.acmillr
omz is right dude.
unfortunetly 10:5:1 is about the highest to go safely on the pump
for us
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5,102 Posts
The 4.6's can't handle without a worked chamber........
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5,102 Posts
I'm all about results.........oh see now your cheating
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15,799 Posts
you can talk with super six motor sports
they've done a n/a nitours car
and they're doing another
both are 10:5:1
trust me thats the safest on pump for us
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