Maximum safe C.R. LT1 on pump gas
#1
Maximum safe C.R. LT1 on pump gas
California 91 octane to be exact.
I know LT1s can better handle compression due to the reverse flow cooling... But is the factory C.R. pretty much all you can run without risking detonation? If not, how much compression can you run and still have a little bit of wiggle room -to be safe?
I know LT1s can better handle compression due to the reverse flow cooling... But is the factory C.R. pretty much all you can run without risking detonation? If not, how much compression can you run and still have a little bit of wiggle room -to be safe?
#2
Re: Maximum safe C.R. LT1 on pump gas
Originally Posted by kick Z tail out
California 91 octane to be exact.
I know LT1s can better handle compression due to the reverse flow cooling... But is the factory C.R. pretty much all you can run without risking detonation? If not, how much compression can you run and still have a little bit of wiggle room -to be safe?
I know LT1s can better handle compression due to the reverse flow cooling... But is the factory C.R. pretty much all you can run without risking detonation? If not, how much compression can you run and still have a little bit of wiggle room -to be safe?
Just as long as you DCR is below 9.0:1 you should be fine.
#5
Re: Maximum safe C.R. LT1 on pump gas
Originally Posted by SStrokerAce
It has to do with a lot of things.... where is Valle Vista in Ca? What are you planning to build?
Bret
Bret
Valle Vista is in the SoCal desert about 20 miles west of Palm Springs.
#7
Re: Maximum safe C.R. LT1 on pump gas
A big radiator(3 core) and Evans coolant ya could get away with 8.8-9.0-1 DCR.
I talked to a guy in Vegas that is running 9.6-1 on the street in an Impy on pump gas,but I ain't that brave.
I talked to a guy in Vegas that is running 9.6-1 on the street in an Impy on pump gas,but I ain't that brave.
#8
Re: Maximum safe C.R. LT1 on pump gas
Summer can reach highs of 105-108 degrees on the hottest days... In winter, usually 60-70 degrees.
But yeah, it's pretty hot here in the summer months.
But yeah, it's pretty hot here in the summer months.
#10
Re: Maximum safe C.R. LT1 on pump gas
Originally Posted by Sweetred95ta
Sorry for asking or jacking the thread, but what does DCR stand for?
Of course that's all a guess so we'll see what it really means when they reply
#12
Re: Maximum safe C.R. LT1 on pump gas
Originally Posted by SStrokerAce
Yes that's what it stands for. Do a search on that to learn some more.
I would actually cut the DCR back to at the most 8.5:1 where you are, and probably put it around 8.3:1.
Bret
I would actually cut the DCR back to at the most 8.5:1 where you are, and probably put it around 8.3:1.
Bret
So what DCR do you think (guessing) my stock motor is getting in this climate? You're saying I wouldn't be able to bump it up a little?
#15
Re: Maximum safe C.R. LT1 on pump gas
How much cooling do you need? Especially in a hot climate. I was shooting for 8.7 dcr with rp purple ice and cowl hood and around 20% coolant (the rest distilled water) and a 160* thermostat.
Is the above considered to be enough to run a dcr that high?
Is the above considered to be enough to run a dcr that high?