downpipe pix
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#10
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2.5" is a bit big for your combo and 3" is a bit small. Work looks good though. 2.5" will easily handle 2000-2400hp, while 3" will support 400-450hp. I would have gone smaller on the crossover and bigger on the downpipe. I would have liked to see 2" on the crossover and 3.5" on the downpipe for your setup.
Last edited by Phil99vette; 02-14-2011 at 07:54 AM.
#11
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2.5" is a bit big for your combo and 3" is a bit small. Work looks good though. 2.5" will easily handle 2000-2400hp, while 3" will support 400-450hp. I would have gone smaller on the crossover and bigger on the downpipe. I would have liked to see 2" on the crossover and 3.5" on the downpipe for your setup.
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Working and Working efficiently are 2 different things. We run 2.5" crossover on setups that make 4x that horsepower. The pre-turbo tubing should be sized for velocity and the post turbo should be sized for flow. Will it work, yes.... Can you make small changes and make boost faster, absolutely.
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Read this if you got a chance.
https://ls1tech.com/forums/forced-in...es-help-6.html
https://ls1tech.com/forums/forced-in...es-help-6.html
#15
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Man I spent alot of time making the hot side. Everyone I talked to said to use 2.5 for the crossover. I dont really have the time or money to remake it and now I'm worried I won't see boost soon enough as it is a street vehicle. If I can should I remake it? Or let it be and see how it works.
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you're not building a race car with a giant turbo, i think the crossover is fine. i cant find any of the info on your build (i did now, but i had to dig... YOU STILL DONT HAVE A BUILD THREAD!)
so a t70/ls1 - it'll spool FINE. its not like you're running a 98mm thumper or something. i'd personally go with at least a 3.5 inch DP though. the downpipe should be (appx, from what i've read) 1.25x larger than the outlet of the turbo.
so a t70/ls1 - it'll spool FINE. its not like you're running a 98mm thumper or something. i'd personally go with at least a 3.5 inch DP though. the downpipe should be (appx, from what i've read) 1.25x larger than the outlet of the turbo.
#20
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you're not building a race car with a giant turbo, i think the crossover is fine. i cant find any of the info on your build (i did now, but i had to dig... YOU STILL DONT HAVE A BUILD THREAD!)
so a t70/ls1 - it'll spool FINE. its not like you're running a 98mm thumper or something. i'd personally go with at least a 3.5 inch DP though. the downpipe should be (appx, from what i've read) 1.25x larger than the outlet of the turbo.
so a t70/ls1 - it'll spool FINE. its not like you're running a 98mm thumper or something. i'd personally go with at least a 3.5 inch DP though. the downpipe should be (appx, from what i've read) 1.25x larger than the outlet of the turbo.