Well back in May I put a GT42r on my Talon. Did a boost leak test and didnt find any leaks off the turbo. The car was running fine and pulling great, no signs of any leak at all. My log's still show 30+PSI and 65-67lbs/min and everything looks good but the turbo is very laggy compaired to what it use to be.
So last night I did another boost leak test and right off the compressor housing, the v-band clamp was leaking a lot of air. Major amounts to make it not even show any pressure on my boost gauge when trying to test for leaks.
My question is, does anyone else have problems with v-band clamps used for intercooler piping? Specifically used with GT40+ sized turbos using the same compressor housing.
I've also noticed that on Shep's 42r, he cut the v-band flange off the compressor housing.
Here is when he was mounting the turbo up...
http://www.dsmtimes.org/shepherd/Picture%20008.jpg
And here is the turbo piped and finished, he cut it off for some reason?
http://www.dsmtimes.org/shepherd/Picture%20091.jpg
I believe he probably did it due to the fact that he is running 55+PSI but I cant find anyone actually using a V-band on the intercooler system.
Here is mine, I just dont know if I want to take the compressor housing off and cut it up if I can find away to make the v-band work.
I ended up putting hi-temp RTV between the 2 flanges and clamped it back up, then tested the system again. I got it to hold 15psi just fine until the tester blows off. Its hard to find 5.75" T-bolt clamps so the worm clamp has a hard time holding the tester on the turbo. The RTV seems to be working as the turbo spools a lot better now, just wanted to see what other people are doing to get a good seal?
Thanks
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