Forced Induction Superchargers | Turbochargers | Intercoolers

Procharger plenum cracked again...

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Old Aug 22, 2008 | 10:21 AM
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Default Procharger plenum cracked again...

Well my plenum has cracked for like the 4th time. So I think instead of welding it again I just need to get a new one. Does anyone have a metal plenum for the F-body kit laying around that they don't need anymore. I would really like to get a polished plenum too if someone has one. Please pm me so we can work out the details. Thank you.
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Old Aug 22, 2008 | 11:45 AM
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Just weld it up.....the box is not the problem.....you need a better bypass


Check out my thread when my box blew up
https://ls1tech.com/forums/forced-induction/949284-plenum-box-exploded-procharger-race-bypass-info-needed.html
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Old Aug 22, 2008 | 06:31 PM
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Yeah but i have welded it 3 times already and it keeps breaking. I will have to look into that.
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Old Aug 22, 2008 | 07:13 PM
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get rid of it and do a Y setup.
flows better, no broken boxes.
procharger will sell the Y for a very reasonable price and then you just have to come up with a little custom tubing on your own.
we did this on my buddy's car is it's way better than the crappy box ati uses.
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Old Aug 22, 2008 | 07:19 PM
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Originally Posted by Blackbird
get rid of it and do a Y setup.
flows better, no broken boxes.
procharger will sell the Y for a very reasonable price and then you just have to come up with a little custom tubing on your own.
we did this on my buddy's car is it's way better than the crappy box ati uses.
Anyone got a picture of it. It sounds like it is better.
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Old Aug 22, 2008 | 07:58 PM
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Originally Posted by Packy
Anyone got a picture of it. It sounds like it is better.
+1
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Old Aug 22, 2008 | 09:23 PM
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I prefer running a TIAL blow (with the stock ATI bypass) .Not a fan of the ATI race valve and how loud it is cruising. The TIAL with the 11lb springs needs 16" of vacuum to open.Perfect to take the pressure off the pipes.
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Old Aug 22, 2008 | 09:47 PM
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Originally Posted by Packy
Yeah but i have welded it 3 times already and it keeps breaking. I will have to look into that.
But after it broke the first time did you change the bypass?

The only reason the aluminum plenum will crack is if the bypass cannot vent the air out quick enough.....the air has to go somewhere if the tb is closed....since you have cracked the plenum multiple times you need a better flowing bypass to release the pressure better


Here is a pic of the y set-up though
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Old Aug 22, 2008 | 10:05 PM
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Yeah, I had changed to the ATI Race valve after the second time. Oh well maybe I will look at it again and throw a Tial on there as well.

Originally Posted by AFASTYZFR1
But after it broke the first time did you change the bypass?

The only reason the aluminum plenum will crack is if the bypass cannot vent the air out quick enough.....the air has to go somewhere if the tb is closed....since you have cracked the plenum multiple times you need a better flowing bypass to release the pressure better


Here is a pic of the y set-up though
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Old Aug 22, 2008 | 10:07 PM
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Originally Posted by Packy
Yeah, I had changed to the ATI Race valve after the second time. Oh well maybe I will look at it again and throw a Tial on there as well.
How much boost are you running?
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Old Aug 22, 2008 | 10:12 PM
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Originally Posted by AFASTYZFR1
How much boost are you running?
8 psi...
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Old Aug 22, 2008 | 10:18 PM
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with an ati race bypass (red one) you should not be cracking the aluminum plenum....I am running 16psi through my aluminum plenum w/ ati race bypass


maybe bypass needs adjusting.......or isn't working properly
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Old Aug 23, 2008 | 02:48 AM
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man just go with a FMIC and be done with it
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Old Aug 23, 2008 | 01:18 PM
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Originally Posted by Rickys S/C Z28
man just go with a FMIC and be done with it

EPP has a kit !!
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Old Aug 23, 2008 | 01:33 PM
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yep thats the one i have and i love it!!
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Old Aug 23, 2008 | 01:35 PM
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Wow, thats alot of hose clamps righ there!

Originally Posted by AFASTYZFR1
But after it broke the first time did you change the bypass?

The only reason the aluminum plenum will crack is if the bypass cannot vent the air out quick enough.....the air has to go somewhere if the tb is closed....since you have cracked the plenum multiple times you need a better flowing bypass to release the pressure better


Here is a pic of the y set-up though
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Old Sep 10, 2009 | 10:30 PM
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Mine also cracked 2 times. I didn't think I needed to run a bypass at only 8psi. It's wierd that the rubber hoses arn't blowing up. I think a y setup would work nice. Probably faster spool too.
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Old Sep 10, 2009 | 11:11 PM
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I had the bottom part of my plenum replaced with a 1/4" thick pierce of aluminum and haven't had any problems since. TiAL BOV in the pipe between the TB and Plenum.
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