?'s after 6637 install
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Senior User
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From: San Diego
?'s after 6637 install
I just installed my AFE 6637 kit from Air Flow Systems and have a couple questions. First I checked the turbo for play and there was no in/out play that I could feel but it has some side/side play, is this O.K. or do I need a rebuild? Second after install of the filter when I am on boost, around 15psi and up when it shifts and boost goes down I get a whoosh sound. It is worse when going from 2nd-3rd when I am on it hard. Is this normal or is the turbo rubbing the housing? Is it possible to get surge with out a tuner? Just curious to the new sounds that I can hear with the new filter.
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
As they say-that woosh sound is "just Darth Vader talkin' to you son". That is normal. That side to side play could be an issue. Did you notice any marks on the housing where it looks like the blades have made contact?
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
Morning Al. The whoosh you hear is the turbo at rpm is making high boost. When the trans shifts, the rpms goes down and don't need the high boost, so the excess air goes right back out the filter. Great sound.
A little side play in the wheel is ok, NO in and out, so you should be good there. EDIT: Is this backwards Jason?
And yes on the surge with a chip. I get surge real bad when I am on it. Two ways to fix this. Install a WW (wicked wheel) or a ATS housing. Both work good, but the ATS works better according to some people.
Have fun.
A little side play in the wheel is ok, NO in and out, so you should be good there. EDIT: Is this backwards Jason?
And yes on the surge with a chip. I get surge real bad when I am on it. Two ways to fix this. Install a WW (wicked wheel) or a ATS housing. Both work good, but the ATS works better according to some people.
Have fun.
Thread Starter
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Senior User
Joined: Feb 2008
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From: San Diego
Morning Al. The whoosh you hear is the turbo at rpm is making high boost. When the trans shifts, the rpms goes down and don't need the high boost, so the excess air goes right back out the filter. Great sound.
A little side play in the wheel is ok, NO in and out, so you should be good there. EDIT: Is this backwards Jason?
And yes on the surge with a chip. I get surge real bad when I am on it. Two ways to fix this. Install a WW (wicked wheel) or a ATS housing. Both work good, but the ATS works better according to some people.
Have fun.
A little side play in the wheel is ok, NO in and out, so you should be good there. EDIT: Is this backwards Jason?
And yes on the surge with a chip. I get surge real bad when I am on it. Two ways to fix this. Install a WW (wicked wheel) or a ATS housing. Both work good, but the ATS works better according to some people.
Have fun.
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Senior User
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From: San Diego
The first time I was on it and heard the "Vader" sound it about scared the ***** out of me
wasn't expecting it.
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Hook it, I'll pull it.
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From: Grand Lake, La.
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Lead Driver
Joined: Jun 2007
Posts: 7,760
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From: Hampton, Maryland.
I didn't notice the housing, how much is too much side/side play? I do have 180K on it and probably wouldn't hurt to rebuild when I get the DP. I will probably get the WW before I get the tuner anyway, might as well do the rebuild then also.
The first time I was on it and heard the "Vader" sound it about scared the ***** out of me wasn't expecting it.
The first time I was on it and heard the "Vader" sound it about scared the ***** out of me
wasn't expecting it.this is what OEM says for Testing and Inspection, with turbo standing on one end, move blade assembly to one side and spin, it should not touch in the housings, move blade in other direction and spin wheel, it should not touch in the housing, if the wheel touches the housing bearing needs to be replaced, otherwise it is still good. end play, set up a dial indicator at the end of the shaft, move shaft back and forth, measure end play
end play should be: 0.02-0.10MM or 0.00079-0.00394 in.
if this spec does not meet, turbo needs to be reconditioned or replaced.
Broken Wire
end play should be: 0.02-0.10MM or 0.00079-0.00394 in.
if this spec does not meet, turbo needs to be reconditioned or replaced.
Broken Wire
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
I was thinking the oil on the bearing (when the engine is running) tightened things up a bit, so with the engine off and no oil pressure there would be a minute amount of play. Am I wrong on this Jason?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
I little side to side is ok. There has to be room for the oil film and with the engine off you you pushing on it, that oil film is overcome for the moment. Engine running, the oil film returns and centers everything back up.
In and out movement is a problem.
In and out movement is a problem.
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From: San Diego
Thanks for all the help guys, gota love the knowledge on this site
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