Pluged silencer vid?
Senior Member
Joined: 05-30-06
Posts: 2,975
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From: Upstate NY
I dont know where that video is but here is my how to guide.
https://www.cobaltss.net/forums/show...silencer+holes
https://www.cobaltss.net/forums/show...silencer+holes
Senior Member
Joined: 01-20-08
Posts: 1,401
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From: Somewhere in WI
Last edited by 07BaltSS/SC; Mar 19, 2009 at 10:10 PM. Reason: Automerged Doublepost
this ones crazy
http://www.youtube.com/watch?v=QOSDUPE0Wx0
http://www.youtube.com/watch?v=QOSDUPE0Wx0
Makes your blower slightly louder.
The back-flow slots were on the earlier Eaton designs as it reduced the back-flow event, which reduced noise (slightly). Plugging the slots does improve flow, but ever so slightly. The impact from an efficiency standpoint is negligible. I would be more concerned with the method of plugging the slots as welding will of course distort the housing and using aluminum filler runs the risk of coming loose, thus resulting in a destroyed unit altogether. In my opinion its not worth the minimal gains vs. the risks in plugging the slots.
Senior Member
Joined: 01-20-08
Posts: 1,401
Likes: 0
From: Somewhere in WI
Makes your blower slightly louder.
The back-flow slots were on the earlier Eaton designs as it reduced the back-flow event, which reduced noise (slightly). Plugging the slots does improve flow, but ever so slightly. The impact from an efficiency standpoint is negligible. I would be more concerned with the method of plugging the slots as welding will of course distort the housing and using aluminum filler runs the risk of coming loose, thus resulting in a destroyed unit altogether. In my opinion its not worth the minimal gains vs. the risks in plugging the slots.
The back-flow slots were on the earlier Eaton designs as it reduced the back-flow event, which reduced noise (slightly). Plugging the slots does improve flow, but ever so slightly. The impact from an efficiency standpoint is negligible. I would be more concerned with the method of plugging the slots as welding will of course distort the housing and using aluminum filler runs the risk of coming loose, thus resulting in a destroyed unit altogether. In my opinion its not worth the minimal gains vs. the risks in plugging the slots.
Senior Member
Joined: 01-20-08
Posts: 1,401
Likes: 0
From: Somewhere in WI
Yeah ive got an intake and 2.9 pulley and the whine is great. Im sure my iats are through the roof lol. Is it tons safer to just run a 3.0 and would I notice much of a difference in power?
Its not tons safer but its slightly safer. You would notice a slight lose in power if you were to use a gm stage2 pulley. Its pretty hefty compared to most aftermarket companies pullies.
I would be more worried about your injectors duty cycle as that is most likely well over 115%.
I would be more worried about your injectors duty cycle as that is most likely well over 115%.
Senior Member
Joined: 01-20-08
Posts: 1,401
Likes: 0
From: Somewhere in WI
Its not tons safer but its slightly safer. You would notice a slight lose in power if you were to use a gm stage2 pulley. Its pretty hefty compared to most aftermarket companies pullies.
I would be more worried about your injectors duty cycle as that is most likely well over 115%.
I would be more worried about your injectors duty cycle as that is most likely well over 115%.
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