Why Can't I Run a 4bolt Downpipe With a Cast Manifold?
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Why Can't I Run a 4bolt Downpipe With a Cast Manifold?
People have been telling me that I can't run a 4bolt exhuast housing wth a cast manifold?
I coudlnt understand the reason why this is not possible.
I do want to keep AC though.
Any light on this subject is greatly appriciated.
Thanks!
I coudlnt understand the reason why this is not possible.
I do want to keep AC though.
Any light on this subject is greatly appriciated.
Thanks!
#2
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Re: Why Can't I Run a 4bolt Downpipe With a Cast Manifold? (integlspwr2k)
The cast manis are desgned to be used w/ a 5 bolt turbo. On a DOHC you can't turn the turbo w/ the compressor on the passenger side using a 4 bolt turbo, it would never bolt to the head due to the turbo hitting the block. 5 bolt housing is different.
(On a SOHC you can use a 4 bolt turbo and cast mani)
(On a SOHC you can use a 4 bolt turbo and cast mani)
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Re: Why Can't I Run a 4bolt Downpipe With a Cast Manifold? (Autoworks)
i have a ugr cast manifold + silver surfer turbo
if i remove my accessories, i would more than fit a 4" DP!
if i remove my accessories, i would more than fit a 4" DP!
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Re: Why Can't I Run a 4bolt Downpipe With a Cast Manifold? (Autoworks)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Autoworks »</TD></TR><TR><TD CLASS="quote">The cast manis are desgned to be used w/ a 5 bolt turbo. On a DOHC you can't turn the turbo w/ the compressor on the passenger side using a 4 bolt turbo, it would never bolt to the head due to the turbo hitting the block. 5 bolt housing is different.
(On a SOHC you can use a 4 bolt turbo and cast mani)</TD></TR></TABLE>So the 5-bolt DP forces the exhaust exit away from the block? That's what I'm getting from your explaination. The 4-bolt design would put it too close to the block? Got pics?
I'm wondering because I'm trying to decide what route I want to go (cast or tubular manifold) Thanks.
(On a SOHC you can use a 4 bolt turbo and cast mani)</TD></TR></TABLE>So the 5-bolt DP forces the exhaust exit away from the block? That's what I'm getting from your explaination. The 4-bolt design would put it too close to the block? Got pics?
I'm wondering because I'm trying to decide what route I want to go (cast or tubular manifold) Thanks.
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Re: Why Can't I Run a 4bolt Downpipe With a Cast Manifold? (blaze the chemi)
4 bolt and 5 bolt exhaust housing turbos are differently shaped.
most cast manifolds are designed to be used with 5 bolt exhaust housings.
i have a custom built turbo with a cast manifold.
i still have Ac and PS.
i made a spacer to bring the turbo closer to the front of the car so everything clears.
most cast manifolds are designed to be used with 5 bolt exhaust housings.
i have a custom built turbo with a cast manifold.
i still have Ac and PS.
i made a spacer to bring the turbo closer to the front of the car so everything clears.
#7
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Re: Why Can't I Run a 4bolt Downpipe With a Cast Manifold? (blaze the chemi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blaze the chemi »</TD></TR><TR><TD CLASS="quote">So the 5-bolt DP forces the exhaust exit away from the block? That's what I'm getting from your explaination. The 4-bolt design would put it too close to the block? Got pics?
I'm wondering because I'm trying to decide what route I want to go (cast or tubular manifold) Thanks.</TD></TR></TABLE>
The 5 bolt housing is just shaped differently than the 4 bolt. In most cases it's really not a big deal, but when using a cast manifold (Blox, UGR, whatever) then it is. The compressor side won't clear at all on a 4 bolt setup.
This is the best side angle shot I have on this computer of a 5 bolt housing.
(It is a .63A/R Turbonetics housing)
Same setup w/ an SC61 E cover (the webbing has not been notched on this block, it would need to be notched to clear a turbo this size)
I'm wondering because I'm trying to decide what route I want to go (cast or tubular manifold) Thanks.</TD></TR></TABLE>
The 5 bolt housing is just shaped differently than the 4 bolt. In most cases it's really not a big deal, but when using a cast manifold (Blox, UGR, whatever) then it is. The compressor side won't clear at all on a 4 bolt setup.
This is the best side angle shot I have on this computer of a 5 bolt housing.
(It is a .63A/R Turbonetics housing)
Same setup w/ an SC61 E cover (the webbing has not been notched on this block, it would need to be notched to clear a turbo this size)
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