DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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Old 04-20-2008, 06:31 PM
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Do you guys normally run a flex section on your downpipe? I noticed the factory exhaust doesn't have one and that would save me $50.
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Old 04-20-2008, 06:41 PM
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I was wondering this too. I see some do and some don't. I know some do because it helps take the load off the manifold, that is, the weight of the turbo and exhaust pulling down on it.
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Old 04-20-2008, 06:54 PM
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no flex section here.
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Old 04-20-2008, 07:12 PM
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Originally Posted by patsmx5 View Post
I was wondering this too. I see some do and some don't. I know some do because it helps take the load off the manifold, that is, the weight of the turbo and exhaust pulling down on it.
it has nothing to do with weight... it's that the catback is on hangers attached to the car body which doesn't torque with the engine. so basically everytime you rev or load the engine and it rocks to the side you are torque loading you downpipe. Not so stellar. If you don't want to pay for or use a flex section just put a bracket in that bolts to your bellhousing (like stock) and you won't over stress the turbo/manifold.
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Old 04-20-2008, 08:53 PM
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I have one at the end of my downpipe. I would recommend using one.
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Old 04-20-2008, 11:03 PM
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use it if you can will save you broken hangers or cracked welds in the future. ebay them i think i paid $36 for my and it is 3" stainless.
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Old 04-20-2008, 11:47 PM
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Yeah, I think I will end up using one, I just wanted to know how needed one was.
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Old 04-21-2008, 08:59 AM
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I do because I run a paper thin ssautochrome mandifold
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Old 04-21-2008, 10:33 AM
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They are also helpful in DIY exhausts that might not be perfectly aligned. They give you a little "wiggle room" when it comes to fitment.
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Old 04-21-2008, 11:36 AM
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If my BEGI DP didn't have the flex section it wouldn't have fit.
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