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Vancouver Auto Chat 2016 VAC Community Head Moderator: Raid3n

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Old 10-19-2017, 09:52 PM   #1
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exhaust modification difficulty?

Is it easy to make an aftermarket exhuast from one car fit another brand and model car? for example, how difficult is it to put HKS axleback exhaust for RX-7 to a Supra or Altezza
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Old 10-19-2017, 11:50 PM   #2
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Can you weld? Probably not if you're asking the question.

The short answer: anything can be done if you have enough time and money.

The longer answer: usually it's easier and more time effective to just start from scratch, unless the cars are closely related. Modifying a VW Jetta exhaust to work on a Passat, for instance, is potentially going to be much easier than modifying that same exhaust for an Rx-7. BUT, there can be massive differences in the exhaust design even from the same manufacturer and similar models...so it's not a hard and fast rule.

You need to have both potential cars up on a lift in order to really know how close they might be.

-Dave


FWIW, I did Vibrant Performance's prototyping in the early 2000's...so I know what I'm talking about.
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Old 10-20-2017, 08:31 AM   #3
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Originally Posted by CCA-Dave View Post
Can you weld? Probably not if you're asking the question.

The short answer: anything can be done if you have enough time and money.

The longer answer: usually it's easier and more time effective to just start from scratch, unless the cars are closely related. Modifying a VW Jetta exhaust to work on a Passat, for instance, is potentially going to be much easier than modifying that same exhaust for an Rx-7. BUT, there can be massive differences in the exhaust design even from the same manufacturer and similar models...so it's not a hard and fast rule.

You need to have both potential cars up on a lift in order to really know how close they might be.

-Dave


FWIW, I did Vibrant Performance's prototyping in the early 2000's...so I know what I'm talking about.
What's your experience/opinion on vibrant's exhaust gaskets? Good chance of being able to reuse them?
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Old 10-20-2017, 12:55 PM   #4
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Originally Posted by CCA-Dave View Post
Can you weld? Probably not if you're asking the question.

The short answer: anything can be done if you have enough time and money.

The longer answer: usually it's easier and more time effective to just start from scratch, unless the cars are closely related. Modifying a VW Jetta exhaust to work on a Passat, for instance, is potentially going to be much easier than modifying that same exhaust for an Rx-7. BUT, there can be massive differences in the exhaust design even from the same manufacturer and similar models...so it's not a hard and fast rule.

You need to have both potential cars up on a lift in order to really know how close they might be.

-Dave


FWIW, I did Vibrant Performance's prototyping in the early 2000's...so I know what I'm talking about.
So any muffler shop or mechanic who can weld the hangers will be able to do it, if I pay for shop time ? I am assuming the pipes and where the connectors and gaskets are will need size fitting and new gaskets .
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Old 10-20-2017, 01:49 PM   #5
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What's the point. Depending on the tunnel position and muffler location it may require the entire exhaust to be reworked. Of course it "can" be done but at the end of the day only you will decide if it's actually worth it.

What exactly are the cars your speaking of. What is the exhaust from and what's it going on?

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Old 10-20-2017, 04:28 PM   #6
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Just go to the exhaust shop. Get him to cut your muffler off and weld/clamp in a pipe, retaining your cat and possibly resonator. Call it good. Should cost you <$100

Now you can go brap around town and sound cool while you're doing it.
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Old 10-21-2017, 12:08 AM   #7
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Just go to the exhaust shop. Get him to cut your muffler off and weld/clamp in a pipe, retaining your cat and possibly resonator. Call it good. Should cost you <$100

Now you can go brap around town and sound cool while you're doing it.
my exhaust is rusted, 17 year car. want cheap way to replace, buying used. If installation is costly, then there is no point, I need to keep on looking
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Old 10-21-2017, 09:20 AM   #8
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In that case you're better off buying a cheap stock spec exhaust off eBay or RockAuto that bolts up.
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Old 10-21-2017, 09:35 AM   #9
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What's your experience/opinion on vibrant's exhaust gaskets? Good chance of being able to reuse them?
Presuming we are talking about the standard metal-sandwich exhaust gaskets, nope. They are definitely not meant to be reused.

-Dave
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