Downpipe Flex?

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Nov 21, 2013 | 12:11 PM

Shownomercy

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Downpipe Flex?

From the turbo, my downpipe connects to catback via V band and then a regular exhaust out back.

Should I install a flex joint between the turbo and exhaust? IE somewhere in the downpipe. Turbo is mounted to engine block. Solid motor mounts.

Nov 21, 2013 | 12:35 PM

JT86SS

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From: roanoke,va

solid motor mounts, i would say no. i would personally run one anyway because the exhaust is allways moving unless everything is mounted solid (exhaust mounts) to the body. i've used a flex-pipe in my old setup, but i had the rubber motor mounts and rubber exhaust mounts.

Nov 21, 2013 | 03:10 PM

Shownomercy

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Ok cause I just worry about the stuff flexing and potentially over stressing the turbo housing.

Nov 22, 2013 | 04:16 PM

Compressor Surge

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From: Mackinaw, IL

Quote:

Originally Posted by Shownomercy

Ok cause I just worry about the stuff flexing and potentially over stressing the turbo housing.

I'm certain that the 16 gauge tubing would give out before the cast iron turbine housing.

Nov 22, 2013 | 04:30 PM

LT1RAY

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From: Colorado Springs, CO

I installed a small flex piece to the exhaust that connects to the downpipe. I have poly mounts. Here's a link to the unit I used.

http://www.siliconeintakes.com/produ...15b065f742542b

Nov 22, 2013 | 05:01 PM

SPRAYED 01

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Not sure if its the right thing to do but i run moly mounts and flex joints any where.

Been like this for over 10k miles with no issues

Nov 22, 2013 | 06:19 PM

Shownomercy

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Quote:

Originally Posted by Compressor Surge

I'm certain that the 16 gauge tubing would give out before the cast iron turbine housing.

A cast piece is much more susceptible to vibration fatigue than a cold worked pipe IMO.

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Nov 22, 2013 | 06:54 PM

Shownomercy

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Theres nothing stock left.

But yes, rubber mount on the pipe down the trans tunnel.

Nov 23, 2013 | 10:41 AM

#10

ACCLR8N

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From: Davisburg, MI

Not necessary.The rest of the exhaust has room to move. The heavy cast turbine housing is in no danger. Just be sure the weight is supported. I have flex joints in my cross over and wastegate pipe as they are mounted rigid at each end.