Exhaust Manifold Collector Gasket- which side up?

norcal_mike · May 18, 2020

Let me first say, working on my 68 Charger is alot like fishing, it's not fun, it's rewarding.

I was chasing down an exhaust leak, which led to a broken stud on the tube nut, driver side cylinder head. Removed head, removed stud, new stud, got cylinder head back on the block, installed manifold with remflex gasket and now installing the metal exhaust gasket to the downpipe.

I didn't have the foresight to figure out which side the flange gasket goes up. There is an outer and inner ridge. Can anyone tell me which side goes up? I tried to test fit it, but its such an awkard and barely reachable that I cant tell if the fit is correct on the down pipe.

PRND21 · May 18, 2020

I always put the raised side towards the manifold, but I don’t think it really makes a difference. If the manifold or pipe are rusty or pitted some, I’d coat both sides with a little Copper Coat sealer.

norcal_mike · May 18, 2020

Thanks that is helpful.

PRND21 said:
I always put the raised side towards the manifold, but I don’t think it really makes a difference. If the manifold or pipe are rusty or pitted some, I’d coat both sides with a little Copper Coat sealer.

Billccm · May 18, 2020

I second the ultra copper. I used felpro gaskets that were symmetrical.

91r/t · May 19, 2020

I use the thicker graphite fabric like gaskets for that rust reason. Seems to seal off the manifold more than the thin tin ones.

mquinn66 · Jun 18, 2020

91r/t said:
I use the thicker graphite fabric like gaskets for that rust reason. Seems to seal off the manifold more than the thin tin ones.

Who makes the gaskets your talking about?

norcal_mike · Jun 18, 2020

These are OEM style shim gaskets from Mancini, however I ditched them and used REM, no leaks at all.

91r/t · Jun 18, 2020

mquinn66 said:
Who makes the gaskets your talking about?

REM or I’ve found some
at auto parts stores where you can search the gaskets.

mac · Jun 19, 2020

https://www.amazon.com/gp/product/B00B2HMF7G/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

norcal_mike · Jun 20, 2020

mac said:
https://www.amazon.com/gp/product/B00B2HMF7G/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

Those are the ones. Also used them on my exhaust manifold. Worked great.

dadsbee · Jun 20, 2020

What I used and zero issues thus far..

mac · Jun 21, 2020

norcal_mike said:
Those are the ones. Also used them on my exhaust manifold. Worked great.

https://www.amazon.com/dp/B00B2HME7...olid=2ZUP4SGCTK7PK&psc=1&ref_=lv_ov_lig_dp_it

Exhaust Manifold Collector Gasket- which side up?

norcal_mike

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PRND21

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norcal_mike

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Billccm

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91r/t

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mquinn66

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norcal_mike

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91r/t

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mac

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norcal_mike

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dadsbee

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mac

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