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Old May 10th, 2016, 08:56 PM   #121
The Jester
Join Date: Apr 2013
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Originally Posted by alec_av6 View Post
Been looking into buying a set of runners and port matching them to get the full gains from my j37 mani. When i installed the manifold, I bought a j37 intake manifold gasket, for a zdx i believe. However I do remember comparing that gasket to the stock unported j30a4 runners on my car and noticing that they are almost the same size diameter. To the guys that are running ported runners, what gasket are you using? If anyone has pictures of the gasket compared to the stock j30 runners that would be a major help, maybe I just didnt look close enough
The gaskets are identical at 45mm +- 0.5mm, your runners should have been nowhere near that size stock, however usually with the grime that accummulates around the entry of the port runners the runners can look much larger than they are (much being 1mm per side).

Without a caliper it's hard to tell between 43 and 44 mm, and I believe the stock exit on the j37 im is ~42.5 mm, the stock entry on the stock j30a5 runners is around 43+ mm

IIRC the gaskets are the same as I've had both sent to me, with no appreciable difference in them other than manufacturing differences between ports. You can use what you like for the gasket, the gasket used for matching has never made a difference in any of my ports.
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Old May 11th, 2016, 06:21 PM   #122
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Location: Salisbury MD
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Thank you oraclem19. So this means if I went with a p2r thermal gasket for the plenum I could use any from the j32, j35 or j37? Cause all I see listed is the j32 and j35
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Old June 7th, 2017, 04:18 PM   #123
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Dropping this post here as it was the main thread I used for the TB/IM upgrade

I saw some of oraclem19’s work polishing/porting TB’s & intake manifold’s and had him work on mine. Sharing pictures of the result and process for glueing which I did myself.

When I got the intake back it look amazing ! oracle spent a lot of time polishing and ensuring a quality job.

Unfortunately I wasn’t able to do before/after performance compare because I installed the entire 3.7 setup all at once along with polished runners which I did myself.

Shortly after installing I plugged in the flashpro and Dom tuned the car. I am very happy with the overall setup. Great torque !

Some notes on the install with help from oracle
-Permatex Black glue
-Used ultra thin washer to ensure spacing and 4 studs to guide the pieces together
-Applied glue to both top & bottom to ensure all gaps filled
-There was a lot of excess glue to be cleaned up but wasn’t too difficult with paint thinner
-Bought 4 tubes of glue, used 3

- Failed on the first try ��

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Bolt-ons and tuned by Dom
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Old June 12th, 2017, 05:19 PM   #124
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3.7L intake manifold for the WIN!
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