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-   -   pre-90 exhaust manifold depth? (https://forums.turbobricks.com/showthread.php?t=356800)

oldschoolvolvo 09-10-2020 02:14 PM

pre-90 exhaust manifold depth?
Anyone have the measurement between the exhaust port flange and the turbo mounting flange on a pre-90 manifold? Is the measurement the same or different than a 90+ manifold?
(I imagine the measurements are close to the same, but if someone could measure it that would satisfy my curiosity :))


neptune 09-10-2020 02:33 PM

I've been thinking about doing this for a couple months now so thanks for the motivation.
I get 2-1/8" on the pre -90 and 2-3/8" on the 90- I have lying around. Plus/minus 1/16"

Measurement not mega-accurate, but close. I laid the exhaust ports flat on a countertop with the bulge of the manifold hanging over the edge, clamped the flattest board I have across the mounting flange, and measured down to the countertop. The step on the flange for mounting a factory turbo is not included in that measurement, I am measuring to the flange itself with the studs.

Hope that helps some.

oldschoolvolvo 09-10-2020 02:51 PM

Thanks! Just what I was looking for.

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