Engine Thicken intake manifold gasket

Thicken intake manifold gasket

Saw this on a chinese corolla forum.
I'll try my best to translate it.

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DIY thicken aluminum gasket for 93-97 rolla (I believe it works for other cars too)

Used 1cm thick aluminum plate to cut a gasket by a friend. Mid-range feel so smooth, and better throttle response.


Was scared that the intake manifold will hit something (引擎貍M油軌, I don't even know what it means) so I just used a 1cm thick aluminum plate. Found out that within 1.7cm will do just fine. Anything over it will hit something.

Stock (left) DIY (right)




why the hack they make that?
Theory: By doing this, you can increase the volume of the intake manifold so that more air can be "stored" there for better performance.

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What do you guys think?

sounds fine, but i'm sure the newer vvti intake manifolds are fine.... total air stored is around.. 5 cubic inches..not a lot of extra air IMO..

In one of those pictures there is a toyota part sticker. Wonder what that is?

Which pic? That box/paper bag in the last 2 pic? maybe that's the packing of the stock gasket?

have you done any dyno on this?

no no, it's not mine. I saw it from a taiwanese corolla forum and bring this topic there. Their butt dyno said mid range improved plus quicker throttle response.

did it make a cool vtec sound

i didnt know vtec had a cool sound lol