Does anybody know a good source of the M90 supercharger gaskets? I couldn't find any online, I've been starting to reverse engineer my own.

There's a thin sheet of coated steel between the supercharger, shaped like:


I'm thinking of getting this lasercut out of copper or something.

There's also the rectangular sort of "O-ring" between the supercharger and the outlet elbow, which I can't find either. I'm not sure yet how I would remake one of those.

 

Aluminum wound be able to crush better for a seal , just my take

There is the possibility of the M90 having more of a MAF for the ECU data maps to optimally calculate the injector pulse width

Your injectors are specific to your supercharged version identified by a color band in the following TSB

There is a O - ring vendor that has them all to choose from

Editing

Couldn't find TSB but I think yours has the red band

 

I never thought of aluminum as softer than copper but apparently its true. It's also significantly cheaper which is a bonus! I have a few choices with the lasercutter, 5052 is softest.

I was able to get all the simple O rings from theoringstore.com. Or at least my first attempt at sizing them right. The other supercharger gasket is what's on the elbow here: https://www.ebay.com/itm/292156992334. It was sort of a squishy O-ring material.

 

Your caustic blowby gasses would make aluminum a bad choice

 

XJR Fuel Injectors - Jaguar Forums - Jaguar Enthusiasts Forum

 

Checked em tonight, they all have the red band.