echappe
Well-Known Member
Can anyone tell me what the thread type is on the 8 MM studs (1.25, 1.50 or 1.75)
exhaust manifold studs
- Thread starter echappe
- Start date
yeah, they are standard M10
Down pipes are M10, manifold on head is M8.
M8 studs are around 0.40, but you can always clean the threads on existing ones. Not worth plating a stud you can't see. For intake manifold be sure you get M8 nuts with 12mm head, not 13mm, makes it much easier to install and that is the OEM nut.
https://www.belmetric.com/nj8x12-jis-nut-p-205.html?cPath=3_58
Chris
https://www.belmetric.com/nj8x12-jis-nut-p-205.html?cPath=3_58
Chris
Bob,
+1 on Belmetric for the nuts.
I had my studs re-plated instead of buying new ones because the many different lengths and configurations of studs on the E3 was such that I would've not found exact replacements so studs would be sticking out farther, etc. Granted, the Si has the injected intake manifold, but to underscore the point, it had, IIRC, 4 or 5 different stud types on it. Not even Belmetric will have exact replacements.
The plating cost of hardware for me was essentially flat after a threshold I had already met so it was in essence very little cost to just keep throwing hardware in the re-plate pile.
+1 on Belmetric for the nuts.
I had my studs re-plated instead of buying new ones because the many different lengths and configurations of studs on the E3 was such that I would've not found exact replacements so studs would be sticking out farther, etc. Granted, the Si has the injected intake manifold, but to underscore the point, it had, IIRC, 4 or 5 different stud types on it. Not even Belmetric will have exact replacements.
The plating cost of hardware for me was essentially flat after a threshold I had already met so it was in essence very little cost to just keep throwing hardware in the re-plate pile.
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