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Manifold bolts for headers and triple Mikunis


timsz

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Does anyone know the layout (position) of the manifold bolts with headers and triple Mikunis? There's 2 different sizes of bolts. There's regular bolts also that go into the head through the carbs, isn't there? N42 head. Any help? Thank you

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Thanks, I'll try and see what happens.

 

Another thing you should consider is don't re-use your old studs, get some new ones. These studs regularly break, especially the rear one.

 

Napa sells a stud kit of 10 count 8mm studs with nuts. Part number NOE-600-2604

 

Not 100% positive but think the carb manifold does not use the larger 10mm thread holes in the head, that's only for the FI manifolds.

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The Mikuni manifold has both sets of hardware, and can be used on either bolt pattern. You can use either depending on what head configuration you have. I like four bolts, less to tighten, less to drop.

 

Manifolds pre 75 won't have that dual use feature, and can be identified by the "humpy" nature of the flange...just like the original Nissan SU manifold. Flat spot for the EFI bolt is not present on them.

Edited by Tony D
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