I have an '01R and due to some issues, I want to change the way my exhaust manifold fastens to the head. Currently there are 2 studs with locking nuts, and 7 bolts. I want to install 7 more studs with 7 more locking nuts. I can't find the part number for the stud in the 1998 service manual but I know they're M8 x 1.25 threads.

So my questions
1) Does anyone know the stud part number, or at least stud length?
2) Does anyone see a problem with what I want to do?

For reference (from service manual):

1998 B18C5 (what I want my install to look like)


1998 B18B1/B18C1 (What my ITR exhaust manifold install resembles)

 

http://www.acuraautomotiveparts.org/...s=&view=normal

 

Huh. My 98 ITR only had the two studs.

I brought one of the bolts to NAPA and bought new studs there that fit fine. I can't remember the length.

-Chris

 

Awesome resource. Thanks a lot.

For anyone searching in the future, the part number for the head studs is:
90026-PE0-000 BOLT, STUD (8X37)

 

Hmm, maybe it's a 97 manual I was looking at, or maybe for a different market.

So I take it you have done this to your R? any issues?

 

FWIW, ARP makes a M8x1.25 stainless steel stud/washer/nut kit. They're not Honda specific so they're kind of a PITA to find in their catalog.

If you need the part number LMK.

 

can i get part number please im trying to find these exhaust bolts/studs aswell my head has none and someone use bolts before and messed them up im guessing the arp ones go in with Allen key unlike stock ones ? how do they go in ?