Stud or bolt for V&H 4-1?

[txironhead]

PO had bolts on the V&H 4-1 on my '81 GS750EX. I was thinking about switching them out with studs, then did my homework here. Either way, I've got to get new fasteners for the exhaust.

Should I get the stainless steel allen bolts or studs? The allen bolts would match the rest of my engine (got the stainless bolt kit for my bike, goodbye PITA philips screws!) and yes, I use anti-seize. Is the size/thread 8mm x 1.25? If I go with studs, what size should I get? If I go bolts, how long should they be? I can find 8mm studs at my local Napa (saw them today).

Is the V&H flange the same distance from the head as the factory exhaust?

[chef1366]

I use bolts on my 4-1. I have them off all the time and there is no problem. I think it's just a personal choice. Either will work.

[robertbarr]

Is the size/thread 8mm x 1.25?

The charts here might help. Maybe not...

http://www.boltdepot.com/Fastener%2DInformation/Printable-Tools/Default.aspx

[rphillips]

Personally, I'd rather use studs. With the stud, you have a chance of the nut screwing of the stud, or the stud screwing out of the head, eather will get the job done. If one is seized, the other may not be. Also you can get penetrating oil on both sides of the nut & it only has to penetrate appx. 1/8". With the bolt in the head, you only get the penetrating oil on one side, & it will need to penetrate maybe 3/4" up the threads into the head.

[txironhead]

Anyone know what size studs I'd need? And are they 8mm x 1.25 pitch?