Which exhaust studs? - SV650.org

16-12-10, 11:34 AM

what studs should i use? ally,ss,titanium ?

and what type bolt should i use ?

and where to find them, the cap head i took out was m8 x 25 i think its 1mm pitch not sure

thanks

andrewsmith · 16-12-10, 12:19 PM

http://www.tastynuts.com/Products/SV...Mount_Bolt_Kit

Theres the bolt specs are on there.

I'd say stainless as long as the right spec (I plead insanity on material spec!)

16-12-10, 02:32 PM

this may be seen as controvercial but I've prefered to remove the double treaded bolts and replace them with some larger standard M8 bolts.

Spin a nut on down to the head of the bolt then insert the bolt with copper slip into the cylinderhead until its snug then spin the nut back down the thread until it pins the header in. If you use the right length of bolt intially it'll only spin down a couple of turns so there's no unsightly bolt head pretruding.

I cant really understand the logical merit of doing htis but it seems like a good idea, didnt cost me anything (already had some stainless nuts and bolts knocking about) and for what ever reason I'd suspect it would make future removal pretty easy.

mikerj · 16-12-10, 04:18 PM

Quote:

Originally Posted by Owenski

this may be seen as controvercial but I've prefered to remove the double treaded bolts and replace them with some larger standard M8 bolts.

Spin a nut on down to the head of the bolt then insert the bolt with copper slip into the cylinderhead until its snug then spin the nut back down the thread until it pins the header in. If you use the right length of bolt intially it'll only spin down a couple of turns so there's no unsightly bolt head pretruding.

I cant really understand the logical merit of doing htis but it seems like a good idea, didnt cost me anything (already had some stainless nuts and bolts knocking about) and for what ever reason I'd suspect it would make future removal pretty easy.

You have the advantages of a stud in that you don't have to turn the threads in the alloy head to apply the clamping load, but you have the disadvantage of a bolt as you still have to remove the entire bolt from the head to remove the exhaust.

Stainless resists corrosion, but has a strong tendency to gall so should be installed with plenty of anti-seize compound. Stainless or plated steel studs and brass nuts might be a best compromise.

16-12-10, 04:30 PM

titanium, my exhaust is Ti, so why not the bolts.

16-12-10, 06:59 PM

cheers lads

yorkie_chris · 16-12-10, 07:47 PM

I use stainless studs (or even cut down bolts)

16-12-10, 11:28 PM

what size are you using YC (length) ?

yorkie_chris · 17-12-10, 10:34 AM

Whatever fits, 60mm maybe, look at what came out and add 20mm or so on... only needs enough to slide a nut on plus a bit.

17-12-10, 01:58 PM

ok cheers about 45mm then

16-12-10, 11:34 AM	#1
barwel1992 Guest Posts: n/a	Which exhaust studs? what studs should i use? ally,ss,titanium ? and what type bolt should i use ? and where to find them, the cap head i took out was m8 x 25 i think its 1mm pitch not sure thanks

16-12-10, 12:19 PM	#2
andrewsmith Member Mega Poster Join Date: Apr 2010 Location: Newcastle upon Tyne, Just south of salad dodging country Posts: 7,750	Re: exhaust stud's http://www.tastynuts.com/Products/SV...Mount_Bolt_Kit Theres the bolt specs are on there. I'd say stainless as long as the right spec (I plead insanity on material spec!) __________________ RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi

16-12-10, 02:32 PM	#3
Owenski Guest Posts: n/a	Re: exhaust stud's this may be seen as controvercial but I've prefered to remove the double treaded bolts and replace them with some larger standard M8 bolts. Spin a nut on down to the head of the bolt then insert the bolt with copper slip into the cylinderhead until its snug then spin the nut back down the thread until it pins the header in. If you use the right length of bolt intially it'll only spin down a couple of turns so there's no unsightly bolt head pretruding. I cant really understand the logical merit of doing htis but it seems like a good idea, didnt cost me anything (already had some stainless nuts and bolts knocking about) and for what ever reason I'd suspect it would make future removal pretty easy.

16-12-10, 04:30 PM	#5
toxic Guest Posts: n/a	Re: Which exhaust studs? titanium, my exhaust is Ti, so why not the bolts.

16-12-10, 06:59 PM	#6
barwel1992 Guest Posts: n/a	Re: Which exhaust studs? cheers lads

16-12-10, 07:47 PM	#7
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Which exhaust studs? I use stainless studs (or even cut down bolts) __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

16-12-10, 11:28 PM	#8
barwel1992 Guest Posts: n/a	Re: Which exhaust studs? what size are you using YC (length) ?

17-12-10, 10:34 AM	#9
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Which exhaust studs? Whatever fits, 60mm maybe, look at what came out and add 20mm or so on... only needs enough to slide a nut on plus a bit. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

17-12-10, 01:58 PM	#10
barwel1992 Guest Posts: n/a	Re: Which exhaust studs? ok cheers about 45mm then

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