Hi  All,

            I plan on building a new stainless exhaust for my bike when it arrives and am trying to work out a few things and source a few parts in advance.

Can anyone tell me what dia the standard headers are? AND...is there a recommended size...or what size do some of the performance systems use (V&H, Toxic etc...)?

Thanks

Howard

There is a bit of science in building an exhaust, if you have your heart set on building one it is better to copy one that actually makes horsepower when mixed with the right components, no point making a noisy straight through enviroment raping horsepower killing look at me i`ve got a harley pile of crap because its going to cost a few bucks, Better off waiting till you have the bike, work out your riding style and get it to handle and stop like you want. These are only my opinions, remember loud pipes piss neighbours off.

 

What's your bike gunna be when it arrives ?

Have a look at RB Racing site might have some imfo,unless you dyno before & after you won't know if it's an improvement or not,

Thanks guys....I'm not new to building exhausts. I modifed a set of 4 into 1 Camaro headers to fit my 98 Chevy Suburban and then manufactured a full dual 3" stainless system including 'X' pipe.





More pic's here... http://smg.photobucket.com/albums/v35/hquick/twin%20exhaust/#!cpZZ3QQtppZZ32

 

This site states some header sizes and also has pics to give you a bit of an idea maybe.

The FAQ section at the bottom of the page has some relevant info you'd be intersted in.

 

exoticchoppers.com/VROD

 

2", 2.125", and 2.250" are the other sizes mentioned on some of the other sites. 

2 " is the factory header size I think.

 

Try Googling a few of the relevant key words and see what comes up. Some interesting stuff out there.

Hquick nice you do nice work!

well the V Rod motor would run a much different system as 60 degree watercooled 4 valve car type rods car type bearings. find someone with a Destroyer or go to Heathcote park next meeting take a look at there pipes they are stainless. very loud but you could fit a silenlencer for street.

Thanks for the info guys. I like some of those setups on the exoticchoppers site (thinking something like the 'prowler' series)....and some handy info there. I'm thinking about something with the custom type heat shields. I'll probably polish the entire system for now...and maybe black ceramic coating later.
Looking at doing the entire bike in black with polished wheels and exhaust for now. Thankfully I have access to all of the necessary equipment and materials here at work.
Has to be easier than laying on the ground building that system for my Burb.

i been a exhaust tech since high skool an still fuck with pipes made em for superformances 55 chev an paynes corvette also made the pipes on natlis turbod supacharged trike yrs ago an on my twin turbod fxr in the 90s ect an shit loads more if you want i got a forula for workin out lengths i been usein since the late 70s but ill work it out lengths pipe sizes an where to go up a size i can also put u onto a place in brissy thatll sell you all the stainless bends ect at a good pric also they have the 2 into 1 collectors in staino if you dont want to make it and there are some pretty sweet mufflers that give good numbers on the dynos as well from the same mob pm wat ya motor is an wat basic internals an ill help if you want ..also dont forget puttin stainless on a bike itll go a dirty goldish colour also there is a risk of it snappin at the flange as stainless is fairly brittle wat you gunna use 316 or 304 .cheers

http://www.hdforums.com.au/Default.aspx?tabid=71&forumid=10&postid=388749&view=topic&tpage=1

Ol Skool....I'll more than happily accept any and all advice you have to give. Thankyou.

Nothing at all wrong with the stock V rod headers they are 2" staino,
Mufflers can be easily modified with aftermarket baffles,
REMOVE the collector between muffler and header pipes and there you have it
modified exhaust which will hold up to any Rego Inspection...

ill pm you on monday about the pipes gotta pik couple bikes up an wont be near comp n shed for few days
cheers as wayne said they r staino an ya can buy the mufflers v & h like the ones they got on the vrod muscle doin a heap powdercoating soon for a bloke that wants wheels an few covers done on his muscle rod

Thanks again guys. Only issue with using the stock headers is I want both to exit on one side like the standard rods. Muscle exit one on each side. Looks too 'Honda'ish' to me. Lol!

ok got few piks of the staino muffla i use and made back in the 90s but these dont have the flange end like on my ol blue softy i done an fitted about 14 of em mate had the dies but the clown ditched em as he said to much trouble to make good numbers an power all threw the whole rev range





 



 

nearly forgot if ya go 2inch from the port and then make ya primaries 36inches into a 2into one collector like on the car extractors then 6inches of 2 1/2 into the muffler with a 2 1/2 30degree turnout or down will work pretty good thats wat ive done on a few bombed up rods few yr back

Thanks for the info....awesome work.
I'm not 'upto date' at all with building bike stuff. I was thinking something like a 2 into 1 as you suggested or a twin system right through?

2 into 1 best way to go on the rods hey actually best on all twins unless ya only after top end speed on the salt or freeway i been watchin here over the last few yrs an cant get over why ppl buy the v and h big shots and the other pipes they make they not as good as hooker headers and bassini but each to their own must be cause they look ok
i gotta do some work on a muscle in next few weeks its got the v and h twins he said he noticed it had better top end but lost mid range a fair bit so im gunna sort the heads abit an see wat happens then

Please keep me informed how the work on te Vrod goes. I'll take your advice and go with 2->1.
Hooker are a good brand and well respected in the US. Would have bought some for my Chev....but would have had to cut them up anyway due to right hand drive and 4WD (front drive shaft/frame rail space issues).
What do you use for muffler packing? Fibreglass?

not glass get a webbing from the supplier i get bends n mufflas from sell it in small amounts which suits me i was lucky had my own exhaust shop for many yrs an still get good prices on bits