Exhaust Confusion

[short1]

I bought new headers on ebay, so I pulled out the exhaust that came on the bike when I bought it to see what kind of condition the flanges were in. Realized they are 2 different headers hmm they have different flanges and are 2 different lengths wtf? I go back and look at pics of the pipes I bought (still waiting for them to show up) and they are yet another style. The listing for what I bought said they are for an 82' xs400 heritage, my bikes an 81', should be good right? Here's some pics, can anyone polease let me know what i'm looking at.

 

[drewpy]

the bottom picture uses a split collet with the headers.
look a bit like these

http://www.ebay.ie/itm/1982-Yamaha-...600763?hash=item43eb117d3b:g:0XkAAOSwoudW2JBi

 

[short1]

Thank you, that's what i was hoping! Once I was looking at 3 different styles I thought maybe I bought the wrong pipes. For the bolt flanges are they year/make specific?

 

[xschris]

Looks like aftermarket head pipes in the bottom pic. This is what a 80-82 sohc xs400 stock exhaust looks like. I would stick with this setup if I was you.

 

[drewpy]

Thank you, that's what i was hoping! Once I was looking at 3 different styles I thought maybe I bought the wrong pipes. For the bolt flanges are they year/make specific?

look like motad or similar pipes. I bet if you take measurements from the ex studs to the inner exhaust you could buy what ever fits

 

[short1]

xschris the bottom pic is what I bought, too late! lol I'm aware of the fun I'm going to have tuning for open exhaust, thanks for the concern
though
drewpy, so if I pick up some regular xs400 connecting flanges and collars it should be no problem then?
wow all this subject searching is...exhausting sorry i couldn't resist!

 

[drewpy]

xschris the bottom pic is what I bought, too late! lol I'm aware of the fun I'm going to have tuning for open exhaust, thanks for the concern
though
drewpy, so if I pick up some regular xs400 connecting flanges and collars it should be no problem then?
wow all this subject searching is...exhausting sorry i couldn't resist!

don't think so as the originals have a longer end, need to be longer methinks

 

[short1]

You wouldn't happen to know of some longer collars maybe from a different bike would ya? I measured the old pipes and the lip is about 1 3/8" from the end on one and about 1/2" on the other, so I guess split collars close to about 1 1/2" would be about what i'm looking for. Just when i thought i was figuring it out...

 

[short1]

Found that stock split collars are about 1"

 

[short1]

Had a thought, what if I had some split collars welded to the head pipes where I need them to be? Then I could just use stock flanges

 

[short1]

I ended up picking up some 82' split collars and flanges, then got a 1 1/2" coupler from the auto store and cut a 5/8" section off each end and they slid right up to the lip, perfect.

 

[drewpy]

nice one