wildboar58
XS650 Enthusiast
these are the pipes that came on the bike when i bought it .they welded a smaller diameter pipe in side the straight section to create backpressure.
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home made pipes
- Thread starter wildboar58
- Start date
hi wildboar,
did you mean to ask:- should you keep 'em or should you scrap 'em?
IMHO, if you are happy with how they look, keep 'em.
They will work OK as is and will work better if you put shorty slip-on mufflers on the ends.
OTOH, if you don't want black high pipes on your bike, rather than scrapping them,
use the list's classifieds to find them a new home.
BTW, it isn't for back pressure. It is to accelerate the flow of exhaust gases. Back pressure is a bad thing, like stuffing a potato up the exhaust of a school bus.
"yes" I think they will work, or "yes" you should scrap them?
wildboar58
XS650 Enthusiast
i meant yes they will work. i think i would like to put on some glass packs and run them that way for now .i like the way they look.
Personally, I prefer the stock type set-up with separate pipes running down each side of the bike. It works better for centerstand support (when it's in the "up" position), and clearance for oil and filter changes.
wildboar58
XS650 Enthusiast
hoos racing has some that are mild steel .i can weld on my own tips .are those a good choice?
Hi wildboar,
you know how the list loves to see photos. How about you please bolt the black pipes onto the bike and post some photos of the complete install?.
Not having seen them, I can't weigh in on them. You probably should consider what you're using the bike for. Putzing around? Track days? You want the gases to scavenge quickly. Think of it like the garden hose. With no nozzle on the end, the water just sort of pours out. Put a nozzle on it and it comes out fast. There is a science to it. Too small and we can't push enough gas out.
I like this explanation.
wildboar58
XS650 Enthusiast
i'll take pics this weekend and post.i like that explanation ,i'll mostly be put zing around i havent rode in a while.but i want it to move when i need it too.
What diameter pipe are they made from? If 1 3/4" pipe the smaller pipe on the outlet will improve them a bit. Installing the AR inserts is even better.
The 1 1/2" pipe is a good size for head pipes on engines of about 500 to 800 cc's. The 1 3/4 " is good for larger engines.
This gives a bit more exhaust flow over stock but not so big the exhaust flow slows down. You want to keep exhaust flow fast enough so it can clear the exhaust out of the head so it doesn't dilute the incoming air fuel charge.
Too large of the pipe slows the exhaust flow enough so some exhaust stays in the head.
I used 1 1/2" pipe when I built the head pipes for my 75. I cut up an old set of stock pipes so I had the inner pipe with the mount flange plus a couple inches. Almost where the first bend started. I then welded my 1 1/2" pipe to that. The bit of stock pipe acts as an Anti Reversion insert.
Leo
The 1 1/2" pipe is a good size for head pipes on engines of about 500 to 800 cc's. The 1 3/4 " is good for larger engines.
This gives a bit more exhaust flow over stock but not so big the exhaust flow slows down. You want to keep exhaust flow fast enough so it can clear the exhaust out of the head so it doesn't dilute the incoming air fuel charge.
Too large of the pipe slows the exhaust flow enough so some exhaust stays in the head.
I used 1 1/2" pipe when I built the head pipes for my 75. I cut up an old set of stock pipes so I had the inner pipe with the mount flange plus a couple inches. Almost where the first bend started. I then welded my 1 1/2" pipe to that. The bit of stock pipe acts as an Anti Reversion insert.
Leo
wildboar58
XS650 Enthusiast
thanks Leo, they are 1 1/2 pipe
They should work ok.
I run my pipes and mufflers underneath like the stock ones run so I can't say which mufflers to use with high pipes.
Leo
I run my pipes and mufflers underneath like the stock ones run so I can't say which mufflers to use with high pipes.
Leo
wildboar58
XS650 Enthusiast
ok thanks for your help.i am going to look into the a r inserts
