3xv ports

[teezer]

has anyone done anything about the shape of the exhaust port on the outside of the cylinder? it dont line up with the exhaust pipe...

[Crank]

What are the pipes and which cylinders?

[EEKNOWS]

has anyone done anything about the shape of the exhaust port on the outside of the cylinder? it dont line up with the exhaust pipe...

The mismatch is planned, deliberate and calculated. Grind it and loose some HP.

[teezer]

they are 3xv-oo cyls(3xv4)..i raised d top n hit d water jaket..got it alu welded up,so saved d cyls.....i just thought them jap b'stards have it worked out so u cant mess wit the shape of the ports

[teezer]

oh ye, n there std pipes

[teezer]

sorry...cyls are 3xv10, so are theese sp cyls???

[teezer]

heads are 3xv01, y-1 bottom cyl and y-2 top cyl.. both are o ring heads, are these standard for my model(3xv4)

[Warwick]

3XV10 are early SP cyls. That's why they don't match up with the exhausts. They use a thin adapter flange piece between the cyl and the pipe flange itself to take the D shape cyl exit to a round shape where it meets the pipe. Sounds like you are missing the adapters?

If you post up some pics of the flange end of the pipe I can tell you if you have R or SP model pipes. Both types are rubbish really, but the SP pipes will at least work a bit better with the SP cyls once you've sourced some flange adapters... Probably easier to track down some race pipes with flanges compatible to the SP cyls instead?

[teezer]

cheers warwick, i thought i had cracked the restriction problem once i took d pipes off...oh well u learn sumtin new every day lol

[eyrey1]

dan [gecko] had some ally ones i think they were about 80 quid if i remember correctly !

[teezer]

here are the ex flange pics

[teezer]

here is pic of bike...nearly back together

[jcsnook]

Looks like you've got a bit of a mongrel like many of us have (myself included).  SP cyclinders and heads on a wet clutch R motor.  Forks and swingarm appear to be standard R, as are mine...

[Warwick]

Sorry Teezer, it's a side view of the first 6 inches or so of the pipe header I'd need a pic of to Id which model pipes they are. Should have been clearer...

[teezer]

top cyl exhaust