Posts made by Calum

But why? You need a master cylinder to match the slave cylinder... Unless that is specifically for the rs125 slave cylinder.

If you want fancy levers check out asv.

@Jgb19830 Okay, yeah how interested. CDI could be faulty.

I'm not sure how they work under the hood.

Looking smart bud!

A little bit off topic...but yes/no.

It may do, but what you'll really notice is the spread of power across the rev range.

Yes I would

That pipe looks savage.

Coming together nicely!

What is the eta for completion.

@Jgb19830 Meh? Gets old quick. Noisy but fine once past 6k

I like to disconnect it for a grin now and then!

I had this when my CDI went faulty.

Could be that you haven't adjusted it appropriately, or the cables are the wrong way around.

Disconnect the cables from the valve then do it. Does it still do it,.

Yes, if the engine hasn't been run, then the servo will only sweep one way. Then when the engines running, the powervalve moves. Then if you turn the engine on and off, it'll do the full cycle again.

@oldman FFS

@oldman I must be thinking 4FU and 3MB.

One of them didn't fit.

Power valve operating as expected

@Blaze-Vile Yeah, see if the piston is damaged.

It could be that you have exhaust leakage.

@Blaze-Vile Just take the exhaust off and have a nosey. Literally 10 minutes and you'll know if it needs a new piston.

Best take the exhaust off and have a look up the port. See if the piston/bore is damaged.

You got the right colour powerband installed?

@oldman Yeah this.

The manual specifies both the bore and stroke for the 3BN, I'm sure. I don't have it to hand.

It is so minor I doubt it'll be too much of a problem. Powervalves are not interchangeable though.

As said, doubling up on base gasket will do the trick. My worry is that the con rod is designed to stretch and compress, how close will it be at 12k RPM is anyones guess!

@oldman If it was running a 3MB and you put a 3BN barrel on it, the stroke will be too long. Is it the crank, is it the rod? I don't know. But the stroke is definitely different. So you will want to make sure you have clearance.