Front cam chain guide replacement.

[Paul Rolfe]

Hi everyone,can anyone explaine how the new style cam chain guides are ment to work on the early xs1 ? As you all know the early ones were flat. The new style ones sold by Yam bits & Mike's xs have a channel in them. They advertise them as a replacement for my xs1b. Mine arrived and I was shocked to find the cam chain to wide for the channel in the guide. Any advise on this would be very much appreciated.

 

[Jim]

Pics?

 

[Paul Rolfe]

 

[Paul Rolfe]

Pics?

 

[Its been a long time]

Maybe I'm a bit dim, but I don't see a problem?

 

[Paul Rolfe]

My question is,should the chain sit in the channel,or does the chain run on the outer edges ?

 

[AUTOMAN]

The bloody pins are wider than the channel!
wrong chain or another POS from mikey's?

or both?

 

[Paul Rolfe]

The bloody pins are wider than the channel!
wrong chain or another POS from mikey's?

or both?

I thought it looked wrong lol. The chain has the original part number so I'm guessing that's right. But what your saying is the chain should run inside the channel ?

 

[AUTOMAN]

You thought correctly.

 

[Jim]

Maybe I'm a bit dim, but I don't see a problem?

Me either. Looks like the chain is inside the channel.
If you move the chain side to side, does it fall out of the channel?

 

[Paul Rolfe]

Me either. Looks like the chain is inside the channel.
If you move the chain side to side, does it fall out of the channel?

The chain is definitely to wide for the channel,I'll have to see what others are doing with the early xs.

 

[Jim]

The bloody pins are wider than the channel!
wrong chain or another POS from mikey's?

or both?

Of course they are. The side plates run inside the channel, not the pins.

 

[Jim]

The chain is definitely to wide for the channel,I'll have to see what others are doing with the early xs.

Not sure what you guys are expecting to see, but what you're looking at is perfectly normal. It's a guide, not a friggin' tunnel. The side plates fit inside the guide edges, the pins don't. If the pins were to sit down inside the guide, they'd act like a saw.... slowly chewing up the rubber.

 

[Its been a long time]

Not sure what you guys are expecting to see, but what you're looking at is perfectly normal. It's a guide, not a friggin' tunnel. The side plates fit inside the guide edges, the pins don't. If the pins were to sit down inside the guide, they'd act like a saw.... slowly chewing up the rubber.

^^^^^ This.

 

[Paul Rolfe]

^^^^^ This.

Ok Jim, so the pins will run along the two outer edges of the guide ,while the plates should just sit inside ? I'll have a closer look tomorrow.ive never seen one like this so please be patient.Ive got to be sure it's right or ill have a major problem.

 

[Jim]

Ok Jim, so the pins will run along the two outer edges of the guide ,while the plates should just sit inside ?

Yes, that's what I'm saying.

 

[Paul Rolfe]

Yes, that's what I'm saying.

 

[Paul Rolfe]

Are these guides ok to use ? Seems like most have a pretty dim view on them. Just seen your mod post looks brilliant.

 

[Jim]

Thanks!

The problem with the MikesXS guides we had back then was the holes. They were drilled and tapped off kilter. They weren't perpendicular to the mating surface. They'd work after a fashion, it's just my OCD wouldn't let me install them.

Since I did that mod, I've built up about 4 engines for other folk. They supplied the guides, so I don't know where they came from, but the problem was fixed on those guides. It's pretty easy to check your holes... and pretty obvious if they're drilled wrong.

 

[Paul Rolfe]

Thanks for the info Jim,i feel happier now i understand how the later guides work.I'll check the guide mounting holes today.