Jug modz

[Jbducati]

I work in an auto machine shop but we do small motorcycle and quad bore and honing. There's a blaster cylinder that's been sitting for about a year and I could buy it off my boss but it has a small piece of sleeve missing...is it worth it to re sleeve and then get a nice trail port job on it. My blaster now is over bored and the head is milled and is making 175 psi. I'm running a 300 main at 32:1. What do you guys think of everything.

Thanks,
John

 

[sicivicdude]

Picture of the sleeve.

Sleeves are expensive, usually less expensive than an ebay cylinder (but you would know FOR SURE what you've got with a sleeve'd cylinder)

175 PSI? That's borderline for pump gas and a 300 main sounds like a Mikuni jet which means you're running the stock carburetor. There are significant gains to be had by enlarging the carburetor bore (if you are running a stock carburetor)

 

[super noober]

if you did resleeve it you should do it with a big bore sleeve. that plus some porting will really be a diffenence you can feel. what would you pay for this cylinder? i got one off ebay before that needed a sleeve for .99 plus $10 shipping lol

 

[sicivicdude]

yeah, how much are we talking?

I say pictures because it's possible, depending on where the sleeve is missing at, you might be able to run it like that.

 

[Jbducati]

The second one is around the exhaust port. I could always go another .25mm over

 

[sicivicdude]

No need, that break in the sleeve between the transfers is terminal. A ring will slide out there and catch it.

I have one at the house that looks JUST like that one. Wanna sleeve it for me for cheap?

 

[Jbducati]

You got the sleeve?

--john--

 

[sicivicdude]

I could have one before a cat could lick it's a$$ <---my dad's old saying which apparently, is REALLY fast...

 

[Blaner]

I could have one before a cat could lick it's a$$ <---my dad's old saying which apparently, is REALLY fast...

hahaha good one, now what could cause a piece of sleeve to break off between the transfers??

 

[sicivicdude]

Thin sleeve in that area because of over bores and chances are the sleeve wasn't bored perfectly in the center anyway.

If the engine catches something and comes apart catastrophically, that area will be harmed.