Sick Little Scoot -> How much cylinder scarring is too mu

twsnagel · Post by **twsnagel** » Mon Sep 19, 2005 10:29 am

I held the cylinder up to the light and there is some scarring on the wall below the exhaust port. I would guess that it's about half the depth of an "indentations" on the edge of a dime. There are probably 2 or 3 of them, each about 3/4 of an inch long.

Do you think that this means I need a new cylinder? I sure hope not! I don't want to dump a lot of money into this scooter.

Should I just put the gaskets and rings on and see if it works?

Tyler

Justinsane · Post by **Justinsane** » Mon Sep 19, 2005 10:41 am

geez i dont think those will really affect it... anyone else?

vette76 · Post by **vette76** » Mon Sep 19, 2005 3:16 pm

im sure it would work, but be low on power. u wont need a new cylinder i dont think, just a bore. but that means new piston+rings too.

twsnagel · Post by **twsnagel** » Mon Sep 19, 2005 3:34 pm

I think I'll go ahead with the ring job and gaskets and see what happens, before i dump money into having it bored and a new piston.

vette76 · Post by **vette76** » Mon Sep 19, 2005 3:41 pm

problem is. if u get it bored u will need oversized rings too.

twsnagel · Post by **twsnagel** » Mon Sep 19, 2005 4:24 pm

But rings are fairly cheap compared to the price of boring it out, right?

vette76 · Post by **vette76** » Mon Sep 19, 2005 4:42 pm

oversized rings-$25, piston-$35, bore-$40. not too bad. thats what i paid neway.

twsnagel · Post by **twsnagel** » Mon Sep 19, 2005 4:57 pm

Thanks, vette76!

I'm getting rings and all gaskets for $40 Canadian, about $35 american. I want to see if this thing works before I spend much more on it.

Tyler

burnt_toast · Post by **burnt_toast** » Mon Sep 19, 2005 11:19 pm

It wont work... sorry. Any scratches at all will seriously affect how a cylinder performs, it has to be super smooth at optimum. This is exactly how it went down b4 my 2nd rebuild. My scratches were too deep for even a bore.

You'll need a new (used) cylinder. you can try new piston and rings, but w/ out a bore u risk breaking them. Since you went ahead and bought the rings, don't destroy them by putting them back into that cylinder, get a diff one.

if scooter therapy has any, you can get one for $25 shipped, half the price of a bore for a working cylinder. Then figure in price of piston and rings, and hone job (real easy to do if you have the tools), and theres ur rebuild price. about $80 tops imo.

Post by **noiseguy** » Tue Sep 20, 2005 12:56 am

Take it to a shop to let them determine the condition of the bore; if they say run it then run it. We would really need to see it in person to diagnose it.

twsnagel · Post by **twsnagel** » Tue Sep 20, 2005 11:18 am

What kind of a "shop" should I look for? Under what heading in the Yellow Pages?

Thanks!

Tyler

burnt_toast · Post by **burnt_toast** » Tue Sep 20, 2005 1:32 pm

noiseguy wrote:Take it to a shop to let them determine the condition of the bore; if they say run it then run it. We would really need to see it in person to diagnose it.

yeh thats true. I could be wrong. But it didn't take long for me to scratch up my cylinder, just one downhill ride and it shutoff.

You can go to basically any type of motorcycle shop, doesn't have to be honda. Just bring your cylinder w/ u, go up to parts/service and just ask somebody there if they think the scratches are too deep or not.

Alternatively, if you have a good quality camera, you can try to take some pics and show us.

Post by **noiseguy** » Tue Sep 20, 2005 3:35 pm

Any motorcycle shop or "small engine repair" shop should be able to handle this. Make a couple of visits with jug in hand and get prices, they will vary.

twsnagel · Post by **twsnagel** » Tue Sep 20, 2005 4:41 pm

Bad news!

I took it to a shop, and they said that the scratches would rip the new ring to bits.

They want $80 canadian to bore and for a new piston.

But then, I guess the old size rings won't work, eh? So who do I get new rings from -- honda or some third party?

Someone said that scootertherapy has original cylinders for $25. I've emailed them for a quote.

vette76 · Post by **vette76** » Tue Sep 20, 2005 5:09 pm

with a bore u need an oversized piston. u should be able to get rings from the dealer/shop.