Cylinder scratches

Got questions? We got answers....
Post Reply
Tiretread13
Member
Posts: 13
Joined: 01:20 pm May 03 2021
Country: Usa

Cylinder scratches

Post by Tiretread13 »

Took off my cylinder for a kips maintenance and notice some scratches on the piston and and few towards the top of the cylinder too bike has good compression around 130 and runs fine just don’t want the rings to hook up on the scratches or damage it even more and suggestions would be great
Attachments
1CF77C06-4219-48D6-B2C2-4883338CCA33.jpeg
1CF77C06-4219-48D6-B2C2-4883338CCA33.jpeg (2.77 MiB) Viewed 1598 times
User avatar
Slick_Nick
Supporting Member
Posts: 1675
Joined: 10:06 pm Oct 22 2009
Country: Canada
Location: Calgary, Alberta
Contact:

Re: Cylinder scratches

Post by Slick_Nick »

Time for a replate
'00 KDX 220R
Tiretread13
Member
Posts: 13
Joined: 01:20 pm May 03 2021
Country: Usa

Re: Cylinder scratches

Post by Tiretread13 »

How much is it to get it replated , what places are there that do a good job
User avatar
SS109
KDXRider.net
KDXRider.net
Posts: 5783
Joined: 05:11 am Aug 23 2009
Country: USA
Location: Tucson, AZ, USA
Contact:

Re: Cylinder scratches

Post by SS109 »

Sadly, looks like it needs a replate to me as well. Can you feel them with your fingernail? If so, replate time. If not, I would clean the bore with a red scotchbrite pad and recheck how it feels. If you still can't feel them then you are good to go.

A standard replate should be around $220 through Millenium. While there just go ahead and buy the piston through them or send a new piston with it so that they will match it to the plating.

BTW, those scratches are from dirt getting in to the engine. Make sure your air filter is in good shape, properly oiled, changed/cleaned regularly, and that you're getting it seated good when reinstalling it.
Youtube Channel: WildAzzRacing
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
Tiretread13
Member
Posts: 13
Joined: 01:20 pm May 03 2021
Country: Usa

Re: Cylinder scratches

Post by Tiretread13 »

I have a wisico piston for my bike brand new if I send the cylinder and the piston how’s the process work with shipping and stuff
User avatar
TwistedRoot
Gold Member
Gold Member
Posts: 323
Joined: 02:56 pm Oct 08 2017
Country: United States
Location: Florida, US

Re: Cylinder scratches

Post by TwistedRoot »

Just a heads up. This time of year these shops are slammed with work. I have had a CR cylinder out for 5 weeks now and still waiting for it. The longer we get into winter the longer it will prob take so don't expect it back in less than a month!

I have used MIllenium and Powerseal USA and both do a great job. PS was a bit cheaper although they just raised their prices.
2002 KDX 200
2003 KDX 220
User avatar
TwistedRoot
Gold Member
Gold Member
Posts: 323
Joined: 02:56 pm Oct 08 2017
Country: United States
Location: Florida, US

Re: Cylinder scratches

Post by TwistedRoot »

Tiretread13 wrote: 11:34 am Nov 18 2021 I have a wisico piston for my bike brand new if I send the cylinder and the piston how’s the process work with shipping and stuff
You have to remove everything from the cylinder first. KIPS, studs, coolant plug. Some shops will do that stuff but they will charge. You pay for shipping both ways. They usually contact you for payment when its done.
2002 KDX 200
2003 KDX 220
Tiretread13
Member
Posts: 13
Joined: 01:20 pm May 03 2021
Country: Usa

Re: Cylinder scratches

Post by Tiretread13 »

Yea they said about 5 weeks but power seal said 2-3 so if I’m going to get it done I’ll probably just send it to them and it’s a little bit cheaper too , I’m surprised people send it away for that long and don’t ride in the winter
Post Reply