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buck naked-r
11-01-2006, 06:23 AM
im doing a rebuild on this bike because of a bad shift drum....and found the piston looking like this...does anyone know what would cause the piston to look like this?
buck naked-r
11-01-2006, 06:25 AM
Originally posted by buck naked-r
im doing a rebuild on this bike because of a bad shift drum....and found the piston looking like this...does anyone know what would cause the piston to look like this?
buck naked-r
11-01-2006, 06:27 AM
Originally posted by buck naked-r
for those that stomp down on your gear shifter to get it in neutral.......this is what could happen.
buck naked-r
11-01-2006, 06:31 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:32 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:34 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:35 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:36 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:38 AM
Originally posted by buck naked-r

the clean up
buck naked-r
11-01-2006, 06:39 AM
Originally posted by buck naked-r
buck naked-r
11-01-2006, 06:44 AM
new bottom-end........waiting on top-end to get bored
buck naked-r
11-01-2006, 06:47 AM
Originally posted by buck naked-r
new bottom-end........waiting on top-end to get bored
buck naked-r
11-01-2006, 06:48 AM
Originally posted by buck naked-r
bradley300
11-01-2006, 08:50 AM
lokin good

i would asume with all the vertical scratch marks all around the piston and cylinder, that it just got too hot
Toadz400
11-01-2006, 12:54 PM
Originally posted by bradley300
lokin good

i would asume with all the vertical scratch marks all around the piston and cylinder, that it just got too hot

Looked like not enough lubrication to me. I would get an oil injection block off kit and run mixed gas.
bradley300
11-02-2006, 06:43 AM
i didnt think of that, but if that quad has an oil injector, its probably the culprit. i would block it off
chris29
11-02-2006, 08:48 AM
Yes get a block off plate kit for your blaster. I stated out racing blasters and thats one thing I did to mine. The oil injection can be known for going out and ruining your engine. Its better to be safe than sorry.
buck naked-r
11-03-2006, 05:24 AM
got the cylinder back and new piston
buck naked-r
11-03-2006, 05:26 AM
Originally posted by buck naked-r
got the cylinder back and new piston
Toadz400
11-03-2006, 10:00 AM
Did you get that oil injector block off kit? Seriously, it's known to be a huge problem with the Blaster. If you don't want your new piston looking like your old one I'd definately spend the few bucks to pick one up and start mixing your gas.
buck naked-r
11-03-2006, 05:08 PM
it alive...................notice the type of filter setup this bike have.......i think this had something to do with that cylinder damage.

i told him to get an outterwear 4 it
speedfreaksguy
11-03-2006, 05:12 PM
Originally posted by buck naked-r
it alive...................notice the type of filter setup this bike have.......i think this had something to do with that cylinder damage.

i told him to get an outterwear 4 it


Tell him to get an airbox for it. lol
krt400ex
11-03-2006, 05:51 PM
Originally posted by buck naked-r


that is a sign of low compression due to a worn piston or bad rings. that is burned oil from blow by. ur top end was a bit overdue for a rebuild
stocktires
11-04-2006, 07:26 PM
Looks like heat to me, been there done that.
250exkid
11-05-2006, 09:03 AM
when ever you guys are rebuilding your engins and just have to replace the piston and rings dont forget to HONE out your cylinder its just like new then.