burndown srx 600

[swede srx]

I tought that stock jetting was safe enough to make some test runs with my race logic ported and .010" shaved heads srx 600. Stupid me, I was wrong.
Ruined 2 new pistons, a cylinder and a head.

 

[daman]

Did you keep an eye on your plugs????? or did you just pin it and don't look back.

 

[swede srx]

plugs

I think the plugs looked fine, but with the heads of I think that the piston wash says lean.

 

[daman]

Yea looks lean,,that sucks man

 

[zapswe]

ouch!
my srx did that last year,ended up buying a used complete engine to have some spare parts,mine was stock but had a waterleak-looked exactly the same-detonation i guess.
btw-did the porting do some(any) difference?
oh-dont forget to check other things,like crankseals and such-doesnt have to be the jetting even though the wash sure looked lean...maybe it was something with the cooling system(air in system or leak)
hope you sort it out!

 

[zapswe]

well after reading your post the paranoia kicked in-just went out to check my wash and lo and behold-lean as hell,looks like ill have to check the crankseals myself,pto has started to melt near the exhaust....going to the mountains in a couple of weeks so i guess ill start wrenching...
oh-comp is strangely enough 128/125/128 go figure...