Help me determine what i have on my 250r

[thegreenone]

I just bought a 87, 250r with no spark for 600 bucks, i have to questions.
1. i did a compression test and it was 120-125, is this good or is wore out.
2. THe jug says ftz racing not really to familar with this company could any one please tell me waht i have here

[trx250rider]

for the no spark question, its probably in your ingnition system..you can pick the whole thing up cheap on ebay or even through this forum..120 psi is on the low side...probably time for new rings...fixing the top end is also cheap...your cylinder was probably ported by ftz..they usually put their name on their work..you would have to open the topend up to see what kind of porting.

[thegreenone]

i checked the stator and it was not giving me any reading on the volt meter. and i did figure out that it has a ftz stator on it, i odered a new one but it has come in yet, the guy i bought i from said something about a stroker kit, is there any way tell

[atvmxr]

spacer plate between cylinder and cases? how thick is it?

[thegreenone]

1/2 to 3/8 in spacer.

[atvmxr]

need to know exactly how thick it is to tell you for sure... I believe 3/16" is the thickness of the spacer for the long-rod+86 piston setup, so Id say you have a stroker

[thegreenone]

hard to messure but 3/16 to 1/4

[86 Quad R]

not sure which generation piston that ftz uses or if they even use a OEM trx style piston. hell, they may even use a cr style for that matter.

if it is a long rod setup (with no added stroke) using a 85/86 style piston it will have roughly a 5mm spacer and if its a stroker(say a 4mm) it could have a spacer thats 7mm thick and if its simply a long rod stroker(say a 4mm) with a long rod piston then it could have only a 2mm spacer. hope this helps a bit. :cool:

[Aceman]

Originally posted by 86 Quad R
if it is a long rod setup (with no added stroke) using a 85/86 style piston it will have roughly a 5mm spacer and if its a stroker(say a 4mm) it could have a spacer thats 7mm thick and if its simply a long rod stroker(say a 4mm) with a long rod piston then it could have only a 2mm spacer. hope this helps a bit. :cool:

Helps? Now even I'm confused!:p

Plus he's measuring in US units while spacer plates are measured in metric......

[thegreenone]

see i should have know metric, but iam a carpenter so it kind of a habit