alright im about to give up here ive got way too much money in this thing and just cant get it right. im on my second piston, gasket set, and had to bore the cyl again, and replaced the cyl head ,there are two ports to check the oil pressure one on the oil filter cover and one next to it does anyone know the specs, i have guages and can make adapters

 

I don't know if this will help you or not, but my new service manual for my LT-4WD with a 250 engine (My GREEN book) has the following:

Above 30 kPa (0.30 kg/cm2, 4.3 psi)
Below 70kPa (0.70 kg/cm2, 10.0 psi)
at 3,000 r/min Oil temp @ 60 degrees C/ 140 degrees F

Hope this helps... if only to give you a starting point :-)
Jackie

 

Wow anywhere between 4-10 lbs at 3000 RPM? Thats low!

Thats what my 230s green book says as well. That is with the quad being run about 10-20 min at 2000 RPM depending on the ambient air temp. Shows it being measured off the filter cover.

 

What happen to the piston?

 

thanks for the specs i will look further into it , i talked to vince at vinces cycle and based on my first rebuild syptoms he thinks it could have been an oil delivery issue, thats why i was looking for specs ive already got it back to gether i just dont want it to grenade... again , my piston made a nice gouge on the cyl and my cam bearing was wiped out .head was wiped out. it seems to be ok now im just takin precautions

 

thanks again for the specs adirondackgal. i too have an lt4wd 250 its a 1990 so these specs will play double duty