Timnman

Hey guys, so I just found the time to take into the engine and I found that cylinder 3 has almost no compression at all. All other cylinders got to 150-160psi. So I took off the head and I noticed that the head was lighter in color in cylinder 3 and the rings were fried. I'm gonna be changing the piston rings but I wanted to know if there is any way to check to see if the valves are bent? Or leak?

nismopowerdqg

take it to machine shop. You could of leak down tested it to see if you had leaky valves. But now that the heads off thats out the question. What mods and mileage are you at?

nismopowerdqg

also, hope your not just putting in new rings and letting it fly. id say whole block would need a once over from the machine shop to make sure your cylinder walls are still in spec and at the very very least you will have to re hone the cylinder wall.

Timnman

I have opal injectors, zzp dp, zzp charge pipes and zzp tune. Also gsm1 sensors. I'm at 47,000 miles. I was gonna hone the walls as soon I got the Pistons out. I had a machine shop look at the walls and he said they looked fine. I heard people check leaky vavles by pouring wd40 in the valves from the side and checking it that way.

nismopowerdqg

i would still take it to a machine shop. All tuners recommend upgraded valve springs in these motors. might as well do that and a set of stainless valves. its cheaper than you think and good insurance. And get rid of that zzp tune and get a dyno tune

blueLNFftw

iTrader: (16)

And dont go back to the machine shop that just told you the walls look good and didnt hone them...

Timnman

So, any recommendations on where to get stainless valves and springs at a lower dollar value? Also I'm deff not going back to that machine shop because I just heard from his other client tell me that his engine seized on him. So I'm gonna take it to another place.

exninja

iTrader: (1)

You can see if mongorat has some.

I have a full head available. 72k miles.

Timnman

How much you want for the head? Also is it built? If so what mods and at what mileage were the mods put in?

exninja

iTrader: (1)

PM'd