I'm like a few parts away from having a complete turbo kit for my Sunfire. I was told to do a compression test because of the age and mileage on my engine, so I did. Shops wanted like $50 to do it, and the tool is only $25. So I bought the tool. Here are the results...
Cylinders from left to right:
#1 = 210psi
#2 = 209psi
#3 = 209psi
#4 = 210psi
Apart from a few external problems (alternator, coils, etc), the engine has been running perfect ever since I've had it. During the 4 years I've had it, I've changed some ignition stuff, the alternator, starter, and oil, but that's it.
What should I expect out of this engine (with the miles it has on it) running a max of 8psi? Will I be the first car with this many miles being boosted?
I'm turbo'ing it regardless since I've already bought the turbo components. I have another vehicular to drive if I blow the engine.
Hope it holds up. Let me know what you guys think.
High mileage on an otherwise well maintained engine shouldint be much of a problem. your compression test results are closer then most so your good there. i think it should be fine
keep us posted and lets see some pics! what are the details of the setup your putting together?
99 Turbo Sunfire GT | Ram 2500 | International Rollback | Mr Hanky the Suburban
im doing the same thing only my 2.4 has 147,000, like you said if I blow it I will still have another car to drive. good luck
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firebug: Dude your sig looks SO much like a pic I have of my car somewhere. I'll look for it. The only thing that looks different is the hood. Same lighting and everything.
as long as you keep up maintenance, have a good tune, and be good to your motor, it will be good to you. technically, every time you hit boost you are adding more wear to your motor. but that's part of the gamble we call boost. i say you'll be just fine bro.
I was a retard, and now I'm permanently banned.
firebug, here's that old sig I was talking about:
Similar, but not as close as I thought.
your compression test #'s look really good
the BIGGEST thing you have to worry about is fuel , make sure you have a wide band o2 set up , and keep the boost low untill you get the fuel set and go up slowly and keep the air fuel in the 12 range
Well that doesn't happen everyday! Lol!
Anyway, some updates... My turbo came today and my intercooler will be here Friday. JRC took a month to send me my 6" FMIC. He said something about family problems. I don't know if he was BS'ing or he really did. He's a reputable guy, nonetheless, so I'm not worried. But I finally received tracking information for it and it'll be here Friday.
Welding charge pipes this weekend.
Fun!
Keep in mind compression isn't everything. That just tells you there isn't a hole in your piston, valves are closing fine, and the rings are holding up. If I were you, I'd possibly inspect the oil pump/balance shaft assembly. Reason being, the #1 killer of the LD9 is a thrown rod bearing. Why? Most cases because of oil loss. If that pump isn't running perfect, you're going to find out real fast what it's like to punch a hole through your block. The damage wouldn't be directly caused by boost. The main cause would be because you're having so much fun with boost and you're winding the motor into high rpms constantly. High rpms = bad oil pressure on the 2.4.
<a href="http://www.j-body.org/members/mrpute"><img src="http://www.j-bom.com/images/sigs/putesig.jpg">
