Cheers Guys.

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Originally posted by surok

get the wisesports man. but 17x8 and 17x9 on an NA mr2 is just plain stupid.

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Surok; After spending that much time on getting the body good, there was no way I was going to get it rolling on the stock 14s still. It was either get some china spec 17x7 which would not fit and look crap or 17x8/9 which would look decent

Im pretty sure most/all the parts I am putting on this will be coming off when i find a nice turbo hard top (and have the funds to buy it)

what do you mean there is air coming out of the oil filler cap, its sealed??

I believe blow by is when theres traces of oil in your airfilter pipe/entry to turbo. Its caused from Oil coming through the valve cover, through the pcv pipe which ends up in the airfilter. Hence some people have a catch can so no oil is getting spat through the turbo. You shouldnt be getting much oil coming through anyways.

Sorry not sure why air is coming out from oil cap...

to give you an idea I emptied my catch can this week after a year and around 5k, there was about 750ml in there

MANALADY is right. The air coming out when you open the oil cap with the engine running, particularily if it "pumps" in time with the motor is usually a good indication that your rings aren't in the best of nick. A quick dry/wet compression test will confirm, or if you have access to one, a leak down test would be another idea.

When you do the compression test, as you take out each spark plug, check each one. If you find they have a black tar substance on them, your rings are cactus, if you have a white powder on the plugs (burnt oil) your rings aren't great, but not as bad as the previous condition.

looking good dude :)

quote:

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Originally posted by chase_d

rush posting before work lol.

The issue is when you open the oil cap - there is a lot of air coming out (I read that this is called blow-by - and normal on most older cars).

The amount of air that was coming out, I assumed this wasnt normal, and researched and said it could be things from a PCV valve/worn rings/blown head gasket.

Car is in no state to drive to get a compression test done (nor am I going start jumping to worst case scenario), so was testing all i could - a PCV valve....but having a good look at my motor - all it seems to have is just a nipple with a hose going to the intake...unless i am wrong and am overlooking something (Highly Possible)

As you can tell, I dont know much about motors - and even less about MR2's

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Many gen 2 3sge motors don't have a pcv valve.
Gen 3 3sge motors do.

My 90 model NA doesn't have one, only a hose running from the valve cover to the intake manifold, and I also have a bit of blowback if I remove the oil filler cap.
My motor has 223k kms and not using much oil. Recent comp test was very good.

I found this on Toymods car club forum, taking about gen 2 3sge blowby from the oil filler with the cap off:

“i've dealt with this more then a few times, i can say from experience these motors have a little blowby no matter what. They do not have a PCV valve, they do have a fixed orifice (pipe from head to throttle body).

The sump relieves pressure thru the oil return's from the head and out that fixed orifice pipe.

With a new set of rings the blowby is reduced but there is always pulsating pressure with this motor, if your not burning oil you shouldnt worry.”


Don't know how accurate it is, but if it's not I'm sure someone on here will tell us.