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Next Steps: Evo 8


Zx2guy19
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Hi all,

 

Picked up the Evo a few months ago and haven't had the best of luck so far. Here's a chain of events that led to the parking, and now potential teardown of this beast:

 

3 weeks ago I was beating the car pretty good (with Steve-O)- the dipstick blew out and I lost quite a bit of oil. Apparently it's a common problem, but I've since remedied with a Buschur dipstick spring.

 

Parked the car and did the following:

Battery Relocate

Catch Can/PCV Delete

Oil Change

 

Started the car yesterday and it was ROUGH...really struggling to stay running, heavy exhaust smell and ultimately, oil blowing out of the exhaust/burning.

 

I walked to the back of the car and found this:

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3592_zpslo6htcbc.jpg

 

 

Here are pictures of the catch can install- 99.9% sure everything is correct:

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3597_zpshfuj6pls.jpg

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3596_zpswgkmxpyh.jpg

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3599_zpsegvht8iy.jpg

 

Plugs:

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3598_zpsorhsfqz7.jpg

 

Gauge readings- oil pressure: 27 , vac: -15, A/f: bouncin between 13/15

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3601_zpsskf6mfsu.png

 

 

Videos of it running:

http://i6.photobucket.com/albums/y225/chopperman19/th_MOV_9987_zpseacjmviq.mp4

 

 

Revved it and built boost and this was the result:

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3600_zpsjktbdqck.jpg

 

 

The car is heavily modded, stroked to a 2.3L, Evo 9 turbo, etc.

 

Steve, myself and a few Evo friends tend to agree the turbo seals have given- does anyone disagree?

Also, for the Evo/4g63 folks, is there a turbo that will require no modification to my existing setup that is an upgrade for under $750? It's internal wastegate and I'm not wanting to do a full tear down, so as little modification as possible. Thoughts?

 

Thanks for the help!

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Its probably running so fucking rich you've washed the piston rings out of it. Make sure the right plugs are in it and that they are gapped correctly.

 

What are the AFR's at WOT and crusing? Idle should hold steady once the car is warmed up unless it has some huge cams in it.

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The turbo can be rebuilt for around $400 which is the likeliest option. But if I could spend $300-$400 more and get an upgrade without having to modify anything, I'd be game.

 

Grant- I didn't drive it for fear of fucking something up. Idle does stabilize after warming up but I'm trying not to let it run too long. The car does run very rich and I planned to get it tuned in a few weeks. Should I compression test before pulling turbo?

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Do a compression and leak down test before you go any further.

 

This.

 

If results come back good just wait to drive it until it is tuned.

 

As far as the turbo seals just pull off the charge pipe at the compressor housing outlet and check for oil there, that is a good start.

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I'm not sure how to do a leak down test...I do know how to do a compression test though.

 

I did pull the intake pipe, no oil and no turbo shaft play. The charge pipes did have oil in them though.

 

Good idea on pulling catch can lines...maybe there's a blockage...would that cause back pressure like that?

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I'm sure on of the line have to go to the intake.

 

Start here. It is CRUCIAL to have the excess crankcase pressure being draun from a turbo motor unless you have messive vents. If you removed your PCV, you have to run a line to the intake to keep things kosher. Trust me, it makes a huge difference. I just bought a Colt for dirt cheap beacue the owner thought the turbo or engine was bad due to smoke on decel. He just had his catch can hooked up wrong! :dumb:

http://www.dsmtuners.com/attachments/pcv_max_press_relief_e-png.135969/

 

 

You could have fixed that dipstick with a quick pintch on the tube BTW.

 

As for the issue of the black exhasut wetness, there is a 99.5% chance that is just black water. Your car is showing signed of running very rich. This will quickly coat the exhaust in black soot. On cold start up-the pipe will form condensation inside the pipe and it will look like that wne it exits the rear. Trust me-if oil was making it that far back you would smoke out the neighborood before you left there driveway.

 

As for the turbo being bad-there is not one sign of it pictured in this thread. Pull the intake, check for shaft play. Pull the outlet pipe and check for oil. If both of those checks look good-there is a 97% chance the turbo is not hurt.

 

Good luck!

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Thanks so much JP. This probably sounds dumb, but should I just run the line that's on the back of the VC to where I plugged my PCV nipple? If that's the case, I'll do that tonight, change the plugs and see how she runs. Then it's off to SlowMo so I quit fucking around.
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Came to post what JP did. The dipstick blowing out is not an issue itself, it's telling you there is another issue that needs fixed. springing it is only trying to mask the problem. FK your catch can setup. A few years ago on my 1G, I had a similar catch can and was blowing the dipstick out, oil all over, oil leaks from the pan and a few other places. I decided to go with a calan catch can, two -10an's from the VC to the can, then one -12an from the can to the intake pipe right before the manifold. Instantly stopped blowing the dipstick out and all my oil leaks went away.
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Thanks so much JP. This probably sounds dumb, but should I just run the line that's on the back of the VC to where I plugged my PCV nipple? If that's the case, I'll do that tonight, change the plugs and see how she runs. Then it's off to SlowMo so I quit fucking around.

 

IMO you still want a PVC ran to the intake manifold if possible. If you don't want to or that's not an option, I would add a line from the catch can to the intake of the turbo to keep the vacuum in the can as much as possible.

 

 

As RC mentioned-having this wrong will cause all sorts of issues!

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IMO you still want a PVC ran to the intake manifold if possible. If you don't want to or that's not an option, I would add a line from the catch can to the intake of the turbo to keep the vacuum in the can as much as possible.

 

 

As RC mentioned-having this wrong will cause all sorts of issues!

 

Sounds to me like tonight I'm going to move the line to the back of the VC to my intake pipe and reinstall the PCV system.

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Awaiting magical thread update tomorrow morning...

 

*fingurth crossthed*

 

You and me both brotha.

 

That would be best for now. :)

 

Steve-O is confusing the shit out of me- I have a 2 port catch can (I have another if needed but don't want to use it if I don't have to). Just to confirm, one final time since my fucking pea brain (or his, lol) is hesitant:

 

2 ports- 1 port goes to right side of VC (as it already is) and the other port goes to intake pipe, before filter. Reinstall the PCV system (luckily I kept it) and call it a day. It's that simple, right? Fuck.

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You and me both brotha.

 

 

2 ports- 1 port goes to right side of VC (as it already is) and the other port goes to intake pipe, before filter. Reinstall the PCV system (luckily I kept it) and call it a day. It's that simple, right? Fuck.

 

Yes.

 

If you want to improve venting under boost when the PVC is closed-you would simply add more vents/increase the line size from the VC to the Can, and increase the size of the line from the can to the intake

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Sounds like you have an excess of crankcase pressure and everyone else covered that. If its a stock 9 turbo and you want it rebuilt look up Christopher Robbins and his shop Turbos-R-Us on FB , a few friends have had nothing but good things to say about him. He can do a 20G upgrade on the stock turbo

https://www.facebook.com/groups/400701626731882/

 

And if you want to spend the next few days reading, here's some more info on crankcase pressure

 

http://www.evolutionm.net/forums/evo-engine-turbo-drivetrain/525004-anyone-has-crankcase-pressure-issues.html

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Edumacate yourself. http://www.jackstransmissions.com/pages/jacks-pcv

Good info there.

My system is a little simpler, but very similar.

Also look up paul volks setup. Mine is nearly identical to his.

 

Yup.

 

Like I said, the PCV works- and stock you have a line running to the intake, just no catch can in between. The only way to truly make it better-is to add more lines!

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Swapped everything around tonight-

 

1) Reinstalled the PCV hose to IM and back of VC

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3615_zpsbot6xv2b.jpg

2) Moved line from back of VC to pipe on intake

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3613_zpsjjcyz0sh.jpg

3) Inspected CC and CC lines to make sure no clogs

http://i6.photobucket.com/albums/y225/chopperman19/IMG_3614_zpsmp0vgzwg.jpg

 

Car won't start. Cranks, started for about 1 second and instantly died. Now it just cranks and cranks and cranks. What the fuck...one thing- the plugs are pretty beat up. I don't have any to swap tonight, but it ran yesterday (granted...pretty rough), and now it won't even start.

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