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View Full Version : Since everyone seems to care so much. (long)


Feedman
10-08-2004, 01:51 PM
Wednesday: I bought a catch can b/c oil was starting to drip out my valve cover breather filter. I had learned that on boosted cars when there is no vacuum it won't pull the vapors out from the pcv system. So I bought a catch can and hooked it up....(maybe my problem) - more later. Went for a lap, everything seemed peachy.

Thursday: I was on my way to get my license photo taken and have my care inspected. I had went down to the end of Rosemar and was sitting @ the last light waiting to turn left onto Emerson. The light turned green, I turned right and hit about 3k on the tach with only 30% throttle and it puked and stuttered. Then I noticed alot of smoke coming out the back...and underneath the hood, I smiled b/c I just had it tuned. Figures. So I pulled into the Hardess there on the left and parked it. Turned it off, popped the hood and there was alot of oil everywhere. Even out my bov. I honestly didn't care @ the time and dropped the hood. Called an officer from the station and got a ride. I went ahead and left it set until later that night when it was towed home. (omnipresent Dave). Parked it in front of my house where it is now.

Friday-Tuesday: I went to Detroit with Jordan and a mutual friend Jamie. Great time, I still need to share my stories about that trip. Got home, ran around that evening with Jordan. We stopped @ his house, b/c he is moving into a new house btw. I was talking to his Dad about what happened and he said he could help me out. He had a car he was willing to part with. So I took him up on his offer. Perfect timing(thanks Jordan).

Wednesday: I had the car towed to my house, b/c it wasn't in running condition. Its a 94 Hyundai Elantra. 1.6L Dohc 5spd. After a new altenator belt, serpentine belt, air filter, along with a new oil filter and all the fluids, it started right up. Smokes a little when its first started but clears up after a few minutes. It still needs front brakes and some winter tires, but it will be great for my beater.

Thursday: Cleaned the car up, inside and out, it was very dirty. Looks like a nice car actually. The front and rear bumpers are a little broken to say the least, so I think I might try my hand @ fiber glassing and grab a can of spray paint to touch it up. The rear quarter panel has a spot of rust, so there is a chance for me to try some body work. The engine seems solid except for a slight oil leak, and the tranny shifts like butter, actually better than my Si....lol.

Friday: @ work now writing this, making some extra cash to fix the Si, b/c I don't want to dip into savings. I am in no hurry to fix it. I think I might let it set for some time anyway. Finish the work on the house before it gets cold and then work on the car as a winter project. I am kicking around a few ideas. Depending on the shape of the block. I will keep it and rebuild it with new pistons and rods. Or drop a b18c under it with my head and build that. All depends what I can come across. I would like to do the latter honestly, so if someone can find me a good B18c shortblock for $200 or less consider it sold.

What caused it you may ask? Thats a good question. I have a few answers. Pick what you think fits.

1.) Most obvious - Lack of tuning for 7 months caused my rings/ringlands to fail prematurly.

2.) Again, lack of tuning. As you all know I was running waaay rich to prevent detonation. During this it may have "washed" the cylinder walls with gas and prevented the rings from seating properly. Thus allowing blowby.

3.) User error, my catch can setup. I hooked up the catch can setup closed loop. I didn't realize @ the time but under boost the pcv system doesn't work. So by having it all connected, when I hit boost the crankcase pressure had no where to go, finding a weakspot perhaps in my headgasket or pistons.

4.) Last but not least, tuning, its not what you may think. Didn't we already cover this? No. B/c of my exhaust leak, Steve @ Colletti Motorsports was unable to get me @ the standard 12.1 a/f. He stated b/c of my exhuast leak the wideband was unable to get an accurate reading so he was forced to do the best he could. He said it was sucking in extra air, casuing the wideband to show more lean than it actually was. He tuned it @ 14.1 across the board. What if it wasn't effecting the wideband as he thought and it really was tuned @ 14.1? This would explain the extra power I was getting and would also explain why my car is in the shape its in.


But only time will tell. It will be a few weeks until I have time to pull it in the garage and tear the head off to see what the problem is. I am confident I can tackle this myself. I am sure from time to time I will asking for help, all beit info or an extra hand. I have never rebuilt an engine, so first time for everything. I am hoping when its all down I will be putting 250-300whp down tuned of course. This time it will be down right. Right down to having my front bumper painted and the wheels aligned. No screw left unturned.... 8)

xjoewhitex
10-08-2004, 02:07 PM
very well explained adam.. I hope no offence was taken in me asking, i was just curious 8)

Jay
10-08-2004, 02:09 PM
hrm.. could be the pressure having nowhere to go. When we rebuilt the motor in my truck I put a high volume pump in it, got edelbrock polished valve covers, an neither one of them had a breather in them.. didnt really think bout it at the time. For a week strait it kept leakin at the valve covers. It'd literally blow part of the seal out from under the cover itself. I put a push in breather an 86' the caps on both valve covers an had no problems since.

Davis Silver Sti
10-08-2004, 02:09 PM
Sorry to hear about your car.
Well, and you've probably already heard this.....at least you can learn from this experience and it seems like you probably already know why it happened so you are on the right track.

Sounds like you have some solid plans on building a really fun engine. (smart move on getting a beater car..) Let us know what you find about your engine.

Take it easy and have a good weekend.

RobbieNelson
10-08-2004, 02:10 PM
[3.) User error, my catch can setup. I hooked up the catch can setup closed loop. I didn't realize @ the time but under boost the pcv system doesn't work. So by having it all connected, when I hit boost the crankcase pressure had no where to go, finding a weakspot perhaps in my headgasket or pistons.

Uh... no. It would have vented out through the breather/vent hose to where ever in the intake you piped it. Where did you pipe the "out" from the catch-can?

http://www.movfast.com/forums/viewtopic.php?t=4

daveb91
10-08-2004, 02:18 PM
Hopefully you guys are not taking your car Adam because I could have sworn I saw it being towed from Rt2 hardees last night. Have a safe trip.

Oh oh..hope not. Adam you still here, your car ok?


Nope...everything's fine.

Jordan and I are pimpin it in Detroit, Mi. Having a good time and staying out a trouble.\

See everyone soon. 8)

im not the smartest guy in the world but after reading this post and the other one you can see why i am confused. :?

Feedman
10-08-2004, 02:18 PM
[3.) User error, my catch can setup. I hooked up the catch can setup closed loop. I didn't realize @ the time but under boost the pcv system doesn't work. So by having it all connected, when I hit boost the crankcase pressure had no where to go, finding a weakspot perhaps in my headgasket or pistons.

Uh... no. It would have vented out through the breather/vent hose to where ever in the intake you piped it. Where did you pipe the "out" from the catch-can?

http://www.movfast.com/forums/viewtopic.php?t=4

This is kinda confusing....

Ok, here we go.

The catch can has an IN and and OUT. The IN was connected to a TEE to the valve cover breather and the pcv out of the block into the catch can. The OUT on the can was then connected to the intake manifold.

I think what happened is that the pressure was created in the block, vented into the pcv and out the valve cover breather into the intake manifold where it was then shoved back into the block. Under boost this is magnified 10 fold and caused failure @ the weakest link.... 8)

Feedman
10-08-2004, 02:20 PM
Hopefully you guys are not taking your car Adam because I could have sworn I saw it being towed from Rt2 hardees last night. Have a safe trip.

Oh oh..hope not. Adam you still here, your car ok?


Nope...everything's fine.

Jordan and I are pimpin it in Detroit, Mi. Having a good time and staying out a trouble.\

See everyone soon. 8)

im not the smartest guy in the world but after reading this post and the other one you can see why i am confused. :?

B/c I was in Detroit @ the time and I didn't want to get into a big discussion about it while I was gone....thats all... 8)

RobbieNelson
10-08-2004, 02:40 PM
[The catch can has an IN and and OUT. The IN was connected to a TEE to the valve cover breather and the pcv out of the block into the catch can. The OUT on the can was then connected to the intake manifold.

So when boosting you were presurizing your valve-cover with ?psi of boost? That's what would happen if you connected the OUT to the intake manifold.

Feedman
10-08-2004, 03:36 PM
[The catch can has an IN and and OUT. The IN was connected to a TEE to the valve cover breather and the pcv out of the block into the catch can. The OUT on the can was then connected to the intake manifold.

So when boosting you were presurizing your valve-cover with ?psi of boost? That's what would happen if you connected the OUT to the intake manifold.


in so many words yes.... 8)

Don juan futon
10-29-2004, 01:06 AM
I'm thinking the gasket failure.