My Comprssion Test Results!! There awesome!! lololol :)

[bjaccord]

Cyl. 1- 25
Cyl. 2- 75
Cyl. 3- 70
Cyl. 4- 60


So that means that cyl. 2,3 and 4 are ok because there withing 10-20% of each other right


L8r all, thought some of you would like to know (Or have a good laugh at) the results.

[bresk8r87]

Cyl. 1- 25
Cyl. 2- 75
Cyl. 3- 70
Cyl. 4- 60


So that means that cyl. 2,3 and 4 are ok because there withing 10-20% of each other right


L8r all, thought some of you would like to know the results.

wow... what happened? holy boost spike of death?

[bjaccord]

I don't think it was a boost spike, I've had a few, and the motor surprisingly took them very well. I had one spike (My vaccuum line fitting backed out of the wastegate somehow) and hit over 20 psi (My guage only goes to 20, so who really knows). I know my wastegate was open on this run, and I glanced over while in 3rd gear and it was at 9psi, so I'm don't think there was any kind of spike.

Before I did the test I figured ringlands for sure, but now I'm thinking the head may have lifted. The odds of wiping out all 4 pistons, or having the headgasket go in a bunch of different places is slim to none.

I ordered new head studs today (ARP) and will be taking the head off to see what it all looks like, and if that the case, and it can be fixed, I may be up and running within a few weeks.

Honestly though, I doubt I'd be that lucky.

L8r

[bresk8r87]

i was gonna say... you dont usually see that low of compression on all 4 cylinders like that... my only guess is the head as well... if that was the case wouldnt you have blown h/g symptoms in the crank case from coolant-oil contact? either way, hope it ends up being an easy fix man... dont you have that spare h23 you started cleaning sitting around by the way?

[bjaccord]

I couldn't find any oil/coolant mixture in either the pan or radiator, but I also shut the engine down very quickly, so it didn't have much time to mix.

And the spare h23 is my build motor, which has atleast two months left, if not more before completion. If mine truly is crap, then the car will simply be parked until Feb/March.

Either way, the arp headstuds will get used, so I figured I might as well order them up.

L8r

[straightedge]

Wow, I'd say uh...you've got low compression, haha!

[foamypirate]

Sure beats my 175 psi across all 4 cylinders after 237,000 miles

[Ilikebigbutts]

man resurfarce the head get a new hg and some arp's and slap that bitch back on.you might just get lucky.

ILBB

[bjaccord]

The stock head won't be going back on......







L8r

[bresk8r87]

called it

[straightedge]

What'd you wipe out?

[bjaccord]

This is a spare head that I've been working on for a while. I'm actualy going out right now to work on my car. I may get the head off today, not sure yet.
I'll try and post up tonight if find anything. L8r

[bjaccord]

Well....


Cyl. 1-Melted
Cyl. 2-Not sure, cracked ringlands?
Cyl. 3-Not sure, cracked ringlands?
Cyl. 4-Melted
Headgasket-Just fine

Cyl. 1 is pretty bad, and 4 is barely noticeable.

My guess is that when cylinder 2 and 3 were compressed from both sides the ringlands cracked.

Let the parts ordering commence.

I forgot my camera so no pics, but its nothing great to look at, just some out of round pistons.

L8r all

[straightedge]

Catastrophic, that's pretty tight...

[MRX]

i hope it wasn't that torque curve...i was very weary of it when u showed me your dyno graph