Originally Posted by Ben
(Post 461225)
Something we've yet to address is health of the engine. We're assuming it's a compotent mill with decent compression and leak down, but has this been confirmed? I believe you wrote earlier that you double checked mechanical timing to be spot on. What about the damper/crank pulley assembly? Is it OEM 1994? That can make a *huge* difference if it's failing.
Health of the engine? I hope it's darn good! :) It's a new build but I suppose it wouldn't hurt to do a compression check. |
Originally Posted by Ben
(Post 461223)
(Hell Scott, you might want to look into upgrading your MSI to MSII, it's a much better system [faster, better accuracy, better resolution, more feature rich]).
This is something I considered doing over the winter downtime. |
I think you are drowning it the very fact that your power falls off with the water speaks volumes to that man turn the water down considerably to maybe 3 gph or so and go up from there and you should see better results.
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Originally Posted by thymer
(Post 461226)
The pulley is OEM 1994. When you say fail, how do you mean? I did confirm TDC with #1 cylinder and the mark on the pulley.
Health of the engine? I hope it's darn good! :) It's a new build but I suppose it wouldn't hurt to do a compression check. |
Originally Posted by spoolin2bars
(Post 461260)
if it's really new. i've seen cars go for a while before the rings fully seated. compression jumped waaaayyyy up afterwards. just a thought.
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You don't have to guess on the intercooler as a bottleneck. Just check the pressure drop across it at your 16psi level. If it is a restriction you will see it.
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Originally Posted by thymer
(Post 461226)
The pulley is OEM 1994. When you say fail, how do you mean? I did confirm TDC with #1 cylinder and the mark on the pulley.
Health of the engine? I hope it's darn good! :) It's a new build but I suppose it wouldn't hurt to do a compression check.
Originally Posted by Braineack
(Post 461227)
This is something I considered doing over the winter downtime.
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compression
FUK
Did the compression check, wasn't sure if the engine was supposed to be cold or hot, did it cold. numbers are bizzare: cyl dry oil 1 172 300+++ (pegged the gage, bizzare) 2 110 150 3 140 152 4 170 190 WTF????? |
do that shit again when it's warm.
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Originally Posted by Braineack
(Post 461412)
do that shit again when it's warm.
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Well I guess I'm fucked. #2 and #3 look to be very low. I only did the wet test on two and it went from 120 to 230. Too depressed to do the rest. This is a new build too, probably less than 1000 miles on it. Can I assume the rings were not installed correctly?
COLD cyl dry oil 1 172 300+++ (pegged the gage, bizzare) 2 110 150 3 140 152 4 170 190 WARM cyl dry oil 1 182 2 130 230 3 160 4 180 |
Originally Posted by thymer
(Post 461430)
Well I guess I'm fucked. #2 and #3 look to be very low. I only did the wet test on two and it went from 120 to 230. Too depressed to do the rest. This is a new build too, probably less than 1000 miles on it. Can I assume the rings were not installed correctly?
COLD cyl dry oil 1 172 300+++ (pegged the gage, bizzare) 2 110 150 3 140 152 4 170 190 WARM cyl dry oil 1 182 2 130 230 3 160 4 180 You should first check the head gasket (obviously) before tearing down the motor. You might get lucky. One final note. Correct me it I am wrong, but you should remove all spark plugs, and take a compression reading after about three engine revolutions. Good luck man. |
After thinking about it a minute, I see that #2 and #3 is low. That is a pretty good clue that it is in fact a head gasket. Gases are probably flowing between the two cylinders.
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um dude was your throttle open while cranking? The middle 2 numbers are pretty low yeah
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Originally Posted by magnamx-5
(Post 461558)
um dude was your throttle open while cranking? The middle 2 numbers are pretty low yeah
I can handle it if it's just a valve issue, good excuse to get a 99 head I suppose. Any thoughts out there? |
Did you build it? that changes everything if so.
But if someone else assembled it. Will they stand behind there work? |
Originally Posted by Toddcod
(Post 461637)
Did you build it? that changes everything if so.
But if someone else assembled it. Will they stand behind there work? |
It tests the leak down else it gets the hose again.
Seriously, needs to be leak down tested to see where pressure goes. You should be able to hear the air escaping and make a judgment before taking ratchets to the engine. |
ima thinking its the rings or pistons given the results with oil. I hope i am wrong and its just something dirty and not sealing right.
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yeah, probably didn't seat the rings good or something lame.
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