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As you know I bought a car from someone here on the board. I was unsure of the condition of the motor so I took it to True Street on Saturday. When I got there, we noticed that the car was smoking a blue grey smoke out the exhaust.
I asked them to do a leakdown/compression test so that I would know what I should do next (sell blower, build motor, and run NA or keep blower, convert to Mass Air, and then tune).
The leakdown test showed that there was no leakdown so we decided to do a compression test to see if it was piston rings or something in the cylinder heads. We quickly saw that there was a problem in the heads as the compression was 180 in each cylinder. It appears that the valve stem seals, or seats, are allowing oil into the exhaust chamber; therefore causing the smoke problem.
So I am left with the decision on what to do next. I am definately keeping the blower, but I need to get the heads off the car and that issue resolved.
My question is:
1) Would you do a quick valve job, replace valve stem seals, and re-install the E7 heads
2) Find a set of nice aluminum heads and install them
The car is a daily driver and has cold A/C. I want to keep the power level between 400 - 430 and continue to enjoy it. There are numerous other things that need to be completed on this car (suspension, paint work, interior, and a few odds/ends) so money has to be well spent.
The car is not a Mass Air car so I will also incur that expense to convert it as well.
Please provide your thoughts/suggestions!
Thanks,
Robert
I asked them to do a leakdown/compression test so that I would know what I should do next (sell blower, build motor, and run NA or keep blower, convert to Mass Air, and then tune).
The leakdown test showed that there was no leakdown so we decided to do a compression test to see if it was piston rings or something in the cylinder heads. We quickly saw that there was a problem in the heads as the compression was 180 in each cylinder. It appears that the valve stem seals, or seats, are allowing oil into the exhaust chamber; therefore causing the smoke problem.
So I am left with the decision on what to do next. I am definately keeping the blower, but I need to get the heads off the car and that issue resolved.
My question is:
1) Would you do a quick valve job, replace valve stem seals, and re-install the E7 heads
2) Find a set of nice aluminum heads and install them
The car is a daily driver and has cold A/C. I want to keep the power level between 400 - 430 and continue to enjoy it. There are numerous other things that need to be completed on this car (suspension, paint work, interior, and a few odds/ends) so money has to be well spent.
The car is not a Mass Air car so I will also incur that expense to convert it as well.
Please provide your thoughts/suggestions!
Thanks,
Robert
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