Time for rod & main bearings. A couple questions.
01-18-2008, 12:02 PM
#16
Race Director
I have had good sucess on my current 84 race motor using stock rings.
The car had 43k on the odo when I got it. I can only assume from the sorry state of the car that it was 143k (odo did work at the time). For that motor it had failed headgasket and severe coolant mixing so I needed to replace all bearings. I did not put new rings in the motor back then. I rebult it in Jan 2003 and have 60+ races and some 70 track days in it. The car still seems to make good power even with 140k+ rings.
On the other hand I have an 88 motor with also unknown miles. I ran it for a bit, but it seem soft compared to my 84 block. Even usign the exact same head. So that motor got new rings. I have not run yet as it is still waiting to be put in the car.
The car had 43k on the odo when I got it. I can only assume from the sorry state of the car that it was 143k (odo did work at the time). For that motor it had failed headgasket and severe coolant mixing so I needed to replace all bearings. I did not put new rings in the motor back then. I rebult it in Jan 2003 and have 60+ races and some 70 track days in it. The car still seems to make good power even with 140k+ rings.
On the other hand I have an 88 motor with also unknown miles. I ran it for a bit, but it seem soft compared to my 84 block. Even usign the exact same head. So that motor got new rings. I have not run yet as it is still waiting to be put in the car.
01-18-2008, 02:56 PM
#17
Three Wheelin'
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Location: San Francisco, CA Porsche: '92 968 Blk/Cashmere
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01-18-2008, 05:38 PM
#18
Herr Unmöglich
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Woot dual purpose thread! You guys have me thinking hard about this, and how deep I want to go. The motor is coming out no question... Would like to do a few things that will be way easier with it out of the car. Still don't know if I want to pull the top end and pistons or not... debating that still. Will likely depend on time.
As for the crossmember, I would love a 3 piece one but had read the negative posts regarding the Lindsey piece. I have a spare in the garage and would love to have it modded - IF the final product was rigid enough to be used in a racing car.
As for the crossmember, I would love a 3 piece one but had read the negative posts regarding the Lindsey piece. I have a spare in the garage and would love to have it modded - IF the final product was rigid enough to be used in a racing car.
01-18-2008, 06:28 PM
#20
Not Special
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01-18-2008, 06:32 PM
#21
Herr Unmöglich
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Way too many projects. The NA stays to spec 944 / SCCA ITS specs.
The turbo is my money hole and is going to VR Stage 2+.
The Boxster was for the little lady but I am quickly growing fond of it.
Next up - finally a 911. Or a 356. Who knows.
The turbo is my money hole and is going to VR Stage 2+.
The Boxster was for the little lady but I am quickly growing fond of it.
Next up - finally a 911. Or a 356. Who knows.
01-18-2008, 11:28 PM
#22
Three Wheelin'
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I'm not a engineer (well..I am sort of but in financial engineering), so someone with more mechanical engineering experience would have to take the lead on the design if evaluating rigidity was involved. The weldor does have access to engineers, but that adds to the cost.
What would you consider rigid enough to be used in a race car?
