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#1 |
Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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And It just started to burn alittle oil but I think thats ok for a new motor with new rings right
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#2 |
20psi boost
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
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It can also lose a little bit into the pcv. When I had my intake apart, all parts where coated with oil on the inside.
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#3 |
Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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Would oil in the Pcv be bad or ok
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#4 |
Bone Stock w Upgrades ;-)
Join Date: Apr 2010
Location: Tampa Bay
Posts: 213
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The preferred head torque specification is above the 58 ft/lb book value at 70 ft/lb. You'll need a torque wrench and a Allen socket attachment. Follow the torque pattern in the book. A compression check couldn't hurt. I would expect to see some oil in the intake after an overhaul but if it's excessive it could contaminate the airflow sensor on a turbo car. Never clean one with solvent otherwise you could ruin it, and they are expensive.
Last edited by Bru; 10-18-2010 at 03:27 PM. |
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#5 |
Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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It's a non turbo and I will do the head bolts and compression check
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#6 |
Bone Stock w Upgrades ;-)
Join Date: Apr 2010
Location: Tampa Bay
Posts: 213
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Another condition that can cause a ticking sound is "piston slap". That is when the skirt of the piston slaps against the cylinder bore when tolerances are exceeding specification. Either a worn piston or a too large a bore for the piston. Piston slap is usually worse on a cold engine then gets quieter on warmup especially with aluminum pistons which have a greater coefficient of expansion than the iron block. That's why we have head gasket problems on the Supra. The aluminum head scrubs the top of the head gasket more than the bottom on each heat/cool cycle. A stacked metal head gasket solves this problem or increased clamping force on a standard head gasket.
Try this test for Piston slap: When the engine is cold and ticking the loudest, wear a pair of rubber gloves and pull the spark plug wires one by one and replace them in the distributor. If the ticking sound changes you have piston slap (excessive tolerances). Also have a ground wire handy to put in the distributor terminal as you are pulling the spark plug wire out to ground the spark. It may run rough but listen to the sounds. Piston slap means your engine rebuilder wasn't following proper procedures. Last edited by Bru; 10-18-2010 at 11:51 PM. |
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#7 |
Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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The motor is all new but the cams and crank they measured every thing they had all most no wear on them the first owner keep up with the oil changes and it has winsco pistons 20 over and eagle h-beam rods and a metal head gasket and balanced everything the motor has about 1000 miles on it the tapping started about 300-400 miles after the build Nothing is worn out they torque to 58lbs and not 70lbs im think that the head bolt came looser and now the headgasket is slapping between the head and block and when it warms up everything is expending and making less slapping
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#8 |
Lexus & 550's
Join Date: May 2010
Location: Baltimore
Posts: 526
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Had the shop that build my motor look at it and they said it the piston making the the taping sound so now I have to pull the motor again and they r going to tear it down again. But I don't have to pay anything because it has a warranty
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