Rear Main Seal ?

[90MarkVII]

Check to make certain the rear gasket of the lower intake is not leaking. It also will run down and make you think it is the rear main.

[danielhv]

Back side of valve cover gaskets too.

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[danielhv]

Do you have anything to back that up or is that just internet hearsay?

http://www.dfwmustangs.net/forums/archive/index.php/t-10364.html

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[Lone Sailor]

http://www.dfwmustangs.net/forums/ar...p/t-10364.html



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Internet hearsay. Figured so.

[greenbullitt]

Do you have anything to back that up or is that just internet hearsay?

it is very true, I wouldn't do it on a street car of that fashion

[HECDOGGIE]

Check to make certain the rear gasket of the lower intake is not leaking. It also will run down and make you think it is the rear main.

Ah..... more good info.. I replaced this and the seal...

I do know that the block showed a little wear in this area, didnt use RTV , only a new gasket.

[danielhv]

Internet hearsay. Figured so.

It's experiences from those that have done the mod. Do you have any references that show there will be no ill effects whatsoever for his application or are you just trolling?

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[Lone Sailor]

Rear Main Seal ?

It's experiences from those that have done the mod. Do you have any references that show there will be no ill effects whatsoever for his application or are you just trolling?

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I've personally run a lot of aluminum driveshafts and aluminum flywheels on stock, and mostly stock, 5.0's. Never seen any noticeable losses. My main reason for asking was to see if someone actually had some facts to back up the claim of loss of torque by using the aluminum flywheel and/or driveshaft or if it was just from hearsay that was read on the Internet somewhere. I was hoping someone was going to post some dyno results on a before and after.

[danielhv]

I've personally run a lot of aluminum driveshafts and aluminum flywheels on stock, and mostly stock, 5.0's. Never seen any noticeable losses. My main reason for asking was to see if someone actually had some facts to back up the claim of loss of torque by using the aluminum flywheel and/or driveshaft or if it was just from hearsay that was read on the Internet somewhere. I was hoping someone was going to post some dyno results on a before and after.

It only makes sense.... You are reducing the weight of a rotating mass that relies on its inertia to drive the car. Lighter weight means less inertia, means more RPM's required to do the same amount of work.

As far as someone doing a before and after dyno, it would be interesting to see, but a lot of trouble too! Unless you had free use of the dyno of course.

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[Swamp Donkey]

Do you have anything to back that up or is that just internet hearsay?

I'd call it physics.

To the OP, I would go with a billet steel if budget allows.

[Baron Von Crowder]

Check PCV, if you are building crank case pressure it will create leaks. Also may be an indication that you have a bit of blowby.

[HECDOGGIE]

Check PCV, if you are building crank case pressure it will create leaks. Also may be an indication that you have a bit of blowby.

UPDATE:

I jacked the car up last night. Found the Oil pressure sensor, its gone, its not plugged, it appears to be broke off ( no sign of leaks anywhere around the sensor) . Looked behind the Lower intake. NO signs of oil.

Dont know what the PCV is...

Oil appears to be coming from the rear main seal.

Gotta save money to buy a clutch and seal now .

[talisman]

PCV valve should have a hose connected to it on the very back of the intake. Looks like this with the vacuum hose off:

[HECDOGGIE]

PCV valve should have a hose connected to it on the very back of the intake. Looks like this with the vacuum hose off:

I hope this is what it is... Oil spots are not concentrated in one area , they are from the middle of the engine, back to the middle of the tranny.


Thanks for the play by play !

[Fry86]

There is no oil pressure sensor? That's the leak. That sounds like what you said at least

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