Well alright engine building guru's...



I don't need help rebuilding the engine. I need help with the oil pan. HOW THE HELL DO I STOP IT FROM LEAKING FROM THE MOTOR MOUNTS?!?!?!?!?! I've built 3 motors so far and ALL THREE of them leak at both motor mounts! The last engine I put in(one week old engine) I was super duper careful with the oil pan. I cleaned up the engine REAL nice and scrubbed and cleaned the oil pan for almost an hour. Then I applied an even coat of high temp sealant to the oil pan and tightened the bolts down, then let her sit overnight. Then I put the engine in and had a few minor oil leaks here and there(turbo return line and a small one on the front cover)...but all of them got fixed...EXCEPT FOR THE MOTOR MOUNTS!!!



I have absolutely NO luck with keeping the oil pan sealed....SO....What's the trick?

 

You need to shim the motor mounts against the oil pan.

Youcan use RTV on some fender washers and that should do the trick.

Also use RTV when putting the bolts in the motor mounts.

 

you gotta put a crap load of sealer on those pans. total you need to use almost the whole tube, the whole back part of the pan needs to be gooped and so does the motor mount to oil pan surface and put a bunch of goop on the motor mount bolts. and then you need to tighten everything and let it sit for at least 12 hours (24 is better) before it sees oil



mike

 

I used the whole can of RTV. What do you mean "shim the motor mounts"?

 

hmmm...I gooped the motor mount area with almost half the tube of RTV, but didn't put any on the motor mount bolts themselves.



So....you think I could pull the motor mount bolts out, RTV them and then re-install them?

 

hmmm...I gooped the motor mount area with almost half the tube of RTV, but didn't put any on the motor mount bolts themselves.



So....you think I could pull the motor mount bolts out, RTV them and then re-install them? [/quote]

that depends, do ya feel lucky?



i think you could do it, if you can get all the oil out of there, goop doesnt like oil when its wet



mike

 

brake clean is your friend. Pull the bolts and clean the holes. Goop them up and torque them down.



Mine is good so far but its only been 3 days

 

I put RTV on the threads, don't hold back. Is the problem the oil pan, is it the same one leaking everytime?

 

I had this same problem recently it turned out the rear plate had a slight crack in the threads, what i did to make do was pulled the mount off drained the pan and sprayed the crap out of it with brake cleaner and air until it was completely dry, I also don't know what RTV your using but over the years i've found Hondabond works really well, I put it on the threads in the plate around the edge of the pan where it meets the block, on the mount and on the head of the bolt so that all contact surfaces are covered, it worked. If you have access to the riht tools you could also o-ring the mounts, that works as well.



-sean

 

This is OT, but jspecracer7, I sent you a PM a few days ago.