Upper oil pan or rear main seal leak? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ryoryo · 02-02-2020, 02:47 PM

I need help figuring out if my oil leak is coming from my upper oil pan or rear main seal on my 88 Silvia with an Sr20 swap. I would hate to do one and it is the other, but I will get it done either way. But doing the right one first would save me some time. The leak forms between the bell housing and engine where I have the pointer pointing out. Oil starts bubbling out about a 1/4 way up the transmission and drips out the weep hole on the very bottom of the transmission. It's not the head gasket or valve cover gasket. Changed those already. Any help is appreciated.

https://flic.kr/p/2iojsak

S14rebuild · 02-03-2020, 04:45 AM

Change ur rear main.

*s13 @ fullboost* · 02-05-2020, 06:09 PM

To be totally honest I would recommend you change both. In your photo the whole bottom of your motor & sub frame is drenched. Telling me you have leaks further up towards the front of the car.

codyace · 02-06-2020, 08:36 AM

Word to the wise, resealing an upper oil pan in car is a PITA, And I think you ultimately spend less time just yanking the engine up and out to do it, than you will supporting the engine, and dropping the subframe enough to squeak it out/enough to clean the surfaces well.

Just my two cents.

Also remember than if you do yank the engine, and roll the engine upside down, you'll need to re-bleed your lifters because they can suck air. Try to keep it up right on the stand

ryoryo · 02-17-2020, 09:04 AM

Quote:

Originally Posted by s13 @ fullboost

To be totally honest I would recommend you change both. In your photo the whole bottom of your motor & sub frame is drenched. Telling me you have leaks further up towards the front of the car.

Yeah you're probably right.

ryoryo · 02-17-2020, 09:14 AM

Quote:

Originally Posted by codyace

Word to the wise, resealing an upper oil pan in car is a PITA, And I think you ultimately spend less time just yanking the engine up and out to do it, than you will supporting the engine, and dropping the subframe enough to squeak it out/enough to clean the surfaces well.

Just my two cents.

Also remember than if you do yank the engine, and roll the engine upside down, you'll need to re-bleed your lifters because they can suck air. Try to keep it up right on the stand

I'm having trouble taking the trans out. I think i saw a post you commented on about twisting the transmission 180 degrees to take it out. I might give that a try.

P.S. I received my codyace AC brackets not too long ago. Nice looking craftsmanship.

jedi03 · 02-18-2020, 02:11 PM

is it not separating? get flathead or strong putty knife to get in there...should be able to slide straight out, one of many reasons I miss my sr lol

ryoryo · 02-18-2020, 02:19 PM

Quote:

Originally Posted by jedi03

is it not separating? get flathead or strong putty knife to get in there...should be able to slide straight out, one of many reasons I miss my sr lol

Its separating, I currently have it separated roughly 3 inches, but the problem with the s13 chassis is it hits the firewall and wont allow it to come off. I lowered the subframe slightly and still no luck. Next thing I'm gonna do is loosen the motor mounts (they're brand new) and jack up engine from the front and supposedly it will miss the firewall. My mkiv supra was so much easier taking the transmission out.

S14rebuild · 02-18-2020, 02:31 PM

Mk4 supra to a 240? What horriable thing happened in ur life?

ryoryo · 02-18-2020, 02:50 PM

Quote:

Originally Posted by S14rebuild

Mk4 supra to a 240? What horriable thing happened in ur life?

This comment is great. Lol. I got my mkiv supra back in 2012 when Supras weren't going for stupid prices (pre Fast and the Furious 7). Parts are extremely expensive on Supras so every time something broke it really hurt me. Sooo I sold it on ebay. Bought my imported 88 silvia (NOT a 240. Get it right. Lol) with only 45k miles on it, got my wife a celica and also got my parents truck and paid off some debt. Haven't looked back since.

S14rebuild · 02-18-2020, 03:17 PM

Quote:

Originally Posted by ryoryo

This comment is great. Lol. I got my mkiv supra back in 2012 when Supras weren't going for stupid prices (pre Fast and the Furious 7). Parts are extremely expensive on Supras so every time something broke it really hurt me. Sooo I sold it on ebay. Bought my imported 88 silvia (NOT a 240. Get it right. Lol) with only 45k miles on it, got my wife a celica and also got my parents truck and paid off some debt. Haven't looked back since.

Lol gotcha! Well looks like it was the right decision!enjoy the silvia

jedi03 · 02-19-2020, 09:57 AM

o ya just push the front of the motor up...use wood w/floor jack or buddy to lift or similar lol, and that will get you the angle! shows how long its been since ive been under it lol!

02-02-2020, 02:47 PM	#1
ryoryo Join Date: Jun 2017 Location: San antonio Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Upper oil pan or rear main seal leak? I need help figuring out if my oil leak is coming from my upper oil pan or rear main seal on my 88 Silvia with an Sr20 swap. I would hate to do one and it is the other, but I will get it done either way. But doing the right one first would save me some time. The leak forms between the bell housing and engine where I have the pointer pointing out. Oil starts bubbling out about a 1/4 way up the transmission and drips out the weep hole on the very bottom of the transmission. It's not the head gasket or valve cover gasket. Changed those already. Any help is appreciated. https://flic.kr/p/2iojsak

02-05-2020, 06:09 PM	#3
s13 @ fullboost Spirit Of Ecstasy Join Date: Dec 2007 Location: Simi Valley, CA Posts: 2,531 Trader Rating: (15) Feedback Score: 15 reviews	To be totally honest I would recommend you change both. In your photo the whole bottom of your motor & sub frame is drenched. Telling me you have leaks further up towards the front of the car. __________________

02-06-2020, 08:36 AM	#4
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Word to the wise, resealing an upper oil pan in car is a PITA, And I think you ultimately spend less time just yanking the engine up and out to do it, than you will supporting the engine, and dropping the subframe enough to squeak it out/enough to clean the surfaces well. Just my two cents. Also remember than if you do yank the engine, and roll the engine upside down, you'll need to re-bleed your lifters because they can suck air. Try to keep it up right on the stand __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

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02-03-2020, 04:45 AM	#2
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Change ur rear main.

02-18-2020, 02:11 PM	#7
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,786 Trader Rating: (8) Feedback Score: 8 reviews	is it not separating? get flathead or strong putty knife to get in there...should be able to slide straight out, one of many reasons I miss my sr lol

02-18-2020, 02:31 PM	#9
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Mk4 supra to a 240? What horriable thing happened in ur life?

02-19-2020, 09:57 AM	#12
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,786 Trader Rating: (8) Feedback Score: 8 reviews	o ya just push the front of the motor up...use wood w/floor jack or buddy to lift or similar lol, and that will get you the angle! shows how long its been since ive been under it lol!