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Post by lynzoid on Oct 12, 2009 8:08:03 GMT -6
ok, i'm replacing my oil pan, oil pickup tube and oil manifold.
i will be hacking thru the exhaust crossover.
brain gave cpl of tips about using RTV sealer (instead??) of a gasket.
any input appreciated. currently waiting for parts.
thanks
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Post by oldsmobile99 on Oct 12, 2009 17:39:04 GMT -6
can you do a write up on it please ?
thanks
-josh
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Post by lynzoid on Oct 13, 2009 8:15:54 GMT -6
ok, there's some confusion over new design oil manifold vs old design. i have ordered: oil manifold 12581822. there's some info that it's new design (currently in production) and that it requires use of new oil baffle and new pickup tube (12586450 and 3546580) - they are cheap and i ordered them too. BUT i also have OLD design (original) new oil pickup tube. Jason (brain) - please clear it for me... how do i come about this ? I also now know for certain, that i will have to REMOVE the pan gasket and use gray RTV GM sealer instead. I do not have access to TSB's after 2000 and my FSM does NOT have ANY instructions on how to replace the manifold. Is it straightforward ? PLEASE HELP ! i will have parts in next few days and i have to get Rora on the road before i fly to London at the end of the month.... ADD: ok, at least now i have sequence of operations and torques.. it's 1. pan off,2. oil pickup off, 3. baffle off - nuts, 4. oil manifold off - here's lot's of  's; do i have to take out some of main bearing bolts ? is it safe ?, 5. new manifold on - 's here too - do i have to use sealer on it or just let it seat on it's integral gaskets ? |
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Post by lynzoid on Oct 14, 2009 10:16:14 GMT -6
For history:
YES, on 95's with original stuff under pan, while replacing Oil Manifold 12581822 it IS neccesary to use new oil pickup tube and new oil scraper/baffle (12586450 and 3546580).
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Post by lynzoid on Oct 19, 2009 10:32:23 GMT -6
ok, parts received.
New oil pan - check (90usd)
New oil manifold - check (90usd)
New pickup pipe - check (15usd)
New oil baffle - check (15usd)
150g tube of GM RTV sealant - check (10usd)
Going in tomorrow... Wish us luck guys and gals.
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Post by mattn on Oct 19, 2009 10:47:05 GMT -6
Good Luck, and I'd love to see pictures of the parts and the repair :-)
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Post by lynzoid on Oct 20, 2009 5:02:01 GMT -6
Job commenced 3hrs ago.
We're IN.
Damage to oil pickup tube - confirmed.
Taking some pics along the way with iphone - not best quality but something better than nothing.
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Post by lynzoid on Oct 20, 2009 9:54:50 GMT -6
6 hour job done. Car back in action. Pressure back to normal. No valvetrain clatter.
I am happiest russian alive.
Details to follow with pics.
Just for the record - oil pan job DOABLE WITHOUT DROPPING THE ENGINE AND SEPARATING FROM TRANNY.
I have witnessed it today. And it looks fine afterwards.
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Post by ntrenn on Oct 20, 2009 11:38:09 GMT -6
Lynzoid great going!!! Amazing what you can do when you have to....congrats on getting back on the road.
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Post by oneye on Oct 21, 2009 4:33:37 GMT -6
2x on the congrat.s Damage to the pickup tube??  |
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Post by lynzoid on Oct 21, 2009 7:03:11 GMT -6
yes, i had punctured pan. turned out i also had damaged stuff under it as a result. check 'replaced tensioner' thread.
still processing pics
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Post by golfagain on Oct 21, 2009 11:34:20 GMT -6
In your first post, you mentiond hacking through the crossover pipe. Did you replace it with a new one? If so, how much was it? It seems this is the way to go for oil pan and manifold replacement... a lot better than seperating the tranny and dropping the engine!!
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Post by lynzoid on Oct 21, 2009 12:11:59 GMT -6
The whole point of hacking thru pipe is to do oil pan with engine in a car. If you want to drop the engine and separate from tranny for this job - you'll have your crossover pipe intact.
The idea was to use most qualified metalworker/welder for this, and one i asked - excelled at this. We cut it, we did pan and all the stuff, then we welded the cut.
pics coming
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Post by mattn on Oct 22, 2009 13:35:55 GMT -6
Sounds like you had a good plan, and great execution. Good going. I am also curious to see the pictures.
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Post by lynzoid on Oct 23, 2009 7:32:02 GMT -6
ok, here goes  titles will be ON TOP of each picture magic location  this is the new oil pan  new oil baffle, p/n 12586450  new oil pickup, p/n 3546580  new oil manifold  old hastily welded oil pan - yes, it's ugly  here you can see the flange of crossover pipe we already cut at this point  moment of truth - pan going out  following 2 pics show damage to pickup tube; 1 - contact point gap with oil manifold 2 - receiver is bent   this is how it looks without a pan - oil manifold, also crankshaft visible  old oil manifold out. before it can go out there's old baffle underneath it held with 10 nuts.  new oil manifold getting RTV'ed  new oil manifold half screwed on the engine  new oil baffle on - this is indeed another design, it held by same 20 bolts as oil manifold - NOT them 10 nuts. discard the nuts  new oil pan getting RTV'ed after pulling out rubber gasket (discarded)  That's about it After we put the pan back on, crossover was welded back in carefully. Any questions welcome. |
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Post by lynzoid on Oct 23, 2009 7:59:48 GMT -6
to Mods - guys, stick it somewhere, as a proof, that IT CAN BE DONE ! many caddy guys will benefit too.
the technilogical process to cut then be able to weld is as follows:
get off the heat shield from the crossover by using pneumatic hammer, hammer the visible seams;
then you have to cut a rectangular 'window' in the exhaust pipe itself - this window will allow you to weld the pipe back afterwards on the inside, the weld this window back on;
then cut it carefully (trying not to damage the tranny pan).
this is a job for pro welder.
we used standart CO2 MIG welding.
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Post by aldrichd on Oct 24, 2009 20:39:38 GMT -6
Well done!
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Randy T.
Administrator 
☯ AURORA GXP ☯
Posts: 3,758
Staff Member
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Post by Randy T. on Oct 25, 2009 13:01:54 GMT -6
Nice job bro! I am so glad you got it fixed again.  I will get this stickied, it is on my long list of things to do. |
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Post by golfagain on Oct 28, 2009 11:25:32 GMT -6
Thanks so much for the photos... good Job.
'Im going to now do my 99 the same way.
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Post by cbburtraw on Oct 30, 2009 22:05:01 GMT -6
interesting stuff, thanks for posting pix!!!
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Post by lynzoid on Jan 9, 2010 13:14:06 GMT -6
guys, Randy, Scotty - please sticky this. Ppl cannot use search on this thread due to 3-letter words in a title.
cheers
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bobsblue95
Super Moderator 
Scars of pleasure, scars of pain. Atmospheric changes make you sensitive again.
Posts: 3,125
Staff Member
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Post by bobsblue95 on Jan 9, 2010 14:55:05 GMT -6
A shot of the welds, even after the fact, would be nice too, please!
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Post by nelson480 on Jun 1, 2011 20:23:23 GMT -6
Very good to see whats inside before i have a go.
Im gonna try without cutting the crossover, i believe it CAN be done
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Post by roara on Jun 1, 2011 23:10:33 GMT -6
Good luck nelson! Did you see the orange bead that was laid down? holy cow
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Post by nelson480 on Jun 2, 2011 15:09:24 GMT -6
The old Pan you saying? lol
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Post by talahasey on Apr 25, 2012 13:36:57 GMT -6
Think a guy could cut that cross over with a sawzall.?
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Post by sall on Apr 25, 2012 14:23:17 GMT -6
The worse the cut the harder it will be to weld back up. I personally would never go this route. Since you need to change the trans side cover too talahasey you might as well drop the subframe do everything at once.
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Post by brody2be on Sept 16, 2015 6:41:23 GMT -6
Can a second oil pan be fabricated to catch oil leak from getting on drive way and empty oil every oil change, possibly using oil catch sponge from muffler off a lawn mower engine? Just a suggestion!
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Post by rorafan on Sept 16, 2015 13:04:48 GMT -6
Can a second oil pan be fabricated to catch oil leak ... Someone here once suggested the 2nd oil pan method (more of a drip pan really) at one point - not sure what became of it. Apparently the military uses a similar idea for choppers. So hey, if it works for them... Personally I'd rather go with something called an 'oil sorbent pad' - basically a cloth-type material that soaks up oil but not water. Looks like a thick paper towel. The trick is getting it to stay where you want it. That plus the shame of knowing your car is essentially wearing a diaper!  |
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Post by sall on Sept 16, 2015 15:21:47 GMT -6
I have a metal break and a welder. Could incorporate it as a skid plate for oil pan too. Not sure I have the time or willingness to undertake the project though right now haha.
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's; do i have to take out some of main bearing bolts ? is it safe ?, 5. new manifold on - 
I will get this stickied, it is on my long list of things to do. 
