Author Topic: Update: Cooling problem / Part II: Timing case (Read 3484 times)

HarrisonS · « **on:** April 01, 2007, 11:09:41 PM »

Hey guys,

I just thought I would give you an update. I was having a cooling problem with my 91 318is and I went ahead and replaced the thermostat. However, it continued to overheat and have an even bigger leak than when I started. I found out that the waterpump was leaking. After 4 days of trying to get a corroded water pump out, I accidentally made a small hole in the timing case cover (about 5mm). Do I need to replace the cover? will it run without any damage to the engine with the hole??

-Harrison

Shocker · « **Reply #1 on:** April 02, 2007, 12:18:05 AM »

Take it off and have someone weld it or the cheaper solution is get some JB weld (which I don�t recommend) and fill the hole.

HarrisonS · « **Reply #2 on:** April 02, 2007, 12:35:55 AM »

Another thing to keep in mind is that the metal from the hole is floating around in there somewhere. Is it driveable with the hole? What does the cover cover up?

Shocker · « **Reply #3 on:** April 02, 2007, 12:59:55 AM »

Quote from: HarrisonS;22661

Another thing to keep in mind is that the metal from the hole is floating around in there somewhere. Is it driveable with the hole? What does the cover cover up?

Well you have to find the chunks of aluminum that fell into the motor other wise bad things will happen.

Alpine003 · « **Reply #4 on:** April 02, 2007, 11:09:12 AM »

You definitely need to find that piece of metal. If you can't find it in your timing case, it most likely went into your oil pan. Better to take the effort to locate that or possibly suffer engine failure later.

HarrisonS · « **Reply #5 on:** April 02, 2007, 01:29:46 PM »

i suppose it could also be a puncture, and then the metal wouldnt be inside the timing case...

The only thing is that I dont have the tools, experience, or the money to take the timing cover off. So if its possible to stick some jb weld in there for a couple weeks until I can gather the funds to permanently fix the hole (and maybe get the metal out, if its really in there), that would be sweet..

318is91 · « **Reply #6 on:** April 03, 2007, 05:39:07 AM »

taking the cover off isn't that bad and if you do the right prep work jb weld works fine (it has a very similar expansion rate too aluminum) and have known some people too use it in repairing blocks on sprint cars and it held up fine. The problem is when the right prep work is not done and it is not given its full time to cure it can fail pretty easily

dlmrun2002 · « **Reply #7 on:** April 03, 2007, 07:30:07 AM »

I have a timing cover if you need it. Just have to degrease it since it is coming form a parts engine..
DLM
Got new motor mounted to tranny. It sucked..thank you very much to an inferior engine hoist that didn't have a long enough reach in engine bay. Now to plug and play as time permits...

Poll on these rims...

HarrisonS · « **Reply #8 on:** April 03, 2007, 04:38:02 PM »

Ok so I went ahead and decided to apply some jb weld over the hole and reassemble the cooling system. No leaks and its not over heating!!! but now I can't rev the engine past 5000 rpms without the engine cutting out (almost as if there was a rev limiter set there). Any ideas? I thought it might be a vacuum leak. but i dont know where to look.

roadrunner75 · « **Reply #9 on:** April 05, 2007, 01:58:18 AM »

It is possible to make a thread and insert a screw with gasket to fill the hole?

Author Topic: Update: Cooling problem / Part II: Timing case (Read 3484 times)

318is91

roadrunner75