Engine noise, the never ending saga

[1kirby1]

I replaced the rod bearings and I still hear this wobbling sound at low rpm like a pulley is loose but I've checked and re-checked all of them. I also drilled right through a broken stud and into the rear exhaust manifold, it's 3/16" in diameter. I looked at the helms for replacing the rear exhaust manifold and it's basically the lower half of the 60k plus some. I would much rather have someone weld it shut IF that would be considered a proper repare and I could get it done for a reasonable price ($50 - $100). I'm guessing somebody with the right equipment could do the welding in about five minutes once they got the y-pipe off, and that doesn't take more than about 5 minutes either, especially since I put all new studs on thumbs_u . What do you guys think? I need to do the valve lash, it seems like it would be cheaper to have someone else do it because I don't know what shims I need and I don't know of any shops that let you return the ones you don't use. Plus there are some special tools that I would probably only use once. Any ideas on this also? Thanks.

rob

 

[DavidT]

Shoshop has a shim/tool rental kit, and so does Fordpartsnetwork.com (I believe)
It would be much more expensive to have someone else do it! I believe the kit only costs $50 upon the return of the kit and your old shims.

 

[Mr Anonymous]

You might try removing your assy belts and turning the assy's by hand to see if one of them is responsible for the noise you're hearing. Could be a bearing in one of the idlers, the alternator, or a failing water pump.

Where in the exh. manifold did you drill, to the head, or the collector end? In either case a helicoil kit (~$5.00 at most auto parts stores) would be your best bet for a proper repair. I'd consider welding an absoulte last resort.

For the shim kit rental, you should also consider Josh at http://www.shonutperformance.com

 

[Rob94]

wobbling, or warbling, sound equals bad bearing somewhere. I have the sound, and it's the alternator. Do as SHOooo says, and try to pinpoint it. Definitely sounds like an accessory bearing.

 

[1kirby1]

I actually drilled all the way through the rusted stud and into the bottom of the rear exhaust manifold where there should absolutely not be a hole at all. I don't think a helicoil is going to help there. I will check Ford Parts Network for the shim rental. I have read the sho shop is not the best when it comes to customer satisfaction and I fear they'd stick me with $200 of shims I don't need. Thanks for the help, anymore ideas of things that would make the sound described. After poking around with a wooden dowl it seems to be loudest on the passenger side of the left (or front) intake manifold.

 

[DavidT]

If not shoshop, I would check with:
For the shim kit rental, you should also consider Josh at http://www.shonutperformance.com as Shooo said.
I forgot about them.