*tik tik tik * at low RPMS

[SHOfun 93]

I have noticed a ticking sound starting to deveolp with thte 93 at low rpms and idle. It goes away when I take off from stops, and appears to be coming from the bottom part of the motor, as I believe it isn't shim/cam related. Engine bearings? Is it time to change them? Is that a tough repair? Do they have to be gapped or anything like that? I have to change my oil pan gasket, so might as well do that too if it needs it.... headbang

 

[stevetatro]

If it is indeed rod bearings, the toughest part of the job is getting to them. Since you plan on replacing the oil pan gasket anyway, you're almost there! Once the pan is off, you remove the oil pick-up tube, the baffle, and there you'll see the rod caps.

Physically changing the bearings is the easy part!

You can buy the Clevite CB-1435P rod bearings for about $7.49/set from Napa (online or B&M stores).

Good luck.

 

[luigisho]

Replace them. See how here http://www.kurtmetros.com

 

[SHOfun 93]

hmm where on Kurt's site is the writeup? Couldn't find it... shrug

 

[Yamaha V6]

http://www.kurtmetros.com/bearings.html

 

[luigisho]

Look in 'other stuff' and choose the service info. folder.

Man that Fred's fast.

<small>[ May 28, 2003, 11:10 AM: Message edited by: luigisho ]</small>

 

[sdpatt]

Jeremy, here is my topic on the rod bearing replacement. You will find a step-by-step procedure farther down in the replies. As stated, the toughest part is getting to them.

 

[SHOfun 93]

Thanks a bunch Scott, where can I get the bearings at again? There isn't a NAPA anywhere around here? O"Riellys, Autozone, and Parts America are my 3 options. Thanks a bunch, and looks like I got my work cut out for me on the weekend. Sheesh the things I go through for the Summer Run! eek!

 

[sdpatt]

Try calling around. If you can't find them locally, you can order them through NAPAonline.com. You are looking for the Clevite CB1435P standard size bearing set for about $7.49 ea. You will need 6 of them. You will also need the Fel-Pro OS30636R oil pan gasket set with silicone for about $15. A torque wrench is mandatory for this job as is being gentle and careful with the crankshaft's bearing surfaces.

<small>[ May 28, 2003, 03:28 PM: Message edited by: sdpatt ]</small>

 

[SHOfun 93]

Well I was looking to get this done before the run, but until then can I run a heavier oil to prevent the tickin a bit and do it in a few weeks?

Also..I didn't see the plastigauge mentioned in the writeup Scott, did you use it? And if so, how? shrug

<small>[ May 28, 2003, 05:28 PM: Message edited by: Jeremy Hohn ]</small>

 

[Ishodu]

Plastigauge is just placed between the bearing and the crank and then tighten them up then remove and compare the strip to the gauge on the package. But that puts more strain on the bolts tightening them twice instead of once. The only way for the size to be out is if the crank is worn, ruined or you got the wrong bearings. So if you got the right bearings I really wouldn't worry about it. I didn't bother checking them just measured the bearings to make sure they were the right thickness.

TIP-Get some rubber hose to put over the bolts on the rod caps so that the crank doesn't get scratched.

 

[SHOfun 93]

Cool. So will running a heavier oil help the ticking for a while? shrug

 

[Tommy's SHO]

I just read the post on the compressor issues..... on your car.
Perhaps the ticking is coming from there and not the rod bearings?
Just a thought......... shrug

 

[SHOfun 93]

You might have something there Tommy. I guess I need to get a mechanics stethoscope and get under there and really listen more exactly.

 

[DHMag]

Jerms,
if you do determine its bearings, i have the plastigage you need. i wont be using it any time soon. if ya need it, email me at [email protected] with your home address and ill mail it to you.

Dale

 

[stevetatro]

To answer the rest of your questions, heavier oil will *probably* let you drive the car awhile. I know Ron Porter drove home from the track event at the convention with a spun rod bearing with 20W-50 in his '95 MTX. He then did his bearings and found no crank journal damage.

If it was me, I'd park it until I was sure. No point in ruining a good crank, right?

Personally, I wouldn't bother with the plastigauge. I didn't, Scott didn't, etc.

Good luck.