This can't be good . . . .

marcesq · marcesq's Garage

Pulled the 3.2 because of an oil leak on each side of the motor that appeared to be oil return tubes, but they are new, so I knew it had to be coming from somewhere else above the ORTs.

Pulled the valve covers and this is what I found on the left intake. There is a similar event occuring on the right exhaust.

I guess the good news is that the leak is not the sealer between the cam carriers and the heads.

Help and a remedy would be greatly appreciated.

Thanks as always for the assistance.

RoninLB · 12-13-2002, 05:17 PM

Rocker shaft seals should help.. not bulletproof but worth a try.. Pelican sells them.. and when I install rocker shafts, I install them with rockers dry.. then inject oil into the itty bitty hole.. I need all the help I can get .........Ron

marcesq · marcesq's Garage

Ron:

Thanks. Any idea on how or why this happens. Its a good thing the snow came around or I might have had a rocker try to find it's way out of the valve cover.

Regards,

Marc

RoninLB · 12-13-2002, 05:26 PM

Quote:

Originally posted by marcesq
Ron:

Thanks. Any idea on how or why this happens. Its a good thing the snow came around or I might have had a rocker try to find it's way out of the valve cover.

Regards,

Marc

Marc... you didn't say on your opening thread that the shafts were loose.. is this true?? ........Ron

Doug E · 12-13-2002, 06:09 PM

When the lead mechanic of the NoVa group asks a question and needs help all I can say is .... BUMP!

Sorry to see this buddy.

hbrand · hbrand's Garage

All you have to do is get the 2 !! (one small one larger) correct metric allen key and tighten them up after you have centered the shaft.

Works for me all the time.

RoninLB · 12-13-2002, 06:25 PM

Quote:

Originally posted by Doug E

Sorry

sometimes being a good wrench is more complicated than motivation.. and good management means being able to marsall all available resources, including people.. it's kinda like traveling with a family of German Shepards.. check it out.........Ron

Doug Zielke · 12-13-2002, 06:35 PM

German shepards??

Anyway, check out this link from good guy Walt Watson of Competition Engineering (Walt's War on Oil Leaks).
http://www.competitioneng.com/WaltsPage.htm

marcesq · marcesq's Garage

Ron: I haven't turned the motor yet to TDC of #2 to see if the shaft is loose. I ran out of gas tonight, so it will have to wait.

What if they are loose?? I assume that you mean loose to up and down movement. Does that mean new carriers?? The engine only has 25k on it.

DougE: Thanks for the kind words. It looks like my skills elude me when it comes to my car

DougZ: Thanks for the link, it will be a guide for the repairs. BTW, JW said exactly the same thing in a PM. Great minds thinks alike.

Marc

RoninLB · 12-13-2002, 07:43 PM

Quote:

Originally posted by marcesq
Ron: I haven't turned the motor yet to TDC of #2 to see if the shaft is loose. I assume that you mean loose to up and down movement.

Great minds thinks alike.

Ok.. most likely the shaft play with rockers is perfect.. and the shafts are snug in the towers/no sweat then.. if my 911, I would check each shaft, might as well check all of them while your in there, and check for shaft bolt torque.. retourqued shaft bolts is kind of a toutchy feelly thing with me.. I have an idea when the male/female threads would start to stretch, and I use JW and Walt's torque suggestions for a guideline.. then see what happens to oil leak.. pulling the rockers and shafts for seals alone is a PIA .. maybe JW has another approach? ........Ron

marcesq · marcesq's Garage

Thanks Ron. The motor is out so might as well do the right thing. . . check and seal each one.

Any idea what the black slimey stuff is on the ends of the shafts. Look and feels like rubber or silicone broken down. Is that the old seal

Thanks as always.

Marc

RoninLB · 12-14-2002, 06:41 AM

Quote:

Originally posted by marcesq

Any idea what the black slimey stuff is on the ends of the shafts. Look and feels like rubber or silicone broken down. Is that the old seal

... assuming it's factory stock.. then no hard info.. and, factory didn't install the shaft seals, they are a racing part. a dealer may not even be able to come up w/a part number. the RS shaft seal is part # 911.099.103.52 ..a guess would be stale/over cooked/old oil drips.. unless the factory used a break-in grease/don't know.. then again, maybe a wrench tried to seal oil drips from the outside of the shafts. go figure.... and for entertainment w/valve adj. using a dial indicator, which I don't use, try this one..

1- tighten the adjusting screw until you have taken out all of the play.

2-rotate eng till .005 valve lift

3- back the adj. screw out till you read .001 on the dial.. thus exactly .004

.. this method eliminates a lot of BS problems using a dial for valve adj., which Superman explains clearly on a very recent thread
.I love this method for setting cam timing. but never wanted to bring it up on an emotional valve adjusting thread.. it's safe here, LOL................Ron

bill3667 · 12-14-2002, 06:51 AM

I've only had my 911 for 2 mos. and when I had the valves adj. I had the PPI wrench do them so I have yet to see what the inside of a valve cover looks like.

What in the photo was the problem? Is it that the wrist pin (rocker shaft ?) looking thing was backing out? Educate me please?

Bill W.
'88 911 Cab

rs911t · 12-14-2002, 07:20 AM

Quote:

What in the photo was the problem? Is it that the wrist pin (rocker shaft ?) looking thing was backing out? Educate me please?

Bill, thanks for asking the question I felt stupid asking!

marcesq · marcesq's Garage

No such thing as a dumb question, I just wish that the picture was not mine.

Yes the rocker shaft is about a 1/4" out of the journel. If it had moved much more the rocker would have be free

Now that would have been bad.

The end of the shaft should be just about flush with outside of the journal.

Now I have something else to too this weekend

marcesq · marcesq's Garage

Quote:

Originally posted by RoninLB
... assuming it's factory stock..

Ron: You are THE man. Valve adjusting made easy . . . . that just doesn't sound right.

As to the black stuff, it's not oil, so it must have been something put there after the fact.

RoninLB · 12-14-2002, 09:46 AM

Quote:

Originally posted by marcesq

Yes the rocker shaft is about a 1/4" out of the journel

Hey Marc..I believe your 3.2 is the same as my 2.7 when it comes to rocker shafts.. the curved part of the shaft sticks out of the skinny side of the web journal about 1/4in. .. check a picture.. and a crazy factory way of finding the set position, which comes down to centering the shaft on the rocker.. and a right/left position of the bolt/nut to aid shaft removal.. and we will have lunch, my fault on last non-visit.........Ron

marcesq · marcesq's Garage

Ron:

Here is a picture of the #2 and #3 intake rockers. #3 is in the right position as I understand it, and looks like the majority of the the other rocker shafts.

Not sure what you are saying.

BTW: Hershey is 4/26. Lets make plans.

Gunter · Gunter's Garage

It looks to me that the #2 rocker shaft has moved. Sometimes the rocker shaft can break right where the expansion grooves are. Or else the wrong torque was used on it. You need to see how the shafts are designed and how the ends expand when the internal Allen screw/nut is tightened. You'll need a 5mm and 8mm Allen wrench to take the shaft out. The Bentley manual would be of great help to you along with Wayne's book. If the engine is out? you can do all sorts of things that won't cost very much.

marcesq · marcesq's Garage

Thanks Gunter. Engine is out, but got the "while you are in there" treatment in August when I did the conversion.