GothingNC

Performed the 15k mile service today

#4,5, and 6 intake were a hair tight and #4 exhaust was a little loose

Spark plug change was a snap with the factory spark plug wrench

Other then that all went well and finished up in 2 1/2 hours, easier with backdated heat, no AC and SSI's

Runs much smoother now and the pop out the exhaust that would occur if I reved at idle and quickly released is now gone

Now it's Bitburger time

John

jwilson95

nice work

dshepp806

Yes: COOL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I'm **** with my distributor cap and rotor. (15K min.)

Enjoy that brewsky, bro'!!!!!!!!!!!!!!!!!


Doyle

User 4221

Great! I'm doing this tomorrow.... Including cap and rotor.

I'll post results tomorrow.

Ed Hughes

That's always a good day after doing a valve adjustment and buttoning it up.

GothingNC

Thanks !

I was really worried about having a seized spark plug but all were compliant during removal.

I used ramps instead of jackstands, felt more secure getting under the car.

Just finished up cleaning the road grime off the underside and will be changing the brake fluid.

John

ivangene

way to go,
I have yet to tackle this task.... mental fear and having had it done right before I bought the car are keeping my hands outta there for now

User 4221

I've got everything off and the engine is cooling. I'm amazed how easily this thing came apart. No pulled cover studs, no drama.

I have, however, found something interesting. I'm hoping it is SOP for Porsche but wanted to post it here (also on the Bird).

While finishing the cover removal I notice a part number on the camshaft housing. It reads 964.105.111.1R.

PET doesn't show anything on this P/N but a web search shows it as an '89 964 camshaft housing on some site called German Sports Care Spares (UK).

I know some weird things began happening in '89 on the switch to the 964.... Things like body parts, seals, etc.

However, did Porsche begin installing 964 camshaft housings on 930/911 engine cases.

BTW, I searched the engine S/N and it shows as period correct for the car and I don't see any major engine work done in the car's history.....

I'm perplexed...... Anybody else out there seen this?

Ed Hughes

There typically is no drama with removing valve covers. It is the studs hidden inside that cause the drama. Make sure the car cools overnight-it needs to be stone cold, not simply cooled off.

User 4221

Thanks, Ed. I had planned on letting it sit overnight. It will be as cold as the Dallas weather allows

Is there any way the layman can check the head studs? I don't want to disturb them with a wrench but have pulled and attempted to turn by hand with no movement.

Anything else to try?

User 4221

Thanks, Ed. I had planned on letting it sit overnight. It will be as cold as the Dallas weather allows

Is there any way the layman can check the head studs? I don't want to disturb them with a wrench but have pulled and attempted to turn by hand with no movement.

Anything else to try?

GothingNC

Scott,

No need to worry about the head studs if they did not fall out with the valce covers.

Now I have to deal with my "random" hunting idle - (CIS)

I have not found any air leaks.

Purrs like a kitten and once in a while it will start revving between 700 and 950 for a few minutes and then smooth out a few miles later.

I removed the oil cap when it was hunting and the idle stablized. So I turned off the motor for a minute to check thngs out, restarted and it was running normal. I removed the oil cap again and the idle dropped like it should.

Took it for a drive and while I was stopped at a light and light a switch it started acting up again. Got back home and it was running fine

Not sure if it's something electrical or fuel related or just the normal way CIS acts.

I'm going to lean out the mixture by a hair to see what happens.

John

User 4221

John,
It sounds like you may have the beginnings of a vacuum leak. Perhaps a hard plastic fitting is expanding/contracting with heat? Just a thought.

BTW, I solved the mystery of my 964 part number on the cam housing. It is an internal part number (casting number) that Porsche uses..... Gotta love having a transition year car.

Good luck with your idle. CIS can be tricky

GothingNC

That's what I'm thinking.
Need to probe a little deeper...

Glad you solved the part mystery

John

Brett San Diego

I'd say it's worth having the CO set properly by a shop with a gas analyzer at this time, if you have never had it done. I don't have anything for the idle issue. Only that it's not normal.

Brett