Yes, it is do-able even by a "BT" guy like I was (BT = Before Tony) You won't get absolute perfection but you can get real close.

It is a moderate PITA to get the allen screw down in there. Let me get some better pics and I will pull some posts together for you so you can absorb them. There also is a slim chance you may have an anti tampering plug (or dust plug) in there but I bet they did not put them on ROW cars.

Hold this space..........

Too old but could still quicker than most guys......
 

Bob,

Why are you picking on an old senior citizen like me? Remember you'll be like me someday. BTW, I have some pictures to share.

http://forums.pelicanparts.com/uploa...1319333976.jpg

http://forums.pelicanparts.com/uploa...1319333989.jpg

Tony

Thank you for the pics. Perfect.

That is a sweet 3mm wrench. You will notice Tony has his last will and testament packed into that handle bore. http://forums.pelicanparts.com/support/smileys/wat3.gif

I just bought these at Harbor Freight Tools and they were $7 on sale. They do not clear the metal fuel lines on my 81 but they will work on the non-metal ones.

http://forums.pelicanparts.com/uploa...1319337833.jpg

Bob, I think im going to buy those. harbor freight is now selling them for 4 dollars on sale. out of curiosity, will the 3mm wrench fit down under the top of the back seat/ top of the engine compartment, if not ill have to make one of those two piece ones depicted earlier.

Do you have the "plastic" lines? If so, yes they will fit.

Too long........
 

Those colored T-handle allen wrenches are too long to fit with the engine installed in the car. Even if you don't have any sound pad, there is not enough room to wiggle it into the hole. The HF allen wrenches (shown in previous posts) are more than 6" long. I could use the HF wrench with the engine off the car. I'm using a 4.5" long allen wrench and it's a tight fit.

Try to put a 6" long wire and see if that would get into the hole. I could not get anywhere close with the 6" allen wrench. Let us know. Thanks.

Tony

Six inch would never make it. These HF ones are spec over 5 1/2". I do not have a sound pad and it is tight tight tight and maybe impossible for a hole that has not been mangled like mine. I am taking some measurements and some pics with my regular tool I use vs the HFT wrench.

Some of the tip of the HF tool could be cut off and it would be ok clearance wise.- heck, even the handle ends could be lopped off for side clearance problems with the metal fuel lines.

Did you make that tool, Tony? That is slick.

3mm wrench length
 

HF wrench is just a spec over 5.5" It barely fits in my car because I have no sound pad and two holes drilled (factory and "other") The boss the factory hole is drilled into, when they drilled the other hole, has been chewed up enough to allow clearance. Will not be even close to clearing with a sound pad.

Here is wrench along side the wrench set I normally use. My DIY made 3mm bit is 3 3/4 inches long. It should be 4 inches to allow the big allen wrench I use to clear the metal lines better. Works but rubs.

Some of this is moot is you have plastic lines. The 4 1/2 inch length Tony uses can be achieved by cutting one inch off the 5 1/2" HF wrench. IF you have metal lines you will have to cut down the wings of the handle to skinny it up. Tony - Yes, that is rust on the handle of my 12" precision square.


http://forums.pelicanparts.com/uploa...1319404076.jpg

FWIW - Here is my set of adjustment holes.


http://forums.pelicanparts.com/uploa...1319404239.jpg

That's another HF set.........
 

Bob,

The 3-m allen wrench in the picture is part of a set from HF and slightly over 6". I got a 4.5" length allen wrench similar to yours. There are several special tools and gadgets that I made from scratch and use them on regular basis.

Tony

HFT - You are correct, Sir! Except the one in my set is 5.5"" and is un-cut. They must have different length sets.

edit - The 10mm in my set is 6 1/16th.

yes, i do. believe it or not, im so impatient i couldnt wait so i just ran to osh, bought a $4 set of metric wrenches and they fit without modification. i was really happy and surprised with that. i can only do small turns but it gets the job done. just to verify, clockwise = richer?

thanks
scott

Correct.

Good luck. Make sure the car is completely warm. I am talking at least 20 minutes at idle (I don't think you are roadworthy, right?) and make sure the Aux Air valve and WUR electric connections are intact.

Edit - No dwell meter still, correct? A dwell meter is $30 and exhaust analyzer is hundreds on up. Dwell meter is second string behind an analyzer but is pretty effective. I will find you Soukus' thread on doing it w/o an analyzer and post asap.

Edit - Here is is.

http://forums.pelicanparts.com/porsche-911-technical-forum/232089-cis-idle-speed-mixture-setting-without-analyzer.html

only 30 bucks? alright, im going to get one to fine tune the air fuel mixture right. all the connections are in tact and i will let it warm up and then do some adjusting.

thanks
scott

I lied. $38. I bought mine back in 1927, the day Tony had his 20th high school reunion.

The mighty Actron:

Buy Actron Dwell/Tach/Volt Analyzer CP7605 at Advance Auto Parts

haha
looks great to me.
thanks

the 3mm allen out of the sears set fits perfectly.

wow, thanks for the link. way more in depth than I would have expected. I have been doing it by hand/ with no testers thus far and I think I will continue that way with the help of this thread.
Thanks
Scott

Hope it helps.

Scott, how did this test work out for you?

I'm having cold start issues on my '82, and I wonder if it is lack of power to my lambda sys (and FV?). I have a short somewhere that keeps blowing fuse 18.

Good luck.

For what it's worth, lately, my '82 had been coughing and spitting at start-up until the engine warmed. Actually the only way to start the car was to richen the mixture using the 3-mm allen wrench.

I got power back to the O2 system under the seat and the car started right up this morning. See: http://forums.pelicanparts.com/porsche-911-technical-forum/550846-fuse-18-blowing.html

Now I need to fix the mix again. Don't mean to hijack, but I'm gonna ask another question or two about the dwell meter thing on your thread shortly.