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pics required, I seem to remember some blonde action happening some time ago. I think you'll be surprised at how simple the EFI was after your done. Philip
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87 930 GHL/Rarlyl8 dual/Garretson/GT3582R/1 Bar/Wevo shift, mounts/Meth inj/LC-1/Custom Fuchs/Carrera intake manifold/Xtreme Carrera heads P&P/3.4/DR 993SS cams/ Mahl/Pauter/JE/Niresist/ARP/twin plug coil packs/8.25:1/KEP stage 2/twin tials/close 2,3,4th. SDS EFI tuning always in progress. 500+ HP, BTSOMP Dyno
Old 07-30-2013, 07:09 AM
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Quote:
Originally Posted by pkracer21j View Post
girlfriends require a shoes and bags fund, strippers require a healthy blow habit that you'll fund, escorts are everything you want for just the right amount of time. Proper etiquette lesson here: we only call them hookers after they're dead, if they're breathing their escorts.

BTW, good luck with the EFI conversion. Listen to Frankie! He's not that smart until you hear his thoughts on megasquirt, and hookers.<- proper use of the word there.
trust me i know all about shoes dresses and bags. thats the fund thats been converted to the efi rebuild
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 07-30-2013, 08:03 AM
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Well did a little more today beofre the rain. pulled the tires off and drained the tranny fluid. Looks like i have an alignment issue to work out when it goes back together. Too much negative camber?

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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-02-2013, 12:40 PM
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Hard to say about the camber without seeing them while they're on the car. It probably is from too much negative camber or it could be from the rear wheels being toe'd out.

The center of the tread looks more worn than the sides and that usually means the tires have been over inflated for a while which sort of balloons the tire out a little. Then the center of the tread has more weight on it than the sides, the rubber there gets hotter and wears down fastest.

Last set of rear tires I had were 315/30x18 Falcon Azensis RT 615 and I adjusted the rear camber as far negative as I could - 2.5 degrees negative camber on each side. I couldn't even get that much negative camber with the stock eccentric camber adjustment bolts in the spring plates. I used a small floor jack and pushed up on the leading edge of the trailing arm flange to rotate it against the spring plate mating surface in the same direction as the camber adjustment bolts to get more negative camber. Then I tightened the 3 bolts.
It's hit and miss while doing that because you don't know how much negative camber you have or where the toe is until it's all back together on the ground and you've driven it to settle everything out.
It's a lot of work... and I do it myself at home with mono filiment fishing line squared off around the car at wheel center cap hight.

The result was 2.5 degrees negative camber and that did make the back of the car stick better in corners but the inside edge of the tread wore out in about 5000 miles street driving while the outer edge had little wear. The centers were not worn more than the rest like yours look and I didn't let it go to the point where the cord and belting was showing at the top edge of the sidewalls like yours are.

Tires are too expensive for me to do that again so when I installed ER polybronze bushings in the springplates and sealed monoball bushings in the trailing arms a year and a half ago I set the rear wheels to about .5 degrees negative camber and toe'd in just a tiny bit. Thats working well.
Now the Pirelli P zero tires I have on the back should last a lot longer than the last ones did. I don't track the car so there's no reason to run a lot of negative camber in back.

I rebuilt the front suspension with new ball joints and tie rods ends, ER polybronze bushings, and sealed monoballs about 2.5 years ago.
Steering is more responsive now and the ride is smoother over bumps in the road since getting rid of all the bonded partially collapsed 25 year old rubber bushings that allow changes in wheel alignment while cornering and kind of act like rubber torsion bars that create unpleasent sticktion in the up and down suspension movements.
Old 08-02-2013, 01:47 PM
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Yeah i no idea the cords were showing. Never run them down like that on purpose. Was thinking of the poly bronze bushings on the back also before i'm all done.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-02-2013, 02:15 PM
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Some good points and advice have already been given, however that cording looks to me like you have 2 things going on.
1-Your rear wheel is out of round [or else the tire is!].
2-Your tire is rubbing on something. Probably under hard boost. Look around underneath and you will probably see where it is happening.

I am presuming: This tire does not have this same damage all around and that your other tire does not look like this. If you note..at least from the 2 images... the cording is on the extreme edge -almost the sidewall - where this tire is unlikely to make road contact. This reminds me of the newer TTs when they install GT2 rear wheels and tires without modding the rear inner wheel wells and bits.

Also, you might try to contact tech people from the tire mfg. Some tires work backwards in terms of center vs side wear. It used to be a given that under inflation caused side wear and over inflation caused center wear. Now some tires do just the opposite. Very confusing to us old school guys.
GL

JR
Old 08-02-2013, 04:42 PM
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It's not rubbing, it's the camber. Mine did that too.
Old 08-02-2013, 06:08 PM
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I can try to upload some images of a 315/30x18s on GT2 wheel that I bought from a tt guy who had exactly this issue.

The damage is either decieving me or it is right on the outer edge at the sidewall. How about images ..close up so we can tell.. of this as well as the other rear tire? I have no interest in being "right". I have a lot of interest in seeing what is really happening as I have never seen this extreme. For that matter, for this to be merely camber or toe the entire inside of the tire should be wiped clear of tread before it gets to well into the cord like this. Either that or I am nuts or the world has exploded on this stuff. We used to run -6 degrees sometimes and even then you would have a lot of inside wear warning you. And... look again. [like I am doing]. That heavy and even center wear tells you that there is no major camber going on.

I haven't raced in 20 years but I have plenty of experience tuning race cars and this doesn't fit.
Old 08-02-2013, 06:43 PM
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Wait! Could this be that the tire was used for a while with a fairly normal camber and THEN changed to something severe? That might make sense. Otherwise I am back in grammar school.
Old 08-02-2013, 06:45 PM
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probably the toe in then. i'll get in all aligned when it's back together and yeah the wheel is bent all 4 of them are from the crappy roads here.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue

Last edited by Ken911; 08-02-2013 at 07:17 PM..
Old 08-02-2013, 07:11 PM
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OK it's ready to drop. would have had it out but it's about to rain didnt want to get caught in a monsoon with it half out.


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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-03-2013, 12:05 PM
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I see you have a serpentine condenser in the tail. Is the AC cooler with it?
Yeah, it's a rainy summer this year.. at least it's not as hot when it's cloudy.
Old 08-03-2013, 08:09 PM
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yes it works pretty well but going to have to move it to the fenderwell when i put in the full bay intercooler.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-04-2013, 11:45 AM
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ok and it's out. easy peasy




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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-04-2013, 11:53 AM
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Clutch off, worn very little i'll be reusing all of it.

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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-04-2013, 03:36 PM
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Lots of balancing bores on that PP, never saw that before...
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Old 08-05-2013, 12:38 AM
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Now the fun really begins. Looking forward to all the pics and progress.
Old 08-05-2013, 02:35 AM
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Quote:
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Lots of balancing bores on that PP, never saw that before...
Flywheel, I mean flywheel!!!!!!!!
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Old 08-05-2013, 02:41 AM
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Yeah it's a stock flywheel. had it resufraced last time i changed the clutch to the KEP. reusing the clutch and pressure plate. Might go with an aluminum flywheel this time, havent decided yet.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-05-2013, 07:17 AM
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Made a little progress tonight after i got home from work. Pulled off the flywheel and muffler.
Tomorrow i plan on having most of the rest of it apart.

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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-09-2013, 04:52 PM
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