worf928

I appreciate the recommendation, but I’m booked into late 2023 at this point.

slownrusty

Great looking car..wow! As mentioned above, that is an impressive amount of work and lots of money spent. What is the mileage? Curious why you had to replace the 5 speed trans?

Nice touch with Aero / Sport mirrors too.

Shark2626

I have a full set of Konis on my S4 too and I love them! But for some reason your car seems to be riding quite high in the front, mine doesn’t look at all like that. You should get it checked out.

And I too added the aero mirrors, but I had the tail painted body color at the same time. Since you’ve added the mirrors why not paint the tail? It will complete your effort to bring the car forward a generation in modern cool looks.

Wheels are subjective to an owner’s personal taste. BBS was the go to upgrade for a 928 back in the mid ‘80’s, completely changed the look and made the car actually look “faster.” The wide lip rims are very cool. It’s hard to go wrong with just about any wheels on a 928; from my perspective today looking back the stock S4 wheels really are super just as is. I have more conservative thinking I guess, not a purist with my car just conservative, so I just always upgraded to whatever the latest OEM Porsche wheel design that came out over the years, eventually stopping at 18” super lightweight turbo twists.

Instigator56

Dan (aka "DHS928"), I used the "Dual High Performance Fan Kit" from 928 Motorsports (P/N: COL-DRF).

The "total change out" was a combo of situations.
1) The R12 A/C compressor failed--it had a crack. So, I changed everything to R134a; this was "before" I found out about the need for "barrier hoses". This meant changing, along with the compressor, the receiver/dryer, the vacuum check valve, and the expansion valve.
2) The HCV was closing fully; thus, causing a 5 degree rise in A/C temp. So after discovering this problem, we changed this too.
3) The condenser pusher fans were recommended by my mechanic to make sure more cold air went across the condenser so I would have a better chance of maintaining A/C in city traffic. The pusher fan is wired to the compressor circuit so it goes on when the compressor is engages as opposed to having it always on when the AC button is turned on. Also, after talking with "Griff" at Griffiths.com, I opted not to replace the OE condenser with a dual-path condenser.
4) The new radiator was recommended by me as a precaution. My 928 already was running a little warm in traffic "before" the pusher fan installation. So, my concern was that it would run even hotter with the warm air pushed though it by the new condenser fans. Therefore, I replaced the OE radiator with an all-aluminum one from 928 Motorsports.
5) The high-capacity alternator also was a precaution. Prior to the pusher fan install, the OE alternator wasn't able to keep up with the car's electrical load on hot day or at night especially in stop and go traffic. In some instances when I was at a stop light, I had to rev the motor just to keep the volts about 12 so the battery would charge. I didn't think this would improve after adding "another" electrical motor; so I got the 175 A alternator from 928 Motorsport (P/N: ELE-HOA-176A-88-95).

All of the work was done by the team at Eurosport Auto Care (Davidsonville, MD).

As for the rear evaporator, I'll add you to my list! My hope is to generate enough interest to get a NEW rear evaporator into the 928s of anyone who wants one. I don't get why there isn't someone out there in "after-market land" not already making these. I believe that there is a market for them.

Instigator56

"Zirconocene", thanks for the complement!

I have been reading some of the posts mentioning the amazing work Greg Brown has done to improve A/C efficiency in 928s. He also posts some things in the comments of BAT 928 auctions. Moreover, "SPUN"-- one of the car's former owners--has this very conversion in this 6.5 L Stroker (https://rennlist.com/forums/928-forum/780612-curse-you-greg-brown-and-your-team-at-precision-motorwerks-stroker.html)

However, I opted not to go this route (yet) for a few reasons. By my understanding, to implement the Greg Brown approach means deleting the washer reservoir bottle on the passenger-side of the car to make room for the secondary condenser and associated condenser fan. Also, one would change the windshield concentrator reservoir to be the only source of washer fluid for your windshield. In addition, you lose the headlight washers. I just wasn't willing to give all that up yet. However, for those who live in places like AZ, I totally understand...

Instigator56

"SlowNRusty", thanks for the complement as well! Currently my 928 has ~74K miles. Also, I didn't replace the 5-spd transaxle at all; the "transmission" I was referring to was related to the mechanism associated with the sunroof--sorry for the confusion. For a moment there, I thought you were my car's "928 Whisperer" warning me about something that's about the happen... I think that I've spent enough already.

The GTS mirrors were done under SPUN's ownership.

Instigator56

"Shark2626", I thought the same thing after I had the work done. However, I verified that the ride height was set at 175 mm on all corners. I got this spec from the internet (https://928.org.uk/13-setting-the-ride-height.html). I think that this height was recommended to avoid damaging either the A/C compressor and/or the alternator. Also, after this was done, my 928 no longer scrapes the bottom of the driveway as it did before the suspension changeover.






As I mentioned in a previsions post, the GTS mirror were done by one of the previous owners (SPUN). I too like them; however, when I got the car I was confused since I was expecting "flag" mirrors. I'm not planning to spend money on paint until I get all of the corrective maintenance (and upgrades) done.

I went with the BBSs primarily because I like the way that they looked on a car on BAT (https://bringatrailer.com/listing/1993-porsche-928-gts). I also liked that the offset allowed me to get 10" rears in a 1989 928 w/o either rolling the fenders or setting the rear ride height higher. Now, if anyone can source 18" phone dials, then count me in!!

Zirconocene

I love the look of those wheels, I wouldn't change a thing. Now, if we were talking about the more "classic" basketweave BBS wheels, I don't think those would look to my taste on a 928.

All that said, if you want to empty your wallet even further, Augment is making some replica wheels in larger diameters. Sometimes I visit that site to drool a little bit: https://www.augmentwheels.com/pages/porsche-inspired

Cheers

milrad

Really nice work. I have a similar project going on.

I'd be interested in a rear evaporator too. The AC in my car has been disconnected for quite some time (by the PO) so I'm sure I'll also be replacing a bunch of stuff when I get to it.

Instigator56

OMG!! 18" Phone Dials exists??!!

Wisconsin Joe

Bingo.

The actual, correct ride height appears a bit high to most people.

But it's important to set it correctly, both for handling and to prevent bottoming out.

I have mine set a bit low (170mm) and I still have a fair amount of space at the top of the front tire.
I also run skid plates and they hit on sharp driveways if I go too fast.

Instigator56

"Wisconsin Joe", every time I look at underside photos on BAT for 928s, I check for the scrape marks just behind the front bumper cover. The lower they are, the more scrape marks you see...