Originally Posted by Louie928

It is time I should think about selling my beloved GT. I have owned it for 20 years and driven it 40k miles since the major mods. Everything works well and it doesn't challenge me much any more except being a lot of fun to drive. New timing belt. New TT bearings from Constantine. No outstanding maintenance issues. Engine does not use oil. There are no cats. Do not expect this to be happy as a daily driver in traffic. While the engine will be fairly smooth in a 20 mph school zone, it would rather be opened up a bit. This is a rather special 928 and there are many mods other than the 6.5L motor. It should go to a special new owner who appreciates fine machinery and will care for it accordingly. The price is $45k.
Email: louie928@gmail.com, louieo@gorge.net

Here is a list of particulars. Pictures follow.

1990 Porsche 928 GT
Engine size increase (bore & stroke) from 5.0L to 6.5 L. Built by Devek.

• Devek B1 camshafts.
• 104mm bore, 3.75” stroke.
• 39mm intake valves. Headwork by Devek.
• Compression ratio 10.5:1

• Oil control work by Ott's Performance includes:

1. Crank scrapers to strip oil from the rotating crank and shield oil from being fed up the oil drainback holes from the head.
2. Oil control screen under the crank to keep oil from hitting the pan and bouncing back into the crank.
3. reworked oil pickup and sump cover inside the sump to keep oil from splashing in the sump.
4. Re-worked breather system to separate oil from blowby gases and vent blowby to atmosphere and return oil to the sump.
5. 3/8" oil sump spacer to lower oil away from the crank. This required a smaller, IMI, gear driven starter. Recently replaced.

• Custom individual throttle intake system designed and built by Ott’s Performance. Uses 50mm TWM Induction components.
• DTA P8Pro engine control computer installed and tuned by Ott’s Performance. Sequential injection. Wasted spark ignition. No distributors.
• J&S Safeguard vampire individual cylinder knock control. www.jandssafeguard.com/VampirePage/
• Bosch 044 fuel pump fed by relay direct from battery.
• 200 proof ethanol injection at WOT.
• 591 SAE corrected rear wheel hp and 510 lb ft rear wheel torque (with alcohol).
• Devek L2 exhaust headers. Ceramic coated.
• Stainless steel dual 3” dia. X crossover exhaust designed and built by Ott’s Performance.
• Oil cooler moved to the rear with auxiliary cooling fan.
• Wider rear fenders designed and built by Ott’s Performance.
• Functional air scoop in the left rear fender to feed cool air to the engine oil cooler.
• Transmission oil cooler built and installed by Ott’s Performance.
• Transmission cooler air fed by scoop inside the rear of the right rear fender. Trans cooler outlet air exits from vents in the rear bumper cover.
• Accusump in rear bumper.
• On board car computer (Windows XP OS) using custom software created by Ott’s Performance to display engine and transmission temperatures, pressures, 8 cyl exhaust gas temperature, and to control oil cooling fan and trans cooling pump.
• Suspension features Hypercoil springs, 600 front, 450 rear. Koni external adjustable shocks. Devek adjustable front sway bar. Ott’s Performance rear sway bar links.
• Wheels are 10” wide front, 12” wide rear x 17”dia. Tires are 245/45 R17 front, 315/35/ R17 rear. 335 tires fit well on the rear if you want. Centers are Kinesis. Right rear rim has curb rash. Rubber is about ½ gone in front and rear. The rear tires are track tires so didn't have deep tread when new. Tire wear is even across the tread.
• 928 GP White paint with blue tint by Ty Tibbets in The Dalles, Oregon. Paint is in excellent condition and has "Clear Bra" covering to eliminate chips and scratches.
• Headlights are H4 with bright white LED from Woodypecker.
• Rear seat delete. Roll bar. Many other modifications. Valentine V1 radar detector and laser jammer built in. Everything works. Handling is outstanding.
  
  
  
  
  
  
  
  Storage underneath in spare wheel space and rear seat buckets
  
  
  
  Stock radio is behind the display which pivots forward for access
  
  
  
  About 128K miles. Idles nicely at 1000 rpm
  
  
  
  I think it is a 930 steering wheel from Dave Roberts. Much work to get it to fit, turn signals to work, and airbag alarm happy.
  
  
  
  
  Nice curves
  
  
  
  
  Locking fuel cap
  
  
  
  
  Blue tint in the clear coat gives a unique effect.
  
  
  
  
  Curvature line blends perfectly from the fender to the rear bumper
  
  
  
  
  In the rain at Thunderhill
  
  
  The stainless steel lines spray 100% ethanol into the intake air horns at WOT.
  
  
  
  Broad torque curve keeping good torque to the upper limit. The RPM cutoff is a soft cutoff at 6600 or it would go higher.