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It was Thunderbolt, by me, at the 2017 club race. This engine was 9 years old with ~150 hours on it, so I think there would be more there with a freshly rebuilt engine (maybe even a 1:26.9).
It was Thunderbolt, by me, at the 2017 club race. This engine was 9 years old with ~150 hours on it, so I think there would be more there with a freshly rebuilt engine (maybe even a 1:26.9).
Very impressive. I was just learning the car we dubbed the **** Box which is essentially setup as a cup car, an old club racer you probably competed against and I could just barely get 1:34's out of it before my son money shifted it. Picking up the rebuilt heads tomorrow so now I have something to strive for. Most of the DE drivers today in their GT cars can't do much better than a 1:28 the fastest I have seen was a 1:25 out of a new GT3RS.
It was Thunderbolt, by me, at the 2017 club race. This engine was 9 years old with ~150 hours on it, so I think there would be more there with a freshly rebuilt engine (maybe even a 1:26.9).
I love watching this video. I'm a fairly inexperienced driver but the best I did at tbolt was in my 993, a 1:31 with in DE with a point by between turns 5-6 that I had to lift for. I'm always impressed that you carry enough speed to maintain 3rd gear in t5 and t9. I always got better times going to 2nd in those turns on the 993 6 speed box, stock gears with shorter R&P. I'll probably never push the 964 that hard on a track but it's great to see what they can do on my home circuit.
I am working on getting a private group together for the MOE day on 9/15. Anthony and Carmello you're welcome to join. I believe both of you have my number but feel free to PM me if not.
I love watching this video. I'm a fairly inexperienced driver but the best I did at tbolt was in my 993, a 1:31 with in DE with a point by between turns 5-6 that I had to lift for. I'm always impressed that you carry enough speed to maintain 3rd gear in t5 and t9. I always got better times going to 2nd in those turns on the 993 6 speed box, stock gears with shorter R&P. I'll probably never push the 964 that hard on a track but it's great to see what they can do on my home circuit.
1:31 is a great time for a 993! On downshifting to 2nd, I end up braking too much and while the exit launch is faster, I do end up losing time. That's the good thing about data, helps to prove what is/isn't faster.
Originally Posted by cobalt
Very impressive. I was just learning the car we dubbed the **** Box which is essentially setup as a cup car, an old club racer you probably competed against and I could just barely get 1:34's out of it before my son money shifted it. Picking up the rebuilt heads tomorrow so now I have something to strive for. Most of the DE drivers today in their GT cars can't do much better than a 1:28 the fastest I have seen was a 1:25 out of a new GT3RS.
Here's a 1:25 in my 981 Clubsport, the car that has replaced the 964 as the primary race car. I can still carry more speed pretty much everywhere, so I am thinking 1:23s are possible. The fastest cars (991 cups) are doing 1:22s.
The club sport is an amazing machine and you drive it so smoothly.
I finally pic up the heads to my engine today and hopefully will have some seat time this fall. I was just getting to learn the car when the engine went boom at 8500 rpms. I looked back over my data and I was actually doing 1:32's with an optimal 1:30.4. it was my son who was doing the 1:34 (first time in a 964) and catching up to me. I think I need to get some grippier rubber the cup 2's have their limits.
Does anyone know what these holes are for? They are in the rear on the box trim piece where the seat belts come out of on both sides. Didn’t notice them before as they are hard to see. Not sure if this is 964 or US Cup specific or maybe a previous owner had a roll bar mounted here or something?
Those holes connect to vents hidden behind the belt reel cover. The vents then exit at the front wheel behind the plastic wheel shrouds in the area of negative pressure behind the oil cooler on right and where A/C condenser on left goes in a normal C2.
Those are 993 pieces the 964 did not have the holes. The ones I have look like this. 96455532700 & 96455532800 These are RS/RSA/Cup car pieces and are NLA
The 993 version has the hole and is part numbers 99355532700 & 99355532800 and are still available new from Porsche.
Those are 993 pieces the 964 did not have the holes. The ones I have look like this. 96455532700 & 96455532800 These are RS/RSA/Cup car pieces and are NLA
The 993 version has the hole and is part numbers 99355532700 & 99355532800 and are still available new from Porsche.
I found the vents on a RoW 964 RS with only 164 km from new. Car also sold at RM last week. Noticed the luggage compartment on the US Cup is narrower than the one on the RS America. Have looked at numerous US Cup’s that still retain their luggage compartments and they seem to be narrower. IDK if this is to make room for that vent just a guess.
Well yet another 964 point of confusion. There seems to be endless amounts of this stuff. We should call the 964 "Hydra". We answer one question and 2 more pop up. This hasn't been on my Radar, so now I must look at every RS/ original US cup I see.
To my chagrin the RSA part is different along with the part number. Since only one part is shown or listed in the PET and so close 327(328) vs 427(428) I mistakingly made an assumption they were the same. My bad. When I helped my friend build his 993RS clone I had noticed the round port. I am not sure what is different from the 964RS and 993RS but they carry different part numbers. Seems counter productive to make 2 different parts for such low production needs but this is 90's Porsche we are talking about.
I posted a pic of the part number. I hate to make another assumption but I now am curious if these were used on the Cabs with rear seat delete? I guess the parcel shelf has no way to vent. Yet another enigma why not use the RSA version if it had the parcel shelf from the factory? Not made yet 92 vs 93? A similar less expensive part to discard? We will probably never know.
So I was planning on using these on my 3.8RS tribute one day but now am considering the 993 version which is still available. Thanks for setting me straight on this. Sorry for the confusion and glad yours is original and we have you and Bob to help point these things out.
PET shows p/n 964.555.327.(328).00. There are no p/n's listed for the RSA version in the PET.
I bet the 964 and 993 reel & vent cover is the same plastic bit but with a hole cut for the plastic vent hole piece used in the 993. And I also bet that vent piece is also used somewhere else on some Porsche model.
The function of the cover is to protect the inertia reel and that funky little one way flap piece covering the vent into the chassis itself.
The way the RSA luggage dump is shaped covers both the reel and the vent so no need for the separate cover.
I bet the 964 and 993 reel & vent cover is the same plastic bit but with a hole cut for the plastic vent hole piece used in the 993. And I also bet that vent piece is also used somewhere else on some Porsche model.
The function of the cover is to protect the inertia reel and that funky little one way flap piece covering the vent into the chassis itself.
The way the RSA luggage dump is shaped covers both the reel and the vent so no need for the separate cover.
Possibly. Although the injection molded part number has me confused. I have seen parts used for dual purpose and usually they don't have a number like this. I would think making it with the hole and covering it with carpet would be the easiest approach but we me never know.
I was working on a Carrera GT with a friend and found the front toe hook cover is a 964 part. I also have seen some parts used on the 996 and 997 cars that are identical to some RoW 964RS parts like the bumper supports non impact absorbing. The 964 part is still available from Porsche but multiples of the 997 part. I think the 997 part was $47 the 964 was several hundred.
I have factory WB 964 front splitters from a 3.8RS on my turbo. They came attached to the lower covers and had the standard part number in raised letters but came with a sticker and different part number so what is the real deal with these parts I might never know.
07-26-2023, 08:51 AM
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