Reaper 935 'RSR' Project

[rsrmike]

I can tell you it will be STUPID fast, I've always wondered what the stock 4speed would feel like with that kinda power, I love the feel of those looooong legs on a tricked up motor, something tells me they won't seem so long with that kinda power though...

I rode in a 750hp turbo mustang owned by my dyno guy, it is still the fastest thing I've ever been in, it also sparked my turbo 928 fetish

[VZ935]

Originally Posted by Reaper930

Van: The motor dyno'd at 634 rwhp at 1 bar and 850+ rwhp at 1.6 bar when the last clutch setup let go., it was still climbing when it went and was at over 850 so we're sure it will be in the 850-900 range at the wheels.

1 BAR
Peak HP 634.1 @ 6,250 RPM
Peak TQ 605.8 @ 4,500 RPM

Stellar numbers !! Since this is a race car I stayed with a 3.2 liter displacement. It's period correct for my 935 but I also found in a race car they live a lot longer than the larger jugged motors. Everything is standard 935 on mine but I did put the new large 997 GT3RSR oil pump in my motor and swiched to Carillo rods in favor of the titaniums. Other than that a few tricks but regular 935 spec stuff with some old K27s . This is my Daytona motor . Only ran it at 1 bar

[SCHNELE]

Gabe are you going to put the REAPER on your license plate, ironic that your name is Gabriel the messenger of G*d and to have such a sinister looking machine is just wrong, my saint name is Peter, the rock and guardian of the gates to Heaven with a car lie that I can finally tell everyone to go to hell.

[SCHNELE]

Van that is some amazing power at just one bar from a 3.2 935 or not!

[willtel]

My god man, that thing is insane. Does driving it require a current check-up from a cardiologist?

I may have to meet you guys up at The Dragon just to see this beast in person, it is a long drive from Atlanta but something tells me it may be worth it.

[Texas Turbo]

I'm a long time member and "never" post but I surf the Pelican and RL 930 boards daily. (Like most of this audience I notice ) Right now I'm watching the Koenigsegg CCX on Top Gear and happened to finally listen to the sound clip of this beast on the lift.

I pressed pause on Top Gear and the Koenigsegg to listen to all 5:07 of air-cooled turbo glory... twice. I think that says something! On top of that I’m actually taking the time to write down my feelings… I don’t do that. “Y’all are the ones doing that”… I just watch. I guess not this time.

As with the other posters, I'm amazed by this build. It is easily up there with the best projects on the forum. Jack's BB2 and Matteo's 74 IROC are amazing projects that were painstakingly “created” and this car belongs in the same sentence.

I don't think this is the "ultimate 930" per say but it is easily the "most extreme" in my book. Since our 930's are often considered "the most extreme" of the air cooled 911's this car makes perfect sense. My ultimate 930 would be closer to a Ruf BTR or CTR Yellowbird (due in large part to R&T in 1987) but I prefer my 930's a little "softer"... if any built 930 can be considered soft by modern standards. This thing is way, way, WAY out there from the bodywork, to the paint, to the amazing wheels that have a story in their own right. Then I heard the motor and the beautiful music coming out of that center mount exhaust. What a great project and tribute to Turbo Porsches!

It is with that same thinking that I have to say until I saw the clip I didn't like the rear wing. Reaper, I'm sure you'll end up with a number of wings so I'll be surprised if we don't see some other looks out of this.... thing. The the flat black makes sense (even though I think it is already played on other cars, yours actually deserves it), the red gauges make sense, and now the wing makes sense. Why not?!?

PLEASE tell me this car will be in Austin at some point, even if just passing through. I've GOT to see this car in person. Congrats, Reaper... your car is sick.

Okay, back to Top Gear and the Koenigsegg. I wonder if we can get Jeremy to come test drive Blackbird in the Central Texas Hill Country once it's finished... ah, a lad can only dream!

Cheers,

TT

[Reaper930]

Van: I hate you man! Haha, THOSE are stellar numbers! From a 3.2!!!!! Just wow, which car is this motor going in? The Coca-Cola car? I just love your collection and enthusiasm for these cars - you're an inspiration to say the least! That is one special motor you've got there - I can only imagine the sounds of that on the dyno! WOW!

Schnele: Good point, but at the same time a messenger needs to get there quick and stealthly...you get the last laugh in the end though! Hopefully we can meet up.

Willtel: Come out for the drive! I promise it will be a blast - but just a heads up I'll be in Atlanta to see my sister on the return trip to Houston - so before I head out for the trip we'll try to set something up.

Texas Turbo: I plan to take the wife up to Austin as she's never been up there - so yes we'll definately meet up. I'll PM you my number and we'll get it ironed out.

Thank you for the kind write up and honest opinions. To be honest myself there are several decisions I made that I started to regret until I saw them all come together...Its been very hard to endure through the project not really knowing how it would turn out but I knew it would be extreme one way or the other, love it or hate it...and gladly its turning out just as I had imagined it would.

Thank you so much for breaking your silence - its nice to know where this project stands in the grand scheme of things. Its an honor to be mentioned with BB2 & Matteo's IROC...those are legendary projects, and you're right on the tail - time did not allow a custom 935 wing but it will be on there in comming months for sure to get the look I originally wanted.

This car/project has stirred a lot of emotion in a lot of people and I'm so thrilled about that, it was such an unexpected side benifit. Its so amazing when so many people are passionate about the same thing, I think that's why the Porsche family is always so strong especially with the aircooled cars. I'm just happy I can be a part of that family.

If you can get ahold of Jeremy & the Stig I'll turn the keys over in a heart beat...I wonder what kind of lap times it would do on their test track....

[VZ935]

I sold the Coke 935 . I did not like the car at all... it was the fabcar tube frame car known as the 'Last 935" It just didn't have that real 935 feel ... I still have the yellow 935 and I replaced the Coke car with DESPERADO... super sweet K3 with great history ...

I am keeping my eyes peeled for a factory 934.5 or early 935 wing for you . I think the car looks incredible .. I do think the early factory wing will make the car look incredible squared

[Reaper930]

And as always I agree with you 100% on the factory wing, let me know if you come across anything!

Wow I'm glad you kept the yellow 935, and now with Desparado!!!! Wow, it just doesn't get any better than that!

[juicersr]

VZ, stunning cars. Must be cool to get up in the morning and have the agonizing decision of which one to drive!

As the owner of several past and present 935's, maybe you could shed some light on a running debate on the cockpit boost knob thread

Replica factory cockpit boost knob, etc

Do you still use the boost screw in vintage racing, and if so, when? What is your knowledge of the factory's recommendations to teams and drivers regarding it's use during that period? Finally, what is your opinion as to the roll of the knob on a MFI engine vs CIS? If you want to reply on that the above thread so as not to hijack this one, that would be fine.

[sand_man]

Finally got see/hear the clip, Reaper (Youtube is blocked at work)...sounds BAD AZZ! Of course you didn't need me to tell you that!

[spence88mph]

Same, I've played it about 10 times, it has a Ferrarieque howl at some rpms, very impressive. Looking forward to seeing it sit on it's own tyres.

[Craig 930 RS]

634 HP

WAY TO GO!!!

[petri]

For the Blackbird I can wait some stupenduous emotions and feelings for the driver Gabriel...
Like "mister 935" explained, the performance family of fast Porsches is completely different thing than just having fast 911.

Be aware of the change you will have:
By experience (with my "green afterburner") over 600rwhp / 600rwNm torque does feel like nothing before and soon most of the other cars you drive just don't do it to you any more, never.

This means, that if you want to buy any new car in the world with even near of such a capability, we are talking about Carrera GT, Koenigsegg CCX, Enzo etc. level cars and prices are enormously high. Therefore I would say, that by building a monster from 911 is the cheapest way (I didn't say cheap way) to create astonishing fast car.

Our GPS-results from last summer for the green (street legal car of course ):
0-100km/h 3,5sec.,
0-200km/h 8,7sec.,
0-300km/h 28,7 sec.
top speed 343km/h (gps-result in Germany Autobahn)
And some killing fast street tyre (Toyo R888 semi slicks) lap times...
And I've been driving with only 1,0 bar boost.

This brings me back to the subject, that this thread has been the most interesting and fascinating of all threads, since the beginning and the photoshop target aiming dream pics to the existing situation to be soon ready to shoot!

I'm really ready to help you with the arrangements to visit in the Nordschleife if you feel like coming back to the roots of the car like you are building .

[juicersr]

Originally Posted by petri

top speed 343km/h (gps-result in Germany Autobahn)

Dude, that thing is just plain bad-ass!!

[onboost]

Originally Posted by sand_man

(Youtube is blocked at work)...sounds BAD AZZ!

Because your azz is supposed to be working!!!

Ask me how I know!

P-

[sand_man]

Originally Posted by onboost

Because your azz is supposed to be working!!!

Ask me how I know!

P-

True dat!

[Reaper930]

Petri, awesome brother! I can't believe how quick your beast is, is traction difficult with your tires? What size rears are you running?

Impressive top speed as well (205mph), I'm hoping to match the factory's claim of 0-100kph below 3 seconds at 1.6 bar, but with your numbers at 1 bar so close to mine - I'm becoming more scared of my car everyday! I just can't wait to get behind the wheel...and yes I'll be sure to get in contact with you when the car is fully sorted to bring it to the 'Ring.

Beautiful pictures...now THAT is a flame thrower!

Spence & Sandman: Glad ya'll like it as much as I do, I can't help but play the file over and over on my ipod.

Craig: That's what I said! Just wait until I do runs at full 1.6 bar on the runway

[petri]

As I said: after green, most of the cars don't do it to me anymore .

Engine rpm 7500 in calculations (my engine revs more than 7800 rpm)
Final ratio 4,22
tire diameter 642mm
tire cir.km 0,00201588

1st gear ratio 2,25, top sp 95,5km/h, main shaft 36, lay shaft 16
2nd gear ratio 1,30, top sp 164,7km/h, main shaft 30, lay shaft 23
3rd gear ratio 0,89, top sp 240,6km/h, main shaft 25, lay shaft 28
4th gear ratio 0,63, top sp 343,8km/h, main shaft 20, lay shaft 32

gps numbers:
1st gear 7880rpm = 100+km/h, so for 0-100 I don't have to shift, basically the time is depending completely about the grip in start (and if drive shafts can handle it ). Litte bit too long for a perfect start, but I don't do Drag races, so every race has only one start. If not first after the start, it will be fixed soon after .

2nd gear 7840rpm = 170+km/h, long enough for certain curve combinations in Nordschleife like in Hatzenbach, Hoche Act, Whipperman... etc. No need to shift, you can accelerate between 80-170km/h with same gear, very good for left foot braking, no need to play with clutch.

3rd gear 7830rpm = 250+km/h, long enough for most of the fast curves in the Ring: long long very fast uphill from Bergwerk etc. excellent acceleration between 150-250km/h .

4th gear 7530rpm = 343+km/h, excellent in Autobahn to tease some new "so called" fast cars .

And yes: flames always when shifting up or down and revs are over 5000rpm .
Estimation is that 2-3m length of the flames will be slightly shortened next summer due to higher boost (1,3bar or 1,5bar is in sights, we will do brake dyno tests in spring)...

I have just one big turbo, and the engine is build to handle quite high revs as 930 engine usually with normal parts can't do, so when you, Gabriel, are considering your ratios, please note that your twinturbo spools earlier than mine, but it probably doesn't like revving over 7000rpm.
Because of long ratios and long torque and power area (between 3000-7800rpm) this car is very driveable and especially with complete racing suspension and aerodynamical aids it has an excellent grip. The rear needs still a FIA GT2 wing and diffusor (I've described in my Strosek thread) to keep rear better down in over 250km/h speeds. With rear wing and diffusor additions top speed will drop some, but the curve grip will be a lot better, especially in scary (and so enjoyable) fast corners.

[Reaper930]

Thanks for the info Petri - I looked at your photoshopped pictues and I do have to say your car is looking very, very sweet.

The numbers are insane, and yes I agree with you that in the end after I drive this car, no other will be able to excite me in such a way

Keep me posted on that diffuser! And I'll have to post my speeds per gear when I pick up the car

For now we have a minor update to the tune of starting the car, I asked Fred to set me up with a few different switches so that I could disable the electrical and fuel systems from either side of the column in case of a roll over or really bad accident where I couldn't get out of the car:

First switch is for battery power to ignition & overall power
Second switch is to activate fuel pumps 1 & 2
Third switch is for Fan 1 (also thermostaticaly controlled but I do have ability to override and turn on sooner)
Fourth switch is for Fan 2(also thermostaticaly controlled but I do have ability to override and turn on sooner)







Here's the GT3 in Alcantara with the Schroth Profi III 6 point harness with contoured thigh straps & camlock release mounted to the Brey Krause unit. Stock seat belt mounting/routing holes have been retailed in the rear panels in case I want to use stock style belts in future.