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spence88mph's Avatar
 
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info on the RUF CTR engine???

So the engine was based on an 87 Carrera, bored out to 98mm, upgraded computer and 2 KKKs but what else? Was the bottom end different? cams? valves? heads? does anyone know, is there a resource for this anywhere. I tried a search but didn't find anything.
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Old 04-08-2007, 11:49 PM
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Bruce Anderson's "Porsche 911 Performance Handbook" speaks briefly of the build on page 160. It sound like most of the gains came from the time spent on engine management along with the mechanical mods you mentioned. He used his own intake, similar to the stock one with larger volume and his own cams.
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Old 04-09-2007, 04:09 AM
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I would have thought it would have had a lower compression ratio & better hardware holding it all together, something like ARP on at least the rod bolts.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

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Old 04-09-2007, 02:23 PM
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RUF used their own titanium rods, didn't they?

Also, RUF limited boost on the CTR to 1.1bar, but had a manual boost controller, which was adjustable to 1.2bar I believe.

The motor ran twin K26's and the Motronics was a modified ECU, which used a speed density / MAP sensor. I heard it was the same ECU as the 962 Motronics unit, but Alois recalibrated it for the 3.4.

The engine was single plugged and had two intercoolers mounted to the sides of the engine bay.
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Last edited by WydRyd; 04-10-2007 at 04:23 PM..
Old 04-09-2007, 05:32 PM
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Different rods, crank, and dual injector rails per cylinder bank. Of course there is also the 3.4 pistons and sleeves, the intake is really a modified Carrera intake with as mentioned above a total of 4 large fuel rails. Technology has come a long way since YB was built, there are a few monsters running around that would beat it some guys just chose to be private about it rather than be flameed for making claims about such a storied car.
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Old 04-10-2007, 04:20 PM
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Yeh, lots more powerful cars running around these days, but back in the day, the CTR's power was considered monstrous. There were other "tuners" around at that time who most probably had more powerful cars, but I guess RUF was at the right place at the right time. The CTR was really THE CAR that launched RUF as a marque.
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Old 04-10-2007, 04:26 PM
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STILL a beast..

3.4 liter
7.5 CR
Bosch Motronic 1.2
496 hp / 409 lb ft

Yellow Bird was invited back for another super car test not too long ago where it competed against more current cars. I think it still finished in the top 5?
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Old 04-10-2007, 06:49 PM
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Ruf builds some of the best looking and exceedingly fast machines but Alois prices are outrageous.
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Old 04-10-2007, 06:54 PM
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It finished well considering the cars and the motorcycle that were present.
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87 930 Motec EFI M600 G50/50 TurboKrafted Hell Hound.
Jeep, Chrysler, Dodge, Ram, SRT & AEV Dealer pm me for your Mopar needs.
"the 930 is THE CAR that started my PORSCHE love affair..." Magnus Walker
Old 04-10-2007, 06:55 PM
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Forgot the year and the competition? Do you recall?
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Old 04-10-2007, 07:10 PM
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The CTR was based on the 1987 Carrera. The article was called "Worlds Fastest Cars" in the Road & Track magazine in 1987

Here's an interesting article!
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'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition

Last edited by WydRyd; 04-10-2007 at 09:46 PM..
Old 04-10-2007, 08:48 PM
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I believe that was the first test. It was invited back later to compete again in a more recent test. I will see if I can find it.
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Old 04-11-2007, 06:13 AM
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This is it.

http://www.roadandtrack.com/article.asp?section_id=31&article_id=2572
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Old 04-11-2007, 06:27 AM
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Quote:
Originally posted by ELZ's930
This is it.

[http://]http://www.roadandtrack.com/article.asp?section_id=31&article_id=2572
http://www.roadandtrack.com/article.asp?section_id=31&article_id=2572
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 04-11-2007, 11:48 AM
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wow!! very impressive by that number. can not imagine CTR is a 20 years old car.
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Old 04-12-2007, 11:06 AM
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Porsche 911 3.2 Carrera The last of the Evolution by Tony Corlett. Has a whole chapter on the CTR.

Check out wikipedia.org then search Ruf CTR. Great article, tons of info, My 14 year old son wrote it himself!!!!!
Old 04-14-2007, 04:31 PM
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That is a profound statment; the yellow bird is used in comparisons even 20 years later and then holds its own in the middle of the pack. Amazing! It beat cars like the Ford GT and obliterated the Lambo murcielago
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Old 04-14-2007, 06:17 PM
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Still very competitive.... even today. Not much tops it, I remember Alois drove the YB to the competition, everything else showed up in a trailer.
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Old 04-16-2007, 07:44 AM
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excellence just did a article on this car a few months back,i think it was on the cover.
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Old 04-19-2007, 05:12 PM
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The car is just about as fast as todays 997 turbo made in the late 80's. 0-60 isnt as fast but 1/4 mile is close to the 997.
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Old 04-19-2007, 06:38 PM
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