1989 RUF CTR Replica

1989 RUF CTR Replica

Author
Discussion

Mintbird

Original Poster:

600 posts

108 months

Friday 12th May 2023
quotequote all
Been a labour of love this. Neil Rainger in Liverpool did the bodywork - its a 89 3.2 With rain gutter delete, RUF CTR steel arch extentions, genuine ruf bumpers back and front - Integrated Rollcage -

Now getting ready for assembly. Engine will be a Richard Chamberlain Built Turbo with a K27-7200, 3.2 Carrera intake , on motec and with a B&B exhaust and headers.

Gearbox is a 964 turbo G50 5-speed sourced from a French 964 turbo around 110.000 KM

Power should be adequate, 400+


Can anyone guess the color wink










johnny senna

4,070 posts

279 months

Friday 12th May 2023
quotequote all
Fantastic!! Good idea for a custom build.
I was lucky enough to have a passenger ride in a real Yellowbird at Vmax around 17 years ago I think it was. (Thanks AdamT). What an incredible car that was. I had a 993 RS at the time which felt pedestrian in comparison.

SRT Hellcat

7,106 posts

224 months

Saturday 13th May 2023
quotequote all
Brilliant project. Look forward to seeing its completion. Richard is a lovely guy and very clever

IMI A

9,675 posts

208 months

Saturday 13th May 2023
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Bring it up to Elvington and run the Standing Mile when its finished. 10/10

jonny finance

939 posts

213 months

Saturday 13th May 2023
quotequote all
Very cool. Signal ??

Doofus

28,458 posts

180 months

Saturday 13th May 2023
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Is the rain gutter thing just for looks?

Mintbird

Original Poster:

600 posts

108 months

Saturday 13th May 2023
quotequote all
Signal 🧡 rain gutters are for top speed

Doofus

28,458 posts

180 months

Saturday 13th May 2023
quotequote all
Seriously?

Mintbird

Original Poster:

600 posts

108 months

Saturday 13th May 2023
quotequote all
yeah less drag

Doofus

28,458 posts

180 months

Saturday 13th May 2023
quotequote all
Blimey.

smile

Mintbird

Original Poster:

600 posts

108 months

Sunday 14th May 2023
quotequote all
Signal 🧡 rain gutters are for top speed

AW10

4,497 posts

256 months

Sunday 21st May 2023
quotequote all
On an aircooled 911 the raingutters actually go to the base of the A pillars which adds a fair bit of drag. https://rennlist.com/forums/964-forum/429634-ruf-a...

Cheib

23,759 posts

182 months

Sunday 21st May 2023
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Very nice Mr Mintbird biggrin The Black car with Green decals in one of the pics looks very nice too…..

Penguinracer

1,704 posts

213 months

Tuesday 23rd May 2023
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Why the choice of a K27-7200 rather than a Garrett, BW, IHI or Holset given that the original CTR was twin turbo in any case?

TB993tt

2,043 posts

248 months

Tuesday 23rd May 2023
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Mintbird said:
Signal ?? rain gutters are for top speed
Thought I'd chime in since people have heard of gutter delete but I don't think there has ever been any proper back to back testing on exactly how much more slippery the gutter delete makes these air cooled cars ?

So I used to vmax my 577hp 993 turbo which wore wider arches and 9" and 11" wheels, a turbo S front spoiler and turbo S rear spoiler it would just about hit 7000rpm at Bruntingthorpe at the braking marker as shown in the somewhat shakey video below, checkout the sunroof noise at over 180mph.

https://www.youtube.com/watch?v=75G3gk2-XMU

Following this I had a new roof put on without sunroof, the gutters deleted and a genuine 993 GT2 spooiler put on together with amore aggressive FVD "GT2 style" front lip.

I ran at Bruntigthorpe again expecting the car to be quite a bit slower since surely the front and rear spoilers would drag like hell prticulary the big GT2 piece with its gaping side air intakes......

I was wrong, the car hit the limiter at about 7100rpm with about 300 metres to go before the braking line it did it consitently many times I was pretty gobsmacked and concluded that the gutter delete made a massive difference to the aero, Ruf et al were spot on.

Pic in gutter delete mode wearing draggy spoilers

7 top photo sharing websites

AW10

4,497 posts

256 months

Tuesday 23rd May 2023
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This is tb993tt's old motor - https://www.youtube.com/watch?v=mL4gEtpj9pw

SRT Hellcat

7,106 posts

224 months

Wednesday 24th May 2023
quotequote all
TB993tt said:
Mintbird said:
Signal ?? rain gutters are for top speed
Thought I'd chime in since people have heard of gutter delete but I don't think there has ever been any proper back to back testing on exactly how much more slippery the gutter delete makes these air cooled cars ?

So I used to vmax my 577hp 993 turbo which wore wider arches and 9" and 11" wheels, a turbo S front spoiler and turbo S rear spoiler it would just about hit 7000rpm at Bruntingthorpe at the braking marker as shown in the somewhat shakey video below, checkout the sunroof noise at over 180mph.

https://www.youtube.com/watch?v=75G3gk2-XMU

Following this I had a new roof put on without sunroof, the gutters deleted and a genuine 993 GT2 spooiler put on together with amore aggressive FVD "GT2 style" front lip.

I ran at Bruntigthorpe again expecting the car to be quite a bit slower since surely the front and rear spoilers would drag like hell prticulary the big GT2 piece with its gaping side air intakes......

I was wrong, the car hit the limiter at about 7100rpm with about 300 metres to go before the braking line it did it consitently many times I was pretty gobsmacked and concluded that the gutter delete made a massive difference to the aero, Ruf et al were spot on.

Pic in gutter delete mode wearing draggy spoilers

7 top photo sharing websites
Out of interest, what where your speeds at VMax ?

Yellow491

3,045 posts

126 months

Wednesday 24th May 2023
quotequote all
SRT Hellcat said:
TB993tt said:
Mintbird said:
Signal ?? rain gutters are for top speed
Thought I'd chime in since people have heard of gutter delete but I don't think there has ever been any proper back to back testing on exactly how much more slippery the gutter delete makes these air cooled cars ?

So I used to vmax my 577hp 993 turbo which wore wider arches and 9" and 11" wheels, a turbo S front spoiler and turbo S rear spoiler it would just about hit 7000rpm at Bruntingthorpe at the braking marker as shown in the somewhat shakey video below, checkout the sunroof noise at over 180mph.

https://www.youtube.com/watch?v=75G3gk2-XMU

Following this I had a new roof put on without sunroof, the gutters deleted and a genuine 993 GT2 spooiler put on together with amore aggressive FVD "GT2 style" front lip.

I ran at Bruntigthorpe again expecting the car to be quite a bit slower since surely the front and rear spoilers would drag like hell prticulary the big GT2 piece with its gaping side air intakes......

I was wrong, the car hit the limiter at about 7100rpm with about 300 metres to go before the braking line it did it consitently many times I was pretty gobsmacked and concluded that the gutter delete made a massive difference to the aero, Ruf et al were spot on.

Pic in gutter delete mode wearing draggy spoilers

7 top photo sharing websites
Out of interest, what where your speeds at VMax ?
Genuine? Was the wind direction and speed the same,makes a massive difference.
I run gutter blanks up the screen of my hillclimber,cant say i noticed any increase through the speed trap over the years,even removing wing mirrors and wipers and taping up the front hood gaps etc.
But thinking of running the ruf fillets on the gt2 for terminal speeds.

TB993tt

2,043 posts

248 months

Wednesday 24th May 2023
quotequote all
SRT Hellcat said:
Out of interest, what where your speeds at VMax ?
From memory it was at ~200mph at the limiter but like I said I had to ease off ~300m before the beams as it was stuttering on the limiter.

TB993tt

2,043 posts

248 months

Wednesday 24th May 2023
quotequote all
Yellow491 said:
Genuine? Was the wind direction and speed the same,makes a massive difference.
I run gutter blanks up the screen of my hillclimber,cant say i noticed any increase through the speed trap over the years,even removing wing mirrors and wipers and taping up the front hood gaps etc.
But thinking of running the ruf fillets on the gt2 for terminal speeds.
A nice following wind can give you 5mph at Brunters, there was no wind on the day in question and there were many other previous days with gutters intact with various wind states and it never hit the limiter by the beams. Maybe the it's not just the front pillars but the whole revised roof shape which alters the aero drastically, I also had a plastic flush fit DP Motorsport window fitted and rear wiper delete which must have helped.

Some more pics from my archive smile


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Edited by TB993tt on Wednesday 24th May 12:15