Air cooled delight.

[David W.]

Enjoy
https://youtu.be/7DabL3zBXOo

[Slippydiff]

Great video. Actually it's not, it's a GREAT video. Many thanks for posting

[browngt3]

That's how a car should sound!

[paua]

"Rides like a cement mixer". Owner seems like an ok chap.

[Steve Rance]

Thank you for posting.

There is something very special about a hot rodded air cooled 911

[SRT Hellcat]

Great video and a lovely story. One mans passion etc.

[RSVP911]

I’d like to complain in the strongest terms about this type of irresponsible online behaviour - these types of threads cause all sorts of unwarranted and fanciful thoughts and end up being extremely costly to a weak minded reader such as myself.

I find myself constantly be pulled back into a “project” .The sane part of me knows I may as well simply burn my money, it’s far more efficient and it keeps you warm. However, I know at some point, if I can’t show some self restraint, I’m going to get sucked in and my beautiful ‘73 RS (ish) will get somewhat “pimped up”.

It’s already going off to CG next week for some stage one suspension fettling.

The question is do I also mess with the engine - the car has a genuine ‘73 RS engine and as such, I’ve resisted messing with it in the past and obviously doing nothing with it has to be the most sensible thing to do !

Please tell me to leave it well alone !

Thanks

[Robbo66]

Don't you ever listen....Henry and myself refuse to advise you any longer

[RSVP911]

Robbo66 said:

Don't you ever listen....Henry and myself refuse to advise you any longer

Does that mean I should or shouldn’t - I’m confused ?

To be completely honest, it’s 100% your fault - I was absolutely fine until you bought that car !

[Cheib]

RSVP911 said:

The question is do I also mess with the engine - the car has a genuine ‘73 RS engine and as such, I’ve resisted messing with it in the past and obviously doing nothing with it has to be the most sensible thing to do !

If your RS has got an original matching numbers engine in it you clearly should take the original engine out to preserve it (and the value of your car)....and thus could justify the expense of getting something rather more fettled built for your RS

[RSVP911]

Cheib said:

If your RS has got an original matching numbers engine in it you clearly should take the original engine out to preserve it (and the value of your car)....and thus could justify the expense of getting something rather more fettled built for your RS

This is the beauty of my RS - it’s not a matching numbers car that I’d worry about driving; it’s built on a 83 SC chassis, but has a proper 73 RS engine and visually looks exactly like the real thing and as such, I never worry about driving it and use it when time permits. I’m having various things done to it at CG to “improve” the handling, but I think I’m kind of “stuck” engine wise as it seems wrong to mess with it; not that it isn’t a lovely engine, it is ; it’s a really free reving engine that sounds fabulous - I think I may have just answered my own question

The alternate view is it’s already “not real” and as such, messing with the engine doesn’t really matter.

I guess I was hoping someone on here with better technical engineering knowledge than I,(that will be about everyone on here) could tell me what I could do to the engine to make it more, we’ll , “more”

Edited by RSVP911 on Monday 15th April 16:24

[Yellow491]

RSVP911 said:

Cheib said:

If your RS has got an original matching numbers engine in it you clearly should take the original engine out to preserve it (and the value of your car)....and thus could justify the expense of getting something rather more fettled built for your RS

This is the beauty of my RS - it’s not a matching numbers car that I’d worry about driving; it’s built on a 83 SC chassis, but has a proper 73 RS engine and visually looks exactly like the real thing and as such, I never worry about driving it and use it when time permits. I’m having various things done to it at CG to “improve” the handling, but I think I’m kind of “stuck” engine wise as it seems wrong to mess with it; not that it isn’t a lovely engine, it is ; it’s a really free reving engine that sounds fabulous - I think I may have just answered my own question

Edited by RSVP911 on Monday 15th April 16:14

Ffs just get on and use it,for speed and response add lightness,just say to chris at cg that you want it to handle as good as my car!;)

[RSVP911]

Yellow491 said:

Ffs just get on and use it,for speed and response add lightness,just say to chris at cg that you want it to handle as good as my car!;)

Thanks, that’s really helpful - I’ll let him know - if it isn’t as fast / agile as your car after 3-4 days there I’ll let you know so we can swap if you like

Edited by RSVP911 on Monday 15th April 16:37

[Slippydiff]

Good afternoon Sir Richard. I hope this post finds you well ?
With Rob on this, BUT... I’ll give you one final piece of advice : Let me drive it, then donate it to me, thereafter no further advice will be required on your part. All very simple and straightforward really.

Failing that, follow Rob’s and Yellow’s lead, and convert it into an all singing all dancing ST rep. 2.5 short strokes motor with high flutter by’s and big arches with humongous Fuchs and acres of rubber.

Invoice to follow

[RSVP911]

Slippydiff said:

Good afternoon Sir Richard. I hope this post finds you well ?
With Rob on this, BUT... I’ll give you one final piece of advice : Let me drive it, then donate it to me, thereafter no further advice will be required on your part. All very simple and straightforward really.

Failing that, follow Rob’s and Yellow’s lead, and convert it into an all singing all dancing ST rep. 2.5 short strokes motor with high flutter by’s and big arches with humongous Fuchs and acres of rubber.

Invoice to follow

I couldn’t think of a nicer chap to give it to - leave it with me to ponder.

I can’t comment on anything else that you said as it was written in a strange technical language that I don’t understand - however if I was guessing were you thinking something like :

The 2.5 short stroke
Cams: 906 (center lube) with mfi
Crank: 66mm
P&C: Mahle 89mm Nikasil providing 10.3 CR
Rods: Nitrided steel S - Ti rods not homologated for ST
Heads: twin plug; 46mm intakes; 40mm exhausts; 41mm i&e ports
Induction: 2R High Butterfly with Bosch mechanical fi pump
Distributor: Marelli twin spark with 30mm neck
Case: mag
Chain box covers: mag/center lube
Oil cooling: case mounted cooler replaced by 906 grenade filter; bi lateral fender mount coolers
Fan: small 225mm 906 style fan

[Slippydiff]

RSVP911 said:

I couldn’t think of a nicer chap to give it to - leave it with me to ponder.

I can’t comment on anything else that you said as it was written in a strange technical language that I don’t understand - however if I was guessing were you thinking something like :

The 2.5 short stroke
Cams: 906 (center lube) with mfi
Crank: 66mm
P&C: Mahle 89mm Nikasil providing 10.3 CR
Rods: Nitrided steel S - Ti rods not homologated for ST
Heads: twin plug; 46mm intakes; 40mm exhausts; 41mm i&e ports
Induction: 2R High Butterfly with Bosch mechanical fi pump
Distributor: Marelli twin spark with 30mm neck
Case: mag
Chain box covers: mag/center lube
Oil cooling: case mounted cooler replaced by 906 grenade filter; bi lateral fender mount coolers
Fan: small 225mm 906 style fan

Help me out here Rich, tell me more about the "P&C Mahle 89mm Nikasil providing 10.3 CR", and whilst you're at it, any further info on the "906 (center lube) with mfi" would be helpful tool.
And just thinking about this further, any elucidation on the "case mounted cooler replaced by 906 grenade filter; bi lateral fender mount coolers" along with the "small 225mm 906 style fan" would be helpful also.

Over to you chap ....

Edit to add, you'd best get your wallet out me old china. This won't be a cheap day out :

https://www.excellence-mag.com/issues/251/articles...

https://www.excellence-mag.com/issues/202/articles...

https://www.youtube.com/watch?v=t_Ejk-ZrNjA

Over to Paul H to help you empty your wallet

Edited by Slippydiff on Monday 15th April 19:07

[RSVP911]

Slippydiff said:

RSVP911 said:

I couldn’t think of a nicer chap to give it to - leave it with me to ponder.

I can’t comment on anything else that you said as it was written in a strange technical language that I don’t understand - however if I was guessing were you thinking something like :

The 2.5 short stroke
Cams: 906 (center lube) with mfi
Crank: 66mm
P&C: Mahle 89mm Nikasil providing 10.3 CR
Rods: Nitrided steel S - Ti rods not homologated for ST
Heads: twin plug; 46mm intakes; 40mm exhausts; 41mm i&e ports
Induction: 2R High Butterfly with Bosch mechanical fi pump
Distributor: Marelli twin spark with 30mm neck
Case: mag
Chain box covers: mag/center lube
Oil cooling: case mounted cooler replaced by 906 grenade filter; bi lateral fender mount coolers
Fan: small 225mm 906 style fan

Help me out here Rich, tell me more about the "P&C Mahle 89mm Nikasil providing 10.3 CR", and whilst you're at it, any further info on the "906 (center lube) with mfi" would be helpful tool.
And just thinking about this further, any elucidation on the "case mounted cooler replaced by 906 grenade filter; bi lateral fender mount coolers" along with the "small 225mm 906 style fan" would be helpful also.

Over to you chap ....

Edit to add, you'd best get your wallet out me old china. This won't be a cheap day out :

https://www.excellence-mag.com/issues/251/articles...

https://www.excellence-mag.com/issues/202/articles...

https://www.youtube.com/watch?v=t_Ejk-ZrNjA

Over to Paul H to help you empty your wallet

Edited by Slippydiff on Monday 15th April 19:07

Very simple really , H : Googled 991 ST engine and cut and pasted the first thing I read - it made absolutely no sense to me whatsoever : can’t believe you saw through it !

Thanks for the links - looks like I better get reading - keep well , R

[Yellow491]

Try starting with a 100k£.
No point you having a small fan if you dont cream the engine,the small fan is only for drivers prepared to keep the fan spinning above 7000rpm!,so you could save a couple of grand there.

I am building a 901/20 spec engine at the moment for my 904 project,shift light will be at 8200.
Nothing wrong with a 2.7rs engine in a light car.

[Cheib]

RSVP911 said:

Googled 991 ST engine and cut and pasted the first thing I read - it made absolutely no sense to me whatsover

991 ST you say ?!

[Slippydiff]

Cheib said:

RSVP911 said:

Googled 991 ST engine and cut and pasted the first thing I read - it made absolutely no sense to me whatsover

991 ST you say ?!

Well having done the R and T, I wouldn’t put it past the marketing dept at Stuttgart to re-invent the ST too ...