I would make a special trip to the track just to SEE this awsome machine!

Chris and Matteo

The IROC style and '74 RSR front bumpers had the large holes for cooling the front brakes without any fender or hood venting. It worked OK for the factory back then. I would not do anything to the fenders or hood that would destroy the period appearance of what is going to be a very special car.

I have to agree with Tom.

Yes I agree. We are talking about the oil cooling flow. The RSRs had a diffuser that would channel the air flow under the car.
We are ducting that flow through the front trunk to the wheel wells.

The best solution would be to have a vent in the hood.

I'll post a pic of what I am talking about as soon as I find it!

Matteo ,

Just found this thread and I feel so much better. It is nice to know there is someone else out there as sick as I am :) ! As a comparison here is some info on the normally aspirated 911 I had. The cage was almost identical to my GT1R race car.. all the ERP stuff, camber boxes.. all that good stuff. I did have a full carbon 993 wide body on the car . That being said it came in at under 2200lbs. with 10 gallons in the tank . Chassis wise , you can't do any better I believe. But I had a mildly worked 3.2 liter motor. Bigger trottle body, SCarGo Racing headers and some mild work. I am sure no more than 300hp at the wheels..with 315's in the rear if I stood on this thing it would haze the rear tires in 2nd gear. I completley humiliated my friend in his 993 twin turbo..so with your Motec,3.9 with Jenvey's and all that great stuff all I can say is cinch up and wear a diaper your first time out :) As a side note Excellence did a 8 page spread on this car and the author David Colman said soemthig to the effect that it was the most fun he ever had in a 911...that being said I think you are raising the bar and will be more than pleased with your end results. Congrats !

Wha-ha wowza.
Makes my 930 coplete engine bulid look like a cheap porposition!
Very cool.

we need more pics...


one of the really interesting cars -- great work!!

The best oil cooler / cooling setup was used on the 993 RSR. Two stock 964/993 oil coolers turned perpendicular to the car direction/air flow with air ducted from the front bumper cutout directly to the cooler and then dumped out into the fender. This will keep an RSR 3.8 sprint motor at 177 degrees during an enduro at 95 degree ambient. There is less then 15 degree spike when the car is not moving and there are no fans. Air flow must be directed without opportunity to get around the cooler.

http://forums.pelicanparts.com/uploa...1149976292.jpg

Leaving the tub aside for a second (I might try and go to the shop and take more pics as it leaves for the powder coating) I thought I'd post some pics of the motor coming together (well as it is being built by Dr Timmins).


The crank

http://forums.pelicanparts.com/uploa...1150128790.jpg


http://forums.pelicanparts.com/uploa...1150128903.jpg


http://forums.pelicanparts.com/uploa...1150128969.jpg


With the cylinders


http://forums.pelicanparts.com/uploa...1150129416.jpg

http://forums.pelicanparts.com/uploa...1150129442.jpg

The heads

http://forums.pelicanparts.com/uploa...1150129503.jpg


And the induction :D



http://forums.pelicanparts.com/uploa...1150129603.jpg


http://forums.pelicanparts.com/uploa...1150129784.jpg


The fan is missing as I am going to have it powder coated Mexico Blue.... I know I know... it's for the poser in me ;)

looking very good!

Tell Steve he needs a few more fasteners on those cam housings :)

Looks sweet!

Cams are not in yet... there was a little issue with the ones we ordered.

Dr Timmins put it together for my benefit, so that I could "see" it. He's a great guy from that point of view.

Steve is very excited about this project as well, I'm sure. If I can get down there before it ships I would love to take a look.

Well, that last post didn't work. Absolutely incredible looking engine. Can't wait for the fire up and dyno.

I am driving up the car with the 3.6 when the chassis is done.

Steve will install the engine and perform the in-car tune up.

I plan (and I am sure I will need to add at least 1 month to this) to drive the car up in the 1-2 week of August. In fact there is a 3day event at VIR on the 4-5-6th. Hopefully I can attend that and then continue Norh and deliver the car to Steve.

You are more than welcome to check it all out when it's there...

Sounds like something to put on the calendar! I'll keep my eye on the progress, this is a great project.

Maybe he can use some of the blue tie-down nuts he put on the head studs. Two per barrel would do just fine since they are light ;)

If you guys don't stop he's going to make me take the pics off ;)

So be nice or I'll tell Prof Timmins!

Tom

I found the pic that I was thinking about.

Now disregard the fact that this is an pre-bumper car but the concept is going to be the same.

It looks like this car has the front oil cooler with a sort of RSR panel that channels the air-flow up inside the hood.

Their solution (very similar to what we'll do) is to use 4 ducts to dissipate the airflow inside the wheel well.

For the brakes we'll use the openings in the IROC front bumper connected to the proper ducts. I have the brake plates already. The only question is to whether we are going to run the ducts under the car or inside the front trunk.

The idea of opening up the front hood is as a last resort if we do not obtain good cooling this way.

I hope it is more clear now


http://forums.pelicanparts.com/uploa...1150227783.jpg

This is truly the ultimate 911 build I have ever seen......

Hey buddy, thanks!

How is the 930 rebuild going?

Rebuild going good - dscovery of more stuff gone bad.....grr.

Matteo, I have the same oil cooling solution on my 930. The main differences are on mine, the box on the inside of the trunk seems to be a little bit larger (more square and longer) and I use two hoses (instead of four) of a larger diameter. That along with a fairly powerful fan never have given me any temperature problems even while sitting in traffic here in Las Vegas

Jordi

what cooler are u using? what dimensions? How did u mount the fans?
We'll use a 911 fuel safe cell (which is smaller than the one in the pic) so I think I will be able to get away with four ducts...

I'm a big fan of the cooling the PO installed in the 930:

2 of these, one in each fender:
http://forums.pelicanparts.com/uploa...1150231247.jpg

One of these in the nose:
http://forums.pelicanparts.com/uploa...1150231308.jpg

Zero oil temp issues.

Nice... so what do u have in the middle?

Also I had problem in clearing the stock carrera cooler in the fender with my right tire (275/40-17).
What tires are u using upfront? Did the PO fab special mountings for the cooler?

I dont exactly recall - something RUF sized - Setrab maybe? Just a guess.

I am also using 275/17s up front, no cooler clearance issues.
It's all custom up front as far as I know. They did a great job.

Matteo

With the front cooling set-up you show, there should be no reason to vent the hood or fenders. Just make sure that you select a fuel cell that allows enough room for the vent hoses. With the special Fuel Safe cell I used in my RSR, there is no room for the vent hoses to the wheel wells.

http://forums.pelicanparts.com/uploa...1150277222.jpg

Tom is yours the 17 gallon one or the 27?

Mine looks very much like yours. I went for the 17. Not running the 24h of Daytona anytime soon ;)

I hope to have enough room for the hoses....

Matteo

Mine is the 17 gal cell. Make sure you fit the cell before making final decisions about venting to the wheel wells. I think you need to enter the wheel wells in the area where the battery boxes were located on the early cars.

If you'd like a better shots of my fuel install, let me know and I'll post some new pics.

tom- we'd all love to see more pics of any aspect of your build - great car, nice quality build!

+1

OK...Here's some pics of the 17 Gal Fuel Safe in my '73 RSR Clone.
http://forums.pelicanparts.com/uploa...1150416217.jpg
http://forums.pelicanparts.com/uploa...1150416255.jpg
http://forums.pelicanparts.com/uploa...1150416294.jpg
http://forums.pelicanparts.com/uploa...1150416321.jpg

Not a lot of room for venting to the wheel wells. I decided to go the RSR factory route and use the RSR relief panel to vent the cooler exhaust under the car.
http://forums.pelicanparts.com/uploa...1150416496.jpg
http://forums.pelicanparts.com/uploa...1150416542.jpg
http://forums.pelicanparts.com/uploa...1150416582.jpg

So far...So good. I'm running a 3.0 RSR spec twin plug with 285 RWHP. I've never seen oil temps go above 180 deg. Next weekend at Watkins Glen will be a good test of the the cooling system.

Tom it's always great to see pics of your car. You can see how every little detail has been thought through properly....

I have the same exact fuel cell as yours. I have noticed though how the tubs differ in the front section. It seems like we might have just enough room.

Keith here is the expert.

BTW what cooler are you using?

Matteo

Thanks for the compliments on my RSR project.

My cooler is a Setrab 150 that I bought from Chuck at Elephant Racing.

We are all enjoying the updates on your build. Keep up the pics and progress. We look forward to them.

Some work needed to be done to fix the sheet metal in the engine compartment on the right hand side...

So Keith thought it would be a good idea to move the oil tank fwd in front of the rear axle (ala 993).

Some pics of the job...

http://forums.pelicanparts.com/uploa...1150806800.jpg

http://forums.pelicanparts.com/uploa...1150806724.jpg

http://forums.pelicanparts.com/uploa...1150806756.jpg

http://forums.pelicanparts.com/uploa...1150806767.jpg

http://forums.pelicanparts.com/uploa...1150806782.jpg

Also Keith and Aaron sent me some cool pics (I think) of the car during the floor-swap



http://forums.pelicanparts.com/uploa...1150807279.jpg

http://forums.pelicanparts.com/uploa...1150807295.jpg


http://forums.pelicanparts.com/uploa...1150807318.jpg

http://forums.pelicanparts.com/uploa...1150807337.jpg

http://forums.pelicanparts.com/uploa...1150807351.jpg

wow almost nothing un-touched...great thread!

Keep the detail on the 964/993 oil tank coming - that is on my upgrade list :)