The water to air intercooler doesn't tap into the existing cooling system. It is a separate system. Or at least it should be.

Hej Kjell!

Good work on water/air intercooler! You are one of few that pulled the installation, congratulations!

If installing EFI, I certainly recomend using som sort of BOV as it's function is to protect turbo from pressure surges and doesn't have much to do with fuel system. With other words, you need BOV regardless of which fuel system is being used.

If hunting for power, I recomend using Carrera plenum as it flows much better than OEM 930 plenum. It takes more place in engine compartment but as you are using water/air intercooler, place probably won't be the problem in this case. Note that Carrera plenum and 930 heads won't port-match and certain head work must be done. There is info and pictures about that in the forum archives.

OEM plenum is compromise so they could fit the intercooler. It flows badly and has uneven flows to cylinders.

For 550hp you would probably need to ditch KKK turbo (HF or not) and go Garrett, CIS will need to go as well.

The big radiator in front, is it oil cooler or cooler for water/air heat exchanger? If it's used for heat exchanger, it's fairly overbuilt. Heat that needs to be cooled by water/air exchanger isn't so big.

Good thing with water/air is that you can problably route a part of water return trough eventual Garrett turbocharger water-mantle an thus solve usual Garrett watercooling dilemma without extra hardware.

Best regars.

thanks Goran

The radiator in front is only for cooling the water, i did make it as big as i could because it's not negative to have it oversized. I see now that it didn't need to be as big as i made it. When i run with 0,8 bar boost over a longer period the water pipes does not almost get hot at all. I have not checked and logged the air temperature after the intercooler but i will. With overzized radiator, I also have possibility to add the clima condenser to the water loop later, but for now that must be a next year project.

Actually i was thinking to use a megasquirt for controlling the injection and the ignition. I have used this system before and it worked well (but that was on a 3.0 sc and not on a turbo engine).


kjell

I will post some pics soon of my air to water setup. It should be done in the next week or so. My cooler is a PT 2000 item. It is using a 5 gallon fuel cell in the front with a heat exchanger for the street. It is all ran with one inch lines. This is a common setup. The 03-04 cobras and shelbys come stock with this. I will run ice through mine at the track etc. Something most people fail to realize is that now on a turbo engine you can actually see it and work on it!

l congradulate you amigo,excellent work and beautiful car! l admit l underestimated your skills and dedication to upholding high standards of fabrication. You also have built a very unique car and l agree with others, take full advantage of your conversion with a Garrett turbo utilizing oil+water cooling. Excellent work!

My system is not completed, but it will be soon. The entire system uses 1.5 inch id line with a pump that flows 3800gph. This is a beast of a system! Here are a few pics.http://forums.pelicanparts.com/uploa...1218989481.jpg
http://forums.pelicanparts.com/uploa...1218989506.jpg
http://forums.pelicanparts.com/uploa...1218989534.jpg
http://forums.pelicanparts.com/uploa...1218989552.jpg
http://forums.pelicanparts.com/uploa...1218989577.jpg
http://forums.pelicanparts.com/uploa...1218989601.jpg

Hello

I'm want to go for a engine upgrade next winter, goal is 550hp:

- SC cam profile, getting the cams from www.drcamshafts.com, but right now he was out of stock for 930 billets. Do you know any other that have good cams?

- Upgrade to EFI & electronic igniction, i was thinking to make a megasquirt system, since i know a bit about this system. Is there any other system, that can be recommended?

- Garrett Turbo, where is it best to buy this?

- New head studs, I bought a kit here on pelican parts "Supertec Performance Cylinder Head Stud Kit"

- Maybe go for a carrera plenum, i have to check this

If you have any recommendations of suppliers or any recomended upgrades, I will be pleased to have your opinion.


bellow you can see some pictures of the car, me and a friend of me went for a ride. I called it "Porsche Summer Tour 2008" We drove from the west coast of Norway and through sweeden and up to the North of Norway. the trip was on total 6500 km done in 14 days.

http://forums.pelicanparts.com/uploa...1219073928.jpg
http://forums.pelicanparts.com/uploa...1219073948.jpg
http://forums.pelicanparts.com/uploa...1219073962.jpg
http://forums.pelicanparts.com/uploa...1219073973.jpg
http://forums.pelicanparts.com/uploa...1219073984.jpg

thats me, happy:)
http://forums.pelicanparts.com/uploa...1219073993.jpg
http://forums.pelicanparts.com/uploa...1219074003.jpg
http://forums.pelicanparts.com/uploa...1219074013.jpg
http://forums.pelicanparts.com/uploa...1219074024.jpg

Dude... That's very very cool. Thanks for sharing those incredible pics!

Oh yea, technical questions were in there too...
You may look into using the 3.6 plenum??

You can buy adapters to bolt the composite injector blocks to the early heads and the split in the middle of the plenum gives you countless options for creative induction...

You could place your intercooler in the front of the engine comp. near the shock towers and perhaps feed the engine straight into a forward facing throttle body...

Be patient on your cam purchase, you have plenty of work before you actually slide those new cams in place, Although you seem to work fast...

Hello

Where can a get a muffler like that, is it very noisy? I want the exhaust to be effective but at the same time i do not want too mutch noise.
I just experienced that it's might be a bit stress to drive 6500 km with earplugs, hearing protection and keeping your mouth shut at the same time to not go loco after 30 minutes.

I will go with the car to Nurburgring after the upgrade, it have always been in my dreams.

:)

The hunt for big hp goes on.

I received my 3.2 Carrera intake this week it did cost me 1450 USD.

I have problems finding the SC profile cam's for the 930 engine, do you know where to get'em?

www.drcamshafts.com was sold out :(


http://forums.pelicanparts.com/uploa...1221500070.jpg

Have you considered a 964 profile. You sacrifice a little low end for a better top-end.

Also, if you can get stock SC cams, you can machine an extension that bolts on the end of the cam that will drive the turbo sump pump. This is what the factory did on the early Special Wishes cars with the 330 HP power plants.
http://forums.pelicanparts.com/uploa...1221503008.jpg

If you have stat one to back this up, I'd love to see it.

I have a spare set of SC cams. They're used but no pitting. Cheap.

Also have a spare Megasquirt built up. I couldnt get the ignition circuit to function for me but if you've got some experience or patience you could get it working. I'm very happy with my Adaptronic ECU.

Nice ride!

John

I had a 3 liter SC once that changed head studs on, i remember that these camshafts had a big nut to lock the cogwheel. the engine i have here is a 1986 930 and i know that the locking system if different on these cams. Is it possible or easy to machine them in a workshop to fit my engine?

Concerning the Mega-squirt i have on the same engine that i did the head stud upgrade, i converted to EFI so i know a little bit about the system.
Have you put the components on the print board yourself or is this a prebuilt printboad? what type mega-squirt is this? Do you have the sensors that is needed for ignition control?

I will use the water cooled system on the car also after the engine upgrade, because it works just perfect. It is very over sized and that is not bad for the engine, i will also go for a water cooled Garrett turbo. hope to get the cylinder heads machined for twin plug.

I'm considering a cylinder and piston change, i see that there are 3,4 and 3,5 liter kit available with different compression ratio. what is the recommended nikasil cylinder kit to use and what compression ratio?


Thanks
Kjell R

Camgrinder can take stock 930 cams and regrind them to SC profile. Stock 930 cams should be easy to find. I even have a set.

You are right about the SC cams. There are two vintages; the early style cam nut and the later bolt style. There atr fewer of the later style bolt-type cams since they came out in 1981.

You have a few options for pistons/cylinders. There's the traditional Mahle( more expensive), Nickies with JE forged pistons and the EBS cylinders with steel liners and JE forged pistons. Do a search on the site and you'll find invaluable info on the subject.
Good luck on your project!

I spoke with a locale porsche specialist representative of RUF in Norway, he recomended me:

- Cyllinder and piston kit 964 turbo, 3,3 liter with 7,5 in compression ratio. These cyllinders have better colling than the original 930. He means that on high power the 3,4 and 3,5 liters cyllinders are weaker and might crack when running 1,3- 1,4 bar boost.

- Recomenden to use 3,2 liter carrera cyllinder heads, because they have bigger ports in/out. using twin plugg was not needed, they have build engines taking out 748 rwhp on this setup.

- Camshaft was recomended to use the carrera 3,2 type

Advantage using the cyllinder kit and cyllinder heads was that the metal gasket kit did fit bolt on.

They used this type of setup un the RUF CTR

Does anyone have any comments on this?

Kjell

Sounds good and makes sense.

Not sure how much the ignition timing would have to be retarded at that boost level and how much the retard will affect power.

Keep us posted.

Here is one of my previous posts. http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/431210-im-guessing-you-cant-bolt-newer-3-6-turbo-engine-older-930-chassis.html