Dimension of the 993TT intercooler cores?

[JMA-RUF]

Does anyone know off the top of their heads what the dimensions of the intercooler cores are in the 993TT IC?

Here's a pic:

[930gt-40r]

looks like maybe twin 10X11 cores or possibly 11X12s

[stup]

JBL930 from the UK has fitted 993tt engine in his 930 with these intercoolers,here is a link to the thread over in rennlist,even though not stated is the dimensions,,the pictures may give you some guide to the actual size of them inside a 911/930 engine bay!

http://forums.rennlist.com/rennforums/911-turbo-930-forum/401863-anyone-with-a-993tt-engine-in-a-930-a-5.html

[930gt-40r]

that twin conversion looks bad@ss-

[osiris2600]

how do these compare to aftermarket coolers for a tt application?

[JMA-RUF]

The OEM cores are too thin for my liking. 4" thick would be better.

12" x 10" x 4" for each core would be nicer

[JBL930]

The 993 intercooler is actually very good up to about 550bhp, the thicker FVD/Cargraphic style coolers have been proven to be worse, tested by RS Tuning on their engine dyno the stock intercooler is better.
The only proven intercoolers are ones offered with Secan cores, the ones from RS Tuning are around $30k, insane money. Surface area is the key with intercoolers, not thickness, and then the core manufacturer is key, Marston are pretty good i believe but Secan are the main players. You will be paying aerospace money though as that is where they come from.


Cheers for the compliment Kris

[JMA-RUF]

Jonathan, thanks for "tuning" in. Been reading your thread over on Rennlist! Your car is a beast! I love it!

I'm doing a TT conversion on my motor very soon and am potentially going with a pair of K16/16G's... should be a fun ride once done

[JBL930]

Hi James, i've been reading your threads too, you've certainly got your hands full. There is plenty of data with regards to 993 intercoolers over on Rennlist, this is a good thread to start http://forums.rennlist.com/rennforums/showthread.php?t=428101&referrerid=40678

[JMA-RUF]

Originally Posted by JBL930

you've certainly got your hands full.

Certainly do, but in a good way

[JBL930]

Absolutely, it's a lot of fun doing something unique, it just requires deep pockets and LOTS of patience. Your car will be nuts when it's done, i wish you all the best with it, if i can be of any help feel free to ask. I don't do the work myself though so my knowledge is limited

[JMA-RUF]

Thanks, Jonathan. I'll try and do most of the bolt on stuff myself... I'll just get the exhaust fabrication done by a good fabricator

[MyTurbo3.6]

2 1/2 x 10 1/2 x 10 1/2

[JMA-RUF]

Thanks

[930gt-40r]

Originally Posted by JBL930

Cheers for the compliment Kris

No worries, that car is nasty and if I were to ever say anything negative it would be out of sheer jealousy.

How nice is it to just turn a key, and have that much power with no drama, just a smooth running, barely stressed engine? I wish

Here in the states (Im not sure how they price those motors over there) they cost approximately 1 arm + 1 leg or $20K+. I have always wanted one, but could never afford one. Sorry to hijack

James- would you be opposed to water to air inter cooling? I got a friend who just got a nasty one done to his car.
And if not water to air, how about twin 4"x10"x10" spearco cores?

[JMA-RUF]

Originally Posted by 930gt-40r

James- would you be opposed to water to air inter cooling? I got a friend who just got a nasty one done to his car.
And if not water to air, how about twin 4"x10"x10" spearco cores?

Hey mate... I'm not a real fan of water to air intercooling in these cars. I prefer to keep it simple and I'm on a tight budget too

If you look at my other "teaser" thread, I've posted pics of the TT intercooler I'll be using temporarily (borrowed). If it works out to be OK, I'll probably get one similar made up, but with smoother flowing end tanks.

[JBL930]

Kris, yes they are not cheap here either, but looking at the big picture it's no more expensive than modding the hell out of your 3.3, and there are so many bolt on packages to get good power, plus there are so many fail safes built in, it just made sense to me.
If i had the chance to start over i would buy a non-sunroof 964 C2, ABS and coil overs in place, also no problem fitting a G50 or even a 6 speed box. The engine is a straight bolt in that chassis, it's slippery and light and would make one hell of a car, hindsight is a wonderful thing


James, sorry for buggering your thread. I would bet you that the intercooler you have will be less efficient than a stock 993tt one, people like RS Tuning in Germany have shelves full of intercoolers that didn't make the grade, it's not all about just finding some big fat cores and welding some end tanks on, it takes massive develpoment budgets and real world testing to improve on something Porsche manufacture. Do you have any info on that unit? What cores were used? Has it been tested back to back with a stock cooler? What were the comparative pre and post air temps?

[JMA-RUF]

It just uses tube & fin cores, not bar and plate. It'll be sufficient enough for 1,0bar boost.

As I said, when I'm ready to have an aftermarket one designed as a permanent solution, I'll probably build a similar one to the Protomotive units. They are extremely efficient.

[JBL930]

Originally Posted by JMA-RUF

It just uses tube & fin cores, not bar and plate. It'll be sufficient enough for 1,0bar boost.

As I said, when I'm ready to have an aftermarket one designed as a permanent solution, I'll probably build a similar one to the Protomotive units. They are extremely efficient.

I've seen some of those Protomotive ones, they look great, just like the original Secan GT2 Evo ones from the race cars. I've no doubt the Protomotive ones will be top draw, do you have any idea what cores they use? Also, how much do Protomotive charge for one of those intercoolers? I'm just curious

[Reaper930]

Mine's a Protomotive unit, the cores aren't near as tight as the Secan cores though the end tanks are very nice and to my understanding support a nice flow. This cooler is rated to an ungodly high HP value. Last time I checked they go for about $2,500: