Porsche 930 - Intercooler advice

[Pau]

Hi all,

Rebuilding my '88 Porsche 930 engine.

The current intercooler is (I believe) an Andial intercooler? It's used for sure. Maybe even 5 years old or even more? Got it when I bought the car.

I am looking at the long neck Turbokraft intercooler . Or maybe something different?

Question: Will the TurboKraft be a significant gain over a current Andial?


I've upgraded the turbo to a K27 and I am thinking of putting on a aftermarket exhaust system (maybe Fabspeed Maxflo) to remove the cat.

[nocarrier]

That Andial is a good intercooler.

[quattrorunner]

You should ask Chris at TK. My guess is that he'll tell you the Andial is good. Maybe even as good at stock boost levels as the one they make.

[scottrx7tt]

Both the andial and turbo Kraft units are top notch. I’m sure they flow great, but you could also do what I did, which is much cheaper. A Mitsubishi EVO aftermarket intercooler with a few modifications to the inlet, a few hard and soft hoses, and you have a really nice intercooler for not a lot of coin. Not sure how these stack up against both of the aforementioned units, because I’ve never owned one of those to compare to. Has no problems keeping my intake temps down.

[Pau]

Originally Posted by scottrx7tt

Both the andial and turbo Kraft units are top notch. I’m sure they flow great, but you could also do what I did, which is much cheaper. A Mitsubishi EVO aftermarket intercooler with a few modifications to the inlet, a few hard and soft hoses, and you have a really nice intercooler for not a lot of coin. Not sure how these stack up against both of the aforementioned units, because I’ve never owned one of those to compare to. Has no problems keeping my intake temps down.

That';s very interesting. Can you tell me what specific intercooler I would need? What year is your intercooler for?

can you upload some more pictures, what else do I need to adapt to the engine? Or will it fit relativity easily?

P

[Jeff NJ]

I also have an 88 930 and I have the TK long neck IC. Its a piece of art and certainly adds HP over stock, especially when matched with other upgrades. If I were in your shoes, I would probably keep the andial and get a Leask WUR and rarlyl8 headers and exhaust. Those two items, when combined with your K27 and andial IC are your best bang for the buck and work really well together.
I would still speak with Chris and see what the TK brings compared to the Andial short neck. With the other upgrades, maybe the TK is the better option? Maybe you will want to buy that too and sell the Andial to fund that purchase. They are highly sought after and should sell quickly for a pretty penny.

Let us know what Chris says.

[Rawknees'Turbo]

The OP has an early, Garretson (Andial put their name on some of those but did not make them) longneck intercooler - very nice, vintage piece that performs really well.

[Jeff NJ]

Originally Posted by Rawknees'Turbo

The OP has an early, Garretson (Andial put their name on some of those but did not make them) longneck intercooler - very nice, vintage piece that performs really well.

I thought it was shortneck for some reason. D'oh!!
Regardless, I would speak with Chris and see what he says. I don't think you can go wrong either way though.

[Rawknees'Turbo]

Originally Posted by Jeff NJ

I thought it was shortneck for some reason. D'oh!!
Regardless, I would speak with Chris and see what he says. I don't think you can go wrong either way though.

They look pretty much the same as the sort neck (different, and the same, as Paul's short "neck"! ), except for the intake manifold connection.

Also just for the sake of idle BSing, it is the welded spouts on the endtanks that shows it is an early unit (eventually the end tanks were fully cast pieces).

[Pau]

Thanks guys! So much information!

Yes I was thinking of replacing the headers on the long term for sure. I am still looking for the best combo for all that (exhaust, headers etc). I dont want to go too overboard but I do like less turbolag.

It's good to know that the Andial is a good IC for now! I will hit up Chris anyway. Don't feel like relocating the AC condenser, and I really need to keep the AC here in LA. Can't survive without in a black on black 930 during the summer.

Is the Leask WUR an easy install? Or does it need a lot of modifications?

Going a bit off topic here (and I am sure this has been discussed a million times) but Fabspeed vs Rarly8? I want to keep it looking original (one exhaust tip) and NOT too loud but a little louder then stock would be great.
I am looking at the Fabspeed Maxiflo now.

[Jeff NJ]

I didnt have to move the AC to install my TK IC, so that's not a concern.
The WUR is super simple to install, and comes with very detailed directions for tuning it. IMO, it's super important to have if you have the other upgrades. More power means more fuel used and you will go lean without it if you have headers, IC and turbo (I also have a 1.0 bar wastegate spring). If you are doing the other work, this is definitely in your wheelhouse. Do you have an AFR gauge? You should have one.

I have the Rarlyl8 headers and hooligan exhaust. It's quite loud, but he has other pipes that are not as loud. I am super happy I chose his exhaust over the fabspeed. Brian is here on the board and is very helpful when you have questions. He also sells the Leask WUR, I believe.

[timc]

Originally Posted by Jeff NJ

I would still speak with Chris and see what the TK brings compared to the Andial short neck. With the other upgrades, maybe the TK is the better option? Maybe you will want to buy that too and sell the Andial to fund that purchase. They are highly sought after and should sell quickly for a pretty penny.

Let us know what Chris says.

Pau: While your talking with TK (Chris), I'd also get his thoughts and opinions on headers, he's installed most every brand out there and has first hand experience. He's pretty objective, as he can buy and install pretty much any brand out there.

[M5guy]

I have a Fabspeed IC. When installing it I found that it slightly interfered with the engine lid. I had to remove a small bit of trim in the lid and all was good.

I saw Joe at a show and politely mentioned this. He told me my “engine was mounted too far back in the car”, an answer which had the whiff of BS about it.

[slow&rusty]

I like those Andial \ Garretsons as well, nicely constructed and solid units.

Well done @Pau for a really original solution as well!

[freesaints]

Andials are great. I actually sent my Andial IC to Chris @TK and he fabbed up the long neck conversion on that and sent it back. So that's an option as well.

[timc]

Charged side face area in square inches; Cubic inch mass

Stock 21.4; 258
Andial (Garretson) 72.6; 508
Ruf 53.5; 498
Kokeln 73.0; 642

[Jeff NJ]

Originally Posted by timc

Charged side face area in square inches; Cubic inch mass

Stock 21.4; 258
Andial (Garretson) 72.6; 508
Ruf 53.5; 498
Kokeln 73.0; 642

Do you know the TK half bay specs?

[timc]

Originally Posted by Jeff NJ

Do you know the TK half bay specs?

Sorry, I don't.

[dap930]

Pau,

Do you have the fiberglass shroud that came with the intercooler that mounts to the underside of the whale tail grill? That adds to the efficiency of the intercooler by forcing air through it.

Also, Since it looks like you need to replace the rubber sealing strip around the perimeter of the intercooler, Steele Rubber Products sells a rubber strip with a profile close to what was originally installed, P/N 70-3591-99.

[Mocker]

As freesaints mentioned, you can (as I did) convert your Andial intercooler to a long neck style and remove the stock BOV/diverter with a simpler, lighter replacement (Fabspeed sells a kit for their long neck intercooler). You'll need a good Porsche tech with welding skills, if you don't have them yourself, or you'll have to send it off.

Still cheaper than a new TK intercooler, and the Andials look cool.