JBL930

Sorry to bother you guys but I was wondering if someone could give me some information, I thought I’d mention that I have been a paying member since I first joined (1996) so no idea why it still says “user” under my name? Anyway, I’ve recently embarked on a bit of a mission which involves sticking a 1996 993tt engine in my 930, since I purchased the engine I have found out that it has had some mods done, this could be good and also could be bad I guess, so I’m doing some research on what bits I’ve got.

It started with me noticing it had “S” tips, further investigation shows it has K24’s fitted, the numbers on the turbos read as this K24 HE 5081312 00003 5324 988 7003, can anyone enlighten me on whether they are the “450” Porsche units or something other. The ECU has this number 993 618 611 00, any insight on whether this is the standard 96 euro ECU or an after-market unit would also be great.

On further inspection it seams that a HKS EVC boost control unit has been fitted, how do these things work? Do they work in conjunction with the ECU or are they a fixed boost control? I’m new to the 993tt engine so forgive me for being a bit green, I know my car will be a bit of a chopped up Frankenstein but I suppose I’ll be spending a bit more time on this board now I have the same engine as you chaps. All advise, info etc greatly appreciated

Jonathan (JBL930)

WHB Porsche

Sorry I can't help too much, but you should post the Bosch, not Porsche, part number for the ECU. That is how they are identified (between immobilizer/single/dual chip).

JBL930

WHB, rapid response! I don't have the engine here but does this pic help? Hopefully it isn't as battered on the inside as it looks on the out!



and the only part of the EBC i have a pic of is this

WHB Porsche

I can't quite decipher the part number above the barcode on the ECU. You should take a better pic when you get it. There were two versions of ECU ('96/'97 on), most likely you have a '97 if you believe it is tuned. See this thread for a bit more info: https://rennlist.com/forums/showthre...light=1997+dmu

Kevin

Jonathan, one thing that I noticed on the core engine that purchased. The entire driver side turbocharger/cat/heat exhanger assy was damaged/bent. That's alot of $$$ to get fixed. Hopefully you negotiated that in the purchase price.

JBL930

Thanks for the link Charlie, i've just been over to have a look at the engine and take another pic of the ECU, the last digit is scratched off so i hope it can still be identified? I'm glad it isn't me trying to install the thing, it's a bit more complicated than the 930 lump!
Here's the pic, any insight would be great



Hi Kevin, it does look quite bad in that area, after having a quick look today it doesn't look like it's damaged the turbo, it's bent back, but the heater box part underneath looks straight, so hopefully it's only slightly bent the section from the collector part to the turbo, my mechanic seams hopeful that we can straighten that part out and save the headers. The CAT and muffler are toast, to be honest I'm almost certainly going to loose the CATS anyway and most likely the mufflers too.

Here are a couple of pics, the first one showing the good for comparison







I did ring the salvage yard with regards to the damage and we came to a deal where they are sending me the 993 oil tank and lines which we are hoping to use instead of the 930 one, hopefully it will work? As long as the engine is healthy with good leakdown numbers and the turbos are in good shape etc i don't think i got a bad deal. How much is the "450 BHP" kit from porsche fitted? I bet it isn't cheap! i would have wanted K24's or Hybrid K16's at some point so it's saved me a pile of cash!
Kevin, as you're the turbo man can you shed light on the turbos I have, are they the ones Porsche would have fitted with the kit or are they a different offering, Cargraphic or something? Here are the numbers

K24 HE 5081312 00003 5324 988 7003

Thanks for the help chaps

JBL930

Looks like i'm starting to get somewhere with my research on the ECU. It looks like it is a tuned one, there is lots of info on this post (which took forever to find) LINK
It seams that the standard ECU's go as follows, this is a direct quote from Steve Weiner

"If it reads 0.261.203.378 or 0.261.203.758, this is the 2-chip box and cannot be done.
If it reads 0.261.203.376 or 0.261.203.377 then its the single chip ECU that can be reprogrammed."

My box reads 0.261.204.37? (with the Porsche part number 993.618.611.00) so it is either a USA-spec single chip box that can be chipped, or more likely (as it's come out of a UK spec car) the same or similar one that Stummel has which is Euro 430PS model, Steve goes on to say that with the K24's it can be re-programmed to 480 HP, looks promising don't you think?

I'm obviously guessing that the missing digit is a 7, i very much doubt that K24's have been fitted along with "S" tips and it has an untouched 96 model ECU, or is that wishful thinking?

Barney1

Yes the 377 ecu is the one you need..I just went through this..That looks to be ok since the ecu says Cartronic. The 1996 dual chip ecu did not read Cartronic....

Kevin

You have standard K24's on your engine. However, the drivers turbo is wacked.. I can see it in the pictures.. If you take the rear cat off, you will find most likely than not that the turbine wheel doesn't turn. I have spare K24 wheels in stock..

I also hope that the CAT pipe didn't get crushed into your chain housing. If I was you, I'd start to remove all the damaged components. BTW the sheet metal aren't cheap and take awhile to order.

JBL930

Cheers Kevin, I'll speak to the garage on Monday and see if he can strip off the damaged bits and give me a list of what's needed, they weren't going to start on it for a week or so but it would definitely help if i knew what bits need ordering now.
How can you tell the turbo is shot from the pics? I assume with you saying it might need a new wheel means that it's repairable and not a complete new turbo?
They said the engine was running when it came in so hopefully it hasn't smashed into anything really serious, i'm assuming the chain you mention is the cam chain? If it had damaged that would it still run?

eclou

A friend of mine kissed the wall on the track with a 993tt which pushed the turbos over as on your photos. It caused a hairline crack on the center section near the oil line boss. Look for any sign of cracks in that housing

JBL930

Will do cheers! Kissed the wall is a good description, i think in this case it was trying to go have kids with it!!

bb993tt

Jonathan,

I say your PH post, including the pix of the front end damage and the interior shots of the car. Did it really take that much damage and not set off the steering wheel air bags, or am I missing something?

ACEparts_com

I have a good DRIVERS SIDE manifold for a 993tt. I promised it to Kevin but i'm sure a donation his way wouldn't go a miss.

Jean

Johnathan

Your turbos and pipes hint at the factory HP upgrade kit. The only thing that does not make much sense is that EBC, which obviously is not part of the factory upgrade. Seeing this makes me think that you will need to be a bit more thorough on the engine before fitting it back. Not a problem at all, just do a proper inspection while the engine is out to avoid later expensive labour charges.

As far as the turbos are concerned, they do seem to have taken a hit and need to be inspected. If the housing is not broken, all the parts can be purchased independently and there are also service and rebuild kits being sold for the KKK24 as well for around 50 euros or so but all the parts from bearings and their retainers, piston rings and shaft nuts, o-rings, washers, wheels, housing, cap screws, etc should be checked..you need to go to a specialist, don't let your mechanic venture in there.

If they are damaged, I personally would go with a new (or used) K24 set and avoid headaches, they sell at reasonable prices nowadays it seems.