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Old 01-07-2009, 02:02 PM   #1
camaroz1985
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Default New Project: GRM $2010 Challenge Car

Just thought I would post up a quick picture of my newest project.



Its a 1975 Porsche 914 that I will be building for the $2009 Challenge. There is no engine in it now. I have been on the fence about what engine to use. Obviously my first thought was Subaru, but I think to be competitive I will need about 200hp and the budget puts any turbo engines out of the picture. This led me to think that maybe a supercharged GM 3800 V6 or a Cadillac Northstar V8 might be viable options. Both would require an adapter for the engine to the Porsche transmission (about $550, which the Subaru engine would need also if I used the Porsche transmission), and both are heavy. I would also only have about $750 for the engine and cooling system (or for a parts car with everything included).

After some persuassion by peers and some careful thought by myself, I believe the best option would be to try to use a mildly built (cams, shaved head, ported) NA 2.5 with a FWD transmission. I think I could get around 200-220hp out of this setup. I would like to only spend about $1000 for everything this way (electronics, engine, cooling, etc.) so I would have a little bit more for suspension stuff.

What do you guys think? Who wants to get rid of some parts for really really cheap?

I'll update this as I progress.
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Last edited by camaroz1985; 09-22-2009 at 12:58 PM.
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Old 01-07-2009, 02:26 PM   #2
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cool, good luck with it
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Old 01-07-2009, 06:55 PM   #3
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more info on what you're building the car for?
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Old 01-07-2009, 06:58 PM   #4
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See if you can find the FWD Impala SS drivetrain for cheap, V8 powah.
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Old 01-07-2009, 06:59 PM   #5
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Quote:
Originally Posted by misterwaterfallin View Post
more info on what you're building the car for?
http://grassrootsmotorsports.com/events/2009-challenge/

Myself and a couple guys in TXIC did one for 2007.

http://www.youtube.com/watch?v=HE1lu6eveWo&fmt=18

http://www.youtube.com/watch?v=-1WZsp4v8RQ&fmt=18
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Old 01-07-2009, 07:33 PM   #6
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Looks like you picked it up in Hershey Good luck with the project. Keep us updated.

J
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Old 01-07-2009, 09:22 PM   #7
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Bitchin'! Good luck!
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Old 01-07-2009, 09:36 PM   #8
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I am going to save for next years 2010 and put one together. been watching this for a couple years and always been interested.

I got a buddy who has a porsche 944 turbo motor been sitting in his garage for a couple years. Not sure if he still has it though. In Central KY
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Old 01-07-2009, 11:48 PM   #9
camaroz1985
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Quote:
Originally Posted by TyrannoSullyRex View Post
See if you can find the FWD Impala SS drivetrain for cheap, V8 powah.
I originally thought about either a 3.8L Supercharge V6 or a Northstar V8, but have since changed my mind to go back to the more light weight approach and concentrate on the autocross more. Besides the LS engines aren't easy to come by for cheap.

Quote:
Originally Posted by thrasher View Post
Looks like you picked it up in Hershey Good luck with the project. Keep us updated.

J
Close to Hershey. How did you know?

Quote:
Originally Posted by blackcompany2000 View Post
I am going to save for next years 2010 and put one together. been watching this for a couple years and always been interested.

I got a buddy who has a porsche 944 turbo motor been sitting in his garage for a couple years. Not sure if he still has it though. In Central KY
Do you mean the 944 motor for the 914 or for your project? From what I hear they are too long to fit in the 914 engine bay without extensive modifications to the firewall.
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Old 01-08-2009, 09:21 AM   #10
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for your project, like I said I'm not sure if he still has it because I moved. I am unsure about fitments as I am not a porsche man myself. He bought the motor from some buddy who had a rich buddy and was having boost issues. It was bleeding off under higher boost. So the kid pulls the whole motor and puts a new one in. Turns out it was a split hose that was leaking off! HA HA! Still my friend got the whole thing cheap and never had anything to put it in.
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Old 01-08-2009, 10:44 AM   #11
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I can ask around down here if anyone has some spare RS parts laying around.
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Old 01-08-2009, 12:25 PM   #12
camaroz1985
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Quote:
Originally Posted by WRX8XB View Post
I can ask around down here if anyone has some spare RS parts laying around.
Thanks. I'm looking for basically a 2.5 shortblock and maybe the electronics also. Of course if I can find something cheap I would def be interested in the whole thing.

And just for reference, with this project cheap has a whole new meaning. I'm talking $300-500 for the engine.
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Old 01-08-2009, 12:28 PM   #13
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The year we went, there was a 914 with a SHO drivetrain in it.
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Old 01-08-2009, 02:42 PM   #14
camaroz1985
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Quote:
Originally Posted by TyrannoSullyRex View Post
The year we went, there was a 914 with a SHO drivetrain in it.
Heavy but interesting.
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Old 01-08-2009, 03:13 PM   #15
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Quote:
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Heavy but interesting.
Looked around and found a picture.

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Old 01-08-2009, 04:03 PM   #16
camaroz1985
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Nice. Looks like he used spacers/adapters for the wheels, and the radiator in the back. Very interesting.
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Old 01-08-2009, 04:06 PM   #17
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Good call on the motor AND the transmission. Those porsche trannies were not meant to take the abuse a high-torque motor would give them. My buddy had a '74 with a buick V6 in it, which he grenaded, and replaced with a mildly built chevy 350. Even with an iron block and heads, "RV" cam and shorty headers, that thing was FAST.

Cooling WILL be an issue, so the smaller the motor, the better. Since you can just run the coolant lines through the cabin, it will be significantly easier. My friend spent a ton of money on lines that went under the car, and in the end his cooling system was barely adequate. He sold the car before it was ever fully sorted... but it sure was a blast.

An N/A subie powertrain will be torquey, reliable, and "enough" power for that car. Whether or not it's enough for the GRM challenge is another thing... people come up with some amazing stuff!
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Old 01-08-2009, 04:06 PM   #18
camaroz1985
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Just checked. That engine weighs about 465lbs. The Subie is 200lbs less. I'm not sure about the differences in transmissions, but considering I'm trying for the same power he had I should be ok.

Do you remember how it finished? I can't find the 2007 results.
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Old 01-08-2009, 04:15 PM   #19
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42nd (we finished 21st, his other car got 33rd, yes he had two cars there), I think he had a bad time at autocross, got caught out by the rain. We did it early to get some dry runs in.

http://grassrootsmotorsports.com/eve...lenge/results/
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Old 01-08-2009, 04:52 PM   #20
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Thanks. I was just curious as to his autocross and drag times (the full excel results link isn't working).

Are you guys planning to do it again?
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Old 01-08-2009, 05:47 PM   #21
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Quote:
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Thanks. I was just curious as to his autocross and drag times (the full excel results link isn't working).

Are you guys planning to do it again?
Possibility. The 383 is out of the RX-7 at the moment, maybe get an LH6 (5.3 liter LS truck motor, aluminum block) and drop that in there. You can get those for around $6-700 (used, obviously).

I have an idea for a mid engine V8 powered Bug (using an Audi A8 motor and an Audi 01X or E transaxle, 5-600 for the package), but the increase in steel prices put a stop to that.


edit: oh we didn't do any drag times at that event, that was rained out. We later did a very traction limited 13.2 with a 1.9 60' while banging out the last 1/8th (overheated).
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Old 01-08-2009, 06:03 PM   #22
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Yeah I would have liked an LS engine, but the price of the engine, plus needing an adapter to the trans kind of killed that.
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Old 01-08-2009, 07:11 PM   #23
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Quote:
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Yeah I would have liked an LS engine, but the price of the engine, plus needing an adapter to the trans kind of killed that.
Alot of FWD transaxles may bolt right up to an LS whatever. The Impala SS for example (mentioned earlier) may use a common transmission that is in several GM cars, I haven't researched it at all, but with GM's parts-bin mentality, it seems logical.
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Old 01-08-2009, 08:52 PM   #24
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Quote:
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Close to Hershey. How did you know
I just happened to recognize that area on 422. I'll have to keep my eye out for your RS around here

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Old 01-08-2009, 09:40 PM   #25
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save some more money and do it right, the first time
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