924Board.org

JonnyWright · Posted: Tue Dec 01, 2009 8:28 am Post subject: need help new 924

so i am new to car restoring. just turned 19 a few days ago. i bought this 1982 (or 81 not sure) 924 as a birthday present to myself. payed 600 cash for it. i would like to get the car running before i put anything special into the cosmetics. ideally i would like to take off this carburetor system that the previous owner installed. the modified setup is pretty exciting. he said its using 4 motorcycle cars from some kind of 750 model idk. if anyone could tell me what parts i need to return it to stock and where i can get them or someone wants to sell me them that would be great.
don't have any desire to turbo the car or do engine swaps. just want it to run reliably.

mikebola · Joined: 07 Sep 2009 Posts: 361 Location: Parkside, PA

I'm a little confused by the in-hood pic you got there. does this have fuel injection? I see a series of tubes coming out of the injector ports, and some kind of gauge on the driver's side strut tower.
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proud owner of a 1979 924 Sebring Edition with a 931 trans that looks horrible but somehow runs...

Rich H · Posted: Tue Dec 01, 2009 9:16 am Post subject:

If the carbs can be made to work then I'd use them you will need a lot of bits, some expensive and rare.

Tube from injector ports are probably vac lines for the brake servo.

At a guess you will need:

Fuel pump - carbs use much lower pressure $$
Fuel dizzy and air meter $$$
Spark dizzy $
Inlet manifold $
Fuel injectors $$
Injector pipe lines (Hard nylon not rubber) $
Warm up regulator $$
Cold start valve $
Aux air valve $
Various large rubber boots and pipes $
Various brackets $
Injector bungs $
Loads of wiring that has doubtless been cut $

Basically loads of work. Best bet would be to find someone reasonably local who is willing to do a swap - FI for carbs. That said a reasonable carb setup can give 20+bhp (UK car on motorbike carbs rolling roaded at 141 bhp not long back) So I would finish that off....

Rich
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1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

pocketscience · Posted: Tue Dec 01, 2009 9:36 am Post subject:

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Wow, now that's an interesting setup! You could probably sell that carb & manifold setup to fund picking up the stuff you need to go back to CIS, but I have to agree with the other guys here, it appears to be nearly complete. What's the story on this car from PO? Was it ever running, or is the carb setup incomplete?
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erstwhile owner of just about every 924 variant ever made

924guy · Posted: Tue Dec 01, 2009 11:39 am Post subject:

definitely interesting. id like to know if it was ever running/drivable with that set up. If it was, id say to get it running as is before doing anything else or tearing stuff down.
did you get the ignition distributor with the car? it appears to be missing, and that could definitely hamper repair efforts...

i think i have spares for about half the stuff you ll need to return it to stock if you decide to revert it. no fuel pump or fuel distributor, but pretty sure i have the intake stuff.
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

JonnyWright · Posted: Tue Dec 01, 2009 11:43 am Post subject:

well we started trouble shooting the car and we figured out the distributor wasn't working. i started digging around in the junk that came with the car found another distributor put the two together and turns out that was the problem! so the car runs. now the problem is tuning everything so it works together...

we tried tweaking the position of the distributor, the carbs, and the gas setting to find that perfect balance but that seems to be a hit and miss.

another problem, after we decided to cut the engine it just wouldnt turn off. we even unplugged the coils and the motor was still turning over. any body know about this?

yeah i think im going to keep the carbs

924guy · Posted: Tue Dec 01, 2009 12:23 pm Post subject:

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Man, for $600, the body doesn't look to shabby either...
How's the interior???

When you get it running and tuned, I'll be very interested to hear how those bike carbies work. One thing that really interests me about these type of arrangements is how incredibly short the intake runners are. Seems like it would really hurt low end torque, but probably sing at high RPMs. It will be interesting to see what you're able to do with the tune.
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erstwhile owner of just about every 924 variant ever made

pocketscience · Posted: Tue Dec 01, 2009 1:15 pm Post subject:

flosho · Posted: Tue Dec 01, 2009 3:01 pm Post subject:

That carb setup looks pretty sweet. Wonder where the plenum came from??? I want!

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[This Space For Rent]

Rich H · Posted: Tue Dec 01, 2009 6:13 pm Post subject:

IT will idle like a POS and will be very hard to get decent running at revs and a god idle - those carbs are not built for a 2 litre motor. However that doesn't mean they can't be made to work.

As for the running on - that's not good - but it will probably just be wiring problems.

As above - what ignition unit is it using?
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

Shurick · Joined: 15 May 2005 Posts: 524 Location: Russia, Moscow.

Running without ignition leads? Sounds like hard pre-ignition.
To set this carbs right you need to sync them. I'd suggest you to search bike specialists for this operation.
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WBR, Shurick
'79 931 -- intercooled K26-3060-6.10 turbo @ 1.2 bar, EFI+EDIS, 951S brakes, stripped interior, 951 look.
'86 924S -- R.I.P.
https://www.instagram.com/ru_pacecar/

joejax · Posted: Wed Dec 02, 2009 9:38 am Post subject:

Hey glad to see another 924 in Jax, only seen 1 other on the road. I've been lurking here for months, alot of valuable info here. I got all the CIS junk from PO, those are GSX-R carbs, I believe, PO gave up on the CIS, sometimes I don't blame him. Old throttle body intake could be modded for webers. Going back would be a real nightmare.
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I got nothin'
Uhhh...you got any pics?

StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

Hey, I would definitely hang on to intake setup! That alone is probably worth the $600 you paid for the car.

Ryan
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1978 924 NA
-250lb lowering springs, Euro Pistons