924Board.org

endwrench · Joined: 07 Dec 2002 Posts: 1631 Location: Victor, Montana

Absolutely gorges!! Just plain WOW! Some serious engineering.

BUT, this part just pisses me off....

Fast924S · Joined: 18 Feb 2005 Posts: 39 Location: New Haven, CT

OMG, I think Im in love, That looks KILLER, Very Very good work, I wanna hear it run

Now, Come to my garage and help me make my 924S badass, I'LL pay you in beer, Sound good?
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Rebuild COMPLETED, Many mods, better power, Just ask for info

Joes924Racer · Posted: Tue Jul 15, 2008 9:12 am Post subject:

Hey I was thinking while driving at work today.. next year Ill
try for the motor - cycle 1000 cc carb adaption trick. Entailing designing
some intakes for each carb nl figure out the linkage and find the right jet size.. want to get a GT front end for it too 924 style. I got
the color choice for the front end also .. . orange. I ll just cut the side skirts off at the end of the body by the door and run a angle back on it.

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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Peter_in_AU · Joined: 29 Jul 2001 Posts: 2743 Location: Sydney, Australia

So, are we on track to get them in the stores by Christmas?

Very inspiring.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

flosho · Posted: Wed Jul 16, 2008 1:20 am Post subject:

I'll take one, do you take kidneys?
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[This Space For Rent]

bass gt · Posted: Wed Jul 16, 2008 4:39 am Post subject:

flosho · Posted: Wed Jul 16, 2008 9:36 am Post subject:

That would be a good start, if you could save and post your CAD diagrams.

I know there is that place on the internet that if you send them CAD files will machine items.

I'm interested in the plenum set up, but would rather just have "simple" runners, if you know what i mean. Looks like the runners are 3 or 4 pieces.
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[This Space For Rent]

bass gt · Posted: Wed Jul 16, 2008 7:04 pm Post subject:

It would be very easy to machine a flange, and have a single 45deg pipe connected into it. You could then either mount the injectors into the head with one of Todds kits, or weld injector pockets into the pipe. Then mount the pipe to a plenum chamber, fit a throttle, and off you go. The reason mine is segmented, is that it is made from standard Jenvey stock parts. Using these, and making the adapter flange the correct height, allowed me to lift the runners up, ala the GTR, get the correct clearance to clear the alternator, get the correct runner length ect. There is more to this as well. Under the plenum chamber, i am going to mount an oil to water heat exchanger, as i need to heat my oil up quicker.
However, the main reason i did this is to clean up the air flow into the head. As the injectors are upstream, it is very easy for the fuel to drop out of suspension, as it negotiates the original 120deg bend.This can happen at low air speed due to lack of velocity, and at high airspeed due to centrifical force. If you look at the GTR's, they did this too, with the mechanical injector place at the bend of the runner and facing backwards into the airflow, to maximise atomisation. To improve performance, we need to improve thr flow of the head. The 120deg bend is a major downside. If you look at modern motorcycles, the inlet runners go down into the head at little more than 15degs from vertical. This optimises cylinder filling, and performance.

Steve
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Front Wheel Drive is the Devil's work.

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

bass gt · Posted: Thu Jul 17, 2008 9:33 am Post subject:

Raceboy,

I'm fitting Siemens 660's pencil injectors. Should be much better.

Steve
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Front Wheel Drive is the Devil's work.

genikz88 · Joined: 29 Mar 2006 Posts: 64

That setup is a work of art. Cheers to all that worked on that beauty.
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Chris
'88 924S

flosho · Posted: Thu Oct 02, 2008 2:54 pm Post subject:

Steve, any word on the CAD files for the machined intake parts? Plus whatever happened to the previous intake plenum?
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[This Space For Rent]

bass gt · Posted: Fri Oct 03, 2008 7:40 am Post subject:

Flosho,

I think the guy who did my original machining has either moved or gone bust as there is no one there now!! however, i do have a couple of spare flanges sitting about, so i could post some pics with measurments if that helps. However, all i did was measure the bottom end of the stock inlet system, and derived the dimensions from that.
Re the old manifold plenum, it's sitting in my unit somewhere!!

Steve
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Front Wheel Drive is the Devil's work.

Joes924Racer · Posted: Mon Oct 06, 2008 11:52 am Post subject:

That thing is so awesome.. wow
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Brockoli · Posted: Tue Oct 14, 2008 5:51 am Post subject:

i could stare at those pics forever
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'80 924 M471,Wideband O2, Full coilover susp,23/19 sways,Bilstiens,KLA Strut Brace,Roll Bar,Test Pipe,BBS RS, Willwood BBK

25% of a '87 944 Chumpcar http://straightpipe.ca/forums/showthread.php?t=2454

'79 924 Sebring Edition(Sitting)