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Stoney13 · Joined: 02 Feb 2011 Posts: 35 Location: Brandon MB

Was thinking, a holley 2300 carb on a custom intake would make for great ease in tuning.
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I am car biased. Not brand wise or motor size. I don't like crap plain and simple.

1978 924 N/A

2011 Ford Ranger

Min · Posted: Thu Feb 10, 2011 2:00 pm Post subject:

why would you bother making a nice intake, just to put a 2 barrel carb on it? ... seems counterintuitive to me.

Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting.

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

He apparently wants to make the 924 into a Mustang II or a Pinto

Seriously though, unless you fix the flow in the head, no intake change is going to make much difference. The stock CIS isn't a bad solution as long as it is working well and an EFI conversion is the next solution people look at.

Let's face facts, if you did have someone build a 2-bbl manifold for the 924 motor, you won't have much room to pull it off with the stock hood. You'll need to make room for a large plenum under the carb or you'll not have a chance for equal distribution to the cylinders and keep the runners with a slight downward slope into the ports.

However, if you really want to go this route, see if there is another car with similar cylinder spacing that can have it's intake adapted to fit. I know the Ford CVH and Chrysler 2.2/2.5 are very close.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

924RACR · Posted: Thu Feb 10, 2011 10:53 pm Post subject:

I've been contemplating building one for my turbo, but only to facilitate putting on the intercooler and Megasquirt, not to support a carb conversion. Yuck.

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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Stoney13 · Joined: 02 Feb 2011 Posts: 35 Location: Brandon MB

The cost of the weber redline kit, is half the value of a 924. I like the kit, seems very pricey. The CIS as nice as it is..looks like a rats nest plain and simple.
_________________
I am car biased. Not brand wise or motor size. I don't like crap plain and simple.

1978 924 N/A

2011 Ford Ranger

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Buy the sidedraft intake separate. They come up every once in a while for about $130 +/- and the carbs are just standard Weber sidedrafts which you can sometimes find fairly cheap, get a matched pair and then do your research and get some jetting parts in the proper range.

Subsequently, you could buy a set of DCOE-style EFI throttle bodies and install MegaSquirt or another aftermarket EFI systems to control them.

There are a few suppliers around making the DCOE-style throttle bodies (Extrudabody, TWM, Jenvey, etc)

If the way the CIS system looks really bothers you, then clean it up. Wrap the hoses in protective wrap individually, then wrap them in a larger sleeve to cut down on the visual clutter. You can do something similar with the vacuum lines. Ditch the stock airbox and build one yourself that pulls air from the cold, etc.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

the_mad_electrician · Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia

I did my weber conversion out of mostly used parts for under $500. I like the webers but I might someday get those DCOE style TBs

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81 924 N/A

2004 Ranger "Edge"

2005 Mazda 6

Khal · Posted: Fri Feb 11, 2011 7:56 am Post subject: Re: cost

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

Hey I just wanted to jump in and suggest you get Webers too. I think if you patiently look in the For Sale forum and on Ebay, you will find a set for a reasonable price. Weber to me seem like the correct upgrade. They fit under the hood, and are period correct. And they look pretty cool to boot. I think putting a holley carb on your car would cause more headaches than it is worth. The weber conversion is a fairly common mod, where as no one that I know of has a holley carbed on a 924... or any Porsche for that matter.
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1978 924 NA
-250lb lowering springs, Euro Pistons

Stoney13 · Joined: 02 Feb 2011 Posts: 35 Location: Brandon MB

I think ill go with the webers due to some hood clearance issues. Did some measuring today. Percys Adjust a Jet on a 2300 was going to be my method of tuning. Ive worked with Holley carbs befor. I performed a bigblock 429 swap into a fox body mustang(tight fit!). So i have some experience with fabricating. My 924 has a perfect black leather interior with a good body and only 34000 miles. I did a history check on the vehicle and it really does only have 34000 miles. So maybe its quite deserving of the weber kit even though its rather expensive.
_________________
I am car biased. Not brand wise or motor size. I don't like crap plain and simple.

1978 924 N/A

2011 Ford Ranger

Khal · Posted: Fri Feb 11, 2011 11:51 am Post subject:

As an aside, you might enjoy fiat22turbo's description of the C.I.S. system...

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Rocco R16V · Joined: 03 May 2009 Posts: 497 Location: PNW

i vote; dcoe manifold, ITB's and megasquirt!

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Yep,

but when compared to a normal carb, I'd deal with CIS instead.

Of course I ditched my working CIS for sidedraft throttle bodies and MegaSquirt. Then again, I'm a little "special" sometimes.

After dealing with Holley/Weber 2- bbls for many years, I can honestly say that I'd like to never, ever deal with another carburetor for as long as I live.

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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)