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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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 Posted: Mon Dec 19, 2011 6:37 pm Post subject: |
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Well, the manifold isn't completely together yet so I'll go that route instead, thanks.
(edit) Interesting, I'm reading that the zetec rail is a spot on fit. I'll just yank the one out of the wife's car and use it, tell her it's broke so she has to buy a different car. (just kidding)
But I'll check with some of my zetec fanatics and see if they have a spare laying around I can buy on the cheap 
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS
Last edited by CorsePerVita on Thu Dec 22, 2011 7:14 pm; edited 1 time in total |
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fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
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| Posted: Tue Dec 20, 2011 2:27 am Post subject: |
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| CorsePerVita wrote: | | I suppose that's doable. Do you have any known rails and injectors that will fit in the stock head? I guess I can get something made, but it's a lot easier if there's something that fits from the getgo. |
The fuel rail from your 'Scort would work. Injector pockets for the head would need to be bought (034Motorsports) or made.
If you can move the TB's closer to head, you'll be in good shape. Just extend the runner from the mouth to tune the intake length and you should be fine.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Wed Dec 21, 2011 2:01 pm Post subject: |
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| fiat22turbo wrote: | | CorsePerVita wrote: | | I suppose that's doable. Do you have any known rails and injectors that will fit in the stock head? I guess I can get something made, but it's a lot easier if there's something that fits from the getgo. |
The fuel rail from your 'Scort would work. Injector pockets for the head would need to be bought (034Motorsports) or made.
If you can move the TB's closer to head, you'll be in good shape. Just extend the runner from the mouth to tune the intake length and you should be fine. |
Really, escort rails fit in our heads just the way they are??? Any specific engines or model number i should be on the lookout for?
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
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| Posted: Wed Dec 21, 2011 2:42 pm Post subject: |
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Yep. Check some of the MS threads.
Chrysler 4-cylinder and Ford 4-cylinder pieces are similar spacing.
I'm not sure of any in particular, you have to try some out to find the ones that you can mount up easily.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Thu Dec 22, 2011 7:08 pm Post subject: |
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You sir are my hero.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Sat Jan 21, 2012 11:01 am Post subject: |
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Fuel rail and injectors came from the ZX2.
Also.... a piece of shiny candy came back with me today from our local composites shop
It's finished.
VERY HAPPY with the finished results!
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Mon Jan 23, 2012 2:21 pm Post subject: |
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Sweet flippin jeebus. I have waited a LONG TIME for this moment.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Mon Jan 23, 2012 4:31 pm Post subject: |
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The final numbers are in!
Stock 924 metering plate plus boot - 12lbs
Stock 924 intake manifold - 13lbs
Stock 924 intake box with filter - 3lbs
Elbow to CIS system - 4lbs
Carbon fiber intake manifold PLUS throttle bodies off of a gsxr-1000. DRUM ROLL PLEASE!........................................5lbs.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Mon Jan 23, 2012 4:58 pm Post subject: |
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Intake manifold vs.... intake manifold.
Oh joy!
Intake mani and tbs on the right, CIS on the left.
What the cluttered engine bay looks like with CIS everywhere.
The simplicity of EFI.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Mon Jan 23, 2012 5:12 pm Post subject: |
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Herp derp for entertainment purposes of my 1337 mspaint skills.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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Nobbi
Joined: 24 Aug 2006
Posts: 1393
Location: Germany
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| Posted: Tue Jan 24, 2012 1:57 am Post subject: |
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Looks great !! When you install a LPG setup on your car you get 20Horses and less weight extra......beside the nice low price for gas....
_________________
NA 924 - april/1977- 4-speed-audi gearbox.
500.000 km with fun.....and new toy:Porsche 944 S2 Cabriolet.Other car Daimler c-class cabby,brandnew..Plus : DEUTZ 4005 tractor Built 1969 |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Sat Feb 18, 2012 11:05 pm Post subject: |
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Well, I've been taking the pedals apart and trying to get my brake setup working. I decided to work on the pedals and seal them from rust while I was at it. I also added my own touch.
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Sun Feb 19, 2012 3:04 am Post subject: |
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_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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CorsePerVita
Joined: 25 Jul 2008
Posts: 1992
Location: Redmond, Oregon
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| Posted: Mon Feb 20, 2012 11:27 pm Post subject: |
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Colors are all messed up in this picture. The rusty looking stuff is actually glue from all the sound deadening removal. The bolt is actually a stainless steel bolt but it's colored red, but it's new hardware. That's what I get for a cell phone pic.
Anyway, brakes successfully converted. Too tired to bleed them right now. I'm tired.
Had some quirks with the rails not lining up like I wanted them to so I removed them and got the seat fitment right where I wanted it and adjusted things.
Party on dudes
_________________
- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Thu Mar 01, 2012 1:43 am Post subject: |
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| CorsePerVita wrote: | I need some advice from the ITB masters here as I am receiving some conflicting information.
Undetermined #1. I am being told that the way I will have my ITBs setup is "unsafe" and will not be allowed on the track because my injectors on in the TBs themselves, and since i'm doing long runners + tb + short airhorns, atomized fuel in the runner is dangerous and a "fireball waiting to happen" - is this correct?
Undetermined #2. I am being told that my injector setup isn't preferable. Yet I've seen multistage injector setups where a set is close to the head and another set at the end of the tbs for WOT injection. I am also told this is unsafe and would not pass tech. I've seen these setups before, yet these are not "allowed?"
Undetermined #3. I am told that it is preferable to have the tb first and runners last. Others have told me it doesn't matter and it matters more where the injectors are placed, as long as airhorns are added at the end since turbulence causes problems if tbs are simply exposed with no horns. Seems more or less that this comes down to "tunability" than anything.
The math I've done says my runner lengths are proper. I'm not worried about that. What more concerns me is the safety factor.
I've seen multiple setups with 2 stage injectors where injectors are at the end of the runners for top end or WOT staging for atomization. However, i'm told this is "very unsafe" because a backfire = fireball. I sort of feel like I'm being fed a load of bullhonkey by some people on this because a backfire burning whatever is in the runner isn't going to kill anything with that small amount of fuel. At least I can't imagine it being a problem. Not to mention there's a lot of people running EXTERNAL injection systems and I've not heard of issues with that. So what the hell? |
Now, I'm no expert, but I was just reading an article on Import Tuner that was talking about injectors upstream of the throttle, typically referred to as "stand-off injector placement". According to the article, a stand-off only configuration is "not recommended for the street because a backfire or reversion backflow at camshaft overlap could cause an engine compartment fire." This may be the concern that the folks above were referring to. Here's the article: http://www.importtuner.com/features/0801_impp_itb_setup/viewall.html
As for injectors in the throttle body themselves, I can't see that being a safety concern, and to anyone who would cite it as such, my question would be, well, what about carbs???? They are essentially the same thing...fuel introduced at the throttle plate. Why would carbs be any more safe than fuel injectors????
Regarding your manifold adapter, would your fabricator be willing to duplicate it?
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erstwhile owner of just about every 924 variant ever made |
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