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Lenkru
Joined: 27 Jul 2010
Posts: 10
Location: CAPE TOWN, SOUTH AFRICA
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 Posted: Wed Jul 28, 2010 12:30 am Post subject: |
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Here is some pics. I am busy fabricating a new plenum, and I will take pics as I go along. Here is with the single row injectors.
[img]http://mynetimages.com/album/lenkru/924?img=dee365272b[/img]
Here is with the double row I need when boosting over 1.2Bar
[img]http://mynetimages.com/album/lenkru/924/?img=03d086d0fb[/img]
Hope I did this right I haven't posted photo's before |
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Wed Jul 28, 2010 1:12 am Post subject: |
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The stuff between the IMG tags MUST end in either .jpg or .gif.
Try this:
Tell us more about that boosterless setup shown in the last image...
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erstwhile owner of just about every 924 variant ever made |
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Lenkru
Joined: 27 Jul 2010
Posts: 10
Location: CAPE TOWN, SOUTH AFRICA
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| Posted: Wed Jul 28, 2010 1:35 am Post subject: |
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Thanks for the help
The blue car is it's original colour. I first removed the booster to make space for the plenum but as you can think the brakes pedal was very stiff. I played around with different master cylinders till I found one that gave me the correct pedal feel. It has decent brakes but I need an upgrade it tends to fade after 3 or 4 fast laps. My budget is very tight and I do everything myself so I will look around till I find something suitable. 
It used to glaze the pads very badly but I fixed that by slotting the disks. Heavy on pad wear but no more glazing http://mynetimages.com/album/lenkru/924?img=3a6b3dfd82.jpg |
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Sat Jul 23, 2011 8:42 am Post subject: |
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For those EDIS aficionados, here's the distributor block-off method using block freeze plugs. yo.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Sat Jul 23, 2011 8:47 am Post subject: |
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Brilliant!
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Sat Jul 23, 2011 9:36 am Post subject: |
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One thing to add to the above...you could EASILY create a breather port by drilling a hole in the freeze plug and installing a nutted -AN fitting...
Brilliant. Love it.
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2mAn
Joined: 22 Jul 2011
Posts: 27
Location: Seattle, WA
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| Posted: Sun Jul 24, 2011 2:18 am Post subject: |
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i have a few questions about converting a 931 to EFI. what fuel rail are you using? also i know most people who convert to megasquirt (im from the VW world) use GM sensors. what about someone who ISNT using megasquirt, is there factory Bosch sensors we can use. Without going into too much datil im curious if its possible to run a 931 motor on a motronic OBD2 setup
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25% of my cars work 75% of the time |
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Tue Jul 26, 2011 5:42 am Post subject: |
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| ideola wrote: | | One thing to add to the above...you could EASILY create a breather port by drilling a hole in the freeze plug and installing a nutted -AN fitting... |
There is some interesting misconceptions about using the distributor area as a breather port, this in my opinion is a very bad idea. It will not work as expected at all. You'd be better off just drilling and tapping the valve cover (it is thick enough after all) if you require extra breather.
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. |
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Tue Jul 26, 2011 5:45 am Post subject: |
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| 2mAn wrote: | | what about someone who ISNT using megasquirt, is there factory Bosch sensors we can use. |
Not sure about your question, but I figured I'd better clear something up here. You can use megasquirt with any type of sensor that is resistor based for temperatures, however using the gm sensors is -easy- and cheap, which is why most people do it. If you know the temperature vs resistance curve of your sensor, you can simply program it into the megasquirt.
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. |
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Tue Jul 26, 2011 5:45 am Post subject: |
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| Min wrote: | | It will not work as expected at all. |
Can you elaborate? Not sure I understand why...if you have negative pressure it should vent from there as well as anywhere else, would it not?
Of course, this is really a moot point on a 931 since it already has a breather update at the front of the head...
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Tue Jul 26, 2011 5:51 am Post subject: |
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| ideola wrote: | | Can you elaborate? Not sure I understand why...if you have negative pressure it should vent from there as well as anywhere else, would it not? |
Sure, there is a 6mm(approximately, haven't measured it) drain hole at the bottom of the distributor housing that drains the oil that fills the distributor housing for lubrication purposes, this is the only hole that would allow the crankcase to 'breath'. During operation of the engine, it is filled with oil that is flowing from the rear bearing, it can't really 'breath' it would be not effective at all as a breather. It would have to be enlarged quite a bit before it would be effective.
If insufficient breathing is an actual issue on your motor(pressurized crankcase), what will probably end up happening is the oil from that cavity will end up being pushed back up the breather you've created and spilling out someplace. Rather than a slightly pressurized oil gallery being created back there which is what happens normally.
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. |
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Tue Jul 26, 2011 5:54 am Post subject: |
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Ahhh...makes sense. One of the GTRs had a breather fitting attached to the side of the oil filler boss.
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2mAn
Joined: 22 Jul 2011
Posts: 27
Location: Seattle, WA
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| Posted: Wed Aug 03, 2011 4:27 am Post subject: |
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Where are you guys getting your fuel rails from? Also what size injector is good for starting out? Im looking at upping the boost and was thinking about some 42lb injectors to go with it
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ideola
Joined: 01 Oct 2004
Posts: 15546
Location: Spring Lake MI
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| Posted: Wed Aug 03, 2011 5:16 am Post subject: |
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| 2mAn wrote: | | Where are you guys getting your fuel rails from? Also what size injector is good for starting out? Im looking at upping the boost and was thinking about some 42lb injectors to go with it |
Perhaps you'll be interested in this thread:
Available Soon: Purpose-built Fuel Rail for 924/931
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Wed Aug 03, 2011 5:57 am Post subject: |
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I have a spare one of these, minus the cool fittings. 60 bucks delivered.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
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924 FAQ (Technical)
