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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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924RACR
Joined: 29 Jul 2001
Posts: 8957
Location: Royal Oak, MI, USA
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 Posted: Wed Apr 10, 2024 9:42 pm Post subject: |
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Yeah, they do that; I was shocked when mine did the same!
My EFI 931 is now so reliable my wife loves to drive it without me!!! Fun to drive, easy to start, drives reminiscent of (though obviously not the same as) her 924 NA racecar... only reliable and always starts and runs perfectly! LOL
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Vaughan Scott
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'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Beartooth
Joined: 05 Apr 2022
Posts: 302
Location: Roberts, MT
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| Posted: Thu Apr 11, 2024 6:09 am Post subject: |
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Mine's a champ on cold starts - I'm really not sure how or even if it could be improved on. Hot starts are another story: in the half hour to an hour window, it can take up to thirty seconds of cranking. I've heard it's from fuel vaporizing in the injector lines, and I'm tempted to try wiring the cold start injector to a momentary switch on the dash, like others here have. Anyway, hold on to the FD and WUR from that 931 - could just be you've got one of the good ones!
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1980 931 diamond in the rough |
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Thu Apr 11, 2024 6:44 am Post subject: |
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Maybe wasnt clear enough, 
The 931 started on efi, i didnt bother trying to start it on k-jet.
The k-jet from this car is for sale for anyone interested
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Beartooth
Joined: 05 Apr 2022
Posts: 302
Location: Roberts, MT
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| Posted: Thu Apr 11, 2024 8:49 am Post subject: |
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Nope, it's right there "(on efi)" My bad! 
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1980 931 diamond in the rough |
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Mon Apr 15, 2024 11:35 pm Post subject: |
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The first EFI kit installation is done, meaning the car started and drives.
This is a 76 car, quite a bit different from the one i developed the kit on so there were some hickups here and there, but i have learned a lot from that.
My 931 EFI installation is also complete, and that one went smoothly as it is a late car.
Anyway, below is the EFI kit on a table, thanks to Frank for providing the picture.
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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barnwerks
Joined: 28 Oct 2022
Posts: 37
Location: Northeast and southeast US
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| Posted: Sun Apr 21, 2024 11:07 pm Post subject: |
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| Great job on the video Morghen. I really appreciate your attention to the details and the effort to complete this conversion kit in a way that can benefit so many of us. |
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Thu May 09, 2024 6:27 am Post subject: |
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Slowly moving forward with the 931 version. By that i mean getting this car into a drivable condition so i can refine the maps and settings.
I’ve started with the supercharged maps obviously, and began making some adaptations needed for the 931.
Had a short drive today to check some of my repairs and work on the car and was happy to find that the turbo is alive and sounding well.
https://www.instagram.com/reel/C6t8awRiwUk/?igsh=a2djNnltYnl6bDU2
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Sun May 19, 2024 8:24 am Post subject: |
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Still at it, this car needed and still needs a lot of work to be safe and reliable for the road.
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mrborrie
Joined: 09 Jun 2021
Posts: 29
Location: Netherlands
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Thu May 30, 2024 10:20 pm Post subject: |
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| mrborrie wrote: | | Okay so where do i buy this for my 924 , Kjet can go to hell |
k-jet served us well for many years. Technologically it is obsolete and incapable compared to what we now have access to...nevertheless, for what it was, it was an amazing system.
Would i go back to it? no, never, but i do respect it and it did keep me in the 924 scene for many years. The EFI kit is heavily inspired and influenced by the k-jet, one of the main goals was to replace as few parts as possible and to make it look as similar to k-jet as possible.
Have a look on my website, i've also listed my email there, drop me an email and i'll put you on the build lists.
Availbility of the kit isnt great right now as demand is higher that what i can put together, but i'm working to improve that.
Nevertheless, if k-jet is dying and more of us will have trouble with it, we now have a recipe we can simply order based on drawings, CAD data and a list of components.
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Kenodog
Joined: 25 Jun 2003
Posts: 2667
Location: Vancouver,B.C.
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| Posted: Fri May 31, 2024 5:07 am Post subject: |
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You better get back in that car before some gypsy steals it ! You ballsy Bro....
All kidding aside dude, when are you bringing my kit over to help me install it ?? Also the engine, transaxle and everything else to bring her to life from the shell she is now....ugh
I need a 931 S2 kit please and thank you.
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
2024 KLX140 |
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Fifty50Plus
Joined: 28 Feb 2008
Posts: 1410
Location: Washington DC area
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| Posted: Fri May 31, 2024 6:46 am Post subject: |
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If Ciprian is doing house calls in North America, I could use some help in Maryland. 
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1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car |
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morghen
Joined: 21 Jan 2005
Posts: 9067
Location: Romania
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| Posted: Fri May 31, 2024 4:48 pm Post subject: |
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Leigh (Kenodog) has been to my house a couple of times and we are close friends, i promised and owe him at least one visit since years now.
I'll have to keep my promise somehow..
Trying to to get into more promises but i would like to do a tour at one point, visiting people from the community.
I've restarted working on the 931 and plan to drive it some more this weekend and improve the tune as well as the car.
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