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Lildudes Ultimate 931 EFR Build
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lildude4life  



Joined: 27 Apr 2015
Posts: 14
Location: Milwaukee WI

PostPosted: Mon Sep 24, 2018 1:08 am    Post subject: Reply with quote

She now has EFI! Full post coming soon. I want to work all the kinks out before I post anything.

What would you like to know?
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"931 EFR" 81 931 S2 w/ EFR 6258 turbo
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WEASEL149  



Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield

PostPosted: Mon Sep 24, 2018 2:38 am    Post subject: Reply with quote

We want to know EVERYTHING

Very nice build. Well done man
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1979 UK 932
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CÚdric  



Joined: 27 Aug 2004
Posts: 1766
Location: Sweden

PostPosted: Mon Sep 24, 2018 2:44 am    Post subject: Reply with quote

WEASEL149 wrote:
We want to know EVERYTHING

Very nice build. Well done man



+1, everything would be nice
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┤80 924 Turbo
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ideola  



Joined: 01 Oct 2004
Posts: 15511
Location: Woodstock IL

PostPosted: Mon Sep 24, 2018 3:20 am    Post subject: Reply with quote

You're all going to love it. Definitely need to suscribe for the updates. Lildude has kept excellent documentation on this build. It's well executed and the car is 99% there, just a few wrinkles to iron out with the EFI programming.
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15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
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lildude4life  



Joined: 27 Apr 2015
Posts: 14
Location: Milwaukee WI

PostPosted: Mon Sep 24, 2018 8:25 am    Post subject: Reply with quote

CÚdric wrote:
WEASEL149 wrote:
We want to know EVERYTHING

Very nice build. Well done man



+1, everything would be nice


Didn't your mother ever teach you, when you ask for everything, you get nothing?

Ask me some questions, and I will be happy to answer.

Main issue I'm having before I do a similar EFI post is that "I think" (raceboy may disagree) I'm having computer related fuel cut issues. Once that is sorted out, and I get a few hundred more miles on it before it snows, then I'll do a full recap of the EFI. Sad to say though, Dan and I were working on it together to put the Ideola EFI kit together, and that may no longer be a thing. But if I can at least document everything I did, and what Raceboy provided, it may help quite a few other 924er's do a conversion.
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WEASEL149  



Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield

PostPosted: Tue Sep 25, 2018 6:58 am    Post subject: Reply with quote

lildude4life wrote:
Didn't your mother ever teach you, when you ask for everything, you get nothing?

Ask me some questions, and I will be happy to answer.

Main issue I'm having before I do a similar EFI post is that "I think" (raceboy may disagree) I'm having computer related fuel cut issues. Once that is sorted out, and I get a few hundred more miles on it before it snows, then I'll do a full recap of the EFI. Sad to say though, Dan and I were working on it together to put the Ideola EFI kit together, and that may no longer be a thing. But if I can at least document everything I did, and what Raceboy provided, it may help quite a few other 924er's do a conversion.


So now you've mentioned the magic name 'Raceboy', I take it this is a VEMS based conversion?

I have all the VEMS gear ready from Raceboy but just haven't had mental capacity to finish the final leg on my own project due to a multitude of bad shit happening over the last 2 years. It will be continued very shortly though with any luck.

So , questions. Which injectors? Batch or sequential? I guess you went with front pulley mounted crank trigger (36-1)?

Fully documented how-to sounds cool - I do intend to do similar when mine finally gets finished.
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lildude4life  



Joined: 27 Apr 2015
Posts: 14
Location: Milwaukee WI

PostPosted: Tue Sep 25, 2018 8:26 am    Post subject: Reply with quote

WEASEL149 wrote:
I take it this is a VEMS based conversion?

Yes VEMS via Raceboy

WEASEL149 wrote:
Which injectors? Batch or sequential?

Injectors: Siemens 60lb model: 107961

Batch. Doing Sequential would require a secondary trigger wheel on the camshaft, and I wanted to keep it as KISS as possible.


WEASEL149 wrote:
I guess you went with front pulley mounted crank trigger (36-1)?


Correct.
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Mike9311  



Joined: 14 Dec 2004
Posts: 678
Location: Chicago-ish

PostPosted: Thu Sep 27, 2018 12:25 am    Post subject: Reply with quote

A 'lil teaser

https://vimeo.com/291914979

Taken at the last 4th Friday
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1980 931 ...off with the cobwebs
1982 931 Entwicklungsfahrzeug
1979 924 NA M471/M481 / ohne M650 Herausnehmbares Dach
0.5 1982 931 smashed parts car
1982 931 parts car?
1980 924 NA (R&D lightweight)
1982 931 WB wana-be GTR race car
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poor-sche  



Joined: 06 Jan 2017
Posts: 17
Location: Los Angeles, CA

PostPosted: Thu Sep 27, 2018 7:10 am    Post subject: Reply with quote

Looking forward to reading the write up on this, but was wondering if it's worth while doing this upgrade if your CIS is operating normally?

Would this upgrade be strictly for more FUN factor or is it also for reliability?

Looking for justification points for the boss.
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Mike9311  



Joined: 14 Dec 2004
Posts: 678
Location: Chicago-ish

PostPosted: Fri Sep 28, 2018 1:03 am    Post subject: Reply with quote

poor-sche wrote:
Looking forward to reading the write up on this, but was wondering if it's worth while doing this upgrade if your CIS is operating normally?

Would this upgrade be strictly for more FUN factor or is it also for reliability?

Looking for justification points for the boss.


in lil'dudes case its a 'tad' different. He is running a Borg Warner EFI Turbo. Look closely at the Avatar

Of course, set up correctly you'll get reliability and with that fun. If your set up is stock and the CIS is running fine, I wouldn't bother.
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1980 931 ...off with the cobwebs
1982 931 Entwicklungsfahrzeug
1979 924 NA M471/M481 / ohne M650 Herausnehmbares Dach
0.5 1982 931 smashed parts car
1982 931 parts car?
1980 924 NA (R&D lightweight)
1982 931 WB wana-be GTR race car
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