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Craig 930 RS's Avatar
 
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,152
Lightbulb RPM enrichment delay switch/solenoid/965 BS IC install process

This will be a drawn out process due to time constraints - stay tuned over the next ? days/weeks

Today I am beginning to install the Brain Leask RPM switch and solenoid kit - to complement and enhance the Imagine Auto fuel head and Brian Leask WUR setup. Brings the richness down to about 12:1 AFR over almost the entire rev range.

Just beginning. Looks rough now, but this will be cleaned up and nicely sano when finished.





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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno

Last edited by Craig 930 RS; 11-08-2006 at 01:24 PM..
Old 11-08-2006, 11:44 AM
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Craig 930 RS's Avatar
 
Join Date: Sep 2003
Location: Kirkland, WA
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Dynamometer run: 438 RWHP & 413 RWTQ at .9 bar.

Setup is fully installed - details and pictures on Monday or Tuesday!
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-12-2006, 06:07 PM
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details man. We need details. Congratulations on the beast. I am basing my future mods on your experiences here and appreciate all the documentation.

JP
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86 930/4 tribute beasty
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Old 11-13-2006, 08:07 AM
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Craig 930 RS's Avatar
 
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Details coming........

Turns out to be way more complex thatn I thought - I think I had a boost leak (stupid mistake on my part - left off IC post spacer, making the IC tilt) which makes the AFR number and charts suspect.

Hang tight!
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-13-2006, 08:11 AM
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Craig 930 RS's Avatar
 
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Raw data. Red line is best previous run in October.
Other runs are this past Saturday. Getting there!

Tweakage of the WUR and ROM switch activation points are needed - now it's too lean down low....



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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno

Last edited by Craig 930 RS; 11-13-2006 at 08:32 AM..
Old 11-13-2006, 08:29 AM
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Craig 930 RS's Avatar
 
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If the monsoons stop, I'll take some outside pics of the RPM switch/solenoid install - turned out well.

Maximum IC outlet temps were 80 degrees on the dyno runs - HUG fan strapped to the IC
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno

Last edited by Craig 930 RS; 11-13-2006 at 08:56 AM..
Old 11-13-2006, 08:33 AM
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Craig 930 RS's Avatar
 
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* Check my sig line for the dyno run video! *
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-13-2006, 09:19 AM
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Don't you want some more fuel in that thing man?
I mean, if your turbo is like mine, you are at full boost at 3000 RPM, and at that point, your in the 13.5-14.0 AFR range from what I see.

You sure you don't want to add a little fuel to it?
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TEC3 EFI Conversion on 1983 930
Old 11-14-2006, 04:59 PM
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Absolutely! As I said above, I need to add more fuel down low.
And major tweakage of the WUR and perhaps an RPM tab change.
--------
Here is the note resulting from that dyno run from the creator of the WUR and the RPM/solenoid setup:

Looking good Craig. It looks like youíre almost there tuning wise. Thatís quite an impressive gain in HP & TQ, and pretty much exactly what we had guessed at 440 RWHP. Congrats!


That being said, you need to richen the mixture in the lower/mid-range slightly. You should try doing this with the idle mixture screw first. If that doesnít get you enough fuel, a slight decrease in the warm control pressure will also help. You also need to richen the top end. You can do so by adjusting the enrichment insert in the bottom of the WUR. I would guess you need to tighten the adjustment nut/stud about Ĺ turn to get you to an even 12.0 AFR between 5500 and 6500 RPM.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-14-2006, 05:58 PM
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OK.
Cool.
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Competition Custom Paint
1983 930
My Track Videos
TEC3 EFI Conversion on 1983 930
Old 11-15-2006, 02:44 AM
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