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Registered
Join Date: Apr 2014
Posts: 10
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MFI thermostat connection
What do people connect the hot air side of the MFI pump thermostat hot air
input to if you have a straight racing exhaust without heat exchangers? thanks -phil |
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08-15-2017, 02:20 PM
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Registered
Join Date: Dec 2008
Location: San Antonio, Texas
Posts: 3,590
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You need to go to a manual screw.
The stock heat exchangers have a tube which feeds hot air to the tube. You could also fabricate a small heat exchanger around the collector.
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1973 911S (since new) RS MFI specs 1991 C2 Turbo |
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08-15-2017, 03:53 PM
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Functionista
Join Date: Jul 2011
Location: CO
Posts: 7,717
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Years ago I read that the factory would use a small bulb under the thermostat in an enclosure on header equipped race cars. I believe it was Roland Kunz who relayed this info. I don't believe he has posted in years.
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Jeff 74 911, #3 I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible. |
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08-15-2017, 04:26 PM
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Functionista
Join Date: Jul 2011
Location: CO
Posts: 7,717
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And of course Supertec sells the cable actuated enrichment lever set up.
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Jeff 74 911, #3 I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible. |
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08-15-2017, 05:55 PM
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you remove the thermostat and build and aluminum plate to cover the area. Duplicate the base of the thermostat housing.
Drill a hole in it for a 6mm screw, install a steel helicoil. INsert a 6mm bolt and use this to adjust overall mixture of the MFI. I did this years ago on my 2.7 and it is a great mod. Just remember that you have to push the lever in with the screw or the MFI will run way rich like a cold day!!!
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RGruppe #79 '73 Carrera RS spec 2.7 MFI 00 Saab 95 Aero wagon stick 01 Saab 95 Aero wagon auto 03 Boxster 90 Chevy PU Prerunner....1990 |
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08-15-2017, 07:39 PM
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Registered
Join Date: Apr 2014
Posts: 10
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Thanks
I will give supertec a call -- I have the handbrake choke lever unused ...
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08-16-2017, 01:03 PM
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RS Homage
