 warm up regulator for MFI, conversion to manual |
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| Speedo |
 Dec 15 2025, 12:58 PM
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#1
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Senior Member  Group: Members Posts: 563 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains 
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What are my options? Does anyone offer a conversion kit other than Supertec?
I'm going to run a 2.4 MFI engine for a while. I don't want to weld up an MFI hot air bung in my factory heat exchangers. |
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| rudedude |
Dec 15 2025, 01:26 PM
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#2
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Senior Member Group: Members Posts: 534 Joined: 1-January 05 From: minneapolis, mn Member No.: 3,387 Region Association: Upper MidWest
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There are a number of fuel injection components that also need to be fitted. Might be easier to put the webers you have for your project.
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| Speedo |
Dec 15 2025, 04:24 PM
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#3
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Senior Member Group: Members Posts: 563 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains
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QUOTE(rudedude @ Dec 15 2025, 12:26 PM)  There are a number of fuel injection components that also need to be fitted. Might be easier to put the webers you have for your project. Fuel pump swap, low to high pressure...and hi-press fuel lines (stainless already in tunnel) Fuel filter console Warm up regulator/enrichment solution What else? Swap 911 engine tin for 914-6 MFI tin Choice of aircleaners stock vs modified Configure horizontal trombone cooler with oil lines Maybe Ferg and Emory will weigh in...its their fault. : ) |
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| Speedo |
Dec 15 2025, 05:37 PM
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#4
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Senior Member Group: Members Posts: 563 Joined: 7-November 06 From: Boulder Member No.: 7,170 Region Association: Rocky Mountains
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I may have just figured it out. My tin has the MFI tube, and my HEs also have the warm up tube. No mods needed, other than some hose. : )
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| IronHillRestorations |
Dec 16 2025, 07:36 AM
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#5
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I. I. R. C. Group: Members Posts: 6,899 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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You also need the RPM transducer to activate the idle position solenoid on the MFI pump
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| stownsen914 |
Dec 16 2025, 01:47 PM
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#6
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Senior Member Group: Members Posts: 973 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
If you can just hook up the hose, that'll be easiest for sure.
If you want to replicate the Supertec style manual lever to replace the bellows on the MFI pump, it's not technically difficult, but would require a bit of engineering and fabrication. I'd think McMaster Carr or similar probably has a lever and cable mechanism, and you'd have to make a cover plate and cable mount to replace the warmup bellows on the MFI pump. |
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| zulu33 |
Dec 16 2025, 04:21 PM
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#7
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Newbie Group: Members Posts: 14 Joined: 24-May 15 From: Germany Member No.: 18,755 Region Association: Germany |
Hey,
Use the electric heater for the bimetall. It's faster anyway. Don't forget the relay. CheeRS Dirk |
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