 Converting IDF/DRLA to throttle body |
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| cgnj |
 Dec 3 2024, 10:01 PM
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#1
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Senior Member  Group: Members Posts: 645 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None 
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I have always wanted to do ITB FI for my 2270. I found a box in my stash of parts with a DRLA 45 with one of the air bypass screws stripped. I found this thread on STFSTF IDF/DRLA to throttle body.. I guess I would have to block off everything above the throttle plate, and machine my manifolds to for injectors. Feedback on this idea is appreciated
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| technicalninja |
Dec 3 2024, 10:43 PM
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#2
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Advanced Member Group: Members Posts: 2,121 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region
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Once you get the venturi and the booster out you won't have to block anything off.
You WILL have to block any passage below the blades off. Easy button is screw in the air bleed and the idle mixture screw until they seat. You've got one air bleed screwed up, might cause an issue... Two 45mm throttle blades is plenty of flow for 200+ HP. Will you be using two carbs as ITBs? The only issue I can see is the damaged air bleed. You should be able to use the air bleeds to adjust idle speed along with ignition timing idle control. Properly adjusted this fairly old method will work FINE! You will need a TPS. You won't need an IAC (as long as you solve your stripped air bleed). Edit: There is a chance you could use the mixture screw as an air bleed for idle control. You would have to seal the stripped air bleed. |
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| mb911 |
Dec 4 2024, 11:16 AM
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#3
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914 Guru Group: Members Posts: 7,370 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
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QUOTE(technicalninja @ Dec 3 2024, 08:43 PM)  Once you get the venturi and the booster out you won't have to block anything off. You WILL have to block any passage below the blades off. Easy button is screw in the air bleed and the idle mixture screw until they seat. You've got one air bleed screwed up, might cause an issue... Two 45mm throttle blades is plenty of flow for 200+ HP. Will you be using two carbs as ITBs? The only issue I can see is the damaged air bleed. You should be able to use the air bleeds to adjust idle speed along with ignition timing idle control. Properly adjusted this fairly old method will work FINE! You will need a TPS. You won't need an IAC (as long as you solve your stripped air bleed). Edit: There is a chance you could use the mixture screw as an air bleed for idle control. You would have to seal the stripped air bleed. Not necessarily. I use my triple Webers as TBs and don’t use a TPS |
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Posts in this topic
cgnj Converting IDF/DRLA to throttle body Dec 3 2024, 10:01 PM
VaccaRabite I mostly agree with Ninja - except on the part abo... Dec 4 2024, 05:59 AM emerygt350 Yeah, for simplicity the single can't be beat.... Dec 4 2024, 08:38 AM technicalninja I HOPE they don't use stock Miata throttle bod... Dec 4 2024, 09:49 AM technicalninja
Not necessarily. I use my triple Webers as TBs an... Dec 4 2024, 12:20 PM
emerygt350
[quote name='mb911' post='3180180' date='Dec 4 20... Dec 4 2024, 05:57 PM
mb911
[quote name='mb911' post='3180180' date='Dec 4 20... Dec 4 2024, 07:57 PM GregAmy If you're reeeeeellly interested in doing this... Dec 4 2024, 04:24 PM cgnj Actually, What started me on this was many years a... Dec 4 2024, 09:48 PM GregAmy If GregAmydecides to sell his stash, I would be in... Dec 4 2024, 10:07 PM JamesM
On a big-cam 2.4? Yeah, probably. But on this o... Dec 5 2024, 01:50 AM JamesM to many posts to respond to each one individually ... Dec 5 2024, 02:31 AM GregAmy Im going to guess your 2056 is built to somewhere ... Dec 5 2024, 08:50 AM |
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