Just thought you guys might like to see this.
This is a TBI that I have helped with (welded it), for a friend of mine, to change some things from previous versions. IIRC this is #6.
This will be replacing an existing 4 bbl TBI, that is very similarly made, just the fuel system was quite different. We hope the new fuel system layout will help reduce some pressure drop that happens when AE kicks in.
The man who says something is impossible, is usually interrupted by the man doing it.
Man that looks like a lot of work! Was it just the old style holly injector issue?
Very cool work though...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
No, the old 4 bbl is also made from GM TBIs. We think it was just too much injector for fuel system layout that was used.
The man who says something is impossible, is usually interrupted by the man doing it.
Cool throttle body!
Glad to see someone else's work bench looks as bad as mine.
Interesting.
For years I've wanted to build a two or three TB intake using the smaller 2bbl units found on 2.8 truck engines but I never thought about a dual bore unit like that. The smaller bore should be better for response and would be less likely to allow fuel to drop out of suspension provided you can tailor the AE curves correctly. I wonder if there's any advantage to swapping to late / big block injector pods and using pfi injectors with fuel pressure as high as possible to keep droplet size small?
Very interesting indeed. I'm intrested in how you connected the throttle linkage. Do you have it set up to where both shafts open at the same rate, or do you have it rigged up like a old 4v carb with mechanical seconairys.
79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy
93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver
99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.
Posting Permissions
Reply With Quote
Bookmarks