custom efi

[texascruiser]

I'm thinking of buying the tbi setup from this guy. Any imput on taking an fj60 from crappy carb to tbi, and or this vendor would be highly appriciated. Dealership after rebuilding my carb and making it run worse than before say the carb is shot. 121k on truck. truck very hard to start cold, smokes white(didn't before rebuild, never has burn oil that I know of, leaks a bunch ), won't idle until completely warm, at 1800rpm starts cutting out and choking it saves it, I told dealer to replace 2nd diaphram and they said they did. They also said my vacum and egr checked out okay. thanks in advance.


jonh 87fj60

 

[brian]

white smoke is coolant, not oil.
i had an early efi(tbi) setup on my ride, till the 'puter got wet, now it has a weber and the efi is in a bucket under the bench. i hope the efi's are better now, the one i had never really ran good, when it ran at all.

 

[texascruiser]

It never smoked before the dealer rebuilt the carb. They also adjusted my valves at this time. Can adjusting the valves screw up the head gasket or crack the head? Is there another path for coolant to enter the combustion chamber?

 

[dd113]

Aftm EFI is sketchy at best. I have seen it work and seen it not work. It will cost a lot in time and money. just what vendor do you refer to?

Going to a dealer fo a carb rebuild is throwing money away. I would buy a rebuild from Jim C or Mark and be done with it.

 

[texascruiser]

customefis is the name I found them on this board. How do I reach jim c or mark?

 

[labartonmd]

Some of the EFI issue is that most of the ECU's are programed for 8 cylinders, not 6. You'll need to reprogram the OEM chip to work with a straight six. When you do the math, a cruiser 6 wants a carb between 300 to 350 cfm and most aftermarket TBI systems are way too much (600 cfm) for a stock motor. If you pop the bucks for a custom system, it should be just that--custom-- with all the EPROM stuff already worked out and an appropriately small Throttle body. The closest I've seen is Holley's TBI for the Heep six, P/N 501-12 which is over a grand.

 

[Yoda]

What I liked about customefi, was that he works with you to get the prom set up. The GM TBI is the same throttle body on the 4.3 and 5.7 L. It uses different injectors to get the right fuel flow.

I know he has done some LC efi systems, so he may have a prom already set up that works.

I chose to build my own system, but I am a subscriber to his site and used a lot of the info from there.

 

[labartonmd]

I'd say go for it! I have a GM TBI and ECU set aside for my cruiser; thanks for the recommendation; I'll drop him a note when I get to that point. The harness is the easy part. The EPROM is the critical issue.

 

[Gumby]

I've got a PROM burner and the programs, but I haven't done a lot of messing with it. I hear it's a lot like tuning an old carb. You burn one based on data you know, then you run it and fix things. there are EFI guys out there who do good work with cruisers.

White smoke can be a result of the weather. if it smells like coolant, you're fawked. If it smells like steam, it's just water vapor, a natural result of a well-burning fuel mixture. you can see it better when it's cold or humid.

 

[sledge916]

I have a costum EFS on my 77 fj40, works like a charm, never not started and not had any trouble since we figured out the chip, even comes with dizzy, the works, I started installing friday night and was driving sun morning, good weekend project. 5 stars

Sethro