It's been a while, so i'll give this post some "CPR", Intake manifold from swapmeet $60 8 quad 4 injectors from junk yard $40 carb.throttle body $0 Megasquirt ECM and relay board $200 Fuel rail material $10 misc wiring and stuff $50 sensors $25 $385 roughly I am currently building a sysem for the 455 in the Regal, and will be using the version 3PCB, Megasquirt II, IAC, and spark tables, and other new stuff. Dean
Here are some pictures of the EFI system I have currently under construction for the 455 in the Regal. It will be utilizing a Megasquirt v2.2 board, BBK TPI 58mm throttle body, T/A sp-1 intake, 30lb injectors, custom made intake plenum, fuel rails, plumbing. There is still much fabricating to do, so the parts in the picture are unpainted and unpolished. A full report will be given when the system is functioning on the vehical. Don't expect anything less than 110%!! Dean
Looking very good. It gives me more inspiration for my EFI conversion that I'm collecting parts to do. Is that TB to carb adapter made up of plates welded together? How do you get to the bolts/nuts that attach it to the intake?
Dean - MegaSquirt(or SDS) definitely seems like the way to go!! :Smarty: Do you happen to know how the MS system would work with the integrated 4L60e or 4L80e?? I have a '95 G30 Chevy van that I'll be transplanting the 350" TBI and 4L80e trans into my '71 GMC ramptruck at some point in time. Although I'll be able to save the entire wiring harness from the van to use for the TBI & tranny controls, I'd love to know if the MS setup will work with the 'e' trannies? Part of the reason I'm wondering.....I have an '85 TPI setup from an IROC and would like to upgrade from TBI to TPI with the above engine/trans. The MS would address the engine quite capably - I'm just uncertain how it will play out with the trans. Also, are the Buick V6 injectors rated higher than the Quad IV's?? I can never remember whether the Quad IV's 'A' or 'D' code was the HO version. **Just thought of another question for you....Do you think the (90 only)4.5l or all 4.9l V8 Cadillac TB's would work, since it is also port FI?? Thanks!! :bglasses: BTW...your conversions have come out fantastic!!! :3gears:
69RivieraGS, The intake plenum bolts to the intake from the inside, the bolts are accesed through the throttle body hole. I actually used short carb studs to mount it. It is made of 6x6 extrudded beam, I had to section an inch out of the hieght for hood clearence, I welded a plate of the same mateial to the front and back to box it in. GSXMEN, I do not know if someone has developed code to control the "e" tranny with Megasquirt yet. I think Bowling&Grippo might be working on a seperate stand alone controller for those trannies, but I am not positive. Check the message board: msefi.com. The quad 4 injectors are so far, the largest I have found, that are plentifiul and cheap in the salvage yards, as far as codes go, I do not have any information, I just looked up the part number on the injector. So far all quad 4 injectors I have pulled have had the same part number that shows them as 30lb units. Maybe I just got lucky, haha Dean
There's some info on it here: http://www.megasquirt.info/4L60E/index.html It's still under development but you can see the comments on it in this forum: http://www.msefi.com/viewtopic.php?t=4699&postdays=0&postorder=asc&start=0
What kinds of cars are these coming from? Is that what you're using as the port injectors in your converted SP1?
Nice megasquirt article I came across the other day: http://grmotorsports.com/news/10200...n-with-diy-fuel-injection-from-megasquirt.php - Freed
69RivieraGS, The Quad 4 engine can be found in the late 80's and 90's GM front drive cars, like Oldsmobiles, Pontiacs, and the like. I will be using 8 Quad 4 injector on the 455 to start with, they were only $5 each, so the price is right. haha Dean
Hmm. Ok. I found some info on it here: http://en.wikipedia.org/wiki/GM_Quad-4_engine Look under LD9. It mentions they switched from low to high impedance injectors. If somehow you got some low impedance injectors make sure you use the flyback board since you're using the v2.2 megasquirt main board.
Just FYI: "High impedance injectors (usually about 12-16 ohms) can take a 12 supply directly, without a form of current control. Low impedance injectors (generally below 3 ohms) require some form of current limiting." from: http://www.megasquirt.info/v22manual/minj.htm
69RivieraGS, ThAnks for the info, I was aware of the "z" factor on the injectors I have already collected, they are low z ones confirmed by the part number. I have 16 injectors total, and the 8 best are going on the 455. I already have the flyback board installed on my ecu. I have run 8 of these injectors straight off the ecm with the PWM with no problem exept for Q1 running warm. But the flyback board will give me "piece of mind" that I don't overheat somthing far far awat from home. I have 2 complete v2.2 board ecm's up and running, one is in My 88 Chevy truck "as seen on webshots", the other I have kept as a backup unit. But since I do not use the truck on the street anymore, (it was basically a Megasquirt test bed) I will put a carb on it so as to keep a spare ecm in the Regal when driving. Note: I have not had ANY reliability issues with the two ecm's I built, but you always have to have spare parts, just in case. here is a pic of one of my Megaquirts ecm's, the flyback board is attached to the outside because I just could not get it to fit inside.
It will be running soon. Just have to mount the fuel pump, run new fuel line, install manifold, wiring. Dean
