Inliners International Forums General Discussion Hi Performance Help needed to change 4 piles into 1

I'll beat efi diy does another tune on somebody elses vehicle first!
LOL!

MBHD

Your right - my own....

Beater is stubborn enough that he'll work it out... got to give him credit for the tenacity...

Beater so - times a ticking.... any progress... that convention 250's getting closer to being running on TBI.....

Go Beater Go!

MBHD

I spent yesterday on the MS project. I found a problem that I think is in the GM adapter board. When using the stock ECM the test truck starts and runs as it should. When the MS is plugged It does not communicate with the laptop. When I remove the GM adapter board and plug in the Stim board it connects to the laptop and seems to work fine. I plugged in the GM adapter board in the truck without the MS and checked to see if I was getting 12v where I thought it should be, DB37 pin #26. I wasn't, but I was getting 12v on several pins where I don't think I should, pin #s 20, 22, 23, 24,25, & 29. I will need to check out GM plug to see if I have some extra solder on the GM plug that I didn't remove when I pulled it from the donor ECM. It won't get done before the demo at the convention. Beater

Beater

Take a picture of the top and bottom of the GM adapter outside the case, and post the pix here. I might spot something that you may miss.

Here are some Pictures Of the adapter board. Thanks, Tom

I'd touch up the soldering on both connectors - looks like you have some cold joints. If you want me to take a closer look mail it here...

I have some good experience with soldering and board repair.
It looks to me like a few of the solder joints may have too much solder. Notice how some of the traces on the brd are isolated from the rest of brd by dark lines. Look where they go to the soldered pins and excess solder could cause a solder bridge .

I use a hand operated " solder sucker" or fine copper mesh to suck up solder.

You had said there was power where there should not be. Maybe this is it. Goodluck Tom

Thanks guys! This was the first piece I did. Maybe not enough solder in some spots and too much in others although I was being careful about bridges. Maybe too cautious. I got better toward the end. I'll go over it and clean up joints. I tested the main board with the stim again this morning and all still seems fine there. I wont have a chance to work on it for a couple of weeks. I have to go to SOCAL. While the iron is hot should I add the other "fly back" circuit? Step #69 I think. Beater

Tom,

Any progress on this?

No, I was in SOCAL for a week and have been battling weeds higher than my fences since we got back. I am afraid we are looking at a bad wildfire season in the west this year and closest fire station is several miles away. I still need to check all the solder joints on the adapter board and re solder any that don't look good. If that doesn't work I'm going to order a new one and do that part over. It is not that expensive.

How did it go at the convention? Did you "WOW" 'em? I really wish I could have been there to see it all again. Tom

If you missed the convention. There was a good eye opening experience. EFI got the motor running in quick order with the TBI. The neat part was when he tuned it from the classroom with the video projected so all could see, the engine was outside and you could hear him change the tune.

Cool, so who won the 250 engine?

MBHD

Too bad we ran a bit late on getting the engine fired ...kind of ran into the banquet dinner.

That was when I realized just how old the club membership is ... I bet the average age at the dinner was 70.

Sounds neat, especially the "remote tuning" part.

Shoot, I should have been there I could have helped lower the average age by a smidgen but not have helped the average IQ much. That sounds like a bit more high tech than our Bonneville show. It would have been nice to have a wind break! But even in adverse conditions Marc was quick on the keyboard and got the 270 running smooth and running at idle in-spite of a vacuum leak. I hope someone made a video of the convention conversion. Tom

The '68 flatbed is getting a fuel tank transplant in preparation for the TBI conversion. The tank is from a '90 Suburban. Beater

The tank is in. Filler neck and vent done. Pump in tank just need to extend wires and fuel lines to engine and add the O2 sensor. A bit of wiring and I'll be ready to try the stock ECM.

Hooray for progress.

Hasn't your four piles into one turned into 5 piles into 6?? I reduced my project count by 50% and gained a car. I'm blaming it on modern math.

Funny that you should ask. I, in an attempt at pile reduction, offered the Suburban body to a guy I know to use as a parts donor for his Suburban. While trying to figure out how to get the body to him and retain the frame and running gear he offered to trade a running 454 powered '81 1 ton 4X4 club cab with a dump bed for the Suburban. That would bring into play My '50 GMC 3/4 ton previously not in the pile count. As the 1 ton would become a dump trailer and running gear for the '50. Anyone need a BBC? So we are somewhere in the 8 piles into 3 range now with little real progress being made. I tried to put a little gas in the new tank setup on the '68 and discovered a design flaw. It seems that gasoline like water prefers to run down hill. Beater