Hey guys, first post here. I've had this '89 Town Ace for about 2 months now. Just got it titled in California...don't ask me how. Anyways, I love the van, it's my DD, but it's slow as hell. I also own a '93 Dodge Ram with the Cummins Turbo Diesel and when I opened the hood of my Towny I couldn't help but notice the fuel pump looks just like the one on my Dodge...only a little smaller. I found this video on how to really get the most out of the Cummins pump here https://www.youtube.com/watch?v=sv3f...EUkqA&index=14 and since it's obvious the Towny pump is a clone, I wondered if the same things would work.
Well, I didn't want to get too crazy because I don't want to blow up this motor, but just enough to keep up with traffic would make me happy. I'm happy to report my van is up to par with acceleration now. I only did one thing the same as that video, I turned up the maximum fuel screw ONE TURN. That's it. I didn't touch the fuel pin, smoke screw, star wheel or any of that. I simply backed off the lock nut on the fuel screw and turned in the screw 1 turn. It made a big difference in performance. I no longer have to floor the gas pedal constantly just to keep up with traffic. I feel this is even less stressful on the engine because I don't have to wind it out to 4k rpm anymore. I shift comfortably at 3k rpm now even while merging onto the freeway.
Anyways, I just wanted to share my discovery. I've had it like this for a few days now and I've noticed no issues. Coolent temp still never gets to halfway and it's 100+ degrees here in SoCal right now. My next mod will be a free flowing exhaust and then that's it for performance stuff. I'm actually very happy with the power level now.