If there's room for a trigger wheel on the crank, switching to DIS would be an improvement.
If there's room for a trigger wheel on the crank, switching to DIS would be an improvement.
What would the best was to go DIS on a project like that? Isn't there a ford application that used something similar to it?
GM had a 2.5L DIS on the Grand Am. It used the 700 model TBI. If you use this, many say the data you read is not ever correct. In 89 or 90, GM issued a bulletin for spark knock and hot fuel handling that had you update the Mem-cal. They told the tech to put a sticker on the car. It stated when using a scan tool, as Tech-1, to enter 1989 as the model year. They put 89 back to 87 and 88 but the 87 and 88 data streams were different. Be aware. Some had you put in a hi pres fuel pump. The GM parts should catch this for you. DIS was placed in the black near the same place as the old dist. Nice set up. The wires were to long. I'd use some good 8.8mm msd.Originally Posted by DOCBAWRENCHTURNER
The OEM applications with DIS put the crank trigger wheel inside the block. In order to use an OEM system you'd need to change the crank and block. It's possible to build a bolt on trigger wheel for the front of the crank and use the ecm from a distributor based system. Simple change to three variables in memcal and DIS works with non Hall effect distributor calibrations. Here's a company that makes a DIS retrofit kit for postal vehicles with TBI: http://www.jasperinnovativesolutions.com
Page 7 of their catalog shows the kit:
http://www.jasperinnovativesolutions...ts_catalog.pdf
Then you'd need a fuel pump, throttle body, ecm, sensors, and wiring harness. The 7427 is probably the best choice for controlling the engine due to water resistance but it's possible to put any ecm in a sealed box.
2.5 TBI engines were available in a number of different vehicles and in a couple of different flavors, as mentioned above. Does your engine use the cross flow head or the older head, with intake and exhaust on the same side?
My boat engine has exhaust and intake on the same side, I am under the impression that it is a 1983 model as is the rest of the boat, although I may be wrong. I have been looking for a place to purchase that DIS kit you posted, do I need to speak with a distributor?
I believe you can buy directly from them. They supply parts to the post office... maybe you can order one through them? ;)
You know, I wasn't trying to set this up (really!) but we can buy from Jasper Engines and Transmissions. Maybe they'll let me buy the DIS kit? lmk if you're interested and I'll check it out.
I'm very budget minded, and this isn't my primary project. But I am VERY interested in what something like this would go for.
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