I had a 1989 Dakota (with the common-block 2.5 not the Magnum.) I installed the "max-torque design" cam P4452763 and an adjustable sprocket from FWD Performance. (Note: cam is for "slider" style followers, not the rollers.) Made a world of difference. Wish I still had that truck...
On Thu, Jun 21, 2012 at 12:40 PM, David Salamone <[email protected]> wrote: > > Well it looks like the bottom end of the engine in my 1994 Voyager minivan is > going bad and will need a rebuild. I initially thought it was just a > headgasket going bad, but the significant oil blow back issue continued after > the headgasket was replaced so it looks like one of the cylinders is going > bad. > > It's original 1994 2.5 was replaced years ago with a low mile 2.5 EFI motor > that came out of a wrecked 1989 Spirit. It's served me well over the years > and I'm looking for some tips on not only rebuilding but adding some moderate > enhancements while I'm having it done. > > I've got a good local turbo Dodge guy to do the work, and I was going to > looking for some ideas on a good combination of parts & tips to make it > reliable, durable and enhance the performance. It's currently a fairly stock > EFI motor and I don't want to go through the significant expense & effort of > trying to add a turbo & get it to work with 1994 electronics. > > When the cat went bad a while back, I used the opportunity to add a 2.5" > exhaust with a Flowmaster muffler all the way back with (just for fun) a > split set of dual tips coming out the back. The EFI manifold was only 2" so I > might try to get the manifold opened up so I no longer have the restriction > at the downpipe of going from 2" to 2.5". I've heard a good machine shop > could open up the EFI manifold and make it work with a 2.5" donut & downpipe. > > Since I've got to do the bottom end, I was thinking of finally removing the > balance shaft assembly. We also spotted an oil restrictor when we were doing > the headgasket, I've heard it's good to remove those to improve upper oil > flow. Thoughts? > > What about enlarging the cylinders for a larger set of pistons for improved > horsepower? Any ideas on size & style? > > I think being an 1989 2.5 it's already got a roller cam. It was suggested to > freshen up the valves since we were already there (for a better balanced > package). Any thoughts on some affordable updates to the top end? > > We're going to be starting the work pretty soon so I'd like to get a solid > game plan together. Thanks. > > David Salamone > Positive Impressions > [email protected] > ___________REMOVE-FOOTER-WHEN-REPLYING_________ > ShelbyDodge mailing list > [email protected] > http://www.imagilist.com/mailman/listinfo/shelbydodge ___________REMOVE-FOOTER-WHEN-REPLYING_________ ShelbyDodge mailing list [email protected] http://www.imagilist.com/mailman/listinfo/shelbydodge
