Have not posted here in awhile really, serves to keep in practice. generally a adjustable cam pulley on a single cam will move your power band higher or lower as opposed to “making” more power. helps to dial the package in to say match gearing and that sort of thing.Good to have but don’t look to it for huge gains. A dialed in package though is worth the expense. On a twin cam however different story for sure....
Balance shaft were always the first to go back “in the day” dating myself........ They serve the sole purpose of cancelling harmonics,if you are ok with feeling your engine then drop them out. ( bracing for the rebuttals ) Remember to block off the oil supple hole to the shaft assy or you will be wondering where your oil pressure went. Tap the hole and use some locktite with a set screw to plug the hole. The restrictor you noticed when doing the head gasket.... leave it there. is intended to restrict upper end oil on roller cam engines, just make sure it is clean and not gummed up.. They make some very nice bearings now adays... don’t skimp overboar and compression will help, but has to be a balance, too high a comp and you will be stuck at the premium pump at best. Keep the overbore within reason If you are going to have the head done, FWD performance used to have +1mm stainless swirl polished valves nice pieces. a three angle seat when they put the valves in new guides and good seals. mopar used to offer a after market spring , they were not very expensive as i recall. Not needed really if you are just putting around.. but if you are driving harder. Used to throw followers under high rpm once in awhile, not after the spring. consider also the lash adjusters being replaced, more expensive though. When you have guides put in and you are pre-emptive/paranoid such as myself... they can machine the guides with retainers to make sure the guides never “drop” was not expense when i had mine done. James Richardson That would be the Fidanza one, correct? Did you use that performance cam initially without the adjustable cam spocket? I'm curious whether the performance was mainly increased by the cam itself or the sprocket. Still awaiting some feedback on any other upgrades like oversize pistons or milling the head... David >On Thu, Jun 21, 2012 at 12:40 PM, David Salamone ><[email protected]> wrote: >> 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 ___________REMOVE-FOOTER-WHEN-REPLYING_________ ShelbyDodge mailing list [email protected] http://www.imagilist.com/mailman/listinfo/shelbydodge
