>Have not posted here in awhile really, serves to keep in practice. Most of the SD mailing lists have been pretty quiet lately, I was hoping this post would wake things up a little..
>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. I understand, if it doesn't cause any improvement I could always use it when I redo my 1987 Shelby CSX. >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 ) I wouldn't have a problem with that. Being it's a minivan it can use some "remasculating" which is why I put on a Flowmaster muffler for a deeper, improved sound and at a great drone at the right rpm. >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. I remember seeing some tips Johnny Spiva posted on his polybushings.com website. >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.. Some people I've spoke with said it's a good idea to remove it to improve upper oil flow to the cam. Can there be too much oil pressure on the upper end without it? >They make some very nice bearings nowadays... don’t skimp That is one advantage we have today that wasn't as good in the late 1980's & 1990's. >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 What would be a good amount? 30 over, 40 over, etc. What style of pistons for this application? >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. I remember something about people using a new technique with using a followers or springs from a PT Cruiser. I wonder if that would apply for this combination? >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. I can ask about that when the machine work is done. Thanks again for the ideas. David >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 ___________REMOVE-FOOTER-WHEN-REPLYING_________ ShelbyDodge mailing list [email protected] http://www.imagilist.com/mailman/listinfo/shelbydodge
