Replacing with either chevy celebirty or century and I was womder are those plastic gears for timing that the duke is rumored to have inside these 2 motora aswell? If so are they hard to swap? Im abput to purchase my new temporary motor while I wait for thw big swap and I was concerned about that. I want to put a new oil pump in used motor ( seeing as thats y mines blew) and I also wanted to replace the timing gear and belt or chain whichever it has.. while its already out n I just wanted some info on it. Tried to seacrch but didnt really find the level of detail that made me comfortable. Pics or suggestions would be nice. Please hold the motor swap comments this is the direction im going I just need intel. Thanks
Only 91-92 engines use timing chains. Before you ask... No you can't just switch between setups. Chain require a cam ground for clockwise rotation and other mods.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Ohhh ok. So ik assuming the process of removing the gears is the same as a chain excecpet there isnt space between the gears. Delicately remove top and bottom as 1 piece and insert 2 new together or am I wrong? Trying to figure best way to go about it all. And is the oil pump apart of this assembly?
I think chang gears is easier, put them on one at a time with the marks lined up. I have seen aluminum after market gears to replace the fiber ones. Larry
91-92 version is a DIS engine but major changes for chain setup. if you want this setup then use 91-92 VIN R engine. Even then need to check because some 91-92 cars may have old design.
if you have 86 and older... then forget it. little to nothing will work from 87-92 versions. See my Cave, Duke Quick Ref
Interesting.. my car is an 88 2.5 -5speed. Definitely curiousvabout the aluminum gears to replace the fiber 1s. Vanyone know about the oil pump setups? Also going to look into the 91v 92 just didnt bc want to get into wire hacking or ecm swaps. Ill read up hopefully its not a big deal
Just use gears setup... Your balancer/oil pump unit are driven by crank gear and is next to go bad. When that happens, damage cause often means get a new engine.
Never bothered anyone the last 50 years before when almost all vehicles had gears and chains. Sht the racers used a gear to gear setup that held up quite well under several hundred HP at the track. As far as changing over the belt to gears and chain set up Why? a lot of the cars over the last few decades have used it with no problems as long as the people change the belt at the times recommended and the engines were not interference type.
Steve
------------------ Technology is great when it works, and one big pain in the ass when it doesn't
Ok, so I still need further explination on this oil pump situation. Kinda has me lost. Is there a pre pressed assembly that is available for purchase..? Im buying a junkyard motor and id like to have that done b4 I drop it in. Reason im so pressed is bc my last motor just blew bc of the oil pump dying. So id like to put a new 1 in.
The gear presses onto the cam. A pre-assembled cam/retainer plate/gear won't save you much time, since in order to pull the cam you'll still have to pull the timing cover, valve cover, lifter cover, lifters, and pushrods, oil pump cover + oil pump driveshaft, etc.
That said, all of these are good things to do to a used engine before dropping it in.
