Cm Valve Event Timing

Filing this one is a bit difficult, simply because I need to know about OEMR and Mopar Performance (therefore mod) parts!

What I'm trying to find out is the timing of valve opening and closing events for the OEMR camshafts (I have the 1989 RENIX, 1999 HO, and 1990 258, I'd like to get info on the old 199 and 232) and all the Mopar Performance sticks (P/N P4529228, P4529229, P4529230, P4529231, and P4529232). I'd need to know whether this was measured at .050 or "advertised" (usually .004-.006 of LOBE lift) and I'd also need lifter and lash information for P4529231 and P4529232 - I think they're solids.

Can anyone help on this? I just got off the phone with MPP/Tech in Michigan, and he *said* he didn't have anything "but what's in the catalogues." I'm sure there's SOMEONE here who's gotten hold of one or more of these bumpsticks and measured them out, right?

5-90

Re: Cam Valve Event Timing

This'll partly answer your question:

http://www.angelfire.com/my/fan/Jeep4.0Camshafts.htm

I'll need to tap into my Dino Dyno to get the other details.
All the MP cams that you mentioned are hydraulic flat tappet. Advertised duration is 240, 248, 256, 260, 268 degrees respectively and lift is 0.43, 0.44, 0.45, 0.46, 0.48 respectively. Lobe separation angle and intake centerline are both 108*.

Thanks for the chart - but I already have "cam cards" from most of those manufacturers, and a whole boatload of cams that aren't even on that chart (and a few that Greg Friedman doesn't have yet, either...)

If you've got numbers on the OEMR 199/232 bumpsticks and on the MPP parts, that's mainly what I'm after here. Getting the separation/duration/lift on the MPP parts is a help, tho, and I'll see what I can work out with that. If you don't mind my asking, where did you get the info, or is it off your workbench?

5-90

Here are some specs on a 1999 HO cam
Valve lift-0.405
Intake Valve Timing
opens-12.4*BTDC
closes-60.9*ABDC
EXhaust Valve timing
opens-49.8*BBDC
closes-29.2*ATDC Valve overlap 41.6* intake duration-253.3*
Exhaust duration-259*
I don,t know if this will help ?
Wayne

Wayne -
Thank you, but I've already got those specs - they were in MOPAR's Jeep Engines book...

I just find it funny that I couldn't get an answer from MPP Tech - you'd think they'd know (and be willing to tell...)

5-90