3.0 (H motor) 24 valve.

[DustyR/T]

I was thinking about this. I know these engines share the same water pump as the 12 valves. The SOHC 24valve design would simplify timing belt and I'm almost positive the oil pump is the same, assuming crank sproket is the same. And The timing cover looks identical. Is it in any way possible to put the 24valve heads on a SOHC block and get a wiring harness from a 2.5 avenger or early stratus? I know the biggest problem is going to be the engine electricals. Like I said though, swapping a 2.5 avenger ECU it can be done.
It says it all here. If so, I can get the heads, manifolds, minus the valve covers for 200 bucks. Does anyone think this won't work?

http://www.rezlo.com/Pages/Work/6G72/6g72.htmhttp://www.rezlo.com/Pages/Work/6G72/6g72.htm

[mwinkle353]

Go to the local parts store and have a look at the timing belts of both motors. You'll be surprised at what you see.

[yogurtslinger]

what will you see?

[Ondonti]

Not the same.


One question I have, is can you swap the cam gears with a little work? then run the sohc 12 valve belt (or whatever size is needed to fit).

2.5L ECU makes crap for power btw.

[DustyR/T]

well is it anymore programmable than the 3.0? IF not why not a stratus ECU and harness?

[87turbodance]

ECU is the least trouble for me. What kind of car would I find a set of SOHC 24 heads in?

[roguetrip]

2000+ eclipse for the 3.0 SOHC 24v, alot of the 95+ dodge avengers had the 2.5 SOHC 24v's

Instead of the camshafts, why not the crank sprocket and idler if its different? Why touch the heads if you don't have to, especially if you have to degree the cams.

if your gonna do this, why not swap the whole motor/ecu/harness?

[Ondonti]

im still wondering if its possible to bolt the 12 valve cam gears up to the sohc 24v cams. If it needs some machining that is fine with me. My only guess is that maybe the 12 valve tensioner will not be tight enough to turn those 24v sohc cams

Not useful for me but it would be useful information.

[87turbodance]

Hmmm. I might go pull a couple 24V heads for fun. Does anyone kow if there is a difference between the 3.0 24V and the 2.5 24V heads?

[T3Neon]

Quote:

Originally Posted by 87turbodance Hmmm. I might go pull a couple 24V heads for fun. Does anyone kow if there is a difference between the 3.0 24V and the 2.5 24V heads?

The cams in the 3.0 24V engine are tad more aggressive (more lift & duration) for the larger motor. That's about it.

Scott

[mwinkle353]

Not to mention that the front cams have a 110* centerline, compaired to the rear cam centerline of 106*.

[Ondonti]

I think all 24v sohc have that problem though.

The combustion chambers are the exact same size.

[T3Neon]

Quote:

Originally Posted by Ondonti I think all 24v sohc have that problem though. The combustion chambers are the exact same size.

Yes both the 2.5 and 3.0 have the cams at different centerlines.

Scott

[DustyR/T]

but the swap is possible? The conversion from the (H) motor heads to the (3) motor heads is possible? Even if mechanically, I would invest in rewiring for the DIS system. Look at the HP differences between the 3.0's. The H motor makes over 200 where the 3 motor makes 141. I'm sure the valvetrain and manifolds had something to do w/ that. Not to mention doing this would make it easier to convert to better exhaust due to the triangle bolt pattern on those motors for the exhaust manifolds. Throw me an opinion.

[87turbodance]

HMM get some turbo cams ground and you could make quite a monster without destroying all your bottom end power. I think I'm going to pickup a junkyard motor soon to do some expiriments over the winter