Diff. 2.5 rods throughout the years?

I picked up some nice cleaned up 2.5 rods to go into my turbo 2.4 PT engine build for my 95 neon. I'm looking to pick up a set of matched 2.5 pistons to mate with the rods I already have. I've been told somewhere that they moved the wrist pin location up/down, or was that just 2.2 vs 2.5? Looking for 25+ lbs of boost in the neon project...so forged is almost a must. So where to buy reman pistons?

Thanks in advance.

Erik

[DaveR]

As long as the came out of a 2.5l SOHC turbo motor, the rods should all be same, no matter the year. They should actually be the same rods as the 87-87 SOHC 2.2l Intercooled T2 motor, the 90 T4 VNT intercooled SOHC 2.2, and the 91-93 DOHC 2.2 T3 motor. (the T3 rods got better bolts though, and the part number on the T2 rods is different, but the rods themselves are all the same)

The wrist pin was moved up in the piston on the 2.5l's to compensate for the additional stroke while using the same length rod.

Now my question is why would you want to put SOHC 2.5l turbo pistons into a DOHC engine? Why not just purchase some Wiseco forged pistons specifically for the DOHC 2.4 turbo motor, or you could probably get a set of stock SRT/PT turbo pistons (don't know the wrist pin diameter on those though), or I have a set of stock bore brand new Mahle cast pistons for the Mexican DOHC 2.4 turbo motor sitting here for sale. They take all standard 2.2/2.5 turbo wrist pins, rings, clips etc. In fact they look basically identical to the SOHC 2.5l Turbo Mahle pistons, except they have 4 valve reliefs to make for a nice non-interference motor.

[glhs636]

The early 2.5's were actually "tall deck" blocks with longer connecting rods
(they looked a little skimpy so I had some Pauter chromoly rods build for my 2.2 motor )

[OmniSRT4]

Quote:

Originally posted by glhs636 The early 2.5's were actually "tall deck" blocks with longer connecting rods (they looked a little skimpy so I had some Pauter chromoly rods build for my 2.2 motor )

He said they were all the same as long as they came out of a SOHC *Turbo* motor.

None of the tall decks are turbo.

On that note, the 6mm longer rods in the 2.5 tall deck are way too weak for any power. (worse than LW rods)

[OmniSRT4]

Quote:

Originally posted by DaveR As long as the came out of a 2.5l SOHC turbo motor, the rods should all be same, no matter the year. They should actually be the same rods as the 87-87 SOHC 2.2l Intercooled T2 motor, the 90 T4 VNT intercooled SOHC 2.2, and the 91-93 DOHC 2.2 T3 motor. (the T3 rods got better bolts though, and the part number on the T2 rods is different, but the rods themselves are all the same) The wrist pin was moved up in the piston on the 2.5l's to compensate for the additional stroke while using the same length rod. Now my question is why would you want to put SOHC 2.5l turbo pistons into a DOHC engine? Why not just purchase some Wiseco forged pistons specifically for the DOHC 2.4 turbo motor, or you could probably get a set of stock SRT/PT turbo pistons (don't know the wrist pin diameter on those though), or I have a set of stock bore brand new Mahle cast pistons for the Mexican DOHC 2.4 turbo motor sitting here for sale. They take all standard 2.2/2.5 turbo wrist pins, rings, clips etc. In fact they look basically identical to the SOHC 2.5l Turbo Mahle pistons, except they have 4 valve reliefs to make for a nice non-interference motor.

A more important question would be, are the 2.5 pistons the same as the 2.4 pistons (other than valve reliefs).

I ask this because the 2.4 pistons dont even reach the top of the deck when used in the 2.4 motor, its almost as if they used 2.5 spec pistons...

[cptn60]

Quote:

Originally posted by DaveR As long as the came out of a 2.5l SOHC turbo motor, the rods should all be same, no matter the year. They should actually be the same rods as the 87-87 SOHC 2.2l Intercooled T2 motor, the 90 T4 VNT intercooled SOHC 2.2, and the 91-93 DOHC 2.2 T3 motor. (the T3 rods got better bolts though, and the part number on the T2 rods is different, but the rods themselves are all the same) The wrist pin was moved up in the piston on the 2.5l's to compensate for the additional stroke while using the same length rod. Now my question is why would you want to put SOHC 2.5l turbo pistons into a DOHC engine? Why not just purchase some Wiseco forged pistons specifically for the DOHC 2.4 turbo motor, or you could probably get a set of stock SRT/PT turbo pistons (don't know the wrist pin diameter on those though), or I have a set of stock bore brand new Mahle cast pistons for the Mexican DOHC 2.4 turbo motor sitting here for sale. They take all standard 2.2/2.5 turbo wrist pins, rings, clips etc. In fact they look basically identical to the SOHC 2.5l Turbo Mahle pistons, except they have 4 valve reliefs to make for a nice non-interference motor.

Chrysler doesn't service the piston separately. Currently The PT and SRT versions are sold as an assembly with the connecting rod. No, there is no good reason for this. I dunno know about the Mex/2.4/turbo though; American dealers cannot order export parts without a LOT of paperwork.