SRT crank or "Regular" 2.4L crank?

[ShelGame]

Is there any difference (err, advantage) to the SRT-4 crank over the standard 2.4L crank from an NA stratus? Obviously, the crank trigger is different - which I don't care about since I won't be using it. I found an SRT crank at a decent price, but I don't know if there's any reason to get it (I already have a 2.4L crank from my Stratus engine...).

[TurboGLH]

I don't believe so, but quantify "decent price". Depending on that, it may be worth it just in case they did have some better qualities.

[SebringLX]

I'm pretty sure there aren't any differences in the crank. I upgraded to SRT-4 pistons, rods, rings, etc.. but kept my stock crank, and had it all balanced.

[ShelGame]

$25 1st bid, $50 B-I-N. It's on eBay...

[Speedeuphoria]

the trigger pickups are different, the new stuff has NGC code. The crank position sensor is moved.http://www.bstockum.com/turboblock2.html

[contraption22]

I don't think there is any real advantage as far as strength.

[rbryant]

Any chance that the quality control might be higher on the turbo units? If I was running the production plant I would probably bin them and put the best ones in the turbo bin.

-Rich

[contraption22]

According to the Hot Rod magazine on the 2.4 turbo engine in 2003:

"Earlier 2.4L engines use a crank counterweight cast with eight integral reluctor windows for the computer's fuel and spark timing. The new 2.4 uses a separate machined wheel with 32 windows fastened to the rearmost counterweight and is used with a more advanced computer. The new cranks have a machined pad for the reluctor and do not have drilled rod pins. The old block can be identified with a pickup midway down the rear of the block, while the new one is nearer the flywheel. Also note the one-piece rear main seal; Miller makes an installer tool."

"The 3.98-inch-stroke crank is a nodular iron casting, but with increased surface hardness as compared to NA engines. It's retained by an iron bed plate that incorporates all the lower halves of the main-bearing journals. The plate is located on dowels and must be tapped into place with a rubber mallet, then torqued to 30 lb-ft plus 90 degrees on the mains and 21 lb-ft on the outer perimeter bolts. Mopar nonaerobic sealer PN 4773257 must be used between the block and the bed plate. The bearing material is aluminum-tin alloy on a steel backing, and a contoured thrust surface was added to the thrust bearing."

Complete article here:
http://www.hotrod.com/techarticles/engine/113_0309_2003_dodge_neon_srt4_engine_overview/index.html

[SebringLX]

Note "earlier". I believe the newer NA (04+) are the same.

[contraption22]

Note "earlier". I believe the newer NA (04+) are the same.

I believe you are correct. Most of the improvements to the '03 Turbo engines were carried over into all 2.4's in 2004-up.

[t3rse]

you can buy new srt cranks for right at 100$

[Ondonti]

Wanted to mention that I would not bet $ that there a difference in the surface hardness between the cranks.

I know mitsu cranks seem to have a public relations friendly crank nitriding WHICH most people now believe never actually was performed.