Not to make this a "I know more than you" match....but YES...it is the same 2.4L. The rod length is what changed the C/R. And although knock does have a great deal to do with many forced induction problems...the strength is AS important, as knock can be controlled. The same concerns are said for the compression/boost pressures such as head lift issues, weak head/main bolts, weak valve trains and weak pistons/rods and bolts that start throwing around faster and harder at higher horsepower and rpms....

Thanks for the info on the internals. Sounds like they are pretty weak. The bolts= I will probably have to get that information from the dealer through parts search. ARP is near here and may be able to get that info too from them or tell me if they already have stronger bolts available.

 

No news yet. They are SUPER busy making kits for the new Camaro and a couple other new cars. It might be a couple more months before any real planning even gets started. I myself have not yet been convinced that I want to go this route yet. I still have way too many questions...but the latest news re: Diablosport really helps.

 

You misunderstood me and may have a different meaning of the word "same". If the engines have different connecting rods, they are not the same. I was simply trying to say even though they may be physically interchangeable, a high compression 2.4L thrown into an SRT-4 will not work very well.

As far as detonation, I came from the SRT-4 world as well. How many people blew up motors because the tune was bad compared to people that had motors who could not handle the power? It always seemed a bad tune, including too much boost, destroyed motors via detonation vice too much power. The SRT-4 motor could handle lots of power, but the transmission input shaft or the clutch would always go first. Wouldn't you agree?

I wouldn't think the Hemi internals are weak, they are just not made for big boost. We also have a cast crank, so if big power is to be had, I would go for a forged unit.

To the other post I made, yes, an aggressive cam would be needed along with a nice set of heads to make 500 HP. But, if we get a really nice gain with the Diablo or other tuners, a mild cam may do the trick.

And lastly, if I won the lottery, a twin turbo/low compression motor would be my choice over a supercharger.

 

So, can you turn off ESP? Can you turn off MDS? Can you light up the tires in 1st? 2nd? 3rd? How does it launch? Tell us something!! Please!

 

I hear what you are saying....however....the majority of the guys I know of who had engine trouble was not from knock. It was from pressing the limits too far of the engine strength. The majority of us also upgraded the clutch and shafts. I have seen and heard it all from broken/cracked bed-plates to bent rods and spun bearings. Not that knock is not a problem but it is easily managed. Just too much oomph as the car was easily good for 450HP (at the wheels) but the big problems came out at 500hp. At this point of any build, knock should have already been controlled or eliminated by a person who knew what the heck they were doing.

Twin turbo..... Depending on the set-up it would definitely be vicious! (Turbos are always better) If I had my way AGP Turbo would be setting me up.

 

Were you apart of that notorious SRT-4 forum? I still am, same SN.

What turbo were you running on yours?

 

Yes....srtforums.com Is there any other one? LOL
VERY ROWDY GROUP!!! I am still on there but not active.

I had an AGP GT-3076R Full bling kit powered by an SCT Flash and running meth with a fully built engine and all supporting mods. I got rid of the car because I got a ticket and had to see the ref. It was a bummer but I like my truck too....and still have the itch for more from it.

I was also a member of a car show team so the car was clean and ready for more. If you recall a thread about a year and a half ago about the Seibon GT Style hood that came out..that was me who had it made. I am thinking about a nice vented carbon hood for the truck too but will plan that out later. SEIBON is a sponsor of the team so they do alot of great stuff for us. If you get a chance check out some of our cars at highendperformance.net. The forum section on the site has some really great pictures from the shows and the quality of cars the team has. Look for te threads labeled SEMA, Nissei and Hot Import Nights. The team dominates!!!!

 

Admittedly, I don't have any experience with the Neon SRT4, but wouldn't a shorter connecting rod, to lower the compression ratio, also reduce the displacement of the engine? In my experience, manufacturers will change the shape of pistons or the size of the combustion chamber in the heads to change the compression ratio.

But like I said, I don't know the SRT4.

 

Thats cool that they are daling with first hand and talking to you about it! I cant wait to see what they come out with!

 

A shorter rod actually increases chamber size which reduces C/R. They did this to compensate for the added boost to prevent detonation and yes, also used a different piston design. The variatons were relatively minor.