It looks like this topic has been beaten a few times, but I really couldn't find any decent info on it while searching, then again I may have typed the wrong thing in..

GM's specs for the 2.4's tranny are ridiculously low, yet I don't hear about a lot of people here changing their transmission when they slap on a turbo. To be honest, putting on a full exahust, intake and a good tune would put you close to or above that limit.

So can the tranny handle that kind of a load? That rating seems a little low but it should be relatively close to what it can handle.

What about the rest of the engine? If you slap on a Hahn turbo kit and start pushing 280hp I can see something in the engine not being happy.

 

there is a dude who's run the m62 swap for 30k miles
no problems with the stock clutch and tranny
now he is only at 230whp
i've wondered the same thing

 

The clutch is the one and only reason the tranny is rated so low. The syncros aren't exactly top end either but they can handle the power if you drive correctly. You might still want into looking up better syncros if you want higher power or drive kinda sloppy (got that from my friend at teh dealership shop).

I'm looking to get a stage 2 supercharger for my 2.4....

 

I'm basically wondering what a realistic spec for it is since I'm trying to price things out. I'm debating between beefing up the engine N/A or just putting a turbo on it. I have no idea which has less complications yet, but I'll ask the shop that question.

 

arnt the Autos better for this?

 

More people have found it easier and cheaper to go turbo or supercharged verse an N/A build. N/A would be sweet I agree, but it is kinda expensive and not as advantageous as a turbo build.

The auto's are better, stock. From what I understand all you have to do to equal the tranny up is throw a clutch in it, the manual tranny of course.

 

I'm getting tired of hearing that. If you plan on going in a straight line then yeah its going to help if you simply don't want to learn how to shift properly. If you get someone with a short shifter and knows how to shift, its not going to matter.



Makes sense, I gotta find some way of confirming this though. I think if you did a fair deal of work to the internals you could get close to 280HP N/A as you can with the Hahn. As you said though, its much more expensive. You'll pay about the same as a Hahn kit does in parts, but installing them is going to run the hole in your pocket unless you do it yourself. Since this is my daily driver, I cant afford to take it off the road for months to work on it.

Really though, I just don't know what complications are with an N/A build or a turbo build. From what I've seen, N/A has the least problems if you take the time to find the right parts, get them installed right and get it all tuned together properly, forced induction can cause complications, but really bang for the buck, its the best way.

 

damn dude you went way of the path on your responce... chill out. Its a known fact that the Stock Auto Tranny can hold more power then the Manual tranny. No one ever said the Auto is faster then manual. all tho most people cant shift for ****

 

The manual is a great transmission, there are plenty of guys here that can back that up. Most of them have had to replace the stock clutch with a better one after they get some kind of major power adder. Because its has to much torque then, and the clutch ends up slipping from the extra force. That's the weakness in the manual tranny. once you do that and add a short throw shifter you should be just fine.

An N/A build that will yield the power a hahn kit, will cost way more then a hahn turbo kit will cost including installation. N/a sounds cool and better then FI, and more reliable but its just so expensive. JBP has some triple flow something or another cams, last I knew those would cost you both your arms and a leg. I don't know how you would be able to drive after that.

 

Your not even on topic since I don't have an auto.



Thats the thing, it would be cool and more reliable, not too many others use N/A and get the same power but thats the biggest problem. Youd be so full of debt after that unless you have a tonne of money.

Thanks for the info on the tranny then, its good to know the tranny can handle it, just not the clutch. Would you recomend some re-building in it or just leave as is?

 

look up the member named cobeezy

he has a nice na build

 

 

I wouldn't know anything about that. Its something I would like to look into and what not, if you find anything out let me know.

 

fyi hahn ran a 10.58 in there f23 equipped sunfire with nothing but an upgrade clutch and lsd.

 

No its rated low because thats the load it takes in the test. Load carrying ability is based on gear and shaft size/construction predominantly

Synchros have nothing to do with the power handling capability of the transmission, and good luck getting "better synchros"

 

So probably not such a good idea to try and push more power on it then?

 

Of course you can put more power into it. You just have to be more precise with your driving, and know that if you dramatically increase the amount of load the trans sees that youre going to shorten its lifespan. Thats just the way it works. You gotta pay to play.

 

Its just hard for me to justify spending all thise money on the car. Perhaps when the payments are up and I'm looking at a new car I can take that money and use some of it to mod the car, but going past a turbo or internals and having to replace drivetrain parts is a little deep in the pocket for me.

I'm having troubles with that stupid tranny as it is, so maybe I could use this as an excuse to replace it.