How much HP can a 2G handle?

[4t9ers]

Before you flame me, here me out.

How much hp can the 2g CAR handle?

Specifically a GSX.

At what point does the tranny give out?

Clutch, axles, transfer case?

Basically, how much HP were you at when you had your first compnet failer?

 

[1sick_gst]

In all honesty, it depends on the healthiness of the car and how well it was/has been taken care of. Im not really one to judge a cars power but..as far as the drive train, I would estimate it at 400 wheel torque before issues start popping up with proper supporting mods. Also from my previous experiences.

As for the engine itself, there are nummerous amounts of stock block 7 bolts making upwards of 500hp tuned properly. When asking this question your main focus needs to be what will you be using the car for. Circut, drag, dd mainly, etc. Also factor in how often you will lay the hammer down as thor would say haha.

 

[Fullthrottle7]

As nicely as you may decide to ask, if you have to start a thread with "PLEASE DON'T TAR AND FEATHER ME!!" it may be better to just search and sift through the info . That said, in my opinion the magic number is 450hp so my goal with my 2g has been to stay just under that mark. Coincindentally that is close to the same "How much power can my stock engine hold" question. Can an axle break under that? Of course but usually won't. Will the synchros be happy on that 130k mile tranny thats been daily driven its whole life and take that kick in the nuts all of a sudden and like it? Probly. Will the pistons stay in their bores without divorcing the rods and having an ugly custody battle? Most likely...

Maintenance and proper assembly is everything just like every other post that asks these questions boils down to. There are guys running 600hp+ just to prove that they can on stock equipment. How long that lasts is different for every one of them. If you are simply looking for a target to shoot for in a daily driven car that you probably shouldn't go over without a parts trust fund and secret stash of driveline equipment, stick with a 50 trim or less and street tires and don't sidestep the clutch! Good luck hope you have a flame retardant track suit on cause this sort of thing gets ugly quick usually at least thats something of an answer for you...

 

[1G Eclipse94928]

0miles throw 500awhp at it and it will last, 100,000 miles throw 500awhp on it and the weak pieces start to show.

 

[4t9ers]

Thanks for the replies guys.

I have a 120k X with a 6bolt swap, but a stock turbo ATM.

I know that the motor can handle some boost, but I'm a lil concerned about the rest of the drivetrain.

350 - 400 torque is the goal. Just wanted some second opinions.

 

[1G Eclipse94928]

Thanks for the replies guys.

I have a 120k X with a 6bolt swap, but a stock turbo ATM.

I know that the motor can handle some boost, but I'm a lil concerned about the rest of the drivetrain.

350 - 400 torque is the goal. Just wanted some second opinions.

oh, what turbo for that torque?

 

[boost97gst]

Stock 2g 7 bolt has been up around 700whp. Cant remember whos car, but hes well known. Many many passes on it before it went out. Headstuds would be the weakest link right off the bat. If the tune is very good a stock motor can handle a whole lot more than most people think.

Clutch? Dont even think about stock.
Axles? Probably take a hell of a beating but all depends on condition and how the power is being put to them. Hard launches tend to break a ton of shit in the entire drivetrain.

What 99.999% of it comes down to is the tune. If the engine has good comp and no prior issues and the headstuds are replaced, its all in the tune. Theres no magic number.

I believe Landspeeddsm is currently running a very stock-ish bottom end. Hes dynoed at just under 600 i think

 

[gofer]

My stock 5 speed went out at 400ft/lbs, granted I had made a few passes with it and it actually broke accelerating down an interstate on ramp (not launching) but that's where it went.

 

[dexterholland04]

My stock transmission held up to numerous 10 sec passes and was alright. I did go through one rear axle, but it was because the car dead-hooked off the tree. If you're launching the car a lot, expect to break axles and transfer cases. Basically, if you expect to make 500+ whp, then expect to start spending some good money bracing/stiffening/breaking/replacing things.

Things that are now consumables:
-Transmissions
-Rear Axles
-Rear Diffs/Covers
-Transfer Cases

Also, if you're going to try to make a lot of power, then buy yourself a NICE clutch. Personally, I will never use anything other than a twin-disc clutch. To me, they feel and drive much better than the heavy-sprung singles. My Quartermaster 8-leg feels and drives like a stock clutch, you just have to get used to the engagement a little and its awesome.

 

[Boost Solution]

I think the weakest point of the drive train is the central differential inside the gearbox the Syncros hubs and sliders are damage by Improper clutch adjustment or dragging clutch assembly personal mind I do not ride anything other than a twin disk over 450 hp or 7000rpm , the second weakest point if the transfer case if you launch hard or makes wheel hop the tranfer dies. in my drag car i put a clutch masters flow control valve and helped me a lot to keep everything together.
Clutchmasters.com - High Performance Clutch and Flywheel Systems

 

[T is for TURBO]

My stock 5 speed went out at 400ft/lbs, granted I had made a few passes with it and it actually broke accelerating down an interstate on ramp (not launching) but that's where it went.

What died? The center diff?

 

[boost97gst]

I think the weakest point of the drive train is the central differential inside the gearbox the Syncros hubs and sliders are damage by Improper clutch adjustment or dragging clutch assembly personal mind I do not ride anything other than a twin disk over 450 hp or 7000rpm , the second weakest point if the transfer case if you launch hard or makes wheel hop the tranfer dies. in my drag car i put a clutch masters flow control valve and helped me a lot to keep everything together.
Clutchmasters.com - High Performance Clutch and Flywheel Systems

This. Both the twin disk and the slower engagement on launches will save a lot of parts from shock.

But, fwiw im on a stock tranny with god knows how many miles and have put 52lb/min to the ground(not sure whp? or tq). The big difference is im fwd and never launched. Just roll ons and even then i was spinning so bad half way through 3rd. But after 4500 miles no broken gears or axles. Again, im fwd, way less shit to break and with my tires, far less traction. Im sure if i hooked on a set of slicks things would break very fast. Not the shafts but tranny i believe would be the weak link. Diff maybe? Who knows, im going auto and those are really hard to break.

 

[gofer]

What died? The center diff?

Shift fork.