Launching it down a drag strip, lunched the front diff halfway through 1st gear lol

Didnt get much change from NZ$5k lol

This is sorta what the diff looks like when in 1 piece



This is it in pieces


Its definately a helical front diff, note the worm gears


The rest of the insides of the transfer case


The transfer casing. Evo gearbox on right and primera box on left

 

danggg....how much whp on your car?

 

Looks like someone launched without preloading the drivetrain...please tell me your car is making some serious power

 

prolly around 320whp

its an evo 7 gsr with TBE (80mm kakimoto... LOUD), 21psi and tune. nothing too fancy

1st run i got 13.5 at 175kph woohoo

2nd run it let go

was using 5000rpm launch control and tephra NLTS (which rocks btw)

what do you mean when you say 'preloading the drivetrain'?

 

He means slowly slipping the clutch till the car starts moving so all the drivetrain parts are already positioned "next to each other" in the direction where you're going.

For example a very stupid mistake you can make is going past the stage lights and then going reverse just to the point where you get ready to launch it. All your drivetrain is leaning on the parts in the opposite direction of where you'll be going and when you launch there's still gaps there and that's one of the ways of breaking stuff really fast.

Hope this made some sense.

 

It sucks that it broke but i think its sweet when parts really break instead of something small where you have to replace it. That thing was destroyed.

 

Slip the clutch dude....

 

ouch, thanks for the pics tho. looks like its time to talk to shep

 

t4 primera ftw (hopefully with a tiny t25 snail in front)

 

Looks like someone didn't have proper torques set in their TC, and not preloading was just the ticket to make it all explode. 320WHP shouldn't have killed it had it been set up properly.

 

Could've been a lot worse...had a buddy wreck his car over something like this but his ring and pinion let go too.

 

Wow. I have not seen anyone do that to the stock front LSD.
Most of the time people break the stock front. 03-03 ego front open diff but now the LSD

 

my expensive mistake then haha though wouldnt the clutch restrictor pill slip the clutch a bit anyway?

coming from FWD's i used to just dump the clutch and modulate the throttle

another theory is that whoever changed the bolts on the helical lsd to cap screws overtightened them because there appears to be mini cracks around them.

oh well if you're gonna break something, do it right and totally f*** it haha

funny you should mention, a friend of mine has a p11 t4 with sr20vet (xtrail engine). quick car

 

more slip, vs the dump. Dump sends drivetrain shock, shock = breakage. Not the end of the world, ralliart lsd or quaiffe lsd and you'll be back in no time.

Note: removing the factory restrictor pill allows for easier clutch slipping.