any one ever have the Woodruff key bend like this..

 

Holy ****. Usually they wil snap before that. Too much powa

 

ya..
if u notice the balance shaft chain is behind the gear also...so in gona take it out a go with a electric water pump...
the rest of my parts will be here tomorrow...also my new sc should come in..so hoping to have it on in the next week or so depending on how long it takes to came the adapter plate

 

wow!

 

crazy!

 

Did ZZP not run into these problems (high revs) and solved it with the ATI damper?

 

zzp moded the crank for eaither a longer key or added a second key to take stress off of the existing key

 

holy crap you got lucky son!

 

thats y Im putting an electric water pump on

 

check this out

 

Holy *****

 

this wat happends wen u put 20k very very very hard miles on a built engine..lol
the front bearing on the nd shaft gave up not to sure y..

 

Must be the tune......

Sorry i had too haha

 

Not everyone is dumb enough to let an asshat tune them like you.


Okay no more tuner comments. I apologize

 

Hey TJ u didnt happen to have a lightweight crank pulley on your motor by any chance? thanks

 

nope i had the stock crank pulley
and zzp NB shafts.

 

lol same person u begged like a lil girl to tune you, keep talking that hole is getting deeper.

 

plz don't start **** in this thread...i don't want it locked..
there is no finger pointing goin on here..

and for the record the tune had nothing to do with this..

the bolt that holds the balance shaft socket on snapped Im not sure y it did. all i know is that my engine has been to hell and back a few times.
i raced it just about every weekend...
and never turned down a good race. with a 7750 redline Im sure the bearing gave up. the balance shafts spin twice as fast as the crank dose..

 

oil

 

ur probably right lol...
ya
cuz the shaft spins freely but it dosnt seem to have any support in front now..

 

wow. did you use a new tty crank bolt when you changed to the NB shafts? I have seen pictures on a Saab of the teeth on the waterpump drive and balance shafts completely worn out, but the pictures also showed some pretty dirty oil and it was an old old car lotsa miles. you are blazing new ground here I think ....

 

yes i always replace the crank bolts cam bolts and i did change the NB shaft bolts wen i put them in..
Mrb and i think it could be the tolerance in the zzp NB shafts...cuz they r made out of different material than the stock and they both have different expansion and contraction rates.

 

Mr B is a good man and good advice.

 

yes he is lol..
wen i tear the engine down after i get my 2.4 in ill know more about wat happened.

 

take a stock balance shaft put it in a vice use a infer red temp gun to moniter temps and heat it up to 200deg and then mic it record the findings then do the same thing to the zzp nbs and see if it has a measurement difference at tempeture if the measurement is within a couple of tenths of a thousands i would lean towards oil starvation on that side

i think the gm nbs shafts start out as unmachined stock balance shafts

i hope the ele water pump works if it does that would be mega badass