Just recently my crankshaft basically was destroyed by a bottomed out bolt that cant be removed... Nissan is quoting me about 4500 to buy/install a brand new crankshaft with bearings and all other components... or about 6800 to buy/install a brand new block...

there is no way i can get this money without getting a loan (so regardless ill be getting a loan)

What would be the best route to get this done, buying a used crankshaft? used block? trying to use heavy machinary or even a specialised welder to get the bolt out and see if we can salvage the crankshaft....

Any information would be helpful, thank you very much!

 

Definately get a used block.

What do you mean the crank was destroyed by a bottomed out bolt? You're gonna have to explain that one.

 

As another shop and I were putting the pulley set on, we couldnt find the torque charts so we went on the internet and looked them up, nissan says that the crank bolt was torqued down to much and bottomed out, the pulley started wobbling so i took it in to try to get an orig crank pulley back on, they literally had to saw the pulley off to get at the bolt, and the bolt wont budge.... so they are thinking the crankshaft is destroyed or at least not quite salvagable enough...

so with it being a performance pulley and them not intstalling it (cuz i had a mechanic in the family do it) then its not covered under warranty...

how much would a used block run me?

 

That sucks to hear man. Hope everything turns out well.

Anyways. You could find a used block somewhere on the forums for sale or open a yellow pages and start calling yards.

 

Go to SGP and build yourself a short block for about the same price i think it would be the best choice

 

well the car is not in running condition right now, has no pulley, no belts, no radiator, no fans anything right now it was all taken out by nissan...

besides SGP is way to far and would cost far to much for me to ship it there

 

Yikes, I'm very sorry to hear about that! The pulley bolt was over torqued until the shaft bearing distorted... Note to self, replace my PRC torque wrench with great commercial grade one!

+1 on finding a used yard core. You should hop it up with new cams, rods, pistons, injectors, and headers. This is an opportunity to save your Family Holidays. Good Luck on turning this around!

 

did the bolt back off after it broke are just stayed logged in.

 

did the bolt back off after it broke are just stayed logged in. did it happen right after you cranked up the motor or were you driving when it happened.

 

https://my350z.com/forum/showthread.php?t=177715

done!

 

the bolt isnt broken, the bolt just bottomed out and they cant torque it out at all, theyve tried tools to certain machinary... it wont come out....

S TWO K, dang that was a good deal to but i missed out on it, shoot i would have almost done that in a heartbeat

 

this may sound stupid, but whats the difference in a short block compared to a long block, from SGP?

its cheaper for me to just get a somewhat built block from them, and have nissan install it, then buying a block from nissan and having them install it...

and which is more mod friendly with a turbo/twin in the future?

 

Also I just got to thinking, can SGP install the motor at their shop?... cuz the drive to houston and back from my home town would be WAY cheaper then shipping the block itself, and i can literally save quite a bit of money...

 

Repeated other posts...

 

A short block is the lower and requires extensive labor to transfer your stock engine head (below). If my engine ever needed to be taken out I'd save up and do a performance rebuild. Select a reputable rebuild shop that provides at least the 12month warranty. Both SGP and Stillen SC offer a 3yr warranty. It's great to see aftermarket companies back their performance products. Good luck!

>online search reveals what the short block is missing:
Cylinder head. A complete new or remanufactured cylinder head assembly is installed with a new head gasket and torqued to specification. Complete cylinder heads include new or reconditioned valves, valve springs, valve guides (if applicable), valve seats (if applicable), valve locks, and valve keepers.

 

For the love of God...please call me ASAP. I can get you a brand new factory fresh short block for a fraction of what this dealer is asking. Shoot me a PM.

 

Sharif i sent you a pm

Thanks dream for explaining a little bit of that. Well its come to the point im gonna have to take a loan out to get all this done heh, nowhere could i save up that much money in the time i have to get something done or get it off nissans lot...

 

just curious man. what have they used so far to get the bolt out? nissan could be making it sound alot worse than it is in an effort to try and "teach you a lesson" for going elsewhere to get the work done. if the radiators were pulled you could hit a nasty impact on it.
i am just having a hard time believing you are the only one to have bottomed out the same bolt and crank and pulley so many others are using too. might be something to try first. i know one guy on the forums put a breaker bar on the bolt and turned the motor over to loosen it, lol. not recommended, but doesn't sound like you have much to lose.

 

Well im thinking id rather go with a somewhat built block anyway, this is kinda my excuse to... sounds like most likely im gonna take it to SGP in houston and work out a deal, ill tow it of course but i mean its a really good reason to just go ahead and put a built motor in it

 

willing to bet the bolt isnt bottomed out. i had the same thing happen and the broke the head of the bolt off trying to take the bolt out. luckily i had the stock pullies on (had just changed them out back to stock)
anyhow what i was told was the bolt wasnt tightened to torque and backed out enough to give play between the crank and the pulley. it would wiggle a little at a time until it sheered the keyway and damaged the main seal. they said the bolt from being a little loose and spinning at such high rpms gets distorted and then wont come out.
now i dont know if its true or not, but thats what i was told.

got a new engine out the deal from nissan