tuckerwilliam

I just swapped out my cam back to stock and was re-installing my ASP pulley and am having one hellova' time getting it back on the crank properly!!! I have went through 2 new crank pulley bolts trying to get it to seta properly. The first time I installed it (when new) it was no problem to get it installed and lined up with my other pulleys. Now I am between 1/8" and 1/4" from being all the way back. It jerked a rib off my main belt and throws my A/C belt immediately! ANy tips &/or tricks on how to get this SOB seated properly? I put a breaker bar on it last night and turned it another thread or two but the pulley didn't seem to move at all. Could I heat the hell out of it without damaging my front cover seal? HELP!!! TIA for any advice!

monicaz28

iTrader: (5)

Aren't you supposed to get it warm or hot to help it stretch out more easily?

Mike K.

I always heat it up and then use some just a little grease on the inside of the pulley, you really gotta tq those things down, I can remember to tq specs but I wanna say past 200 ft lbs, then you gotta turn it like 180 degrees past that, check ls1howto.com I think he has a pulley install.


Do a search you can find all kinds of info about this and get the proper tq specs, what I am telling you is just from a foggy memory so don't use verbatim.

tuckerwilliam

I guess what I was mainly concerned about was damaging the crankshaft threads by trying to overtighten the bolt, which is a stock (new) tty bolt.

ArcticZ28

iTrader: (14)

You have to torque that thing to as close to 240 ft/lbs as you possibly can to get it all the way on there.

2000 Ultra Z

iTrader: (1)

gm spec is 250 ft lbs with the old bolt and 35 ft lbs with the new one

Cody Brooks

iTrader: (2)

you need the installation tool that 618 HAWK is selling in the tools of the trade forum to help push it on the rest of the way. It'll make installing the bolt a simple matter of starting it then tightening.

shouldaboughttheZ

iTrader: (8)

WTF?? 35 ftlbs?

ArcticZ28

iTrader: (14)

You gotta turn it 180 degrees past that once you get it to 35 ft/lb

tuckerwilliam

SUX2BU

iTrader: (14)

just use an impact. thats how i've gotten over 100 pullies on these cars.

ArcticZ28

iTrader: (14)

An impact def runs the risk of stripping the threads. Although that's quite contrary to your success thus far. Just something to watch out for.

Mike K.

yeah impact seems dangerous especially if not on straight but you could defeinatly hit 280 ft lbs lol.

SUX2BU

iTrader: (14)

You don't start it using an impact. ASP pulleys you can get a few threads on before it gets tight. Stock pulleys you can use a little bit longer bolt to start it then swap over to a stock bolt to finish it.