It was E_K who did the write up, and an outstanding job.
- here is thread Pasta was reffering to https://g35driver.com/forums/engine-drivetrain-forced-induction/50576-crank-pulley-installers.html

No timing is at risk, the belts you are messing with only turn the ALT, Power Steering, and AC. The timing is done by a pair of chains under the 'timing chain cover, as is the watewr pump.

You absolutely want thye breaker bar ON THE GROUND when you bang the starter, YOU DO NOT WANT IT IN THE AIR - THEN SMACKING THE GROUND!!!!

Here is the link to E_K's write up on doing the install https://g35driver.com/forums/showthread.php?t=26215

E_K did an outstanding job on this, read it...

 

well, that's not true. the timing chain is connected to the crank by a timing chain sprocket. if you turn the crank pulley, you turn the crank. it's in the service manual.

 

nick: of course turning the crank pulley turns the crank - your question was "does it/can it effect the timing - the answer is no. - the point being you are disconnecting anything that could allow changing the relationship of the cams to the crank. Even in a Honda (as you mentioned you are familiar with) the timing belt is under a cover, and pulling the outer pulleys and belts (such as the PS, alt, AC) does not effect the engine timing.

You could remove the crank pulley, turn the crank while doing it, and after removing the pulley and belts you could spin all the accesory pulleys.... and guess what - you have in no way effected the engine timing.

The only way you can hose the timing is to pull the timing chain covers, and release the chains and get the cams out of sync with the crank.

The engine doesn't even have a distributor to hose up.

 

need some clarification.....i was told to buy 2 new different sized Gates belts for the ur crank install.....went to oreilly and autozone and both stores have the gates k060445 in stock, BUT neither store has gates k040353..... it doesnt exist in their databases.........do i have the correct part number for the second belt?

i found a belt set (both belts) on nissan performance website, but no specifics on the belt sizes, so i dont know if they are the correct part number

 

You have the right part numbers.
KO60445 21MM X 1150MM O.C.
KO40353 14MM X 910MM O.C.

 

The 2 Gatorback sizes I have are: 4040350 (350mm's), and 4040445 (445mm's).
C.

 

i agree with you that just by turning the crank, you won't affect engine timing. that's if you turn it clockwise. once you turn it counter clockwise, it could affect the tension on the chain (or belt in hondas) and you could then screw up timing.

 

thanks guys

i ended up ordering the belts from performance nissan......they verified the part numbers that gee pasta confirmed

i am getting really excited about this mod.....can't wait for next weekend as i have decided to install it myself

 

You will be very happy with this Mod" Its a good bang for the buck.
Enjoy. D

 

Na, the timing chain has a tensioner and it doesn't care which way you choose to crank the engine. You won't loose slack plus the cams have thier own chains and tensioners. It's basically impossible for these chains to jump a tooth.

 

like i said, i'm still used to honda engines. with them, if you turn counterclockwise, you'll throw the timing off. i just wasn't so sure with these engines as i'm not used to the whole timing chain thing either. but thanks for clearin' it up dave now i don't feel so dumb!

 

Did you guys replace the crank bolt? I have read where neffster stated that the bolt should be replaced since it is stretched during installation (the 60 degree tightening)

thanks shooter

 

shooter... it won't be the first time Neff was wrong

I don't know of anyone who replaced the crank bolt, nor is it needed.

 

........thanks sickone

well, so far i have borrowed a 19mm impact socket; 12 inch breaker bar (figure i can use a cheater to lengthen to 18 or 24 inches); and an air impact wrench.........i was wondering if any of you guys have used the impact wrench? do you need to move the radiator? or any other parts to use? I figure the impact wrench would make the job easier to loosen and tighten...........

 

I am putting the UR pulleys on a 2005 Coupe AT this weekend. I will take pictures and post it in the DIY. The method E_K explained is totally normal for AT cars. My buddies have done it several times. If you on what is going on, it is actually a pretty slick idea. I am surprised the MT guys don't do it to get the crank pulley offf.