HELP WITH UNDER DRIVE PULLEY ????????

Information on the naturally-aspirated KA24E and KA24DE engines.
preston240sx
Posts: 562
Joined: Mon Oct 04, 2004 9:53 pm
Car: Nissan 240SX S13

Post

So can someone tell me how to get the under drive pulley off ? I can't get it to not turn to break the bolt any idea's ??

thx Preston


User avatar
Fenvy
Posts: 5052
Joined: Thu Jan 29, 2004 9:30 am
Car: 2005 350Z Base 6MT

Post

you need a pulley turner... measure the size and go to your local auto zone and they'll know what you need

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

Post

Get a ratchet hooked up to a long breaker bar....

Put breaker bar against the ground and turn the motor on for a split second(don't let it start!)

...that's the easiest way.

Titan
Posts: 158
Joined: Wed Feb 19, 2003 3:49 pm
Contact:

Post

crzycav86 wrote:Get a ratchet hooked up to a long breaker bar....

Put breaker bar against the ground and turn the motor on for a split second(don't let it start!)

...that's the easiest way.
Or instead of risking damage/injury...

Put it in 5th gear, this is the tallest gear and will offer the most resistance. From there on in, use a breaker bar or slide a pipe over your rachet.

User avatar
Fenvy
Posts: 5052
Joined: Thu Jan 29, 2004 9:30 am
Car: 2005 350Z Base 6MT

Post

oh wow! I didn't know you can do that

240marcuSX
Posts: 4005
Joined: Sat Feb 22, 2003 11:00 am
Car: E34 525i
E46 M3

Post

or you could just use and impact. the hardest part is getting the old pulley off of the crank....

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

Post

Titan wrote:Or instead of risking damage/injury...

Put it in 5th gear, this is the tallest gear and will offer the most resistance. From there on in, use a breaker bar or slide a pipe over your rachet.
Have you tried that? When I was doing my timing chain, I tried something like that, and it just slipped the clutch. I put it in first gear though. It really shouldn't matter because the wheels don't turn.

Titan
Posts: 158
Joined: Wed Feb 19, 2003 3:49 pm
Contact:

Post

crzycav86 wrote:
Have you tried that? When I was doing my timing chain, I tried something like that, and it just slipped the clutch. I put it in first gear though. It really shouldn't matter because the wheels don't turn.
Yes I have tried that and it worked perfectly.

It does matter what gear you have it in. I know exactly what you are talking about. I tried it in first gear and there was a large amount of springback. Then I placed it in fifth gear and there was far less slack, which enabled me to loosen it.

It makes a difference because the majority of the springback is generated through your transmission due to all the gear lash. Well before that torque gets transmitted to your wheels.

Titan
Posts: 158
Joined: Wed Feb 19, 2003 3:49 pm
Contact:

Post

240marcuSX wrote:or you could just use and impact. the hardest part is getting the old pulley off of the crank....
Sure, if you could fit an impact gun inbetween the pully and the rad. I know I didnt have room for that.

I was able to wiggle my pully off with my bare hands, so it is not always the case.

crzycav86
Posts: 3836
Joined: Tue Aug 05, 2003 1:28 pm
Car: 93 Nissan 240SX KAT

Post

Titan wrote:Yes I have tried that and it worked perfectly.

It does matter what gear you have it in. I know exactly what you are talking about. I tried it in first gear and there was a large amount of springback. Then I placed it in fifth gear and there was far less slack, which enabled me to loosen it.

It makes a difference because the majority of the springback is generated through your transmission due to all the gear lash. Well before that torque gets transmitted to your wheels.
Cool. Good to know.

240marcuSX
Posts: 4005
Joined: Sat Feb 22, 2003 11:00 am
Car: E34 525i
E46 M3

Post

to get an impact in there with a regular sized socket, all you have to do, is undo one side of the bottom of the fan shroud, and then it fits snug in there, break it loose, and take out the impact or it will get stuck against the radiator.

you just have to have your fan off, and that part of the shroud out of the way.


Return to “KA24E / KA24DE Forum”