Rb26 ring gear stopper

Discuss the RB20, RB25 and RB26 series engines.
ralphsdiorama
Posts: 811
Joined: Thu Apr 14, 2005 4:42 pm
Car: 1991 240sx, 1998 240sx (RB project)

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Hey Guys, I am in the process of taking the head off my rb26 and I am having some issues with getting the crank pulley off. The FSM says to use the ring gear stopper in order to hold the crank. I was wondering if their are any interchangeable parts here in the states for the adapter on the ring gear stopper. If so I think I can just build one myself. If not, I know I can just get ahold of an impact gun and loosen the bolt, BUT I am worried that when I am putting the Crank Pulley back on that I wont be able to apply the right torque with just an impact gun. What do you rb26 guys use to remove and torque your crank pulley?


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Shocker
Posts: 2082
Joined: Sun Aug 01, 2004 2:40 pm
Car: 89 240sxHB rb26/30

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If the engine is in the car, I put the e-brake on, 5th gear on the trans and make sure the rear tires are on the ground.

If on the stand, (this is a little rigged) but I install a flywheel screw into the back of the crank about 5-6 turns in. I then use a 36" 3/8" extension and pin it between then flywheel screw and two other points on my engine stand, I apply my body weight + some on my p**** bar and the crank bolt comes loose.

Do this at your own risk, if your screw on the crank isn't far enough in you can rip threads out and f*** it up. I keep the 3/8" extension between the head of the screw, and the back of the crank pretty tight. This leaves a very tiny moment arm on the screw preventing bending stress, however it increase shear. I know my crank bolt was previously torqued properly and not stuck on there, so it loosens very nicely.

There are better ways to do this I'm sure, I'm just tired and not in the mood to think of them. cheers.

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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impact gun to take it off, then impact it back on. do the final torquing when the motor is in the car connected to the driveline.

ralphsdiorama
Posts: 811
Joined: Thu Apr 14, 2005 4:42 pm
Car: 1991 240sx, 1998 240sx (RB project)

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Thanks for the info guys!

240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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I used to remove my crank pulley from my L28ET by pinning a breaker bar against the frame rail of my z and bumping the starter LMAO.

Evan

l0nestar
Posts: 2251
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Car: 1993 Nissan 250SX
2004 Toyota Altezza
1963 Chevy Impala SS
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I used a method similar to gawdzilla.

My engine was already on a stand, I used an impact to remove the bolt, then a set of Proto gear pullers. (not a steering-wheel remover) to begin pulling the balancer off - took a few turns to loosen it then about dropped it since it just popped off! lol

When re-installing, I carefully lined up the keyway and slid them together, then tightened the crank bolt by hand, using the engines compression as a fall-back, then did final assembly when the drivetrain was fully assembled used the e-brake with the transmission in 5th gear (OD).

imotion s14
Posts: 142
Joined: Sat Dec 29, 2007 11:49 am
Car: 1997 240SX

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bought a little tool on ebay for 6 bux.

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Shocker
Posts: 2082
Joined: Sun Aug 01, 2004 2:40 pm
Car: 89 240sxHB rb26/30

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blast you all with an air compressor and air tools. p**** bars are about as advanced as I get with "mechanical advantage"


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