underdrive pully help

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
jkilby18
Posts: 360
Joined: Sun May 11, 2008 6:21 am
Car: 1991 300zxtt

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so why my motor is out im gona change the cam seals and front main... but i can not for the life of me ge the underdrive pulley bolt loose.. ive used penetrating spray and a air gun and it still wont budge.. any ideas ?


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Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

Post

How strong an impact gun are you using? I can put more than 500lb/ft of torque on a breaker bar with a cheater bar. I'd try that and getting something to lock out either the cam gears or the flywheel.

jkilby18
Posts: 360
Joined: Sun May 11, 2008 6:21 am
Car: 1991 300zxtt

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i ended up using a breaker bar and my old alternator belt and wraped it around the alternator housing.. i seen it some were on this forum and it worked amazingly

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NolimitZ32
Posts: 7042
Joined: Fri Jun 27, 2008 9:07 am
Car: 91 AG2 2+0 TTMT swap/E39 BMW 540i6/E53 4.6is Dinan S3
Location: Houston, TX

Post

usually you want to lock up your FW against the block, its safer than using belt that could slip.


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