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underdrive pully qestion

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Old Oct 6, 2012 | 03:45 PM
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stherngent's Avatar
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Default underdrive pully qestion

How do you keep the pully from turning while your trying to loosen the bolt?
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Old Oct 6, 2012 | 03:49 PM
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put the trans in 4th if its a manual or use a flywheel lock if its an automatic
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Old Oct 6, 2012 | 03:50 PM
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ok whats a fly wheel lock?
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Old Oct 6, 2012 | 04:01 PM
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this guy makes them and sells them in the classified ads here

https://ls1tech.com/forums/parts-cla...e-holders.html

alot of people generally stick a screw driver in between the teeth of the flywheel
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Old Oct 15, 2012 | 08:55 PM
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Ok so I got my underdrive pully on, works great. It is a BBK, now my altenator is not keeping the bat. charged up enough to start the car, help? I have read that unless you have a system in the car you want need the pully for the altenator. Can I get a bigger altenator like a 150 amp, will that help? What do I need to do? Thanks
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Old Oct 15, 2012 | 09:06 PM
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You have a M6 or auto? Try a 10% OVERDRIVE alternator pulley to compensate the difference
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Old Oct 15, 2012 | 09:29 PM
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I have an auto,
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Old Oct 16, 2012 | 12:23 AM
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may make a tool to hold flywheel
hope the drawing of tool is understandable
use a 1/8 x 2 flat bar about 12 in long insert into flywheel threw the round hole in botton of bellhouseing ,
the notch in side will hold tool in place
PS: THE DRAWING DOES NOT SHOW UP CORRECT ,it should be about 2 in wide all the way down
WITH a small nick in the side to rest in the round hold to hold the tool in place

/\/\/\/\
|...... |
|...... |
|..... <<
| ......|
|...... |
|...... |
good luck. Johnny
ps: running a under drive. crank only last 11-12 years and no problems with
altenator is not keeping the bat. charged up enough to start the car,

Last edited by SS SLP2; Oct 16, 2012 at 12:30 AM.
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