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Although I own both counterhold tools for the B230 and B21/23, I no longer use either one. Instead, I prefer a piece of cotton clothesline (nylon or similar is OK too), for what is called "The Rope Trick". It's quicker and easier than the "tool", and the basic steps are simple:
1 - Pull plugs and rotate crank to #1 0° TDC Compression
2 - Verify #1 and #2 valves closed - look thru oil fill hole, #1 cam pointed slightly up and inboard, #2 pointed horizontally outboard.
3 - Rotate crank about 90° past TDC.
4 - Stuff about 3 feet of clothesline into # 1 plug hole, leaving 6" outside (feeding the rope in thru a short length of heater hose makes the job even quicker).
5 - Rotate the crank backwards until the packed rope stops further rotation.
6 - Use socket, breaker bar, and pipe extension to loosen pulley bolt.
7 - Tighten bolt the same way, but start with crank about 90° before #1 TDC Comp.
8 - When tight to spec, back the crank up a little a little and remove clothesline.
To my knowledge, this is the only "trick" holding tool alternative that allows tightening the bolt to book spec of 122 ft lbs. for B21/23, or 44 lb ft, then an additional 60° (B230).
Here's what some first-time users had to say:
• "The "rope trick" for holding the engine still while removing the harmonic balancer bolt worked like a charm. Honestly, I doubted that it would, but WOW!"
• "I finally had an opportunity today to use one of the "rope" tricks to help take off the crank bolt. All I can say is - it worked like a charm! Two seconds and I had the crank bolt off..."
* "I did this a few weeks ago exactly as ... described and it couldn't have been easier." 5/29/05
• "....the rope trick worked like a charm to loosen and tighten the crank pulley bolt!!," 12/28/05
• "tryed the . . . method without any luck but the rope trick worked fine to remove the pully bolt" 1-10-06
• "(thanks for the rope trick! Worked like a charm.)" 6-26-06
• "i just completed the task using the rope trick and my opinion is that it is extremely gentle as compared to jamming a screw driver anywhere. it required about 5 to 6 ft. of 1/4 inch rope and made mission impossible mission simple."
• 4-25-07 at http://www.brickboard.com/RWD/index.htm?id=1178645.
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Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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