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135 timing btdc

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135 timing btdc

Postby angeleye » Sun Oct 11, 2009 10:40 am

finding it difficult to get at flywheel sensor to try and get a pin in to time engine, does anyone no what the distance the piston is supposed to be from top of head i can set timing with dial test indicator, if i new setting,.....(grollie )i read your post i no you set your similar way, have not got tis disc ,is the timing 10mm btdc, and set cams, thanks
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Re: 135 timing btdc

Postby Frag » Sun Oct 11, 2009 8:35 pm

Not much help but i`m sure tdc (50 degrees before) is around 22 or 24 mm on No1 piston from block surface to piston top edge :?
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Re: 135 timing btdc

Postby winterheating » Mon Oct 12, 2009 2:54 am

hope this helps aswell

rotate the crankshaft until piston no1 is approximetely 10mm BTDC

zero the dial indicator gauge

mark the position on flywheel primary mass

crankshaft clockwise

rotate crankshaft until piston no1 achieves zero on the dial indicator gauge.

mark position on flywheel.

repeat to make sure mark is correct

the middle of the markings is TDC measure the distance between the 2 marks

divide the amount by 2 AND MARK position TDC on flywheel

measure the circumference of the flywheel

multiply the circumfrance by 0.1388

mark the calculated amount on flywheel by measuring from TDC anticlockwise

1 first mark

2second mark

3determind TDC

4determined 50 degrees BTDC
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