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Topic: set no1 piston at 25mm????? (Read 697 times) |
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tiggerlit
Full Member
scorpio ultima auto 2.3 estate r reg
 
Posts: 164
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set no1 piston at 25mm?????
« on: Aug 23rd, 2015, 1:58pm » |
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hi hubby is doing the head gasket and it says set no1 piston at 25mm off the top dead centre. and the crankshaft at the same, so the cams will not be in the same position as they were when they came off. also would the piston be set on the upstroke or the down stroke.
any ideas please thanks
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tiggerlit
Full Member
scorpio ultima auto 2.3 estate r reg
Posts: 164
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Re: set no1 piston at 25mm?????
« Reply #1 on: Aug 24th, 2015, 9:55pm » |
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anyone 
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Tompion
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1997 2.3 Ultima estate.
Posts: 2918
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Re: set no1 piston at 25mm?????
« Reply #2 on: Aug 24th, 2015, 10:47pm » |
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It’s difficult to answer unless you give a link to where you got the information.
The manual I searched for said (prior to fitting the head) “Set the piston of cylinder no. 1 to 25 mm before TDC”.
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tiggerlit
Full Member
scorpio ultima auto 2.3 estate r reg
Posts: 164
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Re: set no1 piston at 25mm?????
« Reply #3 on: Aug 26th, 2015, 10:47pm » |
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yep that's it
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Simmo
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I'm an OAP !
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Re: set no1 piston at 25mm?????
« Reply #4 on: Aug 27th, 2015, 2:11pm » |
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The details are in The relevant page here. 
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Matt
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Manual'd and a 4.0 in the making
Posts: 2816
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Re: set no1 piston at 25mm?????
« Reply #5 on: Aug 31st, 2015, 2:47pm » |
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The 25mm will be before you link the crank and cams via the chain, set the crank so all pistons are down in their bores, fit the head(s) and torque to spec. Set the cams to the correct position then bring the crank round to tdc for no1. Fit chain and rotate by hand with the plugs out to feel for any resistance
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