femster87
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| posted on 8/11/10 at 08:13 AM |
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Zetec Conrod bolt torque
changed my con-rod bolts yesterday to ARP ones. Just wanted to confirm torque. leaflet said 35 lbs/ft. Is this what everyone used?
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will121
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| posted on 8/11/10 at 08:29 AM |
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i fitted them to my silver top and followed the instructions, which from memory had a 3 stage tightening sequence to torque to finally 35lb/ft, at
first i thought it to be low but think the key thing is the use of the ARP grease.
its been ok on up to 7.2k
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femster87
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| posted on 8/11/10 at 08:30 AM |
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yeap, i did it 3 times, thought it was abit low as well. thats ok. thanks for the reply
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ChrisL
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| posted on 13/5/19 at 05:14 AM |
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I've just read the Burton site and it states "If you do not have a stretch gauge, torque the bolts to 25ft-lbs using ARP Ultra-Torque
Fastener Assembly Lubricant" so is it 25 or 35 lbs? and is it tighten once or 3 times to the same torque?
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theduck
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| posted on 13/5/19 at 10:46 AM |
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Its actually higher torque than the stock conrod bolts are done up to...
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AntonUK
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| posted on 13/5/19 at 09:18 PM |
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I did mine to 25 with arp grease on thread and under head. seemed really low but we will see when I start it at the weekend
Build Photos Here
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ChrisL
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| posted on 14/5/19 at 07:03 AM |
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Can I ask where did you get 25 lbs from, just trying to work out why there seems to be tow schools of thought?
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theduck
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| posted on 14/5/19 at 08:01 AM |
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The confusion is because there are two different ARP bolt kits depending on exatcly which "zetec" you have.
The only place people should be getting torque specs from is https://arp-bolts.com/ and you should check by searcing on there for the exact model ARP
bolt you have using the 7 digit model number
eg 151-6005 which is the zetec m9 conrod bolts and their spec is 36lbft https://cdn.arp-bolts.com/instructions/151-6005.pdf
or 151-6003 which is one of the other zetec conrod bolt kits and their specs is 25lbft https://cdn.arp-bolts.com/instructions/151-6003.pdf
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ChrisL
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| posted on 14/5/19 at 08:07 AM |
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Looks like the 6003 are for the 1.6L Zetec and the 6005 are for the 2L
But then this post seems to suggest that you can use 6003 in a 2ltr blacktop!
Reading more I've found this page http://www.westfieldsportscar.co.uk/sump.html
which states:
"For anyone looking to fit ARP bolts i can save you the hassels i had, there are 2 different size ARP con rod bolts, 8mm marked up for the 1.6
ltr zetec, and 9mm marked for the 2ltr zetec. As i found out after the place i ordered them from sent me the 9mm ones these are for the American spec
2 ltrs, all the UK zetec 2ltr engines use the 8mm bolts part number 151-6003"
Sounds like reasonable explanation - thoughts?
[Edited on 14/5/19 by ChrisL]
[Edited on 14/5/19 by ChrisL]
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