...Excite!
Attachment 118246
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...Excite!
Attachment 118246
The instructions on this kit is to torque to 100pounds...Cheers
What are pounds? ;)Quote:
Originally Posted by ozscott
Haha... yes well it's US after all. Instructions say to torque in manufacturer's sequence and then immediately provides a sequence diagram...presumably for where there is no known manufacturer' sequence... but it doesn't say that.
I am confident 100 ft lbs is correct provided the ARP moly lube is used on fine thread washer and nut. I think Pedro had 100 ft lbs used on his. Cheers
This is odd....found a reference to the kit being for use with composite gaskets but there is nothing in the instructions to say that...
http://www.crossaxledcustoms.com/pro...e-gaskets.html
Cheers
Lube and 100,;)
damn the torpedoes.
Can anyone tell us why different gasket compounds would change a head tension figure? :confused:
Maybe because different compounds probably have different tensiles. Some might crush down more than others. A tin gasket can't squash down more that the metal allows, multi shims probably have a different torque down as there is an airspace between each layer. Composite s are made of a material that might bed down/compress on torque.Quote:
Originally Posted by Pedro_The_Swift
The recommended tension for this kit in the instructions is 100 pounds so that would be the highest I could imagine ARP prescribing for any gasket. It's a lot of force over the 10 studs. Whether MLS or composite I will determine tomorrow when I straight edge and feeler gauge the block. Cheers
Quote:
Originally Posted by garrycol
Double check that it is 100 pounds or 70 poundsQuote:
Originally Posted by ozscott
Here is the link to ARP Website with the kit you bought
The Official ARP Web Site | Kits
If you click on the instructions link you get the instructions which are dated REV 1 DEC 2016 (see bottom of page)
[ame]http://arpinstructions.com/instructions/157-4301.pdf[/ame]
This doc says:
TORQUE PROCEDURE
9.
Following the manufacturers recommended torque sequence, shown below, torque the nuts per steps 1-4
1- Tighten nuts 1 through 10 to 25 ft-lbs
2- Tighten nuts 1 through 10 to 50 ft-lbs
3- Tighten nuts 1 through 10 to 70 ft-lbs
So it goes up to 70 pounds with step 3 but the pdf instructions says there are 4 steps so is the last step to 100 pounds? - :confused:
The paper instructions with the stud kit says 100 pounds but have they changed it since the kit has been sitting on the sellers shelf - confusing.
When I did mine I went to the 100 pounds and one stud pulled out of the head at about 90 pounds and I had to get the hole repaired - use a long nut-sert not a helicoil and there are not enough threads on a helicoil to hold - the cast aluminium in the head fails. Look how long the threads are on the stud versus the number of threads on a helicoil.
My engine builder said 70 pounds was OK for a RV8 and I went to about 75 (or was it 80) and that was the advice on a number of forums.
So you need to make up your own mind - I emailed ARP and whether 100 was too high and they did not respond.
Garry
