Torque on aluminum rod bolts
I have a set of BBC Brooks rods and need to know if I should torque the bolt to 75 ft lbs (as per ARP w/Moly) or use my angle gauge.
I cannot use my bolt stretch gauge as there is insuffient room in the rod to insert the pin. 7/16 x 1.800 UHL, 8740 chrome moly @ 190,000 Brooks 65 series rods Thanks in advance, Dave |
I wouldn't think that much. Most are around 45 b/c it will pull the threads in the rod. Probably need to call the rod manuf and ask them.
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IIRC when I used BRC alloy rods with 7/16" bolts (not sure UHL) I used to torque them to 65 ft lbs using engine oil as lube.This was before the advent of stretch guages.
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I've got a set of Childs & Alberts aluminum rods in a BBC with 7/16 bolts. They are torqued to 65 ft lbs with oil.
TS1955 |
I finally found the number to Brooks tech line. The torque is indeed 75 ft lbs, but desoto30 and TS1955 were correct with the oil statement, (no moly is used for alunimum).
75 oil would be equal to 55-65 moly for a steel application. Thanks to all... Learned something today. Dave |
Originally Posted by oldandtired
I finally found the number to Brooks tech line. The torque is indeed 75 ft lbs, but desoto30 and TS1955 were correct with the oil statement, (no moly is used for alunimum).
75 oil would be equal to 55-65 moly for a steel application. Thanks to all... Learned something today. Dave Thanks. Zip. |
torque on ally rod
i have 65 series Brooks also and they advise motor oil only on the thread.The torque setting is dictated by the colur of the washer.
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Originally Posted by zipper06
Originally Posted by oldandtired
I finally found the number to Brooks tech line. The torque is indeed 75 ft lbs, but desoto30 and TS1955 were correct with the oil statement, (no moly is used for alunimum).
75 oil would be equal to 55-65 moly for a steel application. Thanks to all... Learned something today. Dave Thanks. Zip. Dave |
Re: torque on ally rod
Originally Posted by phoenix1
i have 65 series Brooks also and they advise motor oil only on the thread.The torque setting is dictated by the colur of the washer.
The first think they asked me was my washer color (silver). Thanks, Dave |
hi sorry about the delay in getting back but the washer is the key and silver is 75 ft/lb and the black is 90ft/lb.They are tensioned in three steps using motor oil only. The contact at brooks is Jerry Sweeeney and he is very helpful. Their number is 7147783315
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