Head bolt torque

Tony Klintasp. · Post by **Tony Klintasp.** » Tue Aug 03, 2004 2:21 pm

Could anybody help me by telling me the correct torque figure for a AJS 500cc twin -60 model 20.

Charles · Post by **Charles** » Tue Aug 03, 2004 3:00 pm

Hi Tony,

My manual covers 1957-1964:

Twin Cylinder Head Bolts - 16 ft.lbs

Twin cyclinder head bolts (3/8" studs) 25 ft. lbs

I use the 16 ft lbs on my 1960 G9 as i don't have 3/8" studs

Regards
Charles

Tony Klintasp. · Post by **Tony Klintasp.** » Tue Aug 03, 2004 3:59 pm

Thank you Charles!!

//Tony

gsneyd · Post by **gsneyd** » Sun Aug 08, 2004 11:52 pm

Tony. I used a torque of 20lbs on my G12 which used 5/16in bolts. What is important is that you re torque (and also reset the tappets) after initial warm up, 10 miles, 100 miles and finally 500 miles. Set when engine is cold. I also slacken the nuts off 1/4 of a turn before re torquing.