Originally Posted by Bob D
Hi, Saw your reply to the fellow seeking a manual for his Revtech. I would like to jump in here as you have torn one down and I have been looking for some advice on re-installing the heads on my 110. I'm in the process of having compression release valves installed but cannot find any listings for torque specs or tightening sequence for the head bolts, rocker arm bolts etc. I have a Gen III engine and when I pulled the heads there were no head gaskets either..!! To say I was somewhat surprised is an understatement...!! Is there some particular surface preparation required before putting the heads back on..? Any help would be much appreciated. Cheers, Bob
here is a few pics
my R/T had heads set up for dual plugs so I just but releases in the extra hole for the spark plug.
the tightening sequence is the same for a stock evo motor.
the tq, specs are 40 ft pds. dont do any of that 20-25 ftp then mark and turn 90 deg or 1/2 -3/4 turn stuff. go in the sequence for stock evo and go in 5 ft pd increments until 40 then your done. be careful because when I got to 35 and went to 40 I striped out 2 studs in the case. I had to helicoil them then. the studs are just threaded into alum in the case.
just make sure the surface is clean when installing the o-ring head gasket.
rocker arm support plate bolts 20-22 ft lbs
rocker cover bolts 15-18 ft lbs
rocker housing bolts 120-170 in-lbs
you can use sportster evo style rocker cover gasket instead of R/T brand. If I can help any further let me know