When following the retorque procedure for the TA AL heads, after the initial time through and all the bolts are at 100 or 110 ft lb, do you loosen just one then torque it to 30, loosen the next, torque to 30 etc? Or do you loosen them all and start all at 0 then go to 30, 55 etc?
Finishline told me to ro them 1 at a time......not to fully break it all the way loose........just loosen a tick the retorque to finial torque
It's best yes,..with any composition style gaskets,..MLS not so much but I do as its easier than not doing it
So re-tq before its been run, after or both. Have the Riv's 430 on a stand waiting for the trans to come back for install. used the basic felpro blue gaskets. torqued the heads then went back the next day and checked each bolt. found all still at 110lbs. was going to run the engine then after cool down pull the covers and re check tq.
I always re-torque steel shim after breakin....since every time I have they seem to take some. On those I don't back off first, just hit them again with final number.
I redid mine after sitting a few days, after first few warm ups, then again at the start of last race season
But my heads are aluminum not iron.........I never retorque my iron heads and never had an issue in 20+ years of using all kinds of gaskets from el cheapo to copper
Yes, one at a time, in the tightening pattern used to initially install them. Break it loose, and pull it back to full torque. JW
