marinatlas said:Hi, looks strange for me , i had always thought the atlas pushrods were 2mm longer than Commando ones......will check tomorow, Pierre.
comnoz said:Yes I think the early Commando used the Atlas parts but then they found excessive valve tip and guide wear because of the higher lift Commando cam so they lengthened the valves.
batrider said:Also fuzzy memory on the heat insulating washers on the intake side -- a recent thread brought this up -- there or not there? I think I only have them on the exhaust side.
comnoz said:I don't recall exactly when the valve length changed but I was thinking it changed early in 68 and the recommendation was to replace the short valves with the longer ones with the corresponding pushrods. It may have been during the N or P15 run that the change was made instead of Commando.