iluvmydiesels
Veteran Member
im not really 100% aware of what you refer to as when the valves were changed.
i have a few AHU heads. all have the two spring set up, yet my year is listed for the later spring. single, outer, ALH type. perhaps retroed by mfg in years since.
all the valves i find now are AHU & ALH compatible if i understand correctly. 7mm stems.
i just wanted to be clear while im ordering the last of my parts, and before assy of a head.
i will probably go with the single ALH springs, and get new retainers as well, not locks or keepers, of course i have them, the spring top retainers. not 100% sure if the part# i have is for both the single spring set up and will accept an inner spring as well. part# i have ends with 641 C.
thanks,
oh and ty corpus for that thread size.
i have a few AHU heads. all have the two spring set up, yet my year is listed for the later spring. single, outer, ALH type. perhaps retroed by mfg in years since.
all the valves i find now are AHU & ALH compatible if i understand correctly. 7mm stems.
i just wanted to be clear while im ordering the last of my parts, and before assy of a head.
i will probably go with the single ALH springs, and get new retainers as well, not locks or keepers, of course i have them, the spring top retainers. not 100% sure if the part# i have is for both the single spring set up and will accept an inner spring as well. part# i have ends with 641 C.
thanks,
oh and ty corpus for that thread size.