when i was giving the +R i have for sale a face lift. i decided to spin a few extra valves since i had all the jigs and tool post grinder out. valve's are +1mm over stock V2 valve and have 2 up for grabs. valves will work in the +R head if guide is reamed and V2 retainer keepers and springs are used. price is $78.00 per valve shipped within the US.
blackdiamond left +r on right. before any one ask yes black diamond is taller. next picture will show why
+r on right and as you see has virtually no margin
blackdiamond head od
+r valve weight
blackdiamond weight, a lil weighty over the +r valve but it is +1mm oversized and has 5mm stem vs the 4.5mm stem of takie. i do not have a V2 valve on hand to reweight and take picture and cannot find picture of a previous V2 intake i weighed. on same scale V2 weighed in at 27~27-1/2 grams.