already did a search on this many times for my rear disc conversion project but cant seem to find the answer.

Simple question: I recently just recieved a prop valve that I bought that was claimed to be off a 99-00 civic SI and it look right for being a EK civic prop valve. And in other threads i hear people saying that is is stamped 30/30 or 40/40 ETC. and that you need the 40/40 when doing the rear disc conversion. What do i need to look for that is stamped in on the 99-00 prop valve i bought the only thing that is really stamped in is on the front "A26C E" Can anyone look at there civic si or if anyone knows that this one is a 40/40 si prop valve, that would be very helpful.

Thanks

 

TTT

 

Mine says H4CE on the side that faces the front of the car, not sure if there are numbers on the back and I'm not about to try and take it off. Also on the side it says 77. I think I read in a couple posts there is no real way to tell by the stampings on the outside of it becuase they are different. If this helps my stock one was mounted straight and when I put the 99-00 Si valve on it is kinda angles to the side, like a 45 degree difference. If that makes sense to you. I guess if you replace your old one and this one mounts up kinda tilted you'll know that it may have the right one. I got my valve from importautosalvage by the way so I never saw the car it came off of but they gave me the vin of a 99 si that it was taken from according to them. Hope that helps.

 

si and hatchbacks have the same prop valve