What aftermarket valve spring options are there out there for a p8r valve train.
Im putting in crower 403 cams but i've read that the valve springs reccomended for these cams can cause valve float when installed in a p8r head, due to the 33mm vs 31mm intake valves.

Also vtec valve stems are thinner than the p8r 33mm valves (booo) so Im lost when looking for valve springs...

Anyone with reliable experience based knowledge out there? I need the right springs I wanna do this build 1 time.

 

I am running crowers 68181's(403's recommended valve springs) and their Ti. retainers. They haved worked for me all the way to 7800-8000 rpms.

Why wouldn't it work? Valve float is usually cause by a weak valve spring and a high lift cam.

 

How long have you used these springs?

The valve stem diameters are different, so I guess contact could be the culprit?

 

why dont you call crower and ask.

 

I have used them for at least a month. (LOL) so far, they haved worked good for me. OBTW, they are also dual valve springs.

 

Thanks.