mxt_77

Actually, you're not "bucking the trend" if your cams are not the parkerized ones. Only the parkerized ones seem to have issues. As stated in my previous thread, I replaced my parkerized (black) ones with the non-parkerized (silver) ones. I have about 7K miles on them and no issues (though I haven't inspected them in about 4K miles).

However... my question to you: Did you do a before/after dyno when you installed your cams? If so, could you post it? I'd be interested to see if you actually made any power.

Asura

The black ones were the SpecAV1- no longer in production for obvious reasons.

The SpecAV1 and SpecAV2 have completely different profiles.

mxt_77

Where did you hear this?

The black ones that I had were v2. IIRC, it was even stamped into the metal (I think I have a pic of that somewhere on my PC at home). From what I recall, the v1 had a low-cam profile that was better than stock, but the high-cam was the same as stock. (I'd have to dig up an old thread by Hams2000 and/or UL to verify). The v2 had an improvement on both the low & high cam lobes. The black ones that I had definitely offered an improvement over stock on both the low cam and the high cam.

However, I do agree that the black ones seem to have a different profile than the silver ones... considering the fact that I made good power with the black ones, but I make less power than stock w/ the silver ones.

If you look at the pictures of my damaged cams, I suspect that the black ones had a higher ramp speed than the stock/silver ones. The damage in one pic looks like impact damage, rather than sheer damage. To me, this would indicate that the roller rocker was jumping off the face of the cam and then crashing back into the nose of the cam lobe (even with the Toda valvesprings). So, maybe the new/silver Toda v2 cams have a lower ramp speed, to prevent this from happening. I dunno. Unfortunately, I no longer have the black cams, so I cannot measure them to compare. Maybe someone else that still has their black cams can measure them. I'd be willing to do the same for comparison.

biker1

mxt 77 I'll dig out the dyno and post but unfortunatly I only have the "after"

My understanding of the V1 V2 Mk1 differences ect was,

V1 origional ones (Black)
V2 Mk1 different profile to V1 (Black)
V2 Mk2 same profile as V2 Mk1 (silver) better hardening

V2 Mk2 (silver) had better "Hardening" on the lobes to combat the extreme wear issue.

mxt_77

I believe that what you've stated coincides with what Toda claims, also. However, in practice I'm not certain that this is the case. It seems that the v2 Mk1 may actually have a different profile than the v2 Mk2. That's the only way I can explain the fact that I get different results from the two, anyway.