I was out there again today watching a mates SR getting tuned. I pulled out the cams to compare to the "260 @ 9.15's" to the rest from the other night.
Again from the left are the Tomei 270 @ 10.25, middle is JUN 264 @ 10.5 and right is Tomei 260 @ 9.15.
The JUN's are definately more "triangle" than the Tomei's in both "Procam or Poncam". Yavuz is going to map the lift VS duration and lay it out on a piece of paper. I'd like to do a set of standard cams just for shits and giggles. I'm sure I have a set laying around somewhere.
haha. There will be a back to back. "that" project is humming along quite nicely .
The Tomei's are Ratshit. I spose thats what happens when they weld themselves to the cam caps. They can't be reused and will be cut up at some point for 'the project'.
You would think that. I had a 260 @ 9.15 poncam there too and it looked the same at the 270 (As in the big fat round nose) . Should have put that in the photo too. I'll do that when i'm out there next. Very interesting.
What I did notice just by running your finger over the lobe, the JUN has a 'bump' where the 'start of duration' starts. ALOT more pronounced than the procam. It obviously ramps open alot faster/harder than the tomei.
Here is an interesting little comparison.
On the left we have a Tomei procam which was in my old head. The profile was 270 @ 10.25mm. On the left we have a JUN 264 @ 10.5mm. The shape is quite a bit different.
A few little updates from todays efforts.
"Strap the kids in".... Turbo's are nice and safe in the back.
Ceramic coating all done and wrapped up. Cheers Chris!