Hot cams Stage 2 exh with 2 different timing Mark's????

tzmike wrote:

No paperwork on this so I'll ask you guys. The dots to align to the head on exh cam have 2 dots plus the 12 o'clock...

No paperwork on this so I'll ask you guys.
The dots to align to the head on exh cam have 2 dots plus the 12 o'clock dot
What's the difference between the 2 head alignment dots. I'll call them upper as in 10 o'clock and lower as 9 o'clock.
One for bottom to mid and the other for mid to top end ?
I'd like to know which does what.
Thanks

tzmike wrote:

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further Will use the longer duration dot. But...

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further
Will use the longer duration dot. But yes, stage 2 exh has 2 different dots (power choice) on the sprocket. I will shoot the pic myself when I complete the ceramic bearings install

tzmike wrote:

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further Will use the longer duration dot. But...

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further
Will use the longer duration dot. But yes, stage 2 exh has 2 different dots (power choice) on the sprocket. I will shoot the pic myself when I complete the ceramic bearings install

Paul_Pitzonka wrote:

I Can assure you you’re not changing duration (as this is ground into the cam profile) also sounds like you’re using the more retarded timing of...

I Can assure you you’re not changing duration (as this is ground into the cam profile) also sounds like you’re using the more retarded timing of the two available... you will decrease piston to valve in doing so.. If this is combined with a higher compression piston I’d make sure you have ample clearance... ( I don’t use many hot cams, but I have installed a few have never come across this before)

tzmike wrote:

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further Will use the longer duration dot. But...

Found answer in Hot Cams custom cam builders section. Shorter duration is more bottom. Longer let's it rev further
Will use the longer duration dot. But yes, stage 2 exh has 2 different dots (power choice) on the sprocket. I will shoot the pic myself when I complete the ceramic bearings install

Paul_Pitzonka wrote:

I Can assure you you’re not changing duration (as this is ground into the cam profile) also sounds like you’re using the more retarded timing of...

I Can assure you you’re not changing duration (as this is ground into the cam profile) also sounds like you’re using the more retarded timing of the two available... you will decrease piston to valve in doing so.. If this is combined with a higher compression piston I’d make sure you have ample clearance... ( I don’t use many hot cams, but I have installed a few have never come across this before)

slipdog wrote:

It would be changing the overlap duration

tzmike wrote:

Hot Cams replied that the sprocket is used for multiple engines. Period. Great answer. Useless. So I will use the 12 oclock dot and the closest...

Hot Cams replied that the sprocket is used for multiple engines. Period. Great answer. Useless. So I will use the 12 oclock dot and the closest head dot for the timing. Tech support there would be great for spam calls...