Hotcam Exhaust cam only install
Posted November 16, 2008 - 08:09 AM
Posted November 16, 2008 - 08:18 AM
Posted November 16, 2008 - 08:44 AM
Posted November 16, 2008 - 08:56 AM
So even though the specs are the same for the 4044 and the 4022. I will only see gains with the 4022? Not tryin to say your wrong but that dosen't make any sense to me. Hotcams claimed the only differance between the 2 cams is the autodecomp pin.
You will notice a small gain over the stock WR cam, but it more than likely will not perform as well as a stock YZ cam. The difference isn't the cam lobe shape, as that is the same between the two cams (as you already mentioned), the difference is in cam timing. The WR timing is one tooth retarded, and hence the decompression pin must be a couple of degrees different to run this timing. Running YZ timing gives better performance, but the decompression pin doesn't hit the bucket right if you are running this timing with a WR cam (or the 4044 cam). To run YZ timing you need either a stock YZ cam or a 4022 cam.
Posted November 17, 2008 - 06:51 PM
Posted November 18, 2008 - 02:31 PM
Posted November 18, 2008 - 03:31 PM
That is correct in that the only difference between the hotcams 44 & 22 cams is the auto decompression pin length. you can see this on their webiste. the 44 is has a shorter pin---smaller compression ratio engines. the 22 has a longer pin---larger compression engines. both cams have the same timing.... hotcams recommends that you do not do the "timing trick" with their exhaust cam, this is because if you compare the timing marks on their cam vs. the stock you will count 1 extra tooth.....they have built this into their cam sprocket timing to already give you max power.
I called them and this is exactly what they told me. The timming is the same on both cams. I bought it off e-bay. Brand new $90 shipped. I should receive the cam by this weekend. I will install it and report my findings.
Posted November 18, 2008 - 04:19 PM
Posted November 18, 2008 - 05:09 PM
"Rich, the only difference between the two cam shafts is the decomp. pin length. Since the YZ450F is a kick start only you need more decompression to make it easier to start. All other specs. are the same. Thank you."
When I think about this statment it dosen't make sense from the stand point that my bike kicks over pretty easily. But I assume they are the experts on their cam's. I believe most of the issues people had with their e-starters came form them mistakenly installing the 4022 cam in the WR. Thinking they needed the YZ cam to get YZ timming. This is only my theroy.