bruce 1 wrote:
Buckmaster wrote:
Hey Gary i m trying to understand the geometry post's on samba,but i will be running 1.4's with a engle 110.The motor i have was previusly built and running,but the guy ran regular fuel and burnt a hole in the piston.I have the pushrods that came with the motor,if i loosen the adjuster almost all the way,keeping a few threads and then adjust it down until it touches the pushrod,and then open the valve to full lift,the adjuster should be parallel to the valve.Or could i put all them in on 1 side and adjust them to theproper clearence,what should i look for to be able to tell if they are the correct size.By the way Clearence should be around 3 to 6 thousands,right?????
The burnt hole could have been too lean? I run 1.4s with a 110 it works great for me.
Yeah I've seen people use them too.
Engle doesn't recommend them though, ramp angles on the lobes make it hard on cams and lifters at higher RPMS.
An FK 8 on 1:4s is pretty close to a W110 on 1:4s.
The FK 8 should actually have a little more up in the RPM band.
You can see the specs here take the net cam lift x the ratio rocker number, in this case 1.4.

Sorry about the blurry picture, it's from from Engle's site..............
FK8 with 1:4
.382" lift at the cam.
.534" lift at the valve
298° advertised duration
258° duration @ .050"
W110 with 1:4
.392" lift at the cam
.548" lift at the valve (calculated, this number not on this page)
284° advertised duration
247° duration @ .050" lift
It's the lobe profile that makes the W110 less suitable for the 1:4 rockers.
Not dissing ony anybodys choice of cams but the FK8 is the cam of choice for most all the engines I build......

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Gary
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