Re: New Engine Build
Posted: Wed Sep 06, 2017 8:34 am
Turns out my crank is an L16; 4 counterweights. Thanks to 2cams for the clarification. Rob, I have no plans
for the crank.
for the crank.
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Davidb wrote:Rohan, as a side issue-what about the BDA and BDD used in Formula Atlantic back when? They were eight counterweight and the engines would rev safely to over 10,000 rpm--I have heard of 13,000 rpm from one race car builder. How different are they to the Twin Cam crank. Full disclosure: I have one of these cranks in my Twin Cam.
gjz30075 wrote:Now that we've severely hijacked Rohan's thread, my Datsun crank has 'N8240' cast in it. Does this
mean early or late?
2cams70 wrote:gjz30075 wrote:Now that we've severely hijacked Rohan's thread, my Datsun crank has 'N8240' cast in it. Does this
mean early or late?
Maybe your's is L18?
.
SJ Lambert wrote:Time to cosy up to our local friendly pilots as far as that avgas ban goes eh Rohan!!
rgh0 wrote: I also had it drilled and tapped to accept long sprocket bolts. This allows the bolt down past the first cam bearing and reduces the risk of breaking the cam which is very real with a high lift cam at high RPM. The long bolt needs to be hollow drilled and grooved and cross drilled to allow oil to flow down the cam from the first bearing to feed all the other cam bearings.