GT mowog wrote:
david rosenthal wrote:
This eng is just a experimental one and IF !!!!!! it works them the next one is going to have full roller bearing billet steel crank.
There are some split precission metric rollers available so I might re-machine brg caps/crank and try these.
Just a mad idea,but you never know until you have a go.
Mmm...I do love those mad ideas.......
Cooper Split Bearings??? What would you do for the lubriction system? It would require a fair bit of re-work as the 'standard' parts of the engine would require a high / moderate pressure with moderate / low flow characteristics, where as the rollers would want low pressure / high volume?
Again, I don't doubt that you would have a plan (fully roller bearing the engine top to bottom?)
The brgs are split needle rollers. The two halves have a shoulder to locate on the needles so lateral location is precise. The clearance is only a few thou and they have oil feed in both inner and outer cages.
The one for the center main is a needle roller with thrust either side[needle] . When I get home I will give you the part No. and dimensions, and I should have a price on a full set. This will determin whether I use them.
As for oil pressure with the T/C set-up with std oil pump, the problem I have is way too much oil flow with std relief V/V spring.
The blower,head and main/bigends will all be pressure fed but with the dry sump set-up the oil tank will be fabricated into the front of the sub frame behind the valance panel. This will position it lower than the sump base and the drain will be gravity feed into tank. No need for a scavange pump.
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