Re: New Engine Build
Posted: Sun Sep 10, 2017 3:01 pm
Rohan, should that McCoy cam spec be .460 lift? The .360 you mention seems a bit tame for you!
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Davidb wrote:Rohan, should that McCoy cam spec be .460 lift? The .360 you mention seems a bit tame for you!
2cams70 wrote:Hi Rohan,
I can check the unmodified L16 crank I have here if you want another check of the grub screw size. I would have thought it to be some kind of metric thread given the Japanese origin??
SJ Lambert wrote:Hi Rohan, I was talking to the guys at Crankshaft rebuilders just the other day about the stretch figure for those same bolts. They agree with your figure on stretch with the caveat that it's best done with the "Blue" ARP "moly" (Ultra/Torque) lubricant - with the older superseded "white" packaged stuff the figure can be less - the "blue" mix gives the most consistent tensioning. I found when doing mine that once you edged over 5 thou stretch the bolts "tightened" and to get even another half thou required a bigger lean on the tightening spanner - I ran a torque wrench over all mine set at 55 lbs and none of the moved after having been stretched 5 and a half thou.
rgh0 wrote:I spent the spare time working on the cam shimming and checking clearances on the head assembly. I cant continue with the final assembly until I get the sump and front cover fitted and then the bore and stroke checked by the official scrutineer and the block sealed to guarantee I am am not cheating on capacity.
Rohan
nmauduit wrote:rgh0 wrote:I spent the spare time working on the cam shimming and checking clearances on the head assembly. I cant continue with the final assembly until I get the sump and front cover fitted and then the bore and stroke checked by the official scrutineer and the block sealed to guarantee I am am not cheating on capacity.
Rohan
Thank you for the update : would you have photos of the baffled sump before putting it back on, by any chance ?