MORRIS COOPER S 501 wrote:
Kev what about the alloy stubsacks you make have you noticed any difference with them fitted
Yes I've noticed a difference, they are much better at low rpm as you get on the throttle, because the carb's mixture control is better.
Vizard's book indicates around 5% better flow from fitting stubstacks.
I have not done any before and after dyno testing, but both Vizard and GR say that stubstacks like these are worth having (if you have no room for trumpets). Any radius above 3mm will work- mine are now ~5mm rad.
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
