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Power output
https://ausmini.com/forums/viewtopic.php?f=2&t=97602		 Page 1 of 1
Author:  ricksmini [ Tue Aug 07, 2018 7:51 am ]
Post subject:  Power output
Hi all just had an engine done and was wondering what sort of power I would get from it at the wheels. It's a 1275 20thou over light head work and 1:5 roller rockers 45 weber?
Author:  drmini in aust [ Tue Aug 07, 2018 10:37 am ]
Post subject:  Re: Power output
Depends on what dyno, all are different. Mine made 76HP ATW on a Dyno Dynamics with an RE13 cam, and 86.6 with the RE282. See other specs below.
But my head has big valves and ports, and the Redline manifold I spent 9 hours porting.
Author:  deluxe67 [ Thu Aug 09, 2018 3:51 pm ]
Post subject:  Re: Power output
Like the good Doc says, it's very hard/ impossible to compare numbers from different dyno's in any meaningful way. For what it's worth (not much!), my engine which is more modified than yours, has a number of 75 Hp at the wheels at a place I would not recommend or go to again!
Author:  gtogreen1969 [ Thu Aug 09, 2018 4:01 pm ]
Post subject:  Re: Power output
ricksmini wrote:
Hi all just had an engine done and was wondering what sort of power I would get from it at the wheels. It's a 1275 20thou over light head work and 1:5 roller rockers 45 weber?


At a guess - 50 to 55

An 80 BHP engine has about 50 Hp ATW.
Author:  deluxe67 [ Fri Aug 10, 2018 2:12 pm ]
Post subject:  Re: Power output
What was a standard Cooper S at the wheels?
Author:  gtogreen1969 [ Fri Aug 10, 2018 2:13 pm ]
Post subject:  Re: Power output
deluxe67 wrote:
What was a standard Cooper S at the wheels?


From Memory 45 HP ATW, 78 HP at the flywheel.

I will do a search on here to see if there is any past discussions.
Author:  gtogreen1969 [ Fri Aug 10, 2018 2:34 pm ]
Post subject:  Re: Power output
There is a bit about drive train loss here- viewtopic.php?f=2&t=66127&p=766424
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