This is interesting, to say the least! I've learned that dyno operators
can - like great accountants - make figures lie and liars figure! This
comes from a VP I spoke to at Superflow, where he said that by changing a
few programming parameters and doing a few different tests you can have a
15% swing of HP produced - without breaking the "rules" of dyno operation.
I use John Dodd's dyno - he tests using perhaps the most conservative
methods and probably gets the lowest HP readings - but he is notoriously
closemouthed about what engines he tests produce. I think that if he
didn't have to let me know what MY motor did he wouldn't! But his
customers sometimes let a few things slip...
From conversations I believe that great Twin-Cam will produce up to 180
HP. Perhaps a Hart will get a bit more but not much.
I believe that fully legal FFord motors that win major championships -
Monoposto and modern racing - make no more than 112 - 115 HP.
I think that Junior engines - and many other Ford based motors - can get up
to 100 HP per Litre. This gives a great Junior engine about 110 Hp. I
think that pre-cross flow 1500's can get about 135 HP. A really good 1600
cross-flow can get 160 HP.
Keep in mind that by changing the way that the test is run, that FFord at
112 HP could easily be given a printout showing 129 HP.
The best dyno continues to be a really long backstraight...
Brian
At 05:57 PM 09/15/2000 -0400, Simon Favre wrote:
>Myles and others,
>
>A question has come up on another mailing list. What are typical BHP
>figures for the Lotus/Ford twincam motor in full race trim? How
>about a LEGAL Formula Ford? How about a Ford 105E Formula Junior?
>
>My "guestimates" based on other discussions are:
>
>180-200 BHP Lotus Twin Cam 1600
>120-130 BHP Formula Ford 1600 in legal vintage trim
>110-120 BHP Ford 105E Formula Junior motor
>
>Simon
Brian Evans
Director, Strategic Accounts
UUNET, A WorldCom Company
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