any idea on the BHP of the early 1100 6 stack and 3 stack prototype motors from Mercury ? how about the 1250 BP and SBP motors?
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any idea on the BHP of the early 1100 6 stack and 3 stack prototype motors from Mercury ? how about the 1250 BP and SBP motors?
Cool Thread.
Thank you Gene, I was hoping you would figure out a way to do that. If I have the same issue with the next few documents, please feel free to do the same to them.Quote:
Originally Posted by GENE LANHAM
Happy New Year! :thumbsup:
BP----------------135 hp
BP Stacker--------140 hp
Super BP----- 145 hp
Super BP Stacker-150 hpQuote:
Originally Posted by Bob V
Merc said the SBP was 140 without stacks and 155 with
I've never seen any direct numbers on the stacked 1100's but Merc did say the motors used for a high speed run by Dave Switzer on a wing at Lake X were 125hp - and that's what the motors appear to be. A 15% increase over 110 would be approximately 125 and 15% is what stacks usually gave.Quote:
Originally Posted by Tom Smyth
6 stack vs 3 ... OF Christner's dyno cards for smaller motors show best hp with one stack per cylinder, but for sprint/heat racing racers preferred the 2 into 1 stacks because there was a major acceleration improvement.
Kenny Kitson is offering a set of 89ci/100hp/Merc1000 6 pipe stacks for sale that appear to be genuine Quincys ... which surprises me because they would have been made after most racers stopped buying 6 stacks and the Quincy catalog only showed 3 pipe stacks for 89ci motors ... these would have been custom made for a boat running straight away or a course with very long straights. Just the pipes welded to the plate, no filler or water tube.
I have heard that the 6 stack 1100 motors didn't last very long because of the noted increase in performance of the 3 stack motors. I think this is backed up with the fact that the 1250 kits were all 2 into one stacks as well.
Merc said the SBP was 140 without stacks and 155 with
I can't remember, were the SBP 89 cu. in. ? How could the SBP and Twister H.P. be the same?
The information is very interesting, but leaves out a couple of things. First the RPM dynamic. The last TIIX's ran at about 7800 RPM with single rings which was a bit above Dick's examples (7200-7500). Given that those motors posted better lap times on identical boats ( at least 2 in my personal experience) than the v6 175's, we can probably assume that the last T II-6carbs weighed in at about 180 hp or so. ( I had previously thought 200 but Dick obviously knows this stuff far better than the rest of us.)
I agree wholeheartedly about his choice of Sirois as a special talent during the limited horsepower days. Bill could get speed out of anything in OPC, Inboard, Offshore competition and enduro's. I continue to split my votes between Sirois and Seebold as the "Best Ever"...But, come to think of it, one can't go wrong with either choice.
Don't know for sure, but my guess is there isn't one ..... I think he's talking about John Culver.Quote:
Originally Posted by SCT
The 1250 was a cross flow 99.9 BPQuote:
Originally Posted by dale robertson
The 1350 was a direct charge 99.9 SBP
Dick said the 1350 stacker was about the same HP as the Twister .....
BP and Super BP motors were all 99.8 cubic inches. stacks or not.
You are correct (finally :rolleyes:) about the rpm factor. We're going to get there, discussion about it just didn't happen to be in the first email from Dick. He also talks about the lap time comparisons between the TII and the V6. I think I have three or four more of his emails to post.Quote:
Originally Posted by T2x
BTW - there were actually 3 Bill's that could drive the nuts off of a bolt back then .... I'll just let you dwell on that for a while! :reddevil:
I totally misunderstood what you meant when you said you had heard the 1100 didn't last very long, sorry about my first response, I just deleted it. Now that I understand the statement, I have to say that I"m not sure there were any 6 pipe 1100's. Seems that the 6 pipers were 1000's and the 1100's were 3 pipe. Jan Schoonover had the first pair of stacked 1100's that I saw and they were 3 pipers. The picture of Roy Ridgell in an early open cockpit Molinari, probably from 1967 (the 1100), is a 3 piper.Quote:
Originally Posted by Tom Smyth
Anyone recall 6 pipe 1100's?
3rd Bill... Schumacher, Pruett, Petty or Cooper ?....and of course Welch who could drive better than all of them except for the time he lost in his other career as a stand in for David Niven at film premiers. :leaving:Quote:
Originally Posted by willabee
I was told it was Don Ameche--------remember Niven was very english , whilst Ameche was the quintessential american.Quote:
Originally Posted by T2x