Hot Singles ! - Pictures

**Tom Smyth** · 01-01-2014, 06:28 AM

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.

**willabee** · 01-01-2014, 02:37 PM

Originally Posted by GENE LANHAM

Thanks, Bill--Maybe I can save everyone a few mouse-strokes--

Happy New Year!!!

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.

Happy New Year!

**mark benson** · 01-01-2014, 03:15 PM

BP----------------135 hp
BP Stacker--------140 hp
Super BP----- 145 hp
Super BP Stacker-150 hp

Originally Posted by Bob V

I just awoke from my nap... Z-Z-Z-Z-Z-Z-Z in hopes of getting the numbers before another year creeps by, but unfortunately, it looks like that is not going to happen - at least not this year. With that thought in mind, I will post my SWAG numbers and you can tell me if I win the gold star...

Twister ---------155 hp

Twister 1--------165 hp

CB Twister-------172 hp

Twister 2--------195 hp

T2X--------------205 hp

Happy New Year...!

**Mark75H** · 01-01-2014, 10:31 PM

Merc said the SBP was 140 without stacks and 155 with

**Mark75H** · 01-01-2014, 10:34 PM

Originally Posted by Tom Smyth

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.

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.

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.

**Tom Smyth** · 01-02-2014, 06:16 AM

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.

**dale robertson** · 01-02-2014, 08:55 AM

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?

**T2x** · 01-02-2014, 09:20 AM

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.

**willabee** · 01-02-2014, 10:56 AM

Originally Posted by SCT

Who was the Bill from Ohio? Petty?

Don't know for sure, but my guess is there isn't one ..... I think he's talking about John Culver.

**willabee** · 01-02-2014, 11:05 AM

Originally Posted by dale robertson

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 1250 was a cross flow 99.9 BP

The 1350 was a direct charge 99.9 SBP

Dick said the 1350 stacker was about the same HP as the Twister .....

**Tom Smyth** · 01-02-2014, 11:05 AM

BP and Super BP motors were all 99.8 cubic inches. stacks or not.

**willabee** · 01-02-2014, 11:22 AM

Originally Posted by T2x

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.

You are correct (finally

) 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.

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!

**willabee** · 01-02-2014, 01:10 PM

Originally Posted by Tom Smyth

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.

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.

Anyone recall 6 pipe 1100's?

**T2x** · 01-02-2014, 02:03 PM

Originally Posted by willabee

You are correct (finally

) 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.

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!

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.

**jackie wilson** · 01-02-2014, 02:42 PM

Originally Posted by T2x

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.

I was told it was Don Ameche--------remember Niven was very english , whilst Ameche was the quintessential american.