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03-10-2018, 11:33 AM
Replies: 32
Views: 1,973
Posted By tomcat

What Jim said... I can't blame the team...

What Jim said...

I can't blame the team owners for wanting to get off the blown engine merry go round, but why is this being proposed as Mercury only? I can imagine someone like Billy Mauff moving...
02-28-2018, 08:27 AM
Replies: 31
Views: 2,690
Posted By tomcat

What phragle said... As a decent first...

What phragle said...

As a decent first approximation (for bench racing purposes only), HP required goes up as the square of the desired speed increase. Following this equation, if the Outerlimits...
11-17-2016, 07:44 PM
Replies: 27
Views: 1,986
Posted By tomcat

It already was a drag race. Just as an example,...

It already was a drag race. Just as an example, boats capable of 170 mph (with their highest pitch and lots of room) were lucky to hit 150 at LOTO and a prop change was required. The shorter course...
11-01-2016, 04:05 PM
Replies: 45
Views: 13,792
Posted By tomcat

The HP gap may be market driven. It makes sense...

The HP gap may be market driven. It makes sense in a world where the 48 MTI outsells the 36 MTI by a ratio of 10 to 1. (That's just my impression, not privy to MTI sales figures)
10-24-2016, 07:03 PM
Replies: 212
Views: 29,658
Posted By tomcat

Here is an interesting control used in a somewhat...

Here is an interesting control used in a somewhat similar situation; anti wheelie control. In the 20 second video you can see the system reacting three times to drop the nose of the bike. When fuel,...
08-31-2016, 09:32 AM
Replies: 83
Views: 12,172
Posted By tomcat

Amazing accomplishment!!! Your intercooler seems...

Amazing accomplishment!!! Your intercooler seems to work...:champs:

Tom
08-28-2016, 08:51 AM
Replies: 71
Views: 10,163
Posted By tomcat

The Tuff 28 does exactly what it was designed to...

The Tuff 28 does exactly what it was designed to do and does it well. Your comment could apply to a lot of boats at the shootout and misses the point.
Forum: General Q & A
07-27-2016, 03:39 PM
Replies: 133
Views: 9,884
Posted By tomcat

True that. Bring in 3633 CFM and the intake air...

True that. Bring in 3633 CFM and the intake air temp will be ~ 110F in that example. Cold air intakes make sense and are common on supercat lites where the big 12" air duct entering the engine...
Forum: General Q & A
07-25-2016, 05:20 PM
Replies: 133
Views: 9,884
Posted By tomcat

The amount of air flow you need to remove heat...

The amount of air flow you need to remove heat given off by the engine is much higher than the amount of air needed for combustion. You can get a feel for this by looking at performance data from...
Forum: General Q & A
05-11-2016, 10:45 AM
Replies: 5
Views: 440
Posted By tomcat

Not saying they have what you want but these guys...

Not saying they have what you want but these guys are good.

http://www.totallystainless.com/
05-10-2016, 10:43 AM
Replies: 137
Views: 26,061
Posted By tomcat

Re: the picture - what failed first? Did the...

Re: the picture - what failed first? Did the U-joint fail and take out the case or vice versa?
Forum: General Q & A
04-24-2016, 09:16 PM
Replies: 16
Views: 1,618
Posted By tomcat

Why does this engine have solid cam followers...

Why does this engine have solid cam followers that need lash checked? Don't most modern 4 valve engines have hydraulic valve lash adjusters which require no maintenance?
Forum: General Q & A
03-02-2016, 03:52 PM
Replies: 0
Views: 314
Posted By tomcat

Higher octane fuel in our future?

As vehicle engines are downsized to meet fuel economy targets, researchers at MIT are suggesting that higher compression ratios and an increase in octane from RON 91 to RON 98 are part of the answer....
12-03-2015, 02:52 PM
Replies: 3
Views: 563
Posted By tomcat

I've never tried to put rumors into formulas...

I've never tried to put rumors into formulas :lolhit: but I'll assume that it really is 32 psi boost.

Start with a perfectly good 200 HP NA engine. Now reduce it's compression ratio. Next, add the...
11-19-2015, 11:35 AM
Replies: 21
Views: 1,461
Posted By tomcat

If you want to appreciate the subtle differences...

If you want to appreciate the subtle differences between Americans and Canadians consider this analogy...Americans think they are Superman; Canadians think they are Clark Kent. And that anthem...
08-12-2015, 07:40 PM
Replies: 4
Views: 666
Posted By tomcat

Good luck guys! A cube function...haha. I guess...

Good luck guys! A cube function...haha. I guess that's what people really mean when they say cubic dollars.
08-06-2015, 12:59 PM
Replies: 79
Views: 15,427
Posted By tomcat

A lot of cruisers that size have a bigger...

A lot of cruisers that size have a bigger platform anyway. That's what I'd be doing. Put the ladder on one side (or both sides).
08-05-2015, 12:56 PM
Replies: 79
Views: 15,427
Posted By tomcat

Looking good! What drive ratio do you use on a...

Looking good! What drive ratio do you use on a big boat like that?
04-20-2015, 01:40 PM
Replies: 2
Views: 753
Posted By tomcat

Any more news on this model?

Any more news on this model?
03-22-2015, 06:48 PM
Replies: 13
Views: 1,267
Posted By tomcat

Re: strain gauges, these guys were at PRI ...

Re: strain gauges, these guys were at PRI

http://tecatperformance.com/

But it might be easier just watching RPM and controlling electronic throttles . Logic would be something like:

1. If...
12-17-2014, 09:26 PM
Replies: 39
Views: 5,321
Posted By tomcat

Never going to see that much HP naturally...

Never going to see that much HP naturally aspirated in a boat unless you have a multispeed transmission.

Old article but good read:
...
12-17-2014, 09:12 PM
Replies: 39
Views: 5,321
Posted By tomcat

Did the math; 3 HP per cubic inch is the new...

Did the math; 3 HP per cubic inch is the new standard...
11-19-2014, 09:18 AM
Replies: 1
Views: 441
Posted By tomcat

ttt

ttt
11-17-2014, 12:41 PM
Replies: 1
Views: 441
Posted By tomcat

Tyson Garvin - empty your PM box

And/or send me a PM.

Thanks,

Tom
10-17-2014, 08:08 AM
Replies: 8
Views: 643
Posted By tomcat

Interesting thread - if you have the breakdown of...

Interesting thread - if you have the breakdown of hours by RPM range from the ECM that would be good to know for a true comparison.
Showing results 1 to 25 of 500
 


 
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