Search: Posts Made By: tomcat
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Forum: General Boating Discussion 11-17-2016, 08:44 PM
Replies: 27
Views: 1,913
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...
Forum: General Boating Discussion 11-01-2016, 05:05 PM
Replies: 19
Views: 6,512
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)
Forum: General Boating Discussion 10-24-2016, 08:03 PM
Replies: 212
Views: 29,129
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,...
Forum: General Boating Discussion 08-31-2016, 10:32 AM
Replies: 83
Views: 11,852
Posted By tomcat
Amazing accomplishment!!! Your intercooler seems...

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

Tom
Forum: General Boating Discussion 08-28-2016, 09:51 AM
Replies: 71
Views: 9,899
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, 04:39 PM
Replies: 133
Views: 9,294
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, 06:20 PM
Replies: 133
Views: 9,294
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, 11:45 AM
Replies: 5
Views: 423
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/
Forum: General Boating Discussion 05-10-2016, 11:43 AM
Replies: 137
Views: 25,244
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, 10:16 PM
Replies: 16
Views: 1,579
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, 04:52 PM
Replies: 0
Views: 297
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....
Forum: General Boating Discussion 12-03-2015, 03:52 PM
Replies: 3
Views: 524
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...
Forum: General Boating Discussion 11-19-2015, 12:35 PM
Replies: 21
Views: 1,426
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...
Forum: General Boating Discussion 08-12-2015, 08:40 PM
Replies: 4
Views: 652
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.
Forum: General Boating Discussion 08-06-2015, 01:59 PM
Replies: 79
Views: 14,685
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).
Forum: General Boating Discussion 08-05-2015, 01:56 PM
Replies: 79
Views: 14,685
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?
Forum: General Boating Discussion 04-20-2015, 02:40 PM
Replies: 2
Views: 732
Posted By tomcat
Any more news on this model?

Any more news on this model?
Forum: General Boating Discussion 03-22-2015, 07:48 PM
Replies: 13
Views: 1,216
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...
Forum: General Boating Discussion 12-17-2014, 10:26 PM
Replies: 39
Views: 5,246
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:
...
Forum: General Boating Discussion 12-17-2014, 10:12 PM
Replies: 39
Views: 5,246
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...
Forum: General Boating Discussion 11-19-2014, 10:18 AM
Replies: 1
Views: 436
Posted By tomcat
ttt

ttt
Forum: General Boating Discussion 11-17-2014, 01:41 PM
Replies: 1
Views: 436
Posted By tomcat
Tyson Garvin - empty your PM box

And/or send me a PM.

Thanks,

Tom
Forum: General Boating Discussion 10-17-2014, 09:08 AM
Replies: 8
Views: 628
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.
Forum: General Boating Discussion 05-11-2014, 02:40 PM
Replies: 13
Views: 1,511
Posted By tomcat
Yes, call Bob. First thing he's going to ask you...

Yes, call Bob. First thing he's going to ask you is what heads.
Forum: General Boating Discussion 03-13-2014, 04:27 PM
Replies: 66
Views: 6,262
Posted By tomcat
Can someone tell me why torque peak at 5100 RPM...

Can someone tell me why torque peak at 5100 RPM is a good idea for a marine engine?
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