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Search found 96 matches

by Tom Walker
Tue Mar 24, 2020 12:03 pm
Forum: Engine Tech
Topic: SCAT 9000 Limits
Replies: 47
Views: 1599

Re: SCAT 9000 Limits

Have been on friends boat and have seen them turning a stock small block Chevy 5200 R.P.M. as if that is its normal speed!
by Tom Walker
Wed Mar 04, 2020 1:53 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 151
Views: 9326

Re: Engine Masters rod ratio test results

gmrocket, thought the same thing. Needing 40+ degrees is saying something!
by Tom Walker
Mon Mar 02, 2020 7:05 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 151
Views: 9326

Re: Engine Masters rod ratio test results

Totally agree with your points and observations Randy, very interesting though why B.D.C. time is not talked about with as much fervor as T.D.C. time as it relates to effects of rod ratio. By the way, congratulations on your performance at the E.M.C. I saw you in Hot Rod magazine in 3 different pict...
by Tom Walker
Mon Mar 02, 2020 6:06 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 151
Views: 9326

Re: Engine Masters rod ratio test results

Long rod or short, most of the time the difference I believe to be insignificant as a power producer.
Randy, your thoughts about dwell at B.D.C. for the longer rod are not talked about as often and I have wondered why.
by Tom Walker
Mon Mar 02, 2020 2:18 pm
Forum: Engine Tech
Topic: SBC 18 Degree Cast Pistons?
Replies: 11
Views: 618

Re: SBC 18 Degree Cast Pistons?

Believe I read somewhere that the block just couldn't take anymore. Think it is a Cummings 5.9 diesel making some kind of insane torque before the kaboom!
by Tom Walker
Mon Mar 02, 2020 1:51 pm
Forum: Engine Tech
Topic: Engine Masters rod ratio test results
Replies: 151
Views: 9326

Re: Engine Masters rod ratio test results

Without each rod ratio engine completely optimized and tuned for that combination, I personally don't think it gives us anything except something to continue to discuss, which is fine. I do believe there is merit in using the best ratio for your particular application. If memory serves me, I believe...
by Tom Walker
Fri Jan 31, 2020 2:37 pm
Forum: Engine Tech
Topic: Engine Masters
Replies: 87
Views: 2196

Re: Engine Masters

Almost 5 pages wasted and we are not even talking about the original topic of the post. CAN WE MOVE ON.😬
by Tom Walker
Sun Jan 19, 2020 10:20 pm
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 12780

Re: 100 Octane Pump Gas by 2020?

In my opinion, for my industry, which is trucking, the holy grail of internal combustion engines is this. Good fuel mileage is definitely a need, but reliability and durability is paramount. Downtime is a deal breaker and downtime due to a crazy amount of complexity and endless number of sensors on ...
by Tom Walker
Sun Jan 19, 2020 4:23 am
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 12780

Re: 100 Octane Pump Gas by 2020?

After watching video of the Mazda skyactiv-x theory of operation, I had the impression it does not require high octane fuel. Lower octane fuel may help the compression ignition take place when it should. Sure looked like a complicated way to modify the simple diesel combustion process, but they want...
by Tom Walker
Sat Jan 11, 2020 11:16 pm
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 93
Views: 4347

Re: 1400 hp Big Chevy combinations

That power goal with that budget? I will be interested in the suggestions.
Maybe remove a 0 from the power goal or add a 0 to the budget😳
by Tom Walker
Thu Jan 09, 2020 2:23 pm
Forum: Engine Tech
Topic: Gains with lift beyond the point of max airflow?
Replies: 25
Views: 1467

Re: Gains with lift beyond the point of max airflow?

Very informative way to explain the situation Camking. Appreciate that.
by Tom Walker
Thu Jan 09, 2020 2:09 pm
Forum: Engine Tech
Topic: Why does 400" always win the EMC?
Replies: 40
Views: 4183

Re: Why does 400" always win the EMC?

From what I see at these dyno contests is this, the scoring rewards those who have the experience, knowledge, passion, time and equipment to test and the creativity to use all the above to the greatest efficiency. There are certainly opportunities afforded by the rules that come into play, but the s...
by Tom Walker
Sun Jan 05, 2020 11:40 pm
Forum: Engine Tech
Topic: How much is not enough ?
Replies: 7
Views: 723

Re: How much is not enough ?

Enough to hold what you are planning for, probably. Enough to hold for what you don't plan for, maybe not.
by Tom Walker
Mon Dec 23, 2019 12:01 am
Forum: Engine Tech
Topic: Heat Affected Valve Seat
Replies: 12
Views: 645

Re: Heat Affected Valve Seat

Looking at the picture makes me wonder if some of the heat from the exhaust seat made the intake seat warp or bow out some and create at situation where the intake valve was leaking hot combustion gases some.
by Tom Walker
Wed Dec 11, 2019 11:00 pm
Forum: General Tech
Topic: Tech Rules For The 2020 REC Dyno Contest
Replies: 24
Views: 1200

Re: Tech Rules For The 2020 REC Dyno Contest

My opinion is the contest will be "biased" toward the builder who is creative,enthusiastic, persistent in testing and yes, who is willing to put their money and time into their build. They will be rewarded by calling them the winner. From what I have seen both years so far, absolutely great builders...