I agree that fuel and air are critically important in this situation, I am saying that what I have is what I have, I am looking for input on things other than fuel and air.
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RCP
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Pulling Forum
Lewis
What cam or whose cam would you suggest?
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RCP
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Pulling Forum
I am trying to avoid making this a discussion on the fuel and air systems, they are as good as I can afford.
I am trying to get some insight into engine changes that would benefit the engine from a power and pre-turbine standpoint.
Thanks
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RCP
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Pulling Forum
I have brought this class up before, but for those who are unfamiliar, see the following list of key rules;
7k and 8k # weight classes
18.4 x 38 Non cut tires
360 in3 limit
3000 RPM limit
Rotary injection pump
Single 3LM466 max turbo size (smaller allowed)
No water injection or intercoolers
No speed limits
Stock intake and exhaust manifolds
,
We are running a Cummins 5.9 that co
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RCP
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Pulling Forum
That sounds like the missing link in this thought process, I believe the start of injection changes as the injection duration changes with load. It would be interesting to see a fixed RPM plot of load versus start of injection and load versus injection duration.
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RCP
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Pulling Forum
That is a good point, I have checked timing with the valve cover off and both valves are closed, so I believe we are correctly timed. The engine starts well and we made decent power at the track, but had excessive pre-turbine temps.
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RCP
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Pulling Forum
We have a 5.9 Cummins and are running a Stanadyne rotary pump and I am confused on the injection pump timing. I compared an injector timing light that clamps to the #1 injector line to the static timing based on the marks in the pump. There is a major difference, the static timing is about 20 advanced compared to the dynamic timing. Also the engine seems to want more timing, I say this because we
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RCP
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Pulling Forum
Contact
Dwight Boice
281 S Franklin St
Prospect, PA 16052
(724) 865-1162
He is a notary and has converted titles for other people.
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RCP
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Pulling Forum
For those of you who may not know where the pull is located, it is located approximately 16 miles north of the intersection of I-79 and I-80, with excellent access to the highway. The club and the property owners have been working hard to prepare the property, there is excellent parking and the weather report is fantastic. Come join us to watch and participate is a great show.
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RCP
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Pulling Forum
Pull schedule in western Pa for 8/21 & 8/22, Northwest Pa Truck and Tractor Pulls
Website
Facebook
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RCP
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Pulling Forum
Pull schedule in western Pa for 8/21 & 8/22, Northwest Pa Truck and Tractor Pulls
Website
Facebook
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RCP
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Pulling Forum
Most if not all of the plasma ignitions were removed from slow speed natural gas engines and replaced with pilot precombustion chambers. The plasma systems had issues meeting emissions guarantees and also had reliability issues.
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RCP
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Pulling Forum
They have a facility in Irwin Pa outside of Pittsburgh Pa.
Rich
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RCP
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Pulling Forum
The factor not considered in the explanation above is system back pressure, high system back pressure means there is residual gas (exhaust) trapped in the cylinder that prevents incoming fresh air from getting into the cylinder. I have not tried the math but perhaps delta P for use in the gas law would work?
Rich
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RCP
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Pulling Forum
There has been a lot of sniping and complaining on the forum lately, it is easy to make rude and disparaging comments when it is done anonymously. I know this has been discussed before, but I believe it is time to require sign ins with names and addresses.
Rich
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RCP
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Pulling Forum
As cruel as it sounds, the only statistic that is somewhat dependable is deaths per million of inhabitants. I say this because the number of deaths per inhabitants is regardless of the number of people tested. Obviously if you test more people you will find more Covid, the number of deaths is irrespective of any testing. The one thing is the cause of death has to be properly stated.
The number
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RCP
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Off-Topic Forum
What I see, but have no answers;
1) People are not afraid to not work. In our fathers and mothers time, if you did not work you did not eat, had no place to live and risked death.
2) Because people are not afraid to not work, we rely on foreign suppliers to provide what we want.
3) Because people are not afraid to not work, we import labor by millions to perform tasks.
4) There are lo
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RCP
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Off-Topic Forum
Two of our local small fairs have cancelled for this year, they were both scheduled for July of 2020.
Rich
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RCP
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Pulling Forum
You guys are getting caught up in the weeds with little details. The point of RCP's entire post is that it's a huge risk for the promoter to take this summer. It's an extremely risking proposition and the promoter bears all that risk. Events will cancel because of the increased risk and the uncertainty of fans and the lack of sponsors and potentially volunteers... even if things sl
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RCP
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Pulling Forum
The thing that most people are ignoring are the financial aspects;
1) How much money does it take to hold a pull at a place like Bowling Green? $250,000 ?
2) How much money goes to premiums? $50,000 ?
3) How many people does it take to run the pull? Track officials, parking attendants, food vendors, ticket sales etc? 100 ?
4) How much money do sponsors contribute? $100,000 ?
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RCP
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Pulling Forum
Hopefully they are not solely dependent on pulling for their incomes, the few that I know have other things that bring income.
Rich
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RCP
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Pulling Forum
We are currently running Firestone bias plies at 12 psi.
Rich
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RCP
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Pulling Forum
We are pulling an Oliver with a 5.9 Cummins (small turbo, rotary pump) in a no speed limit 7k and 8k pulling classes. We are limited to 18.4 x 38 tires, no cuts allowed, would you prefer radial or bias ply tires and why?
Thanks
Rich
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RCP
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Pulling Forum
Western Pa is also pulling a lighter weight version called Tough Farm, 7000 and 8000 classes, lots of fun and looking for more competitors.
Rich
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RCP
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Pulling Forum
