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  1. dwedel

    [b]NBN Normal Butane Number, Fuel Gas Knock Resistance[b/]

    Interesting, I did not know there was so much to the fuel gas requirements. I have not had to worry about the gas value as we have "pipeline" gas for fuel. A correction on the Superior engines, they were originally made by White-Superior, and then when White had problems Superior was sold to...
  2. dwedel

    Bearing help

    DDR, I agree with Rnd2, We really should be starting a new thread, instead of joining an old one. I'm not sure how much I can help you, we only have GT and GTL series engines. I have done some research on Aluminum, Bronze and Trimetal bearings. For more information on the bearing materials...
  3. dwedel

    Ignition sources on gas power plant

    I have seen some small personal gas detectors like Tickle talked about. Those would be nice. dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  4. dwedel

    Diesel Engine Driven Generator

    LOL. You can tell how much I know about the ocean! dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  5. dwedel

    Diesel Engine Driven Generator

    To meet the emissions, it would help to lower the air intake temperature; then you could have a lower combustion temp. I would guess that as you are approaching air temperature it makes the air-air more reasonable. Too bad you don't have some 60F seawater on the other side of the hull to use...
  6. dwedel

    Maintenance on Cat 3520B gas engine

    So what is maintenance like on a Cat 3520? I think a few of you have had a chance to see them. Are the heads pretty easy to change out? There are also 20 heads compared to the 12 cylinder Waukesha 7044. Supposedly the Cats are good for a 30K hour head change and 60K in-frame overhaul, has...
  7. dwedel

    Diesel Engine Driven Generator

    On our land based units we have a main and auxiliary coolant systems. The main is for the engine block jacket water system, and the auxiliary is for the aftercoolers, oil cooler, and compressor cylinders depending on temperature requirements. Both are re-circulating glycol/water mixtures. In...
  8. dwedel

    Diesel Engine Driven Generator

    I would get a second opinion on the EPA code for California. I have been trying to listen to the air quality rules and their future applications and I haven’t heard of anything like this. If you find out why this is required please post it here as I would like to know. Or maybe when you find...
  9. dwedel

    Ignition sources on gas power plant

    I have seen different people rate the same area differently. We have natural gas compression stations and take a class 1 div 2 approach that all the gas should be in the pipe, unless something unusual has happened. Correct me if I’m wrong here, but you have a power generator station with...
  10. dwedel

    Clean Emissions = Higher Operating Temp ??

    I think your basically correct NeilDS. I was taught that Nox forms at longer dwell time at higher temperature. Thus a more advanced ignition event will result in higher temperatures and pressures, and lower exhaust temps as more of the heat will stay in the cylinder. A more retarded ignition...
  11. dwedel

    Wire line computer analysis

    I sent the info. I looked at your bio, your not all that far away. We have been getting our field units packaged in your neck of the woods. dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  12. dwedel

    Wire line computer analysis

    We have had our RotoAlign Pro for a year now. Last year I rented the BoreAlign tool twice and measured bearing bores of an Ingersoll-Rand 82KVG frame that we had just regrouted, and then measured the bearing bores of an Ajax DPC-600, that we crashed some con-rod bearings in. We also received...
  13. dwedel

    Wire line computer analysis

    Now that I have read the thread I don't think that I can add anything to it. Pruftechnik BoreAlign which is laser system I use, wouldn't have an accuracy of .0002" in a operating recip compressor station. (too much vibration) I'm not sure how well it would work in a quiet station. They do...
  14. dwedel

    Bearing Problem

    I was just trying to state some ideas to start discussion. It sounds like you have some good information to start on. Most of my ideas or thoughts were ways that you might get unforseen loads on your bearings. Good Luck, dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  15. dwedel

    Surge Line

    Yes, the flow reverses. You are trying to push gas from a low pressure bottle to a high pressure bottle using centrifugal "forces" and the high pressure momentarily overcomes the centrifuge. As you are close to steady state conditions the flow will go back and forth across the line and destroy...
  16. dwedel

    Wire line computer analysis

    Yes, I have heard of it, and have used a laser verion of the process. I will try to respond with more info this weekend. dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  17. dwedel

    NG LEL, or safe distance from heater/

    I don't think that you can have an open flame (ignition source) in a class 1, div 2 area. If you don't have the code books to prove this to yourself, you better get them. DOT is the regulating body we deal with, and have the codes I work by, but there are other codes. There are reasons...
  18. dwedel

    Lean buring a Natural Gas powered Reciprocating engine

    You know, go wander around the gmrc.org site. I bet they have some links to some aftermarket companies that can provide a turnkey lean burn or a turnkey catalytic converter package for you. Just one more thought. dwedel Hotrod Big Engines! For site policies and guidelines see faq731-376
  19. dwedel

    Lean buring a Natural Gas powered Reciprocating engine

    crap, hit submit, not edit ... Make sure you price out the cost of replacing the converter elements every one to two years. If you have backfiring problems, you will want to fix them, the first time you destroy the converter elements. dwedel Hotrod Big Engines! For site policies and...
  20. dwedel

    Lean buring a Natural Gas powered Reciprocating engine

    Ajax has a lean burn kit for their engines. New heads, precombustion chambers, and fuel delievery system. Superior has a lean burn kit, which includes heads, turbo upgrade, precombustion chambers, and fuel delievery system. It has been done, and can be done. Do you want to pay for it. You...

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