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Thanks for the response! I didn't think that the air filter would have much effect on the backfiring. I'm curious about how a crack in the exhaust manifold will cause misfiring. I've heard that it will, but I have no idea why it would. I also would like to know how it might not show up in the...

I don't know how fast this attempt will get, but I think I might try getting 400mph on diesel a different way. For one thing, there's an engine of ideal size, weight, and 1800+ hp that's been around for some 65 years already. It's powered aircraft to over 500mph, and it was one of the more...

Isn't there another reason why they are moving to thin oil? Even though you my be maintaining the same oil pressure, doesn't more thin oil move through engine than thicker oil? I may be mistaken, but I thought part of the reason for the new thin oils is that with thin oil, you can have more...

Thank you all for your replies!! I'm sorry I hadn't gotten back sooner, but I have been unbelievably busy lately and I haven't had much spare time. I'll try to reply to all of the questions you asked me, but it may get a little messy so bear with me.... Let me clarify the configuration of the...

Greetings from the crew of the Arizona Railway Museum. I came across this forum and thought you might be interested in taking a crack at a problem that's had us beat for months. Our small locomotive, a 1943 30 ton Plymouth, is powered by a 1943 Le Roi RX-1V 250hp V8 gasoline engine that has...