Allis Chalmers 226 Engine Headers

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   I would like to get some opinions on this header set up for an Allis 226 engine (https://www.keystoneturbo.com/product-page/allis-chalmers-wd-ramhead-header). It looks good and sounds good, but Keystone has not done any dyno testing for horsepower or torque. They are estimating 20 HP gain, I'm not sure if headers alone would gain that much. This should be a video of it set up and running on a WD https://www.facebook.com/100072292363147/videos/pcb.750550677364671/1534044748001184

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SLM(IL) Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 08 Sep 2014 Location: United States Points: 15	Post Options Post Reply Quote SLM(IL) Report Post Thanks(0) Quote Reply Topic: Allis Chalmers 226 Engine Headers Posted: 1 hour 56 minutes ago at 5:41pm
	I would like to get some opinions on this header set up for an Allis 226 engine (https://www.keystoneturbo.com/product-page/allis-chalmers-wd-ramhead-header). It looks good and sounds good, but Keystone has not done any dyno testing for horsepower or torque. They are estimating 20 HP gain, I'm not sure if headers alone would gain that much. This should be a video of it set up and running on a WD https://www.facebook.com/100072292363147/videos/pcb.750550677364671/1534044748001184

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DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21978	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 54 minutes ago at 6:43pm
	I had no idea the Keystone Klowns were still peddling their "go faster" tractor parts so that you could be another victim. First of all, an "equal length" exhaust manifold (or header as you call it) is for automotive engines that run waaay faster than 2000 RPM. So,right off the bat, what is the purpose here ?? They claim a 20 HP gain ?? Over what ?? A 35 HP WD engine?? maybe, but not a 55 HP D-17 engine. It's really strange they offer no real proof to back up their wild claim. If you notice, the carburetor on that particular engine is a D-19 sized unit. That carb size is good for 5 to 8 HP on a dyno at 2,000 RPM with a stock manifold and no more than that. If you use your STOCK carb, you will gain NOTHING !! So, what are you trying to accomplish ??? If you are an antique tractor puller, all the clubs I associate with wouldn't allow that manifold because it ain't stock/factory replacement. For $1450 dollars I'd rather install an 8 to 1 compression 4 1/8" motor kit and then you'd have something. Exactly what is the tractor model/engine model?? and what is your goal here ?? Do a real internet search on Keystone turbocharger kits and some of the blown up engines that were the result. This is all my OPINION.