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4020dt
08-30-2005 20:02:17
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Re: 4010 HP POTENTIAL WITH A TURBO? in reply to 4010 Pulling, 08-30-2005 06:36:20
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I have a 1964 4020 , old style (big injectors) like a 4010 . I put a 4440 camshaft in , 4440 intake manifold , M&W turbo kit with a 3LD279 Schwitzer turbo (basically the same turbo as used on an IH 12-1456). Pump is a .370 head from some AC industrial application . Stock lines . stock JD 3 ring pistons and later style harder head bolts . Did this 20 years ago . This combination will put out 200-220hp , seen it at 200 a couple times on a dyno , but don't hold it there TOO LONG . I pulled it 20-25 pulls/yr back then , probably 5-6 pulls nowdays . In that time I took out one headgasket and scored one piston . I put a used sleeve and piston in , have a couple buckets full that I have collected over the years . Your clutch has to be in GOOD shape , the guys used to use 5020 springs with washers behind them . Mine is a powershift and I set the pressure up a few pounds to prevent clutch pack slippage . I pull 120hp 12,000# dyno classes in 2-3 gear and 10-12,000# 3000rpm open hp classes in 4th gear. Last Thurs night at local county fair I got 4th place out of 12 in 12,000-3000rpm class . Hot 966 was 1st , our 4430 2nd , 966 3rd , me 4th , another 4020 set up like mine 5th . There was about 6ft between me and the front . Saturday the boy got 2nd with the 4020 in a 120hp 12,000 class . Rest of the year I run it at 120 , put a couple hundred hrs a year on it mowing , spraying , spreading manure and other odd jobs around here .
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