At what point is a girdle needed on an IH 400 series engine? September 08, 2010 01:55AM
How far can you push a 400 series IH before a girdle is needed. Who makes a good girdle? Any used ones for slae out there?

Re: At what point is a girdle needed on an IH 400 series engine? September 08, 2010 02:12PM
when the guts are trying to fall out the bottom end, you should have put a girdle on it. lol! probably anytime you run ulimited rpms or starting around 600+ hp would be about time for one.

Re: At what point is a girdle needed on an IH 400 series engine? September 10, 2010 02:35AM
466 open rpm around 1200hp, same bearings for 4 years, stock oil system.. no girdle..no problems.. yetCool

Re: At what point is a girdle needed on an IH 400 series engine? September 10, 2010 04:39AM
Are you using H bearings? How many RPMS?

Re: At what point is a girdle needed on an IH 400 series engine? September 10, 2010 02:33PM
by H you mean the ones with lead in them?.. been so long ago... they came from hypermax

4-4500rpms

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