franky3
Probationary Member
- 3
- 0
- Apr 30, 2013
-
montreal,
QC_Canada
i need to know if we have something special to do for my 4g63t after rebuilt, please if there is gentle mens !
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Nope just break it in, http://www.dsmtuners.com/forums/fre...should-i-break-my-new-rebuilt-dsm-engine.html
im in the process of breaking mine in now.
I would take it easy for the first 100 miles or so.
I have always been curious about this as well after seeing The Motoman article. Old school guys say baby it 2000 miles. Hardcore new builder say run it hard to seal the rings fast from the beginning.I wouldn't...Unless you're trying to break-in a brand new ring & pinion or gearset at the same time. That's a different ballgame.
Properly seating the rings and valves are crucial. That won't happen properly without RPM and cylinder pressure.
To each his own I suppose...I guess just do what your engine builder tells you to do.
I wouldn't...Unless you're trying to break-in a brand new ring & pinion or gearset at the same time. That's a different ballgame.
Properly seating the rings and valves are crucial. That won't happen properly without RPM and cylinder pressure.
To each his own I suppose...I guess just do what your engine builder tells you to do.
The long accepted method is an easy break in, your owners manual tells you to take it easy for a reason, they want it to last while its under warranty. Every engine that I have seen blown up with low mileage on it was broken in the beat on it method. That mototune guy is an idiot that is a nobody, he is an old man that put top ends in dirt bikes for the neighbor kids, he has zero credentials and the only reason that people want to cite him and his "method" is because your average kid that has a Dsm is lazy and impatient and want anyone at all to tell them that its ok to beat on things right away so that they dont feel wrong about being impatient Engine vacuum or load does not seat piston rings during break in, FRICTION does. The reason that you lose compression after getting an engine hot is from the heat taking the spring tension out of the piston rings, not lack of vacuum . Nothing has changed in materials since the small block Chevy came out, the Dsm engine still uses a cast iron block, aluminum pistons, steel crank, steel rods, and chrome plated rings, same as the 57' Chevy, so anyone referring to the easy break in method as "the old way" guess what? your bottom end is just as old as a small blocks technology wise so stick with what has been proven for decades.