Quote:
Originally Posted by 36tbird
Merc Cruzer, I don't mean to beat a dead horse, but I just want to clarify. You had the plug installed as per the 95% modification but you did not have the filter plumbed in? Or, did you have the filter plumbed in stock wise, returning the oil to the pan? Maybe this was covered, but with 7 pages of posts and my having the attention span of a parakeet, I missed it.
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Hi "36", just to clear it all up, you must remove the "plug" IF you do not have a filter in the system. The plug, when it is in place, stops the oil from reaching the main galley and the rear main gets oil only!
When you use a filter in the line you need to have the plug in position in order to direct the oil to the filter on one side, in other words, the oil pressure "hits" the plug is "forced" to pass through the filter, after the oil passes through the filter it returns to the opposite side of the plug and continues on to the main passageways!
I've only done the modification to 2 blocks as of today, one is still be built and the other has been in the Merc for a few months now! Works flawlessly so far!
(Add) You must maintain the integrity of the oiling system by keeping all the passageways equal in size, not good to "step" down any orifices!!
Thanks, Gary in N.Y.
P.S. The one that has been running with this modification, runs with 35# pressure hot, idling, and 55#/60# hot "cruising"! This is with the standard "M-19" pump, no mod's to the pump, also with .003" clearance on the mains and .002" on the rods! This is a 4.250" Eagle crank/Scat rod, 292" stroker! Also has NO temp issues!