oil pressure problems from stock hardware
07-12-2010, 09:15 AM
#141
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So added the oil temp gauge & sender (spare port just in front of adapter on the block) & oil looks in line @ 160~180 degrees 40~45 psi. It takes some time warm up but stays consistent once there. My water temp is 100~110 & 20~ish psi. I'm running no thermostat (per Whipple direction). My thought is the water too cold causing condensation in the valve covers. Should I add some more breather or put a thermostat back in the water? breather on stb side now, pcv on port. I'm scared to add thermostat against Whipple direction, they say steam pockets form & poof goes the head gasket.
Last edited by 90mphRAGE; 07-12-2010 at 09:21 AM.
07-13-2010, 12:41 PM
#144
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I called Merc, they do not have another stat for the stock, so guess I'll be looking into aftermarket, I'd like to just find a pad adapter with one built in like the stock so I don't have to re-pipe everything.
03-09-2011, 07:10 AM
#146
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Ive seen a zillion part #'s flying around for oil filters on this board,I stick with K&N 6002(its extra,extra long),has550psi burst strength,filters down to 10 microns,has anti-drainback valve,built in bypass valve (which with all the surface area should never open),flows 12-14gpm and if you were real anal you could safety wire it,it has provisions.If you don't have room the 3002 fits where any ac-35 style filter will,Smitty
03-09-2011, 12:35 PM
#147
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After reading thru this thread, it has me wondering if I need to upgrade my current Mercruiser oil system...
http://www.mercruiserparts.com/Show_...And+Oil+Filter
I'm getting close to reassembling my motor & with upgrades, I should be in the 600HP range. I will be running the 10778c pump.
Will the existing cooler set-up work with this, or should I look to go aftermarket?
The oil lines are 1/2", & I don't have any restricted fittings. Everything worked fine at the original HP...The temp seemed to be a bit high (240 during a long run), but I figured it was where I'm reading from (in the block). I had planned on welding a bung in the pan & reading from there...
Very good information here...It definitely has me thinking...
http://www.mercruiserparts.com/Show_...And+Oil+Filter
I'm getting close to reassembling my motor & with upgrades, I should be in the 600HP range. I will be running the 10778c pump.
Will the existing cooler set-up work with this, or should I look to go aftermarket?
The oil lines are 1/2", & I don't have any restricted fittings. Everything worked fine at the original HP...The temp seemed to be a bit high (240 during a long run), but I figured it was where I'm reading from (in the block). I had planned on welding a bung in the pan & reading from there...
Very good information here...It definitely has me thinking...
03-10-2011, 04:44 PM
#148
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I'm right in the middle of setting my 253 up and going to redo the factory merc stuff..already have a eddie marine block adapter(canton they told me) so need cooler, filter, oil temp, and lines...damn had all this right on my 251 !!! + going to make sure the 30psi valve is in there...great info here !!!
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