Re: Oil temp 300 degrees
 

I just noticed that you have an early gen 5. Many of those have the wrong bypass.

Re: Oil temp 300 degrees
 

I have a 93 gen v that was giving me the same problem
I was ready to buy a new oil cooler when a local marine engine builder told me not too I went and bought a remote oil filter mount w/thermostat
that is actually for a 540 Bulldog eng and a new block mount from Cp Performance then plumbed it up wiyh 3/4" fitting and #12 hose
as per his instructions
When you look at your remote filter mount you will see that it has very small ports in it less than 3/8 this creates restriction and gives you higher temps
I can look thru my receipts for the part numbers if you like
I now hold it to the stops for 10 min and it doesnt go over 240

Re: Oil temp 300 degrees
 

here's a couple threads. Good reading http://www.offshoreonly.com/forums/s...hp?t=106633&hi http://www.offshoreonly.com/forums/s...t=oil+bypassng.

Re: Oil temp 300 degrees
 

Good tips there Patriyacht
can I change the pressure relief valve while it is in the boat or do I have to pull the engine to do it my oil pressure does still drop even though my temp isnt getting as high
Darryl

Re: Oil temp 300 degrees
 

By the sound of it, the bypass might be the problem. Because I did all the rest of the things suggested such as changing to larger oil line and fittings. I just hope I have no problems installing the new spring. :eek:

PS....Patriyacht, thanks for that photo :drink: