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lyle
02-20-2002, 04:51 AM
run land and sea heads and over heats at higher speed

snappertapper
02-20-2002, 07:14 AM
take out your thermostats

HavasuDreamin'
02-20-2002, 07:19 AM
I agree with SnapperTapper. Take out your thermostats and replace with a stainless steel washer. I did this on my Mercury and it runs cool. It will be a trial and error process to find the washer with the right inside diameter that will allow you to run cool but maintain pressure, but this works. http://free.***boat.net/ubb/cool.gif

lyle
02-20-2002, 08:36 AM
land and sea heads have no thermosat i dont know if i need a presure valve to retain water in the block the motor turns a 32 re mazco 7600 rpm

HavasuDreamin'
02-20-2002, 08:39 AM
What kind of water pressure are you getting at WOT?

lyle
02-20-2002, 08:45 AM
i dont run a presure gauge egt is at 1250temp get up to 180 before i trim it down with the jack plate but i never lose water flow

HavasuDreamin'
02-20-2002, 08:52 AM
You know your rig better than me, but I have always been told to run a pressure gauge and to run a minimum of 10lbs. Most of the time I try to run 12 to 15 lbs. Perhaps your engine is getting warm because you are not getting enough pressure? Just because you have good flow does not necessarily mean good pressure. If you are only running 5 or 6 lbs. or less, this is why your motor is getting hot. What type of boat do you have? How high is you motor set up in relation to the bottom of the hull? http://free.***boat.net/ubb/cool.gif

lyle
02-20-2002, 09:05 AM
19' action marine propshaft is about 2" below the bottom

snappertapper
02-20-2002, 10:00 AM
you should run omc heads without thermostat this will illiminate any cooling problems

snappertapper
02-20-2002, 10:02 AM
i would run omc mod heads with thermostat housing only no htermostat

HavasuDreamin'
02-20-2002, 11:23 AM
Two inches below the bottom . . . you should be getting great water pressure. Not sure what the problem is. I am with snapper, I would most likely shave the stock OMC heads and put them back on. This way you have good compression and good water pressure. Just make sure you have them shaved by a very reputable machine shop. Nothing worse than having to go out an buy new ones because someone didn't do a good job. BTW, you should be able to run your motor even with the pad or at worst 1/2 inch below the pad. Good Luck
[This message has been edited by HavasuDreamin' (edited February 20, 2002).]

drewvir
02-21-2002, 05:50 PM
do you have a nosecone w/lwp?you need to get a waterpressure gauge.also what engine are you running?