os .90 marine engine cooling questions
08-28-2014, 10:42 PM
#1
Junior Member
Thread Starter
Join Date: Aug 2014
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
os .90 marine engine cooling questions
So i picked up a pristine prather piranha with an os .90 marine engine. I saw this as a huge score , and am readying it for the lake house this weekend. My question about the motor is, the 90 has a double cooling jacket. I dont feel the flow from the rudder pick up is enough water volume for this engine. I am adding a second water pick up and this one is a larger diameter. Should i feed the head or the sleeve/casing jacket the higher volume water line?
08-30-2014, 06:21 PM
#2
You'll find out soon enough why you scored the OS .90 so cheap as you're going to spend a lot of money on fuel! The good thing is that they run well on low percentage nitro, 40% max.
Where to add the 2nd line hook-up is a good question. Myself, I'd run it to the sleeve but you may prefer it the other way around.
Where to add the 2nd line hook-up is a good question. Myself, I'd run it to the sleeve but you may prefer it the other way around.
09-02-2014, 12:48 PM
#4
Maybe, maybe not. Overcooling can adversely affect how the motor runs as much as overheating can. You might want to consider putting the larger line on the exhaust instead
