CamaroMan
Petty Officer 1st Class
- Joined
- Mar 18, 2016
- Messages
- 330
Hi guys - so been having issues with risers running real hot.. after a 2 minute WOT run after warming up both were 190-200 on top.. just too much for my liking.
So I ran some tests today - mine is a direct drive with a velvet, so after my pump I have the velvet inline cooler (stbd side), then after that the fuel cooler (port side) then it goes up to the circulating pump.
I tested a brand new quicksilver pump kit vs the 8 month old knock off chinese impeller and slightly worn housing and got exactly the same results after 3 tests.
At the circ pump i got 3" in a 5 gallon bucket which equates to 1 gallon/ 4 quarts.. then i plumber the raw output straight into a bucket bypassing both inline coolers - and got double the flow, im just ont he minimum of 2.5 gallons in a 15 sec stretch.
I will pull the coolers and disassemble the fuel cooler to see whats inside - i did reverse flush them 2 coolers and didnt notice much of anything except water coming out.
I was following the bravo water test - and ran a hose from pump inlet into a full 5 gallon bucket, ran the motor and waited till the idle settled down, then popped the output hose into an empty 5 gallon bucket and timed exactly 15 seconds.
Is the 50% drop in flow acceptable for inline coolers normal or is something suspicious there?
1997 bayliner tournament ski with a single hose going to bottom of each manifold - t-stat is 160 degree.
Thank
So I ran some tests today - mine is a direct drive with a velvet, so after my pump I have the velvet inline cooler (stbd side), then after that the fuel cooler (port side) then it goes up to the circulating pump.
I tested a brand new quicksilver pump kit vs the 8 month old knock off chinese impeller and slightly worn housing and got exactly the same results after 3 tests.
At the circ pump i got 3" in a 5 gallon bucket which equates to 1 gallon/ 4 quarts.. then i plumber the raw output straight into a bucket bypassing both inline coolers - and got double the flow, im just ont he minimum of 2.5 gallons in a 15 sec stretch.
I will pull the coolers and disassemble the fuel cooler to see whats inside - i did reverse flush them 2 coolers and didnt notice much of anything except water coming out.
I was following the bravo water test - and ran a hose from pump inlet into a full 5 gallon bucket, ran the motor and waited till the idle settled down, then popped the output hose into an empty 5 gallon bucket and timed exactly 15 seconds.
Is the 50% drop in flow acceptable for inline coolers normal or is something suspicious there?
1997 bayliner tournament ski with a single hose going to bottom of each manifold - t-stat is 160 degree.
Thank