Water / Meth. Injection
03-09-2015 | 09:40 AM
#42
Registered
Joined: Jan 2006
Posts: 688
Likes: 0
From: wisconsin
Oh it was yours. Thanks Dan for posting dyno sheet. Did you leave the AFR's like that while in the boat? I run mine the same as you have ( 11.4 to 11.8), I think that Mike & Joe like AFR's a little fatter.
03-09-2015 | 11:14 AM
#43
Registered
Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
i like them a little richer on the higher hp engines running more boost,the closer you get to the ragged edge the more it can use the xtra cooling.i have innercoolers but i am thinking about adding a water/meth system.
03-09-2015 | 11:28 AM
#44
Registered
Joined: Apr 2006
Posts: 10,042
Likes: 712
From: Toledo Oh
ok..school me guys.... I get how water/meth works and why. My confusion comes from application. We are dealing with endurance motors in hostile environments. it can save a motor running on the edge but why would you want to run an offshore motor that far on the edge?? In a failure laden environment why would you want to add complexity with a pretty much assured catastrophic engine failure is something were to go wrong with the added complexity? We arent drag racing or blasting corner to corner, we are aiming for the horizon miles away. What am I missing?
03-09-2015 | 11:38 AM
#45
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
Normal cruise I'm around 12.0-12.4. I'm sure I could lean it back out, but I see no reason to. Slower speed and more chance of hurting something. Transom is always clean. That couple extra jet sizes isn't gonna wash the rings out of it at 5800rpm either.
You should try a little more timing in your engines with a little more fuel this summer . if I remember you only running 28* total? It might pick up a little. I noticed with less timing and less fuel, was a slower boat.
Last edited by MILD THUNDER; 03-09-2015 at 11:43 AM.
03-09-2015 | 11:56 AM
#46
Registered
Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
ok..school me guys.... I get how water/meth works and why. My confusion comes from application. We are dealing with endurance motors in hostile environments. it can save a motor running on the edge but why would you want to run an offshore motor that far on the edge?? In a failure laden environment why would you want to add complexity with a pretty much assured catastrophic engine failure is something were to go wrong with the added complexity? We arent drag racing or blasting corner to corner, we are aiming for the horizon miles away. What am I missing?
03-09-2015 | 12:00 PM
#47
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
ok..school me guys.... I get how water/meth works and why. My confusion comes from application. We are dealing with endurance motors in hostile environments. it can save a motor running on the edge but why would you want to run an offshore motor that far on the edge?? In a failure laden environment why would you want to add complexity with a pretty much assured catastrophic engine failure is something were to go wrong with the added complexity? We arent drag racing or blasting corner to corner, we are aiming for the horizon miles away. What am I missing?
03-09-2015 | 12:24 PM
#48
Registered
Joined: Nov 2005
Posts: 2,399
Likes: 15
From: Toronto, Canada
I've ran everything from 11.2 to 12.5 at wot. Boat ran its best speed at 11.2. At 12.5 I cracked the porcelain on the plug.
Normal cruise I'm around 12.0-12.4. I'm sure I could lean it back out, but I see no reason to. Slower speed and more chance of hurting something. Transom is always clean. That couple extra jet sizes isn't gonna wash the rings out of it at 5800rpm either.
You should try a little more timing in your engines with a little more fuel this summer . if I remember you only running 28* total? It might pick up a little. I noticed with less timing and less fuel, was a slower boat.
Normal cruise I'm around 12.0-12.4. I'm sure I could lean it back out, but I see no reason to. Slower speed and more chance of hurting something. Transom is always clean. That couple extra jet sizes isn't gonna wash the rings out of it at 5800rpm either.
You should try a little more timing in your engines with a little more fuel this summer . if I remember you only running 28* total? It might pick up a little. I noticed with less timing and less fuel, was a slower boat.
03-09-2015 | 12:28 PM
#49
Registered
Joined: Nov 2005
Posts: 2,399
Likes: 15
From: Toronto, Canada
ok..school me guys.... I get how water/meth works and why. My confusion comes from application. We are dealing with endurance motors in hostile environments. it can save a motor running on the edge but why would you want to run an offshore motor that far on the edge?? In a failure laden environment why would you want to add complexity with a pretty much assured catastrophic engine failure is something were to go wrong with the added complexity? We arent drag racing or blasting corner to corner, we are aiming for the horizon miles away. What am I missing?
03-09-2015 | 05:03 PM
#50
Registered
Joined: Jun 2009
Posts: 9,973
Likes: 6,467
From: Chicago
Theres 2 ways to do it, run meth (it`s like raising the octane to 116) and turn up boost accordingly or don`t do anything just run water to bring the intake temps way down and run it like extra insurance.
For me I`d need 4 nozzles per motor , have it come in @ 4-5 psi.
That could be quite a bit of meth thats why i was thinking of running straight lake water and never run out.
For me I`d need 4 nozzles per motor , have it come in @ 4-5 psi.
That could be quite a bit of meth thats why i was thinking of running straight lake water and never run out.
