shores
07-12-2016, 09:02 AM
Just picked up a 24 jaws with a 04 250 merc efi. 23 mirage.
Starts idles nicely I guess. Been awhile since I've had a big 2-stroke. I've had some 225 dfi's in the past. 1 single 20' CC 200dfi. 3 different twin 225 26' CC's.
In and out of gear nicely. on the initial push on the throttle it picks up nicely from idle to about 1200rpms and then gets "flat" feeling. It's revving up but enough lag ot make you notice it. Continue pushing to WO and it just feels about the same, then at just over 2k rpms it gets up and goes. This takes a few seconds. After 2k rpms or so, it's gone. Runs out in the 5k range, didn't get a chance to air/trim it out in the water I was in at the time. I do not know the boat and there was traffic in the intercoastal. She ran 46mph at about 4k. I saw the past high # on the Garmin and it was 62.2. That seems a bit far fetched as I have read they run 58 with a 23 mirage.
Now, I only spent an hour driving it so my trimming and playing around time is very limited. Several idle to plane runs and every time I went to plane, that same 1200-2k rpm lull was there. I fed it slowly, same result. Threw the stick right down, same result. Run it down to 3k rpms while running and hit it, took off. I did not get to play with trim tabs when planing off. I did have the engine mostly tucked.
I want to say something is not right on the low end over 1200 but it's so consistent, it makes me wonder if this is just the nature of this engine/prop on this size boat coming out of the hole.
Thx for any help. :thumbsup:
Starts idles nicely I guess. Been awhile since I've had a big 2-stroke. I've had some 225 dfi's in the past. 1 single 20' CC 200dfi. 3 different twin 225 26' CC's.
In and out of gear nicely. on the initial push on the throttle it picks up nicely from idle to about 1200rpms and then gets "flat" feeling. It's revving up but enough lag ot make you notice it. Continue pushing to WO and it just feels about the same, then at just over 2k rpms it gets up and goes. This takes a few seconds. After 2k rpms or so, it's gone. Runs out in the 5k range, didn't get a chance to air/trim it out in the water I was in at the time. I do not know the boat and there was traffic in the intercoastal. She ran 46mph at about 4k. I saw the past high # on the Garmin and it was 62.2. That seems a bit far fetched as I have read they run 58 with a 23 mirage.
Now, I only spent an hour driving it so my trimming and playing around time is very limited. Several idle to plane runs and every time I went to plane, that same 1200-2k rpm lull was there. I fed it slowly, same result. Threw the stick right down, same result. Run it down to 3k rpms while running and hit it, took off. I did not get to play with trim tabs when planing off. I did have the engine mostly tucked.
I want to say something is not right on the low end over 1200 but it's so consistent, it makes me wonder if this is just the nature of this engine/prop on this size boat coming out of the hole.
Thx for any help. :thumbsup: