DanielADeYoung
Cadet
- Joined
- Sep 7, 2008
- Messages
- 14
I just had a new 5.7 Vortec engine and a 100% new Alpha 1 Outdrive (1.47 ratio) installed into my 1987 Searay Sundancer 268 (27? cabin cruiser) (deep v-hull)
This was a $9,000 Repowering (now Im broke)
The engine revs to 4800 RPM (WOT) when it is out of the water.
On the water it only revs to 3000 RPM (26knts)... the problem!!!
I have replaced the shifter as well trying to solve this, but it is the same with the new shifter.
The engine shop has no answers to why this is the case.
The current prop is 15.5d x 13p (13p is very low and should be able to reach the 4400-4800 WOT, but it does not)
I do have one specific question about manual secondary?s vs. vacuum secondary?s on the carb.
I have manual?
Should the secondary?s open fully with the engine off and throttle pushed 100% forward? The primaries do...
I have heard yes and I have heard that the secondary?s open at like 3200 RPM
Thanks in advance? I want to enjoy my boat not put more $$$ into it!
Dan
This was a $9,000 Repowering (now Im broke)
The engine revs to 4800 RPM (WOT) when it is out of the water.
On the water it only revs to 3000 RPM (26knts)... the problem!!!
I have replaced the shifter as well trying to solve this, but it is the same with the new shifter.
The engine shop has no answers to why this is the case.
The current prop is 15.5d x 13p (13p is very low and should be able to reach the 4400-4800 WOT, but it does not)
I do have one specific question about manual secondary?s vs. vacuum secondary?s on the carb.
I have manual?
Should the secondary?s open fully with the engine off and throttle pushed 100% forward? The primaries do...
I have heard yes and I have heard that the secondary?s open at like 3200 RPM
Thanks in advance? I want to enjoy my boat not put more $$$ into it!
Dan