Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: 1998 whaler Outrage 20
Posted by Mdstevenson1978 on 07/14/20 - 7:12 PM
#1
Recently bought a 1998 whaler outrage 20 with a 1998 mercury 2 stroke 175. Does anyone know what prop size should be for this ? Any help appreciated
Posted by biggiefl on 07/15/20 - 7:14 AM
#2
What is on it now and what rpms are you seeing at wide open, fully trimmed? What is redline?
Posted by Mdstevenson1978 on 07/15/20 - 10:15 AM
#3
Has a 3 blade 23p. Stainless Redlines 5200-5600
Posted by Mdstevenson1978 on 07/15/20 - 11:00 AM
#4
Trimmed all the way down
Posted by Phil T on 07/15/20 - 12:46 PM
#5
What is the engine's mounting height?
Counting down from the top, in which hole is the top bolt?
Posted by Mdstevenson1978 on 07/15/20 - 5:11 PM
#6
Second from the top
Posted by Mdstevenson1978 on 07/15/20 - 5:14 PM
#7
I post a pic but no clue how to
Posted by Mdstevenson1978 on 07/15/20 - 5:54 PM
#9
I suppose don’t honestly know much about how it should be mounted or what prop to run
Posted by biggiefl on 07/15/20 - 9:55 PM
#10
23p is way too much. You did not answer my question however...what rpm are you running WOT throttle? Redline is 5600. You state all the way trimmed down...why? You need to trim all the way up unitl it slips, then tap it down until it grabs. I'm thinking around a 17" pitch. A 23 would be a major dog out of the hole and redline in the 4k range.
Posted by Mdstevenson1978 on 07/16/20 - 3:51 AM
#11
I’m going to take the boat out this weekend and pay alittle more attention . Wouldn’t a 17p kill the top end ? I think running with wot with it bumped up 3 times it’s at 5200 but I’ll make sure this weekend
Posted by biggiefl on 07/16/20 - 7:06 AM
#12
Trim it up until it slips, then bump it down until it grabs.
Posted by Phil T on 07/16/20 - 7:45 AM
#13
As Biggle says.
Accelerate to a certain rpm, say 4500.
Trim out and watch the rpm's rise without you changing the throttle.
Note the speed on the GPS display increase.
Note the bow will lower.
As you continue to trim out, the speed will stop increasing. At the point it does, bump the trim inward a few times and there you are.
Accelerate till throttle is at the stops. What is WOT rpm and GPS speed?
Edited by Phil T on 07/16/20 - 7:46 AM