Luke Sutter Posted February 17, 2018 Report Share Posted February 17, 2018 I recently purchased a Pathfinder 2400TRS with a Yamaha F-300. My question is at WOT trimmed the engine will not go above ~5500 rom’s. Is this normal? My old F-200 would rev up to ~6200 WOT. I also expected the boat to go faster than 55 with no t-top.... Link to comment Share on other sites More sharing options...
Moderator Posted February 17, 2018 Report Share Posted February 17, 2018 What prop do you have on the boat ? Plenty of 2400's on here with the 300 to help you dial in.. M-1 Link to comment Share on other sites More sharing options...
JEM Posted February 17, 2018 Report Share Posted February 17, 2018 First, you need to tell us what prop you are turning. I suspect a 4 blade? Dealers seem to be partial to over propping this boat/motor combo. That engine needs to turn up closer to 6000 with a normal load........at least 5800. I foresee a prop change in your future! Link to comment Share on other sites More sharing options...
Luke Sutter Posted February 18, 2018 Author Report Share Posted February 18, 2018 It has a Saltwater Series II, 21-T 15 I also determined the old owner rarely went over 4000 rpm’s on the diagnostic report. Link to comment Share on other sites More sharing options...
fishmanjj Posted February 18, 2018 Report Share Posted February 18, 2018 I ran a F250 with a PowerTech OFX4-21 on my 2400v Pathfinder and could get 5900 rpm at 55 mph....no jackplate. If you do not have a jackplate...you may want to check on the hole location that the motor is mounted on the transom, if it's too low...you will never get the higher rpm's out of that motor. Link to comment Share on other sites More sharing options...
Luke Sutter Posted February 19, 2018 Author Report Share Posted February 19, 2018 So all ears regarding which prop I should try using...? I also do have a jack plate. I also noticed the previous owner never ran the engine. Would it help if I opened it up WOT for an extended period of time? Link to comment Share on other sites More sharing options...
northernsnooker Posted February 19, 2018 Report Share Posted February 19, 2018 Can’t help with prop selection. But, yes it’s good to run it at 5800+ for a bit. Some of the F300s are known to make oil. Many think it’s related to not getting enough rpms during break in. There are plenty of 2400 owners so I’m sure you’ll get some prop advice. But you definitely want to be able to top out at 5800-6000 rpm. Link to comment Share on other sites More sharing options...
Moderator Posted February 19, 2018 Report Share Posted February 19, 2018 Running it hard won't loosen the motor up after 238 hours. Assuming that the engine is running efficiently, and you are setting the jackplate & trim correctly, your next step may be to try a new prop. If you fish in shallow water, a 4 blade likes the higher jackplate settings. If you fish deeper water, the SWS-II has big blades to move more water. You can also have your prop tuned to allow 500 more RPM. Seek out a quality prop shop to repitch your wheel so it spins up to 6K RPM. If you have the SDS, shift damper prop, tell the prop shop to ensure they can work it. Look in the Pathfinder Section. In there, there is a subtopic for 'Prop Discussions'. I see two threads about 2400/F300 props. Depending how you fish, and how much time you spend above 5000 RPM will determine what props will serve you best. This is one of the threads: PF 2400 Prop Thread Please report back on your results. Mod-1 Link to comment Share on other sites More sharing options...
Luke Sutter Posted February 20, 2018 Author Report Share Posted February 20, 2018 Mod-1, This is great information. So when you mention getting more spin from my wheel (etc. 500 more rpm’s) propeller shops offer these services? Thanks again! Link to comment Share on other sites More sharing options...
JEM Posted February 20, 2018 Report Share Posted February 20, 2018 I don't think I would recommend trying to grab an extra 500 rpms by having a prop "worked." I suspect the most you can go for with a shop is maybe a couple of hundred rpms. You are looking for a different prop when you are trying to gain an extra 500 turns. Link to comment Share on other sites More sharing options...
Luke Sutter Posted February 21, 2018 Author Report Share Posted February 21, 2018 I’m really wondering how much a difference a different prop would help such as the one shown below on Pathfinder’s Spec sheet vs my current Saltwater Series II 21-15? Or would just an overall manual adjustment by a mechanic just work to that extra meat on the table? I mean, 300-500 more rpm’s and another 5 mph is a lot! Especially since I’ll be adding weight with a half tower. Link to comment Share on other sites More sharing options...
Luke Sutter Posted February 21, 2018 Author Report Share Posted February 21, 2018 Seems like no easy solution... Link to comment Share on other sites More sharing options...
Moderator Posted February 21, 2018 Report Share Posted February 21, 2018 Well, If you are adding a half tower you will need a new prop.. JEM is right. Dial it in and sell the 21P. I would look at the other 2400 prop threads to see what the tower boats are running. You can always PM Funky Monkey. He can prop you correctly. M-1 Link to comment Share on other sites More sharing options...
Robert3 Posted February 22, 2018 Report Share Posted February 22, 2018 I went from a 21p to a 20p and didn't gain 500 rpm, this is what I got from Powertech.. Link to comment Share on other sites More sharing options...
JEM Posted February 22, 2018 Report Share Posted February 22, 2018 The old general rule of thumb is 200 rpm’s for every inch of pitch is still probably pretty close. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.