1993 Fast Strike still not revving all the way

[WVBassman]

I've tried 3 different props in the last few days and none will let my motor reach it's peak rpm's. The 26 Raker, the 23 4 Blade Cabela's, and the 24 Raker all hit 5200 with 57 or 58 mph on the gps. The 26 throws a huge rooster tail and pulls hard to the right. Don't know if I'm expecting too much out of this rig or what. Prop to pad is 3.5". Seriously considering selling the motor or the whole rig..

[JER-1 BIG BASS]

I have a 1999 johnson J225HPLEEN 225 HO
Mine is missing a roller asy and o-ring that advances the timing with the gas ,Have it ordered, I'll only get about 5000 rpms the carb plates won't open all the way up since this piece is missing, maybe something is missing on yours. I don't know champ or whitchdoctor ,or someone will.
BIG BASS

[t-bone]

Are you sure you tach is reading right? At 5200 I don't think think you could be seeing 58 MPH. I can turn a 24 Raker 5800 at about 60 MPH.

[JER-1 BIG BASS]

I'm getting 4900 rpm @54 trimed up with a 10" jackplate, I've still got another 1000 rpms to play with. 4 blade renagade bass prop
BIG BASS

[JR19]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by t-bone &raquo;</td></tr><tr><td class="quote">Are you sure you tach is reading right? </td></tr></table>

I think I would check the tach. I find it odd that a 23, 24 and 26 pitch all turn the same rpm.

[WVBassman]

I would think that the 23 would hit 5800. But all 3 of them hit the same. I got 5300 last week with the 26 Raker, but I lowered the jackplate a 1/4 inch to try to get the hard right pull out of it. Didn't help the pull with the 26, but the 24 4 blade steers better. Not sure what else to do. I think it's going to have a "for sale" sign in it soon.


Modified by WVBassman at 2:53 PM 4/12/2011

[t-bone]

Try to borrow a known good tach from a friend or have a dealer check yours. Your speeds are what I get from similar props, just lower RPM. Did you suddenly lose speed and RPM's. What boat do you have?

[WVBassman]

1993 Javelin 389T. The wife bought me a TH Marine Hi-Jacker jackplate. I put it on, went to the lake and came back unhappy. The first time out, I hit 4500 rpm's with the 24 Raker(my usual prop). I thought I might have an engine issue. Took it to the local OMC shop, he had it over a week, and said that the only thing he found on it was the compression on the port top and middle cylinders was lower than the starboard side. I got home, removed the hydrofoil, raised the motor a little and hit the water. Saw 58 mph (gps) @ 5300 rpm's with the 26 Raker. Steering was aweful and threw a rooster tail 8 feet high. Water pres. was 20 psi WOT. Tried the 26 with the jackplate 1/4 inch lower, 5200-5300 rpm's and 54-57 mph. Steering was still hard. Tried the 23 4 blade next, steering improved, but that's all. Ready to sale or trade...

[mtbdsavage]

I am by no means an expert, but I have always heard Javelin's don't like alot of height on the motor. If you check the setup tips section on this site, you'll see that Javelin's like the engine mounted fairly low on the transom/jack plate. Maybe you're trying to run it too high and the prop can't get a "full bite" so to speak? If you can turn a 26 at 5300 it should turn a 24 about 56-5700 I would think.

[t-bone]

What were your Rpm's and speed before the jackplate?

[PBR]

Not all boats like jack plates I have a 379T and was told not to fool with a jack plate not enough gain for the price. That was from a person that worked on Javelins

[WVBassman]

Back in September I fished a 2 day tournament and the motor was running about 5500 rpm's. Didn't run it hard that weekend though due to the weather being crappy. When I put it in the water after adding the jackplate is when I noticed the difference. Wishing that the wife hadn't wasted the money on the plate now. Could be worse, she could have ordered a hydraulic one instead.. Then I'd really be ticked. I checked out another 389T with the same motor and my motor height is almost identical. The other boat has a lower unit with a nose cone on it. Owner says it'll do 67 gps. I'm not sure I believe it out of this setup..

[JoshKeller]

did you get actual compression numbers? The two lower than the others would concern me.

[Bassmeister]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by JR19 &raquo;</td></tr><tr><td class="quote">

I think I would check the tach. I find it odd that a 23, 24 and 26 pitch all turn the same rpm.</td></tr></table>
Especially a F/S turning a 26 Raker on that hull. Hell, My 225 DI only turns a 26 to 5700!!

[WVBassman]

My best friend owns a Merc shop and had the 26 Raker in storage. Brought it for me to try. I put a brand new tach in this evening. Gonna try it tomorrow to see if there's any change. Not sure whether to drop the plate another 1/4" and try the 4 blade or what. I'm off the next 2 days, may be going to St. Marys to look at a few other boats and maybe start all over again..

[t-bone]

The 24 Raker is the one you want on there for lift and speed. The 23 4 blade may be a little slower but they both should turn close to the same RPM's. Have you posted on the setups board for they're ideas on your setup with the plate on your Javalin.

[JR19]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by t-bone &raquo;</td></tr><tr><td class="quote">The 24 Raker is the one you want on there for lift and speed. </td></tr></table>

I would bet $ that 80% of the Javelin 389's and (Renegade 19's which is the same hull) that came from a dealer with a 150 Johnson or Evinrude was rigged with a 24 Raker...hundreds of those boat/motor/prop combinations still on the water today.

[WVBassman]

I have my original 24 Raker. Need to send it off to be redone. Took it off to try the 26. Put the new tach in last night, but it was too late to hit the water when I got done. Heading to the water in a little while for some more running. We'll see how it does.

[djarrett]

My javelin is the same way and I can't explain it. I have to run the prop at 4" under pad. Any higher and the bow drops and I lose rpm and speed. I currently run a 23 trophy and get 5300 at 56-58 mph gps. I did have to add transom wedges and I picked up several mph. My hull is designed with a lot of negative trim. I installed the wedges upside down to give more postive trim. It literally jumps out of the hole, the bow doesn't even hardly rise at all now, just seems to push the stern up and goes. Before wedges the water spray was coming out beside the driver seat, now its all out the back and the steering feels loose. Still have to use all my trim to get it to where the hull doesn't feel like its stuck to the water. I feel like its all the negative trim angle designed into my hull. I will post some pics of my set up with the wedges if you like. I also have a 5.5" jackplate. I did add hydraulic steering because the wheel torque was rediculous. My boat is actually easy to drive now.

My wife is from Oak Hill WV. Beautiful country up there where her family lives. Ya'll have a very nice state, one of the few places I wouldn't care to move too .

[PBR]

As I said before the Javelins from that era do not benefit from a jack plate . I was told that from a person that was sponsered by them. I just don't see way people even mess with a manual Jack plate If you go with the Hydo Jack palte you get all the benefits of the hole shot and then to raise the motor for top end and handeling.