big roost, how to

[4604me]

awhile back I read a post about cutting a placediverter on a jc pump to make a bigger roostertail. I did a search but couldn't find it. can anyone give me some insite to this. like do's and dont's, how much to cut, pic's, ect ect thanks Steve.

[OverKill]

Do you have a split bowl?? I ask this because if you do, you can add a droop with some wedging with a hydraulic diverter to get a bigger Roost. Tell me what your setup is and I can help you.

[4604me]

that's the thing it's a JC no split bowl, I did see a pic,where someone did cut or used a grinder on the .top part of the placediverter but cant find that pic anywhere.

[Jetaholic]

that's the thing it's a JC no split bowl, I did see a pic,where someone did cut or used a grinder on the .top part of the placediverter but cant find that pic anywhere.
You grind metal off of the steering bracket where the diverter bracket contacts it so that the diverter bracket can travel towards it more.
But be careful...if you take out too much you'll blow out nozzle rings left and right.
Here's a pic of mine. You can see where the steering bracket (the one on the far right of the pic) has been cut on the backside to allow more up travel of the diverter.
http://www.***boat.com/forums/attachment.php?attachmentid=24647&stc=1&d=1172123275

[OverKill]

that's the thing it's a JC no split bowl, I did see a pic,where someone did cut or used a grinder on the .top part of the placediverter but cant find that pic anywhere.
Sure you can do it like Jetoholic did, How ever if it were up to me I would go about it two other ways. First I would consider putting on a new split bowl. If that was'nt going to work for me I would take the bowl I had and ask an experienced boat shop to cut the bowl putting in the eight taps and call it a split bowl. I would'nt cut into the Place Diverter do to the fact it is designed the way it is for a reason. Besides the fact if you decide to make your bowl a split, you can do so many more things later down the road ( Droop, wedge, and ride plate). Give it some thought before you start hacking.

[Devilman]

awhile back I read a post about cutting a placediverter on a jc pump to make a bigger roostertail. I did a search but couldn't find it. can anyone give me some insite to this. like do's and dont's, how much to cut, pic's, ect ect thanks Steve.
It may have been mine, I had posted some pics of it awhile back. :cool:
First off, I didn't do the grinding, one of the previous owners did it. Also, as it was mentioned, if you grind too much, that nozzle O-ring will be blowing out of there constantly. Mine is borderline. :sqeyes:
These two pics show the area that has been ground away....
http://www.***boat.com/image_center/data/500/nozzle2.jpg
http://www.***boat.com/image_center/data/500/nozzle1.jpg
I don't think the steering bracket has been ground, I honestly never paid attention to it. I will now though. :D
These two pics show how much more up-angle the nozzle has, the diverter was one notch from the top in these pics, it won't stay in the top position on its own. :rolleyes: However, you can also see how much of a bind it puts on the reverse cable with it tilted up that far...:jawdrop:
http://www.***boat.com/image_center/data/500/diverterup2.jpg
http://www.***boat.com/image_center/data/500/diverterup3.jpg

[Devilman]

Sure you can do it like Jetoholic did, How ever if it were up to me I would go about it two other ways. First I would consider putting on a new split bowl. If that was'nt going to work for me I would take the bowl I had and ask an experienced boat shop to cut the bowl putting in the eight taps and call it a split bowl. I would'nt cut into the Place Diverter do to the fact it is designed the way it is for a reason. Besides the fact if you decide to make your bowl a split, you can do so many more things later down the road ( Droop, wedge, and ride plate). Give it some thought before you start hacking.
I also agree with this, if mine wasn't ground already, I'm not sure if I would have done it or not. Sure would hate to think of messing around with a perfectly good diverter & then ruin it with an experiment, LOL...
The thing is, there is a groove in there, where that teflon O-ring sits. I would bet, that most people's first thought is, "As long as I don't grind into that groove, I'm okay." That's not entirely true. By grinding away the top, you allow the nozzle to travel farther than it was meant to, which is fine for a tall rooster, but in doing that, you jeopardize the sealing surface on the bottom side of the nozzle, leaving it vulnerable to blowing out the O-ring from underneath. Something to think about..... :cool:

[Wet Dream]

Look at the horrible kink in the red cable (reverse bucket). How tight is that to operate?

[Devilman]

Look at the horrible kink in the red cable (reverse bucket). How tight is that to operate?
LOL, the reverse bucket functions smoothly, with the diverter in a normal position anyway. Never tried using reverse with the nozzle up. :D I had to replace that cable last August & I'm positive that bad kink was the culprit.
Also, I been looking at some other pictures & I'm not sure what its called, (tiller arm maybe?) looks like its had a big chunk of it cut off. The piece that the steering cable connects to is what I'm talking about. Man, somebody butchered that thing pretty bad...:eek:

[IMPATIENT 1]

take off the nozzle when ya attempt this mod, don't even try it with it still on the divertor. go to the center area and mark off a 1/4 inch in the center,from the edge. let that be your reference for grinding, don't grind any further than the mark and it'll be ok.

[3 daytona`s]

[QUOTE=Devilman;2404869]It may have been mine, I had posted some pics of it awhile back. :cool:
First off, I didn't do the grinding, one of the previous owners did it. Also, as it was mentioned, if you grind too much, that nozzle O-ring will be blowing out of there constantly. Mine is borderline. :sqeyes:
These two pics show the area that has been ground away....
http://www.***boat.com/image_center/data/500/nozzle2.jpg
http://www.***boat.com/image_center/data/500/nozzle1.jpg
I don't think the steering bracket has been ground, I honestly never paid attention to it. I will now though. :D
These two pics show how much more up-angle the nozzle has, the diverter was one notch from the top in these pics, it won't stay in the top position on its own. :rolleyes: However, you can also see how much of a bind it puts on the reverse cable with it tilted up that far...:jawdrop:
http://www.***boat.com/image_center/data/500/diverterup2.jpg
http://www.***boat.com/image_center/data/500/diverterup3.jpg[/QUOTE We`ll wait and see how long for the world that cable is NASTY:rolleyes:

[4604me]

devilman those are the pic's I saw. who ever did it took alittle more than a 1/4 inch off as per (Impatient 1), maybe to much if you can't use your top notch. that cable looks bad for sure, If you shorten the cable into the transom housing the kink wouldn't be so bad. I may have to try this alittle at a time, becouse the end results looks cool. Thanks for the pic's and input, Steve

[Devilman]

devilman those are the pic's I saw. who ever did it took alittle more than a 1/4 inch off as per (Impatient 1), maybe to much if you can't use your top notch. that cable looks bad for sure, If you shorten the cable into the transom housing the kink wouldn't be so bad. I may have to try this alittle at a time, becouse the end results looks cool. Thanks for the pic's and input, Steve
Yeah, thats an old pic, I have since ran the cable farther back into the boat, that helped a bunch. The cable lasted for about the first year & a half I had the boat before the casing finally gave out while on an out of town lake trip. :jawdrop: Nothing a section of garden hose & two hose clamps couldn't handle. Shit, ugly as it was with that rigged cable patch, I ended up running it like that the rest of the summer, LOL....:D Even though I finally did replace the cable, I still keep that piece of garden hose & clamps in the tool bag, just in case.....:D No problem with the pics, let us know how it turns out!

[IMPATIENT 1]

devilman those are the pic's I saw. who ever did it took alittle more than a 1/4 inch off as per (Impatient 1), maybe to much if you can't use your top notch. that cable looks bad for sure, If you shorten the cable into the transom housing the kink wouldn't be so bad. I may have to try this alittle at a time, becouse the end results looks cool. Thanks for the pic's and input, Steve
the 1/4 inch will give you an extra notch up on the divertor,just gotta adjust your cable. i had the the whole divertor in hand for hrs. before i decided where it was safe to cut at.i decided on the 1/4inch because it left some room for error and gave the nozzle seal plenty of sealing surface with no chance of blowing out due to the mod.

[4604me]

Impatient 1, thanks for the info, how was the roost after the mod. also is that 1/4 " cut all the way across, or tapered from the middle. I guess I could figure that out by looking at mine. unfortunately I will probably hold mine for hrs to, before cutting. thanks again, Steve.

[kcsteck]

I did mine just like the pics and ground into the bracket as well. Diverter went up tmor clicks then it used to before the mod . Makes huge!!! rooster. Never blown no seals. Used all last summer. Maybe 10 trips.even did it on the boat with die grinder. Just got to be careful!
Casey

[IMPATIENT 1]

Impatient 1, thanks for the info, how was the roost after the mod. also is that 1/4 " cut all the way across, or tapered from the middle. I guess I could figure that out by looking at mine. unfortunately I will probably hold mine for hrs to, before cutting. thanks again, Steve.
thank the devilman, he turned me onto the mod too;) i just spent alot of time lookin at his pics and i remember how nervous i was grinding on my brand new place divertor:jawdrop:i've done all my buddy's nozzles, a few jet-o-vators, and even a bushwacker since i learned the trick.it works if you pay attention to how fast your cutting and how much your removing.
after i learned how to clean up the nozzle area by trimming down the pins/bushings so they didn't interfere, the roost would get out there a ways.if you have ever seen taylorman's old sig pic of his sj's roost, mine was about the same. the extra notch up this mod gives ya raised my roost up about 5-6ft at the high peak, but i gained alot of distance too.
yeah, taper in the cut, not just 1/4 all the way.start in the mid and grind in almost a 1/4 inch, then start working outwards.you'll have to do some fine tuning of it to the nozzle, but if you stay within the safety zone, you'll be ok.just take out material in small increments,test fit, grind alittle, test fit.its really not that hard to do, i can do it:D i even keep the nozzle offa the sj cause i liked it so much, swapped it out for the tx-19's before i sold the sj.

[IMPATIENT 1]

i looked for a roost pic of my boat to email but i don't have any:mad: i did find some pics of my divertor on the sj, pm me your email address, and i'll send them to ya.they're close up so you can see how to taper the cutting.

[minnesota_duane]

I cut my jet o vator and this is all I got. I just need more power!
http://www.hotboatpics.com/pics/data/500/10564MVC-007S.JPG

[IMPATIENT 1]

I cut my jet o vator and this is all I got. I just need more power!
http://www.hotboatpics.com/pics/data/500/10564MVC-007S.JPG
mine would get @15ft higher than that, with a 1 piece bowl. i had alot of power though:D

[minnesota_duane]

Mine just had a tired old 460 stock as it gets. It is getting a 429 with ported C8 heads and a Erson jet boat cam with a tunnel ram and a pair of 750s. The roost should be bigger and it should run alot harder. I hope!

[sidewound]

This is my boat with a JC pump. I rebuilt it with an ultimate wear ring and a standard aluminum
A impeller that Duane just smoothed and indexed for me.
It's a standard agressor hydraulic diverter with no mods.
The mill is a very mild warm up on a 455. My guess is it's well under 400 hp.
I think a lot of it depends on the hull and pump condition.
http://www.hotboatpics.com/pics/data/500/3371Web_P1010370.jpg
This is a wacky pic but it's my boat. Full throttle diverter flat.....
Shut it down diverter up drop the hammer and this is what I get.
http://www.hotboatpics.com/pics/data/500/33713371Eve__ROOOOOOOOOOOO__2_.jpg
Peace Man!:cool:
CESAR

[dirtman]

With a wedge and hyd. place diverter, with a 350 sbc this is what I got. Gets the bottom lots wetter and slows me down but it's kinda cool I guess.
http://www.youtube.com/watch?v=DAopPe-Pipg

[Muldoon]

Bone stock '78 Bahner
http://www.youtube.com/watch?v=5td_tCobhvw

[pw_Tony]

Mine just had a tired old 460 stock as it gets. It is getting a 429 with ported C8 heads and a Erson jet boat cam with a tunnel ram and a pair of 750s. The roost should be bigger and it should run alot harder. I hope!
I thought you were doing the blower set-up Duane?

[minnesota_duane]

I have two boats, a '77 Hawaiian and an '87 Baker tunnel.