taking off r&d reed block and proks,goin stock

[donkey]

i have a 98 xpl,
it has some jetting issues,which i believe are mostly due to aftermarket r&d reed block and aftermarket filters.
so i want to put factory reed blocks and the factory air box back on.and put the original size factory jets back in the carbs.anybody want to trade?factory parts for my not factory stuff?

 

[Jetskigoodies]

Where is Matt braley on this one.

 

[Matt Braley]

I don't have the 951 stuff

 

[SabrToothSqrl]

I had issues w/a used ski as well, much much time and money later, returning everything too 100% stock was the ticket. Now it runs like a champ.

I should have a 951 air box in my basement, I will look tonight or fri night for you.

Check your jetting too!

 

[Spimothy Leary]

I had issues w/a used ski as well, much much time and money later, returning everything too 100% stock was the ticket. Now it runs like a champ.

I should have a 951 air box in my basement, I will look tonight or fri night for you.

Check your jetting too!

i might have a set of airbox parts as well, actually, i know i have a complete set but the 'plan' was to put it on my RX build, however, proks has been a consideration... the actual airbox is the easy part, but you need the 4 plastic baffles, and the little brackets, the flaps, and the diaper, so you actually need 4 different things for a 951 setup... the 'set' i put together was through two different sellers to get everything I needed.

(nick was the savior for me, finding the diaper and one missing baffle piece)

 

[Minnetonka4me]

Lol no prob Tim...

I will trade OEM for the aftermarket parts.

 

[donkey]

thanks every one.nick to the rescue AGAIN!
ill send a pm soon nick,,i have a air box,not sure if its correct or not,or complete.

 

[Spimothy Leary]

nick can point you out... i had the same situation, had the box, but i was missing a lot of the misc parts...

he helped fill in the blanks for me. basically you need all of this, two brackets, plus the diaper.

 

[donkey]

the box i have is the same as in the picture tim posted.,i need all the other pieces in his picture.plus the reed assemblies,of course.
uhhh,what the hell is the "diaper" for?i think i read that its for a possible leak,but where does it go?
tim ,could you post a picture of yours please?
btw,one of the problems im hoping to solve is a run away,when started out of the water.( vac leak,or wrong jetting,right?)

 

[Seadoobuddy]

Picture of the diaper......well it depends......

 

[CReynoldsMIZ]

Picture of the diaper......well it depends......

Clever wordplay...

 

[skewba98z28]

^^^haha^^^

 

[Spimothy Leary]

the box i have is the same as in the picture tim posted.,i need all the other pieces in his picture.plus the reed assemblies,of course.
uhhh,what the hell is the "diaper" for?i think i read that its for a possible leak,but where does it go?
tim ,could you post a picture of yours please?
btw,one of the problems im hoping to solve is a run away,when started out of the water.( vac leak,or wrong jetting,right?)

i can't post a pic, ski is in the middle of being built as we speak, but 951 pics are everywhere.

the diaper goes on the bottom middle of the pic, you should be able to see it, its fairly obvious how this goes on, the flaps will make you scratch your head trying to figure it out. you'll swear you have the wrong parts, then the light will come on and you'll be "oh ya..... duh....." and it will slip right on.

so the diaper goes right were the manifold meets the pipe. it keeps water from spraying out the exhaust pipe manifold gasket and allows it to drain down below between the carbs (i think hehe), because it always seemed silly to me but if the engineers thought it was important then i'm keeping it. I think they changed the gasket after the first year too. (duly noted I understand the purpose of the diaper about as well as I do the baffle on the x4 hulls)

the flaps are actually very important...to redirect any water away and over the top, correct me if i'm wrong but I don't think the first 951's came with them, (or maybe it was no diaper first year), they were added the 2nd year to correct issues with water getting down into the carbs. (really really bad for a 951) I will say this, at least 60% of the ski's I see come in are missing the flaps and the diaper, or at least some parts are missing, granted this is only a few ski's but others may confirm, its quite common for these to be missing. I believe the people that have them missing had this issue:

then they moved on...

duly noted: if you rejetted when you put on the proks, you'll have to pull the carbs and rejet again, maybe you posted that early in the thread, I forget.

the bottom line, if your going back to stock, just make sure you have everything, otherwise, your just tempting fate.

 

[donkey]

cool thanx tim,
the ski had the proks n reed block when i bought it.the jets in it are way bigger than the stock ones,but not quite right.
topend was real smooth n good plug color,bottom end was burbley,till mid throttle.it would still rip ur arms off,but irritating to hear n feel it burbling.
my biggest fear at thiis point is getting rid of the run away,like on the trailer to blow the water out.runs away EVERY time.might (borrow) some block off plates n check everything as im doin all the other stuff to it.
just want a reliable fun ski.doesnt have to be the fastest.(kinda interesting that the 96xp will outrun it)

 

[Spimothy Leary]

hmmm the 96 xp might hit it out of the hole.. but a 98 xpl should chase down and pass the 96 xp easily.

i'm not tuner, but i'm in serious doubt that your fix a runaway issue just by swapping out to a stock airbox (and rejetting) my guess is there is something else causing this issue. just don't want to see you come full circle and have the exact same problem. (however duly noted, i'm of the opinion that the stock airbox is the preferred choice, especially if you like to jump wakes, or ride in harsh conditions), if this is just a flat water cruiser, then the proks are just dandy fine.

951's are known to run away, its not that uncommon, air leaks are generally the cause and the leak could be anywhere, but it still happens now and then with no leaks, have you checked the carb base gasket, the pulse line, or a leak near the reed to case ? fuel pump ? check valves ? maybe its just the reeds ?

bottom line, if you don't solve the lean condition, you'll eventually melt a piston, just because it happens only on the trailer doesn't mean its not running lean in the water, just that it doesn't run away...

again , i'm not a tuner.. just going from what i've seen happen and what i've read in the past, so a real wrencher would need to chime in here.

one thing to add... where is your idle set ? my guy likes to set the idle on 951's pretty low... lower than spec, which I think is 2800 (vs 3K on the your xp) but i think he sets it at 24-2500. (i remember discussing this on SDB's 98 GSXL, i asked why it was so low and it was due to possible runaway) so make sure to set it at a max of 28, and make sure the throttle cable isn't tight & pushing it over 3K

 

[Minnetonka4me]

Tim is spot on with what he posted above.

ill add a few things...

first that picture of the diaper...the flaps are INCORRECT in that picture. It takes me 10 min to figure it out it would have been nice if they put 'top' and "l/r" on them. The rule of thumb is expect water to spray out of the mani/pipe gasket....you are deflecting it AWAY from the airbox tubes and carbs as best as possible. The design has me still scratching my head.

Also...on the gasket update...they didnt switch it till 01. 97.5-2000 had the paper gasket. Due to that nut never getting tightened properly they added the diaper for further protection. I'd say the 01+ is a little better.

Water is always an engine killer...but the 951 is so under engineered it makes it that much more important to keep it out. I suggest one way valves like duckbills or versaplugs with any machine that has aftermarket arrestors.

 

[Spimothy Leary]

glad to hear I was correct, i don't like commenting on 951's since i have very very little experience with them, but i've ridden with 951 junkies for quite some time... and i'm a curious george type so I ask a lot of stupid questions... (why did you do this.. why does it do that... i think i drive my buddies a lil' crazy but they're used to it now after 3 years and 100's of questions)

lol I just looked at those flaps,your right, those are really wrong I was just looking for a pic of the diaper and didn't look closely.. sorry

duckbills scare the hell out of me ! personally I refuse to use them on any ski, either its personal or being sold... but many people have used them for a long time with no issues, but whatever, maybe I just have too much faith in my bailers but i've always had a very dry ski as well so my faith in bailers seems to be ok for my use...

bottom line, you still need to search out the root cause of the problem,,, just like if your car has a one worn tire, you won't fix the problem by replacing the tire, you need an alignment....

and in the end it might "fix" itself just by you tinkering around with the carbs, i'm assuming you've checked for clogged jets and screens, etc....

and I will re-stress the idle...try to set it lower... it seems silly but its not..

 

[Minnetonka4me]

Yes the valves add another chance of issues. I've had duckbills fall off...and versa plugs just need a zip tie or whatever to jam them open. BUT...they keep a bilge WAYYY drier than the stock crap or bilge pumps.

 

[SabrToothSqrl]

the 951 went to a rubber exhaust manifold to pipe gasket in 2000.
the 951 changed those rubber flaps in 2001, which also uses different metal tabs (these have 2 'tabs' per piece)
the 951 went dual ignition coil in 1999
the oil pump and bracket were changed in 99 as well

but hey; what do I know about 951s

carbs are also a little diff 98-99.

 

[Minnetonka4me]

LOL how could I forget after me sending 3 sets of those brackets to you before we got it right!!

 

[donkey]

thanks for all the info.
i know there is an issue,not sure were it is,yet.in the water the idle was good n smooth at around 1200,out of water, well, get away! RUN!!!
i even turned the idle screw 1/2 out(slower)still,would run away,if u touch the throttle at all.im changing back to stock to get a baseline.i did mention earlier that i may need to prssure check the engine while im in the process of goin stock(i kinda hinted at borrowin some block offs in an earlier post).
any way i do expect to find a leak,hopin like hell it is a bad gasket at the reeds or a carb base gasket.
minnetonka,ill pm u tues,with a pocket full o'cash,n we'll get this figured out straight away!!

 

[donkey]

i believe i found the source of the run away today,the rave solenoid hose was burnt thru by the exhaust.
ran a new line,started n ran ok!no run away,atleast for the short time i ran it.
still goin back to stock.

 

[Minnetonka4me]

Nice!!!!!!