RESTO 99 Challenger 1800 - SEADOO REDO

[dmiles]

Awesome work man, I kept thinking now why can't I have neighbors like this, instead of, well that's another story.

I'm looking at a '97 Speedster with dual 787's that I've been letting the current owner hang on to until he agrees to a test run. I'm sure there's a reason he doesn't want to do it. I just need to make a deal based on what the reality actually is, not what he says it is. I've learned so much from your thread that I'm ready to call him up again. All he is willing to do so far is start it up in his yard. Scary amount of smoke, even for two 2 stroke engines in my opinion.

It was between his boat, or a newer 4 stroke that is 3.5 hours away. Needless to say, I'm anxious to see what the issue turns out to be with that top end. Thanks so much for taking the time to document your work. I have no doubt that it has helped a bunch of people a whole lot.

 

[nickj718]

Awesome work man, I kept thinking now why can't I have neighbors like this, instead of, well that's another story.

I'm looking at a '97 Speedster with dual 787's that I've been letting the current owner hang on to until he agrees to a test run. I'm sure there's a reason he doesn't want to do it. I just need to make a deal based on what the reality actually is, not what he says it is. I've learned so much from your thread that I'm ready to call him up again. All he is willing to do so far is start it up in his yard. Scary amount of smoke, even for two 2 stroke engines in my opinion.

It was between his boat, or a newer 4 stroke that is 3.5 hours away. Needless to say, I'm anxious to see what the issue turns out to be with that top end. Thanks so much for taking the time to document your work. I have no doubt that it has helped a bunch of people a whole lot.

WOW very kind words thank you.

If you need to chat about the boat before you but it PM me and ill help you out

 

[snikwad003]

I'm itchin to see those fotos, and the ones in the x4 thread on a side note, cause if you went lean and your oil pump was pumping wtf? What a bout the little oil nozzles in the manifold?

 

[nickj718]

I'm itchin to see those fotos, and the ones in the x4 thread on a side note, cause if you went lean and your oil pump was pumping wtf? What a bout the little oil nozzles in the manifold?

Photos should work now

 

[snikwad003]

Yep photos good. Did both just loose compression cause mag looks way worse than pto

 

[nickj718]

Yep photos good. Did both just loose compression cause mag looks way worse than pto

To be honest i have no idea what the compression was lol I pulled the rave, saw the scratches and said no way its staying like that no matter what the compression is. The PTO doesn't have scratches you can feel. Its smooth as a babies booty

 

[BoLongo]

The rings are in good shape, looks like they seated. My guess would be lack of lubrication but you already checked the oil pump.

Another possibility could be water in the chamber washing the oil from the walls but the o-rings look good.
Just a thought; is there any way that water could back up thought the exhaust port and enter the cylinder? (Faulty water regulator)

 

[snikwad003]

Did you keep that rave or swap it out too

 

[nickj718]

Did you keep that rave or swap it out too

New rave to match the new cylinders. The rave had no contact with the piston

 

[nickj718]

The rings are in good shape, looks like they seated. My guess would be lack of lubrication but you already checked the oil pump.

Another possibility could be water in the chamber washing the oil from the walls but the o-rings look good.
Just a thought; is there any way that water could back up thought the exhaust port and enter the cylinder? (Faulty water regulator)

The head was caked with 2 stroke oil so i know the oil wasn't the issue. After I put the new top end on I disconnected every water line and blew it out. I also replaced the water regulators so I'm with you on that one

 

[snikwad003]

Ah didn't read that right I thought you were saying the marks were on the rave

 

[nickj718]

No worries

 

[Ankeneyou]

Any chance one engine died at speed and forced water through the exhaust?

 

[nickj718]

Any chance one engine died at speed and forced water through the exhaust?

It did die at 3/4 throttle. Also when i got the new top end on and started, it dumped about 3 gallons of water onto my garage floor. I had no water inside the engine when i removed the jugs

 

[Teebsa]

Great job on the boat, very similar to what I want to do to mine. This was a great inspiration.

 

[BoLongo]

Nick,

Any updates? Have you decided on a cause for the piston scuffing.

 

[Ankeneyou]

I think he said it was a blockage in the water regulator on the Facebook group. I decided to one up him and smoke both my top ends, lol. Good times.

 

[nickj718]

The water regulator was faulty and stuck in the down position not allowing water to enter the exhaust which in turn melted the exhaust tube preventing water from exiting the boat. This allowed the ending to take a gulp of water which is what marks were from. The reason the water regulator failed was due to sand, so now both inlet house have water filters before the T fitting. The top end was fine and had good compression I just chose not to leave it with scored pistons. Im anal when it comes to things so if it has a 2% chance of failing its out with the old and in with the new.

I couldn't find a used exhaust tube so I improvised

Old:


New:

 

[XP 787]

What filters did you use?

 

[snikwad003]

I think he said it was a blockage in the water regulator on the Facebook group. I decided to one up him and smoke both my top ends, lol. Good times.

Well my boat has less interior now than it did in Florida

 

[nickj718]

What filters did you use?

This one here: https://www.amazon.com/gp/product/B00CH29IK2/ref=oh_aui_detailpage_o06_s01?ie=UTF8&psc=1

 

[Ankeneyou]

Ha, those are the exact ones I just put on my speedster.

 

[BoLongo]

I'm glad you got that figured out. Nice work!
Question if you were able to see the pissers, could you have seen that water was not coming out?

 

[racerxxx]

I'm glad you got that figured out. Nice work!
Question if you were able to see the pissers, could you have seen that water was not coming out?

Pissers come of the top of the manifold and will flow water if the water reg is bad. The water reg regulates the water to the inside of the pipe. The pissers are from the outer jacket of the cooling system.

 

[squad1]

Pissers come of the top of the manifold and will flow water if the water reg is bad. The water reg regulates the water to the inside of the pipe. The pissers are from the outer jacket of the cooling system.

Not to hijack, is the water reg the same as the water valve? So if I have a small stream of water coming from the back of my 97 Challenger while idling and under way, that means my water valve on my resonator is bad? I thought that was an indicator that the cooling system was working.. I had opened the valve up and everything looked intact. No melted connectors in the exhaust system. The only thing that was questionable was the fact that the water valve is able to rotate on the brass fitting, at least the amount of slack allowed by the small hoses off the valve. Thanks