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2000 Challenger

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noswal_j

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Hi, I am a new member and have a question regarding my boat. I have a 2000 Challenger and it has twins. Are they 717's ? I am confused. And how could I tell? The boat is 14 foot. I don't have a manual for it? :(
 
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A 14 foot, twin with 720 engines is going to be a Speedster. If you have a twin Challenger 1800 it's an 18 foot boat with 800 engines.

Post a pic, and we will tell you what you have. Also, tell us the last 2 numbers on the hull ID number.
 
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Actually... in 2000... there were 3 Challengers. The regular 14.5' challenger had twin 720 engines. The challenger 1800 (18') and the Challenger 2000 (20') both had the Merc drive system.

Please forget my post above. I forget sometimes that 2000 was the transition year for the sport boats.
 
Thanks for the quick reply....:)

Last 2 numbers of the hull are 00.
 

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OK... an 00 on the HIN makes it a 2000.

Essentialy... that is a re-badged speedster from 96-99. If you become a member here... you can down load the manual for it... or a speedster of the years listed.

In 2000... the speedster received the new Merc drive system. I don't know why they changed the speedster into the Challenger for that one year... but it's probably to use up old parts.

Either way... it's a nice boat. :cheers:
 
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thanks....

ok, became a premium member. So you say I have the 720's. I am going to get the manual for a 1999 Speedster.:)
 
Carbs..

Ok, so I found out I have 717's in my boat. I want to rebuild the carbs and would need a kit. Looking through the manual, I can't find a part number for type of carb/kit I require for my boat.:confused: Any help is appreciated.

As well, what is the difference between SBN and BN..??
 
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Yes... your boat is basically a 99 speedster with different stickers, green seats, and a green hood. :)


Wellllllll.... the BN and SBN are close to each other. You will have "Supper" BN carbs.

The regular BN carb had a round pump/diaphragm body. The supper BN has a square body. But there is one last version... the is an "I". THe "I" has a normal 2 bolt flange, the standard version has a 3 bolt air box flange. There are some other differences... but that's the easy way to ID them.

Your boat should have two Super BN-38i carbs on each engine. You can order a rebuild kit from any reputable watercraft shop. BTW... get a real Mikuni kit. I've been having problems with hard starting, and import diaphragms.
 
Very nice....

Hey Doc, you make house calls?....Just jokin' I appreciate the info as will my wife and little girl come summer. Just waiting for the ice to melt, and in the mean time, get the boat prepared for the long days of summer. More questiuons to come. Once again Dr., thanks for the help!:hurray:
 
Yes... your boat is basically a 99 speedster with different stickers, green seats, and a green hood. :)


Wellllllll.... the BN and SBN are close to each other. You will have "Supper" BN carbs.

The regular BN carb had a round pump/diaphragm body. The supper BN has a square body. But there is one last version... the is an "I". THe "I" has a normal 2 bolt flange, the standard version has a 3 bolt air box flange. There are some other differences... but that's the easy way to ID them.

Your boat should have two Super BN-38i carbs on each engine. You can order a rebuild kit from any reputable watercraft shop. BTW... get a real Mikuni kit. I've been having problems with hard starting, and import diaphragms.

noswal_j...your boat is nothing like a 99 Speedster. That year Speedster had twin 800cc and are 16ft long. Do not download that manual either. Download the 2000 Challenger. If you wanna compare your boat to previous ones, then compare it to the 96-97 Speedsters.

Also, your carbs are not duals'. You have a single SBN-40i series,(on each motor), with an accelerator pump assy. Hope this CLEARS it up for you...:cheers:
 
Challengers....

A 14 foot, twin with 720 engines is going to be a Speedster. If you have a twin Challenger 1800 it's an 18 foot boat with 800 engines.

Post a pic, and we will tell you what you have. Also, tell us the last 2 numbers on the hull ID number.

This was a limited and weird design for the 14 foot Challenger. When the Challenger came out in 96, it was equipped with the single 787cc. There were only two years the 787cc was used in the 14 foot version. In 98, they went to the 717cc but they came out with the Challenger 1800, which they put in the twin 787ccs.

In 99, you could get the 14 Challenger with twin 717's but by 2000, they were swapping to the larger M-2 engine. So, yes, there were like 3 versions of this boat in 2000.

Like Dr. Honda (I can tell he was a bit surprised too), I was taken back by this obvious confusion they created when the Challenger started through all these changes in 98......:cheers:
 
new problem..

Ok, So I took the cover off the boat and took a real good look. After removing the air intake silencer I saw there is indeed one carb. When doing so I noticed there was a small "pool" of oil accumalated below the engine on the motor's support plate...? Any ideas on that?
 
ok, just went out and wiped it clean, there wasn't an over abundance, but enough to draw my attention to it, so I will have to wait till summer to see if the oil magically re-appears. I have had the boat for 3 years and this is the first time I have really looked there. So it could have possibly been there for 10 years!

Back to carbs, since Seadooya metioned my carb type, I will need to oreder that kit. ok I took your advice Snipe and went to SBT. I got this number ....Code:35-160... is this the right one??? Is it better to have just one carb per engine....why or why not..?:confused:

Also, I don't see any Fuel filter and bowl...? Should there be one, or is the filter in the baffle and carb adequate?
 
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SeaDooya is right. I checked over the parts explosion for that boat, and you should have a single pumper carb on each engine. And yes, the 35-160 kit will work for your carbs (need 2 kits) but it doesn't have the AP diaphragm.

Like I said above... it was a transition year, and there were a few things that changed from the norm.

The oil... well... since you have 720 engines, the only oil is in the tank. Just look at the hoses for a crack, or leak. Also, the center of your engine is pumping 2-stroke oil to keep the rotary valve gears lubed, and you could have a leak at one of the fittings.

I would just clean it well... and start looking for the leak.
 
Thanks....

Thanks for the response Dr., I have 717's. Or are they A.K.A. 720's??

What about the Fuel Filter? I don't see one, should there be, or is the one in the baffle and carb sufficient?

And for the carbs....is it better to have one carb per engine?? What is the difference if there is?:confused:
 
Sorry... yes, the 717 are called 720's, as the next size up (787) are called 800's.

On the parts explosion, it shows a filter for each engine. Since things changed that year, I'm not going to guess where they are at, but normally, they are mounted above the fuel tank, in front of the engine. They could have been removed by a previous owner, but I recommend a filter of some sort before the carbs. The carbs do have a small filter in them, but it will plug up quick if there is a problem.

As far as 1 or 2 carbs per engine... that's a big debate. Honestly ... I like a single. It makes it easier to tune, and there is less to maintain. But, you can flow more air with 2 carbs, and have a more reliable transition. (that's why you have an accelerator pump) A large single... when opened quickly will loose vacuum, and in turn, loose fuel. (the AP gives a squirt to help get over the transition) 2 smaller carbs have more flow, and maintain vacuum at full throttle, at low RPM's.

Hope that helps.
 
Nice work

I appreciate everyones help. Thanks alot. After I start inot them I will keep in touch, if I don't have anymore questions befroe that! Again, Thanks, JEFF:cheers:
 
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