What engine?

[teronas]

Hi,

I just picked up my first superjet and I am curious if anyone can tell me what engine I have. I think it is 61x/61x but I am not sure. If it is, will a 650 factory pipe perform well with it?

 

[nightrider05]

Looks like 61/61x to me. Is that a Bpipe manifold?

 

[Mike W]

Does the cylinder have 61X stamped on it?

 

[Ericfox]

you have to look at the stamps on the case and the cylinder... all the castings have the stamp... get a little inspection mirror and a flashlight and that will help... otherwise just use a flashlight and stick your head in as far as it can go hehe... its def. not a 62t case though... thats about all I can tell with my limited knowledge... maybe someone can tell just from some casting differences or something? If you have a 701 then get the 701 factory pipe... if you have a 650 then get the 650 factory pipe... savy?


Nice avatar hehe --> View attachment cartman.bmp

 

[Big Kahuna]

the 650 pipe will work, but not nearly as good as the 701.

 

[Mouthfulloflake]

it is for sure not a 62T cased engine.

cant tell 61x/650 from your photo.

take closer photos of the EXAUST side of the cylinder, and also close ups of the nomenclature tags circled in yellow in this pic.

 

[Ericfox]

while you're at it put a couple crumpled up paper towels in that exhaust manifold opening... hate to see you drop something in there and not realize it...

 

[teronas]

Ok, I will take a closer look and get some better pictures after work today.
The ski came with a factory 650 b pipe, but the guy I bought it from wasn't too sure what the cyl was /bore size. Would it be possible to get a b limited chamber and use in place of the 650 chamber? (would it be a good idea if possible?)

I was contemplating between cartman and butters for the avatar. I might switch to a shot of butter's "what what in the butt" video; that was hilarious.

 

[Ericfox]

welcome to the X btw...

 

[keefer]

Post up some pics of the rest of the factory pipe also. Are you sure it was a 650 pipe? What year is the hull? Look at the last two digits of the Hull ID plate on the top of the exh side gunwale.

 

[teronas]

I'm 90% sure it is a 650 chamber. I will post a pic of it after work as well. The hull is a 91, but the guy i bought it from said he did some engine work and raced or something, so I am hoping its not 6m6 cyl. 61x would be the ideal, correct? thanks for all the help so far.
Bryan


Also, thanks for the welcoming!

 

[teronas]

Here are some more pictures of the engine and exhaust. So the 6m6 on the case means it is a 650 engine not a 61x? I didn't see any markings on the cylinder anywhere, but they would most likely be 6m6? I also received another cylinder with the ski; the exhaust ports look like they might be cracked? I posted a picture of one.

 

[teronas]

few more pics
..there was one marking on the cyl, but i can't tell what it is.

 

[Boris]

Looks like a 650 to me.
Could have been bored out some but still a 6m6.
The pipe is a 650 pipe as well.

 

[keefer]

Look on the intake side in between the cylinders and see if there is a mark there. If 61x you have a 701 cylinder with the larger ports & good timing, I don't remember what the stock 650 mark reads. I would say you probably have a 650 since that is definitely a 650 FP chamber and you have 650 cases. Hopefully that cyl is ported and it should run pretty good even if it is a 650 with the ProTec head.

 

[Mouthfulloflake]

650 cases and cylinder

cylinder MIGHT be bored and or ported, cant tell obviously without internal pics.

the other cylinder is a protec cylinder, was likely a $$$ cylinder in the day, and might still be.

edit, pic added.

61x cylinders dont have these bolt holes and bosses.

 

[teronas]

ok, so my friend was looking on the cyl for any markings and he noticed that on the very base under the exhaust manifold it is marked with 6m6. I am hoping it is ported as well, I might pull the head to examine what there is.

 

[Mouthfulloflake]

make you will likely have to replace the O rings in the head if you pull it, unless they are nearly new, and you are very careful.
you can order them from mcmaster carr for just a few bucks.

it is for sure a 650 case and cylinder, it might be bored to 81mm ( 701) and it might be ported, you will find out both things when you pull the head.

 

[teronas]

I pulled the head off to check for porting today, I do not think porting has been messed with, but I am not sure. Also, Mouthfulloflake said that the O rings in the head might need to be replaced, but there were none. Do I need to get some O rings? If so, can anyone tell be what I need to get?
thanks
Bryan

 

[Kennay]

No, you have a head gasket instead... wouldn't hurt to replace the gasket since you pulled the head, or either get some orings though