XJ 700 Mufflers

A quick question for all you XJ700 guys:

Are the MUFFLERS the same between the non-X and "X" model bikes?

The part numbers seem to indicate they are the same on all but the XS/XSC models, but I think that may be due to it being a "combined" part ---the XS/XSC part numbers include the muffler and the inlet gasket and hardware, whereas all the other models list the bare muffler as an (obviously) different part number.

Anyone have both a water-cooled and an airhead XJ700 model that they can compare for me?

Thanks!

 

Hey, Len!

I have both and though I can't speak for the internals (baffles, etc), outwardly they seem to be identical.

 

I have two x's and one xj. I took the exhaust off the xj and put it on the x. weird fit, but it worked(and this was a mac). The current exhaust is an oem versionon my one x, and it came off an xj. They fit up just fine, no worries even though the part numbers are different. silly yamaha

 

Hey Maximum! Do me a favor then........pretty please!......if the mufflers on your bikes are originals, look on the cans, and near the rear of the can, just before the muffler end, is stamped (engraved/punched) the OE yamaha part number (very tiny, also says Yamaha before the part number). Can you let me know those numbers, and which ones go to which bikes (if they're different). Also what year bikes they are on, thanks!!!

Mcrwt, also thanks for the info. I'm kinda surprised that the X and non-X headpipes interchange, but maybe that had to do with it being an aftermarket system. I know that the headpipes and the collectors differ between the two versions of the bike, and I'm not too concerned about that issue right now (they may very well interchange, but they carry complete different original part numbers, unlike the muffler cans, which is almost identical as mentioned above), I'm just tryng to decipher the mufflers right now. So can you also check the muffler can numbers on your bike also (and let me know what year it is or came off of)?

Thanks guys.

 

Will do, Len! I'll have to do a little digging to get to the garage but I'll try to get back with that info either later today or tomorrow.

 

Okay, just let me know, thanks!

 

Okay! As my mufflers read...

MaxX '85:

Left- 1AA-14711
Right- 1AA-14721

Max700 unknown vintage ('85 or '86):

Left- 1NH-14711
Right- 1NH-14721

Like I said, they look identical and I think the last time I checked the gastanks for those bikes had the same part numbers except the prefix part and I'm pretty sure that those are interchangeable but I've never tried to swap em.

Hope that helps! J

 

Oh yeah... Doubt it makes a difference, but my X is a 750cc Canadian version. The XJ700 mufflers were off of an American bike.

 

actually, the entire exhaust off a stock xj fit my x with no isues what so ever and my dad did the same thing, xj exhaust on his x. Don't know what the exhaust port size difference would be if any on the 750 canadian model. The cans should be the same though.

 

Thanks again guys.

Maximum.....another question for you. Since we don't get to see many XJ750-X models down here in the states, I was wondering if you can tell me whether this statement is true (or to what degree it is true or false):

"An XJ750-X model is IDENTICAL IN ALL ITS PARTS, FEATURES, ETC. as an XJ700-X model EXCEPT FOR THE ENGINE."


I get quite a few requests for XJ750-X parts, and since I don't have a parts manual that covers those models (I need one!), I have to basically default to saying "the parts that I have SHOULD fit your bike because the parts are correct for an XJ700-X, and a 750-X is really just a 700-X with a bigger engine.......".

Any help or insight is apprecaited!

 

As far as I know the only difference is in the engine, slightly bigger bore or longer stroke, I forget which. Bore would be nice and easy...

Other than that everything else seems to be identical. Of course, if you want the final word on all things MaximX, give HAP a buzz on the micapeak list. I'm fairly confident that he would give you a definitive answer.

In the meantime, if you've got any part numbers you want me to check shoot 'em on over.

 

Hmmmm....does that mean that you have a parts manual for one of these bikes?

 

Ummmm... Well, no. I was thinking anything with a part# stamped/printed on it that I can check.

Or do I? I now recall that a few years back I picked up a parts list thing on microfiche for MaximX. Don't remember if it was specifically for 700 or 750 though. And can't think where I might've put it. I'll have a hunt around and see if I can find it but don't hold your breath.

 

You're right... it doesn't make a difference. My 700X has the same part numbers. (BTW, Len, the numbers aren't THAT small.)

An article I read on Hap's site said that for the 700, they shortened the stroke from the 750, if that helps.

 

The mufflers on my 86 XJ700XS and my 86 XJ700S have the same numbers engraved into them.

 

MrCarb....yes, that is what the parts books show, also.........and the number should be 1NW-14720 (RH) and 11NW-14710 (LH), correct?

This is part of the reason why I asked the ? in the first place....it's so odd.... the part number correspondence shows the following pattern:

700 non-X:

LH: 1NW-14710 (700 N/NC/XN/XNC/S/SC/XS/XSC---in other words, ALL)

RH: 1NH-14721 (700 N/NC)

RH: 1NW-14721 (700 XN/XNC)

RH: 1NW-14720 (700 S/SC/XS/XSC)


You can see where the oddball-ness of this situation arises from.....from he list above, WHY would there be three different 700 RH mufflers?

AND, since the LH mufflers all use the same "parts book" number, why do we find some of them engraved as 1AA-14711 and others as 1NH-14711?

ARGHHHHH!

 

Good news/Bad news...

Found my XJ750XN Yamaha Service Manual! <-- That's the good news...

It doesn't have ANY part numbers?!!? <-- Yup. That be the bad news...

Sorry Len. And it turns out the microfiche parts catalogue thing is for a Fazer. Oops.

 

I referred him to the XJCD; the PDF file they have for the X parts listings has 750X parts as well.