Can anyone tell me what tank this is?

[skids]

Sorry Thruxtone, that last should be SF,SG and SH for the Special designations.

I was scratching my head for a second...

[thruxtones]

One more question since you guys have been so helpful.

So I've found two petcocks on eBay a left and a right. Can anyone confirm these are for a standard tank and not the special??

http://m.ebay.com/itm/YAMAHA-78-79-8...228?nav=SEARCH

http://m.ebay.com/itm/Misc-5017-Yama...453?nav=SEARCH

[bikerphil]

Yes those both are for the Standard, lot of $ for something that will most likely need rebuilding.

[thruxtones]

Yes those both are for the Standard, lot of $ for something that will most likely need rebuilding.

I don't really have a choice now now do i??

I have a tank without petcocks.

[thruxtones]

Actually Schming pointed out this guy who I was able to get in contact with.
And he's offering an aftermarket petcock that is NOT vacuum.

TANK-MOUNTED MANUAL FUEL VALVE:

fp17) Aftermarket complete MANUAL ON-OFF-RESERVE FUEL VALVE KITS. Not really a "petcock" in the XJ sense of the word. Yamaha designed their petcocks to be a very clever "automatic" fuel supply valve, meaning it has to have engine vacuum for it to function. Great idea (when it works) because it allows us to basically "set it and forget it". Bad news is that when the seals go bad, or as age wears the internal components, it can become a really bad idea, since it will leak fuel into the carbs when it's not supposed to, leading to flooded carbs, fuel in the crankcase, spun bearings, etc.

These MANUAL FUEL VALVES are either ON (in either the standard "ON" or the "RES"erve positions) or OFF. It doesn't depend on engine vacuum, just gravity. So it won't ever leak or pass fuel in the OFF position. That's the good news.....

The bad news is that you have to remember to turn it on or off manually (as in every time you start your bike up or shut it down) or, instead of blaming a faulty petcock for your resultant problems, you'll have to blame yourself!

Once installed, these units will fit and look similar to an original XJ-series petcock. You will need to remove your petcock vacuum line from the #2 or #3 intake manifold boot nipple and replace it with a rubber block-off cap plug. These fuel valves use the same size fuel line as original.

Anyone have an opinion or experience with this model??

XJ550, XJ650 (except Turbo), 1981-83 XJ750, and XJ1100 models:

HCP20971 OEM ON-OFF FUEL VALVE KIT, contains a brand-new replacement fuel valve which will fit all XJ650RJ Seca and XJ1100 models. Includes the fuel valve, attaching hardware, filters, and an intake manifold vac port cap and clamp (to block off the now-unused intake manifold port). Does NOT require fuel tank opening enlargement! NOTE: requires two units for use on XJ1100 models, and the fuel outlet port will be pointing "forward" when installed on the right side fuel tank outlet. Each:
$ 59.95

[bikerphil]

You can get a new manual left side for about $40 from MikesXS, block off the right side of the tank and run the fuel line to a "T" to supply the 2 fuel lines.

[TopCatGr58]

Hey,

You're a Canuck , , check with Andreas Weiss, he's a member here and is a parts broker from across the border, and provides much better prices than eBay, and may have some standard petcocks for a much better price so you can then afford the rebuild kits and still possibly come out a bit cheaper?? JAT.

T.C.

[Eveready1100]

I still would like to see the shape of the tank from the side.
People have been known to respray the fuel tanks even if they're only 35 years old.