Petcock issues.

[thkbaron]

So I thought I had a 1980 gs750lt but I think it's an lx. Got a new petcock, one with the fuel line and vacuum lines pointing left towards the front of the bike and it doesn't fit. should have measured the dang holes first. stupid mistake. anyways. so I have 44 mm holes instead of the 50. the lt's have 50mm holes. anways, are there any petcocks that size that shoot the lines to the left. I can't seem to find a good way to run the lines with the hoses pointing right. everything is pinched. I'm wondering if someone put an lx tank on an lt bike. What are the differences between these bikes besides my obvious petcock difference? Thanks!!

 

[DannyMotor]

The LT petcock is wider, and has the cross-bars in the rubber gasket that hold it in place. Yes, 50mm wide. It's the same as the E, L, TD, ET, TZ...

The LX petcock has a simple oval o-ring, no cross-bars. Yes... 44mm wide center-to-center.

^^ This is the one you want.

 

[thkbaron]

Thanks for the information. Yeah I figured that out, but seriously where is the proper location to route the vacuum line and fuel hose. I managed to get it done, but there's no way to tip the tank up at all without disconnecting the lines. Just wondering if anyone knows. I would love to get a petcock that shoots the lines to the left. It would be much easier to work with. Pingel has one I could use, but talk about $$$

It really weird why they did an lt and and lx. I really can't find that many differences besides the petcock and decals.

 

[Nessism]

Can you remove the back plate on the petcock and rotate it?

 

[thkbaron]

yeah but that doesn't fix where the fuel line goes, only the vacuum line.

 

[Guest]

The 1980-81 GS750E, 1100E and GS 750L, 1100L all have the same petcock, 50mm bolt holes. Problem with the E models is that the petcock sets right down on the top of the chrome air cleaner cover, no space for a proper lever petcock (such a stupid placement and petcock design). Not sure about the Ls.

 

[old_skool]

yeah but that doesn't fix where the fuel line goes, only the vacuum line.

You still letting that thing kick your a$$, next time measure measure measure...not that you don't feel bad enough for spending the extra money already...just razzing you a little, I'm telling you, do away with those crap petcocks, Z1 has the 50mm adapter as well, I'm about to do the adapter and petcock change now on the wife's bike. You still want pics of how I routed mine??

 

[Killer2600]

Thanks for the information. Yeah I figured that out, but seriously where is the proper location to route the vacuum line and fuel hose. I managed to get it done, but there's no way to tip the tank up at all without disconnecting the lines. Just wondering if anyone knows. I would love to get a petcock that shoots the lines to the left. It would be much easier to work with. Pingel has one I could use, but talk about $$$

It really weird why they did an lt and and lx. I really can't find that many differences besides the petcock and decals.

What's the big deal with tipping the tank up? I can't tip my tank up more than a couple inches without disconnecting the fuel line, vacuum line, and electrical and the bike is in factory form. It doesn't bother me because A) it's how suzuki intended it and B) If I really need to get under the tank that much I rather just pull the tank off the bike at that point.

Running longer lines also can lead to fuel issues - there is a certain sweetness when being short and direct.

 

[Guest]

What's the big deal with tipping the tank up? I can't tip my tank up more than a couple inches without disconnecting the fuel line, vacuum line, and electrical and the bike is in factory form. It doesn't bother me because A) it's how suzuki intended it and B) If I really need to get under the tank that much I rather just pull the tank off the bike at that point.

Running longer lines also can lead to fuel issues - there is a certain sweetness when being short and direct.

I always seem to be tipping my tanks up, even if I'm going to pull them.
A small box underneath the rear will allow me enough height to liesurely disconnect the gas lines
the fuel sending unit electrical connections, vacuum line, and anything else I need to do, like pull the overflow drain hose for the fuel sending unit. I guess for some bikes this is unecessary, but it works for me.

 

[Killer2600]

I always seem to be tipping my tanks up, even if I'm going to pull them.
A small box underneath the rear will allow me enough height to liesurely disconnect the gas lines
the fuel sending unit electrical connections, vacuum line, and anything else I need to do, like pull the overflow drain hose for the fuel sending unit. I guess for some bikes this is unecessary, but it works for me.

Well I can tip my tank up to do that stuff but I definitely didn't have to re-route fuel lines and such to do that stuff. A couple inchs is all I really need disconnect hoses with ease.

 

[Steve]

It really weird why they did an lt and and lx.

Well, that part is really easy. :-k

The LT was made as a 1980 model, the LX was for 1981.

You say you have an '80 750L. When was it made? If it was made after about July or August of '80, it might be an '81, therefore, an LX.

The "T" is the official designation for 1980 models, the "X" is the official designation for the 1981 models.
Saying that you have an " '80 750LT" is redundant, as the '80 and the "T" say the same thing.

.

 

[thkbaron]

I'll have to check it out. I know the sticker on the neck of the frame has mostly peeled off. I'll have to see what information I can find. The title for it is still being processed. Minnesota is still way backed up with processing these things since we had that shutdown last summer. I would imagine that info might not be on there. Anyways. I'm guessing it's an 81 then unless someone switched the tanks before I owned it. It's a good possibility.