? jet size

well I finaly pulled the carbs on the 77 LTD 1000, and did I get a shock:ohmy:
the carbs are pretty clean inside, but the jets
main 95 and 15 , this dosent seem right
the bike has a rectangle "bread box" air cleaner and a header. what needs to be in ??

ever since I bought the bike it always seemed just a bit down on power, and I have been slowly working on it while still getting some riding in

Just to confirm, does this set of carbs have one fuel inlet or two? It sounds like Suzuki VM26 jetting and not 77 KZ1000 jetting. The 77 KZ1K should have #107.5 mains and #17.5 pilots. The Suz carbs will also have both air and pilot fuel mix screws. With the cheese grater airbox and 4 into 1, you should be running #115 mains, #20 pilot jets and reclip the 5CN8 jet needles to the 3rd slot.

it has one fuel inlet, and there is another adj screw ,I will put a mic on the bore size in the morning, but if these are wrong I need to replace them with the right carbs

26's work fine on a stock 1000. Jetted right w/ correct pilots they're ok. JT McCulloch ran 26's on his stock 1000 before he did some mods. It ran great.

I have 26s on my 79 shafty KZ1000E1... they work well. The suzuki version of the VM26 is way leaner than any of the Kaw versions... they have one fuel inlet and both air screws and pilot fuel mixture screws. When Kaw went to accelerator pumps to avoid leanness, Suzuki went to more leanness on the jetting. When I tune a set of the Suzuki carbs for stock airbox/pipes, I have to install larger main jets on a stock KZ900 just so I can pull redline. This is for carbs off a GS1000... I can't imagine them running good this lean with that jetting. Best to ident WHICH VM26 is on the bike and then worry about jetting.

George, you are correct, the bores mic out at 26.58mm,I have looked all over for some numbers to id the carbs, but nothing, they do have a air ajd screw on the top(body) of the carbs other than that they look like any other carb

I pulled the needle out today and its a 5DL36 and its on the third down from the top, so thid thing has me bumfuzzled

I believe I posted a pic showing the ID mark location. Those are GS Suzuki carbs... not sure if they are 1000 or 850 carbs... the jet needle 5DL36 is only used on GS models. To find the pilot fuel mixture screw, remove carbs. Turn them upside down. Look at the float bowl toward the engine side. In that round well should be the pilot mixture screws. If they are not there, there, you should be able to see THROUGH the hole down into the venturi by a very small hole in the venturi. The Suzuki pilot screws OFTEN have the tips broken off as the Suz version of the VM26 specs this hole in a MUCH smaller diameter than similar Kaw pilot holes... Folks tighten the pilot screws a bit and the tips just break off in the hole. It is a bit of a trick to remove the broken screws without damaging (enlarging) the hole.

I looked on the spot you show, but I see no mark there, and wes there is a screw in the bottom as you describe, I looked at the needles they are not broken but a couple of them are bent on the end.
The question now is, should I keep this set or look for the right carbs for the bike

Not sure how old you are BSKZ650 but I use a magnafying glass to see the ID mark numbers... They are lightly stamped in the flange of the carbs. I personally don't care much for the GS carbs... the air screws and pilot screws make tuning idle fussy and they are just too lean. Buy a set of KZ VM26 carbs... Keep in mind that the earlier (76/77) will not come with vacuum ports for a vacuum petcock if you need this. I think the 78 carbs did and while they are lean, they can be rejetted to make them OK... The 79 and later VM26s have the pump and are basically junk... If I wanted accelerator pump carbs, I would use the 28s as they tune easier. You will find that GS VM carbs don't go for much on eBay.

I am old enough that I had to use a magnafying glass, damn bi focals, the number is 490 and 00 under that.
maybe these would be the super high perf edition:P

No, actually they are not "high performance" bwhahaha probably from a 79 GS1000. The 850 carbs and 1000 carbs are VERY VERY close in spec... The GS1000 carbs are far better than the early GS750 carbs which are almost impossible to tune due to their strange internals.