Who can help me out with 79 GS1000E carb sleuthing? VM26SS with Dynojet questions

[salty_monk]

That does look like a Dynojet. You can see when they are stock, the Dynojet is quite a lot sharper and stock is usually a goldish color like a yellow passivate.... Do you have an airbox for it? I might have the set of stock needles and jets mine came with somewhere along with the DJ box & instructions.

I've personally had no issues with the Dynojet stage 3 with K&N pods & 4:1.

[oldGSfan]

OK I see, so that screw just is used as a puller to remove the anti-tamper cap then, once the cap has a hole punched in it. That is good to know, I can work with these.

Needle shows up as same part number from the '79 850G which I have a full set of...

Stock main is a Mikuni #95 on the 1000 but the 850G is bigger at #102.5. Interesting, I wonder if trying that combo plus the 'air correctors' makes sense? I have them in hand except the corrector, where can I source those? Oh wait I see you have on eBay.... future sale coming :-)

Thanks for your help, learning a lot.

[zed1015]

The GS1000E Dynojet kits include larger main jets , Different needles, metal shims a plug drill and THAT screw.
The drill bit and screw is used to remove the anti tamper caps on the fuel mixture screws on the far right of your pic which are not present .
You will need some genuine needles to put it back to stock , smaller mains than those 138's and if keeping pods just fit air correctors which do a nicer job than the Dyno jet.
Dynojet needles are known to be a bit rough and wear the needle jet.
Those plastic needle spacers are original and located correctly with the thin one underneath and the thick one on top.

[oldGSfan]

That is exactly what I want to do. I just want to be extra sure I'm understanding what the Dynojet changes were/might have been. I got a 5/32 drill, checked it with micrometer to be sure as my eyes are getting bad.... and it is far too large for the opening under the main jet in the carb body. If that is what is supposed to be drilled out, then it hasn't been done, which is great news to me. And if the needles aren't Dynojet ones either (hard to tell but a hint in those washers perhaps), and no funky sheet metal looking screw has been stuck in 'somewhere', all I need to do is what you say.

Edit: I see the spec sheet calls it a 'plug drill' so it may be that is for the 'emissions mixture screw', and the sheet metal screw is to block it off once drilled out? Seems very hack-ish, if so. And mine are not drilled out regardless. Hey, I don't know shine-ola about Dynojet kits but I think maybe the needle has no damage done, as the song says, sorta.

And I could ditch the pods if I can find a stock airbox for a decent price, and slightly mod my nice GS850G pipes to fit the clamp spacing at the head, as they fit fine otherwise.

Ideally you need to put the carbs back to stock.
Increase the main for the pods and pipe and fit air corrector jets to correct the off idle hesitation.
That's all that's needed.
No need for over complicated Dynojet kits with different needles , over large mains and bigger pilots etc that go to elaborate lengths to cure a simple fueling glitch.

[zed1015]

Ideally you need to put the carbs back to stock.
Increase the main for the pods and pipe and fit air corrector jets to correct the off idle hesitation.
That's all that's needed.
No need for over complicated Dynojet kits with different needles , over large mains and bigger pilots etc that go to elaborate lengths to cure a simple fueling glitch.

[oldGSfan]

79 GS1000E. K&N pods and V&H 4/1 - but may try to return to stock(ish). First thing is to try to tune it with what I have. But what do I have?

The main jets are Dynojet #138 which is the base jet per the 'fact sheet' for kit 3304.001 which is all I can seem to get from Dynojet support. Tech sheetd oesn't get into installation, drilling, etc. It just lists it's a 5/32" drill and there is a screw included, as pictured here in Z1's ad.

What would be useful but DJ can't seem to find is the installation guide Part# DI0007 that is specifically mentioned by part number in the fact sheet. Ugh.

OK, so what gets drilled out, the opening under the main jet I assume? And where does that screw go? I see no screw like it anywhere.

I looked at the needles and washers, and the washers at least look stock, exactly like the ones off my 79 GS850G. Pics below. I fear I may have some mish mash but maybe if it's not been drilled out (and needles are stock) it's a good thing, as I can baseline to stock and start over.

So, any gurus out there?