1980 gs450 carb kits!

[Greg]

Float needles. The smaller one is the original.

[Greg]

And because you guys love pictures. There she is tucked behind everything else in my tiny workspace. On the left 07 Vulcan 900 (Current daily driver) and on the right an 87 VFR 700 Interceptor. Weekend toy.

[pete]

Mate that fuel tap looks buggered. That disc was in about four different pieces when I pulled mine apart but the diaphragm was intact. Still didn't work though...

You can buy them new from Boulevard Suzuki for less than $80 which is good value I reckon... at least that's what I did anyway.

[koolaid_kid]

Update:

OBB sent me the wrong float needle..*facepalm* The one they sent me is about 1/16th of an inch longer...but everything else is the same. So, for the sake of my sanity, i just adjusted the float hight to match and put them back in. The piston now fires, but now...another problem has arose..

I pulled the petcock....fuel in the vacc. line. When I pulled it apart this is what I found. The aluminum disk thing is torn up...and the diaphragm has a VEEEERY small tear right on the edge in the middle....can i seal it up with something?..

First, you need to replace the petcock as you have realized. I can't use the word "buggered", but I can use "messed up". Z1 sells a petcock repair kit if you want to try to repair it. $22.60 plus shipping.
Second, since you have changed your float level setting due using the wrong length needle, you need to verify that the fuel level in the bowls are the same. This is critical to correct carb operation but is fairly easy to do, all things considered.
AFA your pics, I really like the Honda Interceptors. Nice looking bikes IMHO.

[Greg]

Does anyone know if there is an aftermarket one that will bilt up to it? If so link?

[pete]

Does anyone know if there is an aftermarket one that will bilt up to it? If so link?

Genuine from Boulevard Suzuki is less than $80, but Z1 have a bunch of aftermarket ones, not sure if they're straight bolt on though.

[ndaugbjerg]

Pete et al,
Dynajet makes stage 3 kits for '83 GS450's but not for my '81. Are they different carbs or whats the deal?
Thanks,
Niels

[Greg]

I cant really use a vacc. gauge...there is only one port on the left side...where is the other?

[pete]

Pete et al,
Dynajet makes stage 3 kits for '83 GS450's but not for my '81. Are they different carbs or whats the deal?
Thanks,
Niels

Completely different Niels, the '83's onwards had major changes to the carbs and ignition system amongst other things.

There's a UK E3305 stage 3 kit but apparently it's not suitable for the US... it's also not cheap.

Personally I'm going to keep trying to dial the carbs in with the stock needles and genuine Mikuni jets when I get some time to get back into it.

I cant really use a vacc. gauge...there is only one port on the left side...where is the other?

Yup you can, see your other thread for the answer

[ndaugbjerg]

Pete,
Thanks. Probably some environmental issues in play. I think you are right; Keep playing with it till you get it right. By the way, did you get my pics?
Niels

[pete]

Pete,
Thanks. Probably some environmental issues in play. I think you are right; Keep playing with it till you get it right. By the way, did you get my pics?
Niels

Yes I think so. I'm pretty sure the stock needles on the '80 - '82's aren't adjustable either just to make it that much more painful. We got lucky over here and got adjustable ones.

And nope, no pic's I'm afraid... nothing in my junk folder either...