gs450 re-build

[mlc216]

Fixed the wiring but even after switching carbs it still has no low end power. Guess I'll be working on carbs tomorrow night! yay haha

[mlc216]

Did some exhaust work tonight...

[Flaming Chainsaws]

I don't think anyone else has said it but that's a cool helmet! I love the 3/4 metalflake lids . What brand is it? I want one that has a low profile, that sits very low on your head.

We are going to need to hear the exhaust .

[mlc216]

I'm not sure what brand that one is... it's vintage and it's really low profile. It's pretty clean too. I also have two Arthur Fulmers and this is just the first one I found when I was going on the test ride haha.

So far I've only gotten one side of the exhaust done, so you'll have to wait until I get the other side done before you can hear it. I added a washer up where I cut the old massive exhaust pipe off, so that should provide a little back pressure and help out the lower to mid range...

[mlc216]

Got the other exhaust pipe fab'd up tonight and cleaned the carbs.... fired right up! Rode around the neighborhood and the mid range feels way better, but off idle is still really sluggish and feels powerless.

[pete]

Off idle? See how much throttle opening you have there, but it sounds like you might need to do some needle shimming.

[mlc216]

Off idle? See how much throttle opening you have there, but it sounds like you might need to do some needle shimming.

Pete,

I was thinking some needle shim adjustments would probably help too. The carbs I have on it now were "professionally jetted" for stock mufflers and pod filters. They came off the other gs450 that I bought for my wife a few weeks ago.

On another note, the "washers" that I added for baffles did wonders for the mid-range.

[pete]

Pete,

I was thinking some needle shim adjustments would probably help too. The carbs I have on it now were "professionally jetted" for stock mufflers and pod filters. They came off the other gs450 that I bought for my wife a few weeks ago.

On another note, the "washers" that I added for baffles did wonders for the mid-range.

That would make sense if it was giving you back pressure you were lacking before. Apparently no back pressure on these things means they run like crap.

I wouldn't be surprised if "professionally jetted" means they just stuck one size up main jet in, which is what I've read is the general recommendation for pods and stock pipes.

[mlc216]

Well I'm hauling the bike over to birmingham to a friends for the weekend. They are having an event at a local shop with a ride to follow... I'm going to work on tuning the carbs some more this evening to try and get a little better response out of it.

[mlc216]

Made a few changes... Tried as hard as we could to get her to the round up but a bum igniter module was only firing one coil. Turns out this was the "no power" problem all along... Oh well I will have it up and running in the next few days. Look for updates and more pictures to come later this week.

For now here are a few photos of my bike with stinson's hoard of yamahas..





And the whole group...

[mlc216]

Something was wrong with the clear I used the other night. It was foggy or something so I wetsanded and re-cleared it this afternoon.



I can't get over how much better it looks now! Not too shabby for rattlecan.

[mlc216]

Oh yeah I tested the igniter and signal gen. And the igniter was bad so I robbed the one from my wife's project gs450 and I've got beautiful blue sparks in both cylinders now

[Flaming Chainsaws]

Usually when the clear coat is foggy, it's because it's too moist or cold outside. The tank looks good! And glad you got that power problem fixed .

[mlc216]

Usually when the clear coat is foggy, it's because it's too moist or cold outside. The tank looks good! And glad you got that power problem fixed .

That's good to know... I know next to nothing about paint jobs haha. I like trying to layout stuff though... Gonna let the paint cure overnight and I'll ride it tomorrow after work if it's not raining hopefully.

[Flaming Chainsaws]

That's good to know... I know next to nothing about paint jobs haha. I like trying to layout stuff though... Gonna let the paint cure overnight and I'll ride it tomorrow after work if it's not raining hopefully.

You know nothing about paint jobs? That one you just did looks great!