Gt550 jetting

Getting your blazingly fast Suzuki powerplant to perform even better!

Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan

Post Reply
kawonda750
On the main road
Posts: 106
Joined: Wed Nov 28, 2012 4:48 pm
Country: canada
Suzuki 2-Strokes: 74 gt550, 88 Yamaha FZR400, 2019 Kaw Z900RS
Location: penetang, ontario

Gt550 jetting

Post by kawonda750 »

I am kind of surprised to see that the centre cylinder on the GT550 L has a smaller main jet. I thought that a leaner jet burned a little hotter. Does the centre cylinder not cool as well due to the front wheel blocking air flow? I would expect to see a bit bigger jet to remedy this.

I guess that I have it all backwards, as usual...
User avatar
jabcb
Moto GP
Posts: 4232
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: Gt550 jetting

Post by jabcb »

Am not a carb expert, but…

The center cylinder exhaust is different.
When switching to 3-into-3 exhaust, the jetting for the 3 cylinders is typically the same.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
kawonda750
On the main road
Posts: 106
Joined: Wed Nov 28, 2012 4:48 pm
Country: canada
Suzuki 2-Strokes: 74 gt550, 88 Yamaha FZR400, 2019 Kaw Z900RS
Location: penetang, ontario

Re: Gt550 jetting

Post by kawonda750 »

Ahh. Never thought of that. Thanks.

I am sure that I will come up with more dumb questions though...
Post Reply