Jet change (thanks Sean)

[tvmax]

Sean,
First I got the jets. The 150's are a larger diameter and will not fit thru the bowl jet access plug. No real biggie though. I put in the 147.5's. It flat screams. The Old style Hindle 4-1 and K7N filter love it. I still have to sync the carbs as the domestic goddess decided to move my carb stix and they now have no mercury. I am hoping to find some here locally. It is just not smooth off idle untill it gets a little throttle. But when you crack it open it hauls. Would you recomend going to 150's on a stock bike or leave it with 152.5's?

Thanks
Jim

 

[one2dmax]

Even stock bikes can benefit from a slightly smaller main. I am not sure why the 150's won't fit through? They should have the same head size and if they are close maybe a little sanding will work.

You may need a little more A/F screw adjustment and or carb sync to get the smoother idle.

There is a thread on here somewhere on how to make your own carb sync tool which will work for you.

Sean

 

[vmaxinID]

When I went searching for mains they came in 2 head sizes: Fat and skinny.

Same thread and size, just large and small head.

 

[KJShover]

When I went searching for mains they came in 2 head sizes: Fat and skinny.

Same thread and size, just large and small head.

+1, when I changed to my 150's the shop originally gave me fat's too. I had to tell them small head.

 

[one2dmax]

Yes, small round head. I asked him because I only have a few of the large head ones on hand for my old Yamaha Seca Turbo.

Sean

 

[Dreamster66]

ho much do the 150's go for?

 

[one2dmax]

$10 a set for most sizes. I may be running low on a few sizes but try to keep 147.5's and up on hand.

Sean

 

[tvmax]

The 147's are small but the 150's are large. If you want them back for your Seca let me know. I think they will work for me just have to remove the bowls for changing. I hope to not have to do that often.

Jim

 

[one2dmax]

Probably not worth the shipping to get them back. You should be able to machine the heads down without effecting the function of the jet. I am sorry I sent the wrong ones. if you want the other set let me know.

Sean

 

[tvmax]

Sean,
I will eventually be sending you some other things and may throw them in with it. It is not a problem as the 147.5's worked with the Hindle. That is the one I am riding now. Just got to get the carbs sync'd.

Jim