Ironhead winding idle up excessively to start bike.

[73HEAD]

Originally Posted by doodah man

I never saw if you checked your intake manifold to head spigot alignment. Runs like crap until it heats up and seals well…? Those two intake o-rings should have an equal feeling gap all the way around on each side where manifold meets the heads. Are the heads and intake mani both o-ring style fitment??

Check this old post…
http://xlforum.net/forums/showpost.p...2&postcount=30

Just covering over the basics first.

i just read that. thanks. for such a seemingly simple setup, there certainly is a lot to it.
A over B divided by C equals D type thing. im in the process now of trying to fact find now.
thanks mate

[73HEAD]

Originally Posted by Iron Mike

Have you checked the slide and body condition of the Mik? Higher mileage TM’s were prone to slide wear resulting in air leak around the slide in a closed position.
Just a thought

thanks mate

[Ferrous Head]

There is a valid reason some people like Mikunis.

They are more "tunable" than Super B's. ie there are more adjustments the tuner can make.

And that''s great if you know exactly what your doing and are usingg an O1 sensor to do the tuning.

But it's also easier to get things wrong. Or to have a problem with them.

Rge Super B's can be made to produce nearly a flat line A/F graph with the simple addition of an air bleed hole tapped for a fixed jet. This gives you 4 circuits to play with.
And if you really feel the need ad an Accelo Bowl.

Actually, I'm thinking Branko built you a stroker ? Or helped with the build ?

A 40 mm carb is going to be too small on the top end if that's the case.

[73HEAD]

Originally Posted by Ferrous Head

There is a valid reason some people like Mikunis.

They are more "tunable" than Super B's. ie there are more adjustments the tuner can make.

And that''s great if you know exactly what your doing and are usingg an O1 sensor to do the tuning.

But it's also easier to get things wrong. Or to have a problem with them.

Rge Super B's can be made to produce nearly a flat line A/F graph with the simple addition of an air bleed hole tapped for a fixed jet. This gives you 4 circuits to play with.
And if you really feel the need ad an Accelo Bowl.

Actually, I'm thinking Branko built you a stroker ? Or helped with the build ?

A 40 mm carb is going to be too small on the top end if that's the case.

whatever branko did has given this ride of mine a lot of get up and go. it really does hammer. however, you are correct in saying that its easy to mistune a mikuni. i simply dont know what im doing and what i do do hasnt a pattern. im sure a lot of my problems are self induced. its a good learning curve for me though and i cant really destroy to much. thanks

[73HEAD]

Originally Posted by 73HEAD

whatever branko did has given this ride of mine a lot of get up and go. it really does hammer. however, you are correct in saying that its easy to mistune a mikuni. i simply dont know what im doing and what i do do hasnt a pattern. im sure a lot of my problems are self induced. its a good learning curve for me though and i cant really destroy to much. thanks

fb, do i need an insulator block/gaset to fit a super b to my ironhead? thanks

[brucstoudt]

neither. the Super B has an o-ring in the mounting flange.you're waiting 18+hrs. for a reply.i obliged.

[73HEAD]

Originally Posted by brucstoudt

neither. the Super B has an o-ring in the mounting flange.you're waiting 18+hrs. for a reply.i obliged.

thanks