Ivanised Carbs........................

[RMT1983]

Good Evening guys!

Ive been fortunate enough to lay my hands on a cheap pair of carbs and with everything else that was on the bike I reckon they may be Ivanised.............

Is there any clear indicators in the carbs that I could be looking for?

Fingers crossed these are what I hope they are!!!

[Falcon 269]

Raise the throttle plates and check the pilot circuit bypass holes.  If one or two have been enlarged, the carbs are 'Ivanised'.

To find out which kit is installed, remove a float bowl and check the main jet.  If it says 127.5 it's a Full Monty job.  If the main is 122.5, that's a Slip On kit.

[nickodemon]

Check if the springs have been clipped and also check if the needles are tapered. The standard ones are almost straight.

[RMT1983]

what do you reckon mike?

[Falcon 269]

Definitely Ivan's Slip On kit. 

On a pre-03 late model onwards set of carbs.

[RMT1983]

What's needed to turn them into full monty carbs? is it just a change of main jet? or is there more that needs doing to them?

I've got some spare rubbers and airbox so that isn't a problem, just wondered if the full monty kit could be done easily?

[Falcon 269]

First, you need to mod the airbox lid and the intake stubs:

http://www.yamahafz1oa.com/forum/showthread.php?t=17064&highlight=Ivans+air+box+mod

http://www.yamahafz1oa.com/forum/showthread.php?t=47373&highlight=intake+boot+mods

With the airbox lid mod, ignore the first photo shown as it's wrong.  Post #16 shows the correct version.

You will also need a performance air filter (Pipercross are good) and Ivan's MB jet kit.  It has different needles and main jets.  This isn't just a jet swap job.

[nickodemon]

Are the carbs for sale?