How to modify direction of Mikuni carb fittings?

[96superjet]

Have a brand new pair of 46mm SBNs that I'll be using on a build and would like to know (prior to breaking anything) how to modify the direction of the intake and return fittings.

This is how they are oriented when you buy them.

Couldn't find a pic that represented the way I want them oriented, but you get the idea from this pic that it appears they can be "twisted".

Does it require heat to turn them? Nervous about melting gaskets inside.


Sent from my iPhone using Tapatalk

 

[Dartman]

dont just turn them, they will break off
clamp to the top return fitting in a vice mounted upside down
use a plastic hammer and hit on the top of the inlet fitting while holding and pulling on the carb body and will pull out the first fitting
now you can do the inlet fitting the same way
use green loctite and tap back in the way you want them pointed

 

[96superjet]

So essentially you just pull them out, reorient and tap them back in the way you want.

As you're pulling on the carb body, I suspect a little bit of twisting might help break them free.

Now I have to look up green Loctite. Only ever heard of blue or red.


Sent from my iPhone using Tapatalk

 

[96superjet]

Just read this article about diff between red, blue, green and purple.

http://us.henkel-adhesives-blog.com...ween-Red-Blue-Green-and-Purple-Threadlockers/

Section on purple says it's good for soft metals such as brass and aluminum and even mention carburetors. So, unless someone else weighs in with a better reason not to use it, I think I'm gonna give purple a try.


Sent from my iPhone using Tapatalk

 

[jetx]

I just read the article and the where to use purple and it's for low strength holding...it says it's used on carb screws, not fittings...where the fastener can easily be removed with same took as it was installed with. Probably geared towards preventing screws from vibrating loose.

I'd go with the green as recommended

 

[Pro-pulsion]

^^ +1
Green is meant for permanently fixing components in place. In small engines it is most commonly used on cylinder sleeves when installing them into the raw blocks. NEVER use red on anything aluminum. Red hardens to a point of crystallizing and will tear aluminum surfaces in circumstance that require twisting or torque ie: threading in fasteners, aluminum impellers, couplers etc. I have seen so many threaded holes get destroyed from people using red Loctite on bolts and screws. In fact, up here in Canada, the top experimental aircraft safety inspector has stated on a number of times during training seminars that if anyone were to ever send their Rotax engine to him for inspection or repair and he finds red Loctite has been used, he will send it back and not even touch it. It is great for mild steel or any other form of high tensile strength steel, but never use it on softer materials such as aluminum, brass, plastic, etc. For those, always use blue as the maximum strength unless you intend to fix the part in place and never remove it again.

 

[Dartman]

So essentially you just pull them out, reorient and tap them back in the way you want.

As you're pulling on the carb body,( I suspect a little bit of twisting might help break them free.)

Now I have to look up green Loctite. Only ever heard of blue or red.


Sent from my iPhone using Tapatalk

DONT TWIST THEM
they are partially splined
pull straight out
they are known to break off if you twist them