Carburetor Install Question...

[Oakley40]

I'm reinstalling my re-rebuilt D40 carburetor, but I don't know if there is a specific torque setting for the carb to intake bolts? or is snug and even the way to go?

 

[tweek99]

Snug and even should be fine

 

[bikersmurf]

Snug with a box end wrench is all I've ever done. X pattern and repeat till snug.

 

[tls3601]

What bikersmurf said..............

 

[65swb45]

nothing to add...but I love your sig line!

 

[honk]

Those carb mounting studs have a troubling way of pulling out of the aluminum manifold if too much oomph is applied to the mounting nuts.
Snug means not too tight; too tight pulls the studs up - be careful about it.

 

[Al Johnson]

Yes ! I can Amen to that - trying to figure out what I'm going to do with the stud I over tightend and weather I should put in a helicoil

 

[Spike Strip]

Aftermarket manual says 8-11 ft/lbs which is about right for a 8mm 1.25 thread bolt into steel. Into an aluminum manifold? Keep it on the low side. Does anybody use a torque wrench on carb flange nuts. Nope.

 

[skidplate]

Yes ! I can Amen to that - trying to figure out what I'm going to do with the stud I over tightend and weather I should put in a helicoil

I had to put in a helicoil on one of mine. I tried different types of lock tite first but none of that worked. Easy job, just tape over the manifold so you don't drop anything down there!

 

[Oakley40]

Thanks guy's snug and even it was. Appreciate the help!

 

[65swb45]

What you've all missed is that the D40 is a 1bbl carb. It either goes on a cast iron intake, or to a steel plate adapter above an aluminum manifold. And the studs are 10mm, not 8.

 

[Spike Strip]

What you've all missed is that the D40 is a 1bbl carb. It either goes on a cast iron intake, or to a steel plate adapter above an aluminum manifold. And the studs are 10mm, not 8.

You fossil.

 

[65swb45]

Pot meet kettle.

 

[Spike Strip]