FJ60 aisan carb secondary (1 Viewer)

[bobewans]

Hello m8s,
So I'm rebuilding my carb, and it looks like my secondary isn't opening up all the way.

See my video compared to pinheads.





It looks like the rod that goes into the secondary vacuum thingie is too long.

Any advice? Thanks

 

[Skeet]

The rebuild kits come with an incorrect diaphragm. This is the part you need.

 

[gregnash]

Plus I believe that the vacuum put on the diaphragm opens it up even more than just the mechanical actuation. @OSS @CaptClose @FJ40Jim

 

[LAMBCRUSHER]

okay, your concern is that by actuating the linkage, you do not see the secondary butterfly open fully? or that the butterfly doesn't open as far as Pin_heads does when he uses the linkage to actuate it?
the linkage is supposed to kick the butterfly open to a spec'ed angle only when held at wide open throttle. when this condition is met on a running engine, there is a vacuum signal generated in both barrels that is used to finish pulling the secondary butterfly open- you will NOT get the butterfly to fully open by using the linkage alone. when rebuilding, you are to set the "kick-open angle" of the secondary butterfly to a specific angle when the linkage is held at wide open throttle. you adjust the kick-open angle by bending the tabs on the linkage, as Pin_head shows in one of his videos. HTH

 

[FJ40Jim]

His concern is that the secondary pullrod is too long to allow full opening of the secondary.
Skeet posted the correct PN for the shorter diaphragm above.

 

[bobewans]

Thanks Jim, so does that diaphragm come with a shorter pullrod. Or does just having a shorter diaphragm allow the secondary to open up more (with the same pullrod)?

 

[Rustic76]

The correct rod is shorter and has a small bend at the end rather than being straight.

I just replaced mine with the NAPA one last week. You can see the slight hook at the end of the rod in the pic.

 

[bobewans]

Thanks, just ordered the part, waiting to pickup from the NAPA store.

 

[joecat66]

anyone know if the gasket by itself is available...anywhere

 

[NeverGiveUpYota]

anyone know if the gasket by itself is available...anywhere

Just that little square sorta? Cut one from a roll of thin material from an ace hardware. I might have one around, can’t put my hands on it right this second.... but if your gonna go to that extent, just grab a rebuild kit. The one from O’Riellys is a great one for $40.

 

[Spike Strip]

#405F - SECONDARY DIAPHRAGM GASKET

<a href="/aisan/aisan-carburetor-kit-15528/">AISAN Carburetor Kit #15528</a> - Part#405F - SECONDARY DIAPHRAGM GASKET

carburetion.walkerproducts.com

Vatozone or some mega chain Auto *may* be able to order .... But I'd just find a cheap kit on fleabay prolly work out the same.

 

[FJ40Jim]

The gasket is bonded to the diaphragm. A second gasket is not needed.