My 3D printer and MFI linkage rod jigs.

[jpnovak]

Yesterday I was working to setup the linkage for a set of MFI throttle bodies. You know the drill, set the idle clearance, set the linkage to 114mm, etc. It has been a while since I had to go through CMA. I forgot what a pain it is to hold the linkage rod, open my calipers to near capacity try to position them and measure inside to inside on the linkage rod while simultaneously subtracting for the open diameter of the ball linkage. There has to be an easier way.

Since the last time I did this I bought a 3D printer. Time to make a jig. The process was rather simple. Draw a jig with a pair of 8mm posts on 117mm center. Support the posts so they will not break, and have a stable base. About 20 minutes later I had the CAD file. Then 8 minutes later I had this.



The process is simple. First check your linkage length. If it does not fit, open the jam nuts, shorten or lengthen the adjuster rod, snap the linkage in place, then tighten the jam nuts. Perfect adjustment every time. No toolbox should be without one.



If anyone wants one I can make them for a very reasonable price. Yes, the printer works well for custom logo key fobs.

Let me know if I can interest you in one or any other prototype parts.

[Mycar]

That's brilliant !! 3D printers are the future and I know nothing about them.. I've been tuning and balancing my engine over the last couple of days and this idea would have come in very handy.

What's more useful however, is that 117mm measurement, I hadn't heard that before. Is that ball centers or total link length ?

Bye the bye I listened to a discussion on the radio yesterday and they were saying that within 40 years we'll all have nano printers. Using water, dirt and acetylene gas we'll be able to print everything we need... food, houses, cars...friends. Anything that has atoms in it, we'll be printing it !

They said it would change society.

Regards, Mike.

[edmayo]

I hope that was a misprint Jamie, it's 114 mm center to center.

[2.5MFI]

117mm starting point on throttle body linkage? 114mm on pump rod would be the important one.

[jpnovak]

Yes, typo. 114mm is correct. fixed in original post. That's what I get for posting first thing in the morning.

[Biancaneve]

That's brilliant !! 3D printers are the future and I know nothing about them..

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[keith]

I like it! How much for a couple of them?

[bliebler]

How does that measure the 114mm pump control rod as the cups on that rod oppose each other?

[kenikh]

Cool, man. Cool.

[bliebler]

Yesterday I was working to setup the linkage for a set of MFI throttle bodies. You know the drill, set the idle clearance, set the linkage to 114mm, etc. It has been a while since I had to go through CMA. I forgot what a pain it is to hold the linkage rod, open my calipers to near capacity try to position them and measure inside to inside on the linkage rod while simultaneously subtracting for the open diameter of the ball linkage. There has to be an easier way.

Since the last time I did this I bought a 3D printer. Time to make a jig. The process was rather simple. Draw a jig with a pair of 8mm posts on 117mm center. Support the posts so they will not break, and have a stable base. About 20 minutes later I had the CAD file. Then 8 minutes later I had this.



The process is simple. First check your linkage length. If it does not fit, open the jam nuts, shorten or lengthen the adjuster rod, snap the linkage in place, then tighten the jam nuts. Perfect adjustment every time. No toolbox should be without one.



If anyone wants one I can make them for a very reasonable price. Yes, the printer works well for custom logo key fobs.

Let me know if I can interest you in one or any other prototype parts.

I see your post was quite awhile ago and I’m wondering if there jigs are available