Calling MFI control links experts

[skinnerd]

Well I'm getting my MFI throttle bodies restored and I've come up against a "hurdle" with re-plating the control links.

Some of my links are ferrous (attracted by a magnet) and some are not.
Any idea of what the deal is?

My plater said he couldn't re-cad or zinc the non-ferrous control links as they dissolve in the plating solutions....that would be a bummer.
Seems like he already had a bad experience with this in the past.

Anyway, any thoughts on this and what it means would be helpful.

BTW....the engine and MFI components look to be original but who knows.
I didn't make note of where the 3 non-ferrous control links were located amongst all of them.

[Richy]

The aluminum rods go on the throttle bodies . You should have four . They can be anodized . I think Parts Klassic in Arizona sells reproduction aluminum rods , one of the few who reproduce the aluminum .

[1QuickS]

The aluminum rods were alodine finished, not anodized.

[chris_seven]

It would be interesting to get to the real detail.

The Aluminium Rods that I have seen on the 2.0 and 2.2 throttle bodies were all silver coloured which would seem to suggest that they were finished in Alodine 1000 rather than Alodine 1200.

Did the rods on the later throttle bodies change to steel or were they always Aluminium>

The other 4 rods are also of interest.

Does anyone have the correct lengths.

The parts numbers on the PET show as;

2 x 901.110.062.00

1 x 901.110.611.00

1 x 901.110.063.00

These numbers are used on the PET for both generations of Mag Stacks and the Plastic Stacks although I believe that on of the rods is a different length when used on 2.4 and 2.7 engines.

Also does anyone know if the other 4 rods were steel.

[edmayo]

Chris, to the best of my knowledge, the four throttle link rods were aluminum and all the others were steel. But sometimes by this point some aluminum may have had steel replacements to replace galled thread originals.

[1QuickS]

Info as I have it below. When I made these I added a little to the threaded length since thread engagement was a bit shy in my opinion; resulting in my rods being longer than OEM.

Item Name & rod length (OEM parts); Ball to ball length; OEM rod length
Butterfly rod; aluminum; 118mm; 88mm
Throttle link rod (two per engine); 149.5mm; 120mm
Pump rod; 114mm; 88mm
Bell crank rod (72-73); 304mm; 274mm
Bell crank rod (69); 275mm (TBD); 245mm

Ends were threaded: 17mm for LH threads & 21mm for RH threads (the extra length was for the wrenching nut affixed to the rod)

[chris_seven]

Paul,

Thank you,

I imagine that the two lengths shown are for the different throttle bodies and stacks?

or is it rod length and typical overall length

[1QuickS]

Dimensions are for center of ball to center of ball and then the overall length of the rod itself.

[chris_seven]

Thank You most helpful.