Spike Kavalench

Oil cooler spacer bushings?

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My mechanic wants to install longer bolts to pass through both sides of the oil cooler, using 3 3/8 x 5/16” od .058 wall thickness bushings, in order to spread the load of the cooler and prevent cracking of the one tab that was originally attached to the cowl using 6 short bolts.

Is this a good idea and if so, where can I source those long bushings?

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Mine has the spacers.  I think they are standard AN hardware.  They are a PITA to install.

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Most installations use the long bolts.  For bushings buy aluminum tubing from Spruce.

Clarence

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