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anyone changed a heat exchanger out yet? Curious if your reinstalling with hammer rivets or pull rivets? If Anyone has used hammer rivets are they just flat or are they tapered.

Thanks

Mike Lynch
 

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If at all possible “buck” rivets are best since the both pull tight and expand in the hole. However it requires at minimum a specific tip for an air chisel and a bucking bar ( chunk of metal) but the river gun vs. air chisel has a progressive trigger allowing you to start slow and accelerate. A 3/6” aluminum buck rivet will out perform a 1/4” steel pop rivet in most situations.
 
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