Re: Fuel pump insulators

Posted by Fish'n Jim On 2014/1/16 19:34:09

After thinking more about this I find I misread the post, it's the fuel not the oil pump but the analysis is ok. I checked on oil temps and the recognized approach is between 15-30 deg over the coolant. So if it's a 160-180 stat, you're safe at 190-210F operating design and with a 7 lb cap it's 250F max., The pump is external and fuel is flowing so some of the heat will go out as a safety margin.
I couldn't figure out why those were in there when I rebuilt my pump. I don't see any real reason for them, except the casting hole was larger than the bolt used. Must of been someone's idea of quieting or vibration isolation/dampening.
These type isolators should be available, but thankfully, that's one I didn't need to run down, so no help there. There's some fuel pump rebuild guys out there you might try.
Viton also comes to mind but probably not in this shape.