Questions & Answers
ow do you tell the difference between the 040 and the 070 timing gear oil jet?
Willys Jeep Parts Tech:
The port oil size make the difference.
The port oil size make the difference.
Is there any reason I can't plug the .070 hole and drill a .040 hole in it's place?
Willys Jeep Parts Tech:
We do not advise making those sort of modifications.
We do not advise making those sort of modifications.
The engineers at Willys became concerned about the No. 1 main bearing being starved of oil; their solution was to decrease this orifice size to bump the pressure and delivery to that bearing. Some say unnecessary, some say an needed upgrade.
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This is the later one. IE smaller hole - more pressure. This is the preferred jet by most people.
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