distributor shaft?

da89cup · 07-19-2006, 10:57 PM

I heard that you have to have the right amount of endplay in the distributor shaft between the oil pump & the distributor. Is this true? I'm building a 351W EFI, I just bought a new ProComp distributor, but I don't have the distributor shaft retainer ring. Is this really that big a deal? How much will the shaft move? thanks

Jeff Chambers · 07-20-2006, 07:09 AM

Yep, need at least .060" freeplay in the oil pump shaft to prevent binding. Last thing you want to do is bind the pump up. Also, don't put the pump shaft in without the retainer ring. There's nothing worse than pulling your distributor out and hearing that oil pump shaft 'tink' in the bottom of the oil pan!

mustangII460 · 07-20-2006, 08:24 PM

All motors are not created equal.

If im using a after market dist. I ink the gear up and run it a minute.

This tells me where my gear is sitting in relation to the cam gear. Nothng like having a gear burn up in a hundred miles. So far, MSD have been bad for gear placement from the factory.

You can measure your old dist for correct gear placement. Thats if it was ok from the factory.

Also as above you don't want your oil shaft in a bind, as well as the dist bottoming out.

07-19-2006, 10:57 PM	#1
da89cup Registered Member Join Date: Feb 2001 Location: edmonton, alberta, canada Posts: 55	distributor shaft? I heard that you have to have the right amount of endplay in the distributor shaft between the oil pump & the distributor. Is this true? I'm building a 351W EFI, I just bought a new ProComp distributor, but I don't have the distributor shaft retainer ring. Is this really that big a deal? How much will the shaft move? thanks __________________ 89 coupe, 351W, 351W heads, 30lb injectors, 190lph pump, 80 maf, 70 tb, ? cam, cobra upper, gt 40 lower, 4.10s, (14.1@98)

07-20-2006, 07:09 AM	#2
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: distributor shaft? Yep, need at least .060" freeplay in the oil pump shaft to prevent binding. Last thing you want to do is bind the pump up. Also, don't put the pump shaft in without the retainer ring. There's nothing worse than pulling your distributor out and hearing that oil pump shaft 'tink' in the bottom of the oil pan! __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

07-20-2006, 08:24 PM	#3
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Re: distributor shaft? All motors are not created equal. If im using a after market dist. I ink the gear up and run it a minute. This tells me where my gear is sitting in relation to the cam gear. Nothng like having a gear burn up in a hundred miles. So far, MSD have been bad for gear placement from the factory. You can measure your old dist for correct gear placement. Thats if it was ok from the factory. Also as above you don't want your oil shaft in a bind, as well as the dist bottoming out. __________________ Frank