| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
10-01-2023, 11:42 AM
|
|||
|
|||
Packing a new mech fuel pump with wheel bearing grease ?
When installing a new mech fuel pump is it a good practice to pack the cavity where the pump arm protrudes with wheel bearing grease ?
What benefit? Any harm ? Tks. |
|
#2
10-01-2023, 11:51 AM
|
||||
|
||||
|
if anything i would put assembly lube on the pump arm.
|
| The Following User Says Thank You to i82much For This Useful Post: | ||
|
#3
10-01-2023, 11:52 AM
|
||||
|
||||
|
wheel bearing grease is solid at room temps ... seems like it would clog up something important.
|
|
#4
10-01-2023, 11:57 AM
|
||||
|
||||
|
I would not pack that thing. Put some motor oil on the cross pin, put a layer of grease on the flat of the arm that contacts the eccentric, and bolt it up.
|
| The Following User Says Thank You to PunchT37 For This Useful Post: | ||
|
#5
10-01-2023, 12:36 PM
|
||||
|
||||
|
Bad idea to pack the fuel pump as proposed.
Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
| The Following User Says Thank You to Tom Vaught For This Useful Post: | ||
|
#6
10-01-2023, 01:54 PM
|
||||
|
||||
|
You are thinking oil pump, not fuel pump. Some older engines benefit from the oil pump being packed with grease so it will prime. This is generally helpful when the pump has a long pickup, or the gears are not submerged in the engine oil in the pan. Some Pontiac builders do pack the pump, I don't personally think its a necessary procedure
|
|
#7
10-01-2023, 02:54 PM
|
|||
|
|||
|
Oil pumps, pour some Lucas into her. Instantly primes every time.
But it sounds like the OP is indeed talking about a fuel pump with "protruding arm". And there is a "cavity" on that arm. But it is on the wrong side so grease there would do nothing but end up in your oil. |
|
#8
10-01-2023, 03:31 PM
|
||||
|
||||
|
Quote:
Benefit? Zero. Harm? Possible damage to the pump and eccentric due to grease not being compressible. For sure damage to the diaphragm from the petroleum base in the grease rotting the rubber in short order.
__________________
Jeff 
|
| The Following User Says Thank You to geeteeohguy For This Useful Post: | ||
|
#9
10-01-2023, 07:37 PM
|
|||
|
|||
|
Its a crazy idea, don't do it.
But that diaphragm is made to hold up to gasoline so grease is not going to break it down. |
|
#10
10-01-2023, 08:34 PM
|
||||
|
||||
|
Quote:
|
|
#11
10-01-2023, 11:10 PM
|
||||
|
||||
|
I do know some Chevy guys use grease on the pushrod so it stays up enough the slide the arm in.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
| The Following User Says Thank You to Skip Fix For This Useful Post: | ||
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
