MoparFins

Techical Discussions => Tech- - FUEL => Topic started by: attkrlufy on June 09, 2009, 04:22:08 AM

Title: Fuel pump replacement
Post by: attkrlufy on June 09, 2009, 04:22:08 AM
So I've just taken the fuel pump out - I figure while I'm doing all this other work to the engine why not replace it?  I mean, who knows when I'll have such easy access to it again?  Plus it's got near 100K on it.  The timing seems right.

(http://farm4.static.flickr.com/3373/3610871246_bde673a4cd.jpg)

I have a few questions, though. 

1) Do I need to lubricate the arm of the new pump before installing it?  When the old one came out it was pretty greasy.  Is that some kind of special lubricant or was that just engine oil?

2) What type of new pump should I get?  I want a strong, robust pump that's not going to break easily.  But I don't want to get the wrong pump.  I don't think I need a "racing" or "high volume" one, you know?  Or do I?

Any thoughts?


Title: Fuel pump replacement
Post by: Butch Houghton on June 09, 2009, 07:53:47 AM

Yeah not a bad idea while you're there.     If I'm at home I use Moly paste on the arm.   Good ole STP would work fine too or just motor oil.     If I have to change one on the road I've just stuck em' on with nothing & they're still okay.   Anything you put is gonna help.

Stock replacement is fine,  just pay a bit more for a good one.   A lot of the stores have different grades.

The "grease" you saw is most likely sludged oil @ 100K.  Mileage will do that.


Butch

HemiFury2009-06-09 12:55:18
Title: Fuel pump replacement
Post by: Steve on June 09, 2009, 07:56:20 AM
If you're on the road, pull the dip stick out a few times.
I see Butch has never been stuck.  LOL
Title: Fuel pump replacement
Post by: Butch Houghton on June 09, 2009, 08:23:24 AM
Nope,  I fix mine so they don't break!   So there.

You can also stick your finger in the fuel pump hole & get some  oil off the walls in there too.

It just isn't that big of any issue.

Butch


Title: Fuel pump replacement
Post by: Steve on June 09, 2009, 09:41:26 AM
True. . . .  I had to bust you for something
Title: Fuel pump replacement
Post by: Brian on June 09, 2009, 12:20:44 PM
I've never lubed the fuel pump arm before installation...never even occured to me to do it.
 
I'm still running the same fuel pump that's been on the 440 for probably close to 20 years...if it aint broke don't fix it!
 
 
Title: Fuel pump replacement
Post by: attkrlufy on June 09, 2009, 03:30:34 PM

Quote from: HemiFury
Yeah not a bad idea while you're there.     If I'm at home I use Moly paste on the arm.   Good ole STP would work fine too or just motor oil.
"Moly paste?"  Whazzat?  And the only STP I know of is a fuel additive.  Do they make lubricants, too?  Arrgh!  I'm such a rookie at this.  (http://www.moparfins.com/forum/smileys/smiley36.gif)

Quote from: HemiFury
Stock replacement is fine,  just pay a bit more for a good one.   A lot of the stores have different grades.
Any models come to mind?  For instance, other than $40, what's the difference between this pump:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY-12-838&N=700+4294908128+4294840106+4294888795+4294925239+4294908115+4294925054+4294891547+115&autoview=sku (http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY-12-838&N=700+4294908128+4294840106+4294888795+4294925239+4294908115+4294925054+4294891547+115&autoview=sku)

and this pump:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY-12-360-11&N=700+4294908128+4294840106+4294888795+4294925239+4294908115+4294925054+4294891547+115&autoview=sku (http://store.summitracing.com/partdetail.asp?autofilter=1&part=HLY-12-360-11&N=700+4294908128+4294840106+4294888795+4294925239+4294908115+4294925054+4294891547+115&autoview=sku)

Do I really need the extra 40 gph the second one provides?  That seems like a lot.  Is the 2nd pump a racing pump?



Title: Fuel pump replacement
Post by: Stan Paralikis on June 10, 2009, 02:38:49 AM
All you need for your motor is a name brand stock OEM replacement pump.
Carter or ACDelco. They'll last until the car collapses from rust and they're under 30 bucks at your local parts store.  Why pay for shipping? 
Title: Fuel pump replacement
Post by: Butch Houghton on June 10, 2009, 06:36:01 AM
Exactly!   no need ordering a stock pump,  just run down to the local parts house & get a decent one.  Just don't get the cheapest.

Moly paste is an assembly lube for motors.    STP oil treatment has been around longer than I have!   Real thick lube & good for protection on initial fireup until oil circulates good.   Check the parts houses for it.   Course plain old engine oil will do too!

Like Brian said he's  never used anythng & not had a problem.    So anything you put on the arm is just good insurance.

Butch


Title: Fuel pump replacement
Post by: Snotty on June 10, 2009, 09:40:34 AM
Moly paste is a good idea, and a definate if this was a rebuild.  It allows for lube before oil pressure comes up.  A new motor is totally dry before it's first run.  Since your motor is a runner, there will already be presence of oil on the pump cam.
 
Albeit, I always lube one before I install.  As I said, it's a good idea, even if unneccasary.