RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-13-12 07:34 PM - Post#2214880
Hey guys, i'm still waiting on my shop manual in the mail, and i'm planning on doing some work here at home tomorrow.
I brought home the fuel pump to clean up, and was wondering how I an take it apart without messing it up, or if i should even take it apart at all.
The main seal where it is held together with 10 screws has a gasket with a tab sticking out, and that tab is pretty much rock solid. If I'm taking it apart anyway, should i go for new gaskets?
|
|
arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
|
04-14-12 04:04 AM - Post#2214954
In response to RumblingV8
if your going to use it yes get a rebuild kit. old gaskets fail with the new fuels. but if i where you i'd start out with new pump not that costly. save that as a spare
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
|
Willys36
Contributor
Posts: 495
Age: 64
Loc: Bakersfield CA
Reg: 07-08-09
|
04-14-12 07:08 AM - Post#2214994
In response to RumblingV8
Get a new pump. I assume your engine is a SBC V8 and you DON"T want to be replacing the pump once it is in the car. It's a real hassle. Even new pump rubber fails in the new gas. I (stupidly) bought a Chinese chrome pump on ebaY, the style you have that unscrews. The diaphragm failed in a couple months. I replace it w/ a parts store non-repariable unit (our Elky is more of a rod than a restoration) that has the bowl crimped onto the body. At least if it fails we have a warranty.
“We can't solve problems by using the same kind of thinking we used when we created them.”
Albert Einstein |
|
RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-14-12 05:32 PM - Post#2215141
In response to Willys36
Thanks for the input, guys.
I will probably just rebuild it and use it as is.
I dissected it today, and it was actually extremely clean (no gas or varnish at all), and it seems that the only thing that would really need replacing is the diaphragm thingies.
If it comes down to it and it really does fail constantly, then i might consider a new pump, but i'd rather not spend more money unless i have to.
|
echale3
Contributor
Posts: 156
Loc: Roanoke, VA
Reg: 05-12-10
|
04-17-12 10:13 AM - Post#2216155
In response to RumblingV8
A new block-mounted mechanical fuel pump for a SBC is about $17 at any parts store. You won't be out much if the one you have starts going south on a regular basis....
|
arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
|
04-17-12 11:07 AM - Post#2216164
In response to echale3
A new block-mounted mechanical fuel pump for a SBC is about $17 at any parts store. You won't be out much if the one you have starts going south on a regular basis....
i he get fuel dumping in to oil pan.he will wish he spent the $17.00 for a new pump. the oil and filter will cost more
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
Edited by arnieg141 on 04-17-12 11:08 AM. Reason for edit: No reason given.
|
echale3
Contributor
Posts: 156
Loc: Roanoke, VA
Reg: 05-12-10
|
04-17-12 11:51 AM - Post#2216174
In response to arnieg141
i he get fuel dumping in to oil pan.he will wish he spent the $17.00 for a new pump. the oil and filter will cost more
Yeah, you got that right! I can tell y'all a few stories about trying to save a few bucks and winding up spending more to fix the problems that caused than I would have if I'd have just ponied up the cash when I should have! 
Edited by echale3 on 04-17-12 11:52 AM. Reason for edit: No reason given.
|
RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-17-12 05:09 PM - Post#2216283
In response to echale3
Well i suppose the general consensus is that i should get a new pump, but is there any reason that the original will not perform as well if it's rebuilt...? What would be failing so much that it would cause problems?
|
arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
|
04-18-12 03:54 AM - Post#2216410
In response to RumblingV8
more guy have tore down motors and rebuild them or sold the car for smoking .and all it was was gas getting in oil from bad fuel pumps.they get hair line crack inside or diaframe goes from age spring gets weak.
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
|
prgm_mgr
Member
Posts: 459
Reg: 07-06-05
|
04-18-12 04:18 AM - Post#2216414
In response to RumblingV8
It also depends on your end goal.
If its restoration, then I'd rebuild the one that came with on the car. If not, then you have other options.
Mark
|
RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-18-12 04:28 PM - Post#2216624
In response to arnieg141
Rebuild kits have those parts. (spring, diaphragm)
Also, yes it's a restoration. I was just curious as to why i would opt for a new pump when rebuilding it seems like just as good of an option.
|
prgm_mgr
Member
Posts: 459
Reg: 07-06-05
|
04-19-12 12:14 PM - Post#2216940
In response to RumblingV8
Hi
One reason for a new pump is some guys like to put the pump in the tank like modern cars have so you don't have to pump the pedal to prime it. The old cars suck the gas from the tank, the new send from the tank so you have instant gas.
My car sits for 2 - 4 months at a time in the winter, battery on a trickle charger from harborfreight. I have an original pump that I rebuilt. I pump it a few times, crank it, pump it a few more, crank some more and it starts right up.
For what its worth.
Mark
|
echale3
Contributor
Posts: 156
Loc: Roanoke, VA
Reg: 05-12-10
|
04-19-12 01:12 PM - Post#2216958
In response to prgm_mgr
Hi
One reason for a new pump is some guys like to put the pump in the tank like modern cars have so you don't have to pump the pedal to prime it. The old cars suck the gas from the tank, the new send from the tank so you have instant gas.
That's not really what I and others were getting at--what you are talking about is an in-tank electric pump. The rest of us are talking about a new manufacture block-mounted mechanical pump--the same basic type of pump as came on the car originally.
Electric pumps do just what you said--they push the gas forward and are less prone to vapor lock as a result. Not all electric pumps are in-tank types, though, some mount outside the tank. This talk of electric fuel pumps, however, is beside the point.
What we were cautioning against is the possibility of the mechanical pump rebuild kit not faring well with ethanol gas. It may be that the new diaphragm and such in the rebuild kit will work fine with it, then again it may not. If not, then you'll be out extra money for a full on oil/filter change, not to mention the possibility of doing some damage to the engine internals if you don't catch it in time.
A new block-mounted mechanical pump comes with a warranty and the rubber bits inside are guaranteed to work with ethanol fuel. The only other difference is that the new pump is new and the other one's theoretically original to the engine. Unless you have all the service records for the car from the time it was driven off the new car lot until now, there's no guarantee that the pump that was on the block is the original.
Edited by echale3 on 04-19-12 01:13 PM. Reason for edit: No reason given.
|
RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-19-12 07:53 PM - Post#2217100
In response to echale3
We do actually have all of the service records (i think), and we even have the original sales receipt. I will go check.
|
arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
|
04-20-12 04:19 AM - Post#2217164
In response to arnieg141
more guy have tore down motors and rebuild them or sold the car for smoking .and all it was was gas getting in oil from bad fuel pumps.they get hair line crack inside or diaframe goes from age spring gets weak.
ramblin . a rebuilt may work fine!! but it's still old metal and as cheep as a new exact looking one is thats why i say start with new.rebuild your old and put in your small parts box with belts /plugs/ wires that you keep when you put new parts on. for emerginces you should carrie in trunk.seen to many of are old cars on runs fail alot with fuel pump mostly rebuilts .you may be lucky and never have a problem and i hope you don't good luck no matter how you go..just working on these cars for 50 plus yrs. this is how i would go
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
|
prgm_mgr
Member
Posts: 459
Reg: 07-06-05
|
04-20-12 01:17 PM - Post#2217307
In response to arnieg141
True, there's something to say for having a spare in the trunk.
Mark
|
arnieg141
Dedicated Enthusiast
Posts: 6084
Loc: nj
Reg: 10-06-08
|
04-20-12 02:41 PM - Post#2217334
In response to prgm_mgr
mark on all the older cars i've had. i carry a box of used good spares wraped in plastic bags.water pump/all the old tune up parts and wires/belts/fuel pump.and a working carb even if it's not 100%
| GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison |
Edited by arnieg141 on 04-20-12 02:42 PM. Reason for edit: No reason given.
|
RumblingV8
Forum Newbie
Posts: 95
Loc: Allentown, PA
Reg: 03-11-12
|
04-21-12 10:35 AM - Post#2217571
In response to arnieg141
I suppose i will do both then.
Can anyone recommend a good pump, then?
|
|
Gain extra benefits by becoming a Supporting Member 
drtyler (4)
