Engine/Transmission (1998.5 - 2002) PROPER ORDER FOR UPGRADING YOUR ISB

[Bigsaint]

That's a good question, JR, but one I don't think anyone can easily reply to. I believe more R+D is needed for a intelligent response. Personally, I don't see the benefit of adding two pumps, one good one should be more than enough. The concern I have with two pumps is that you now have two to worry about, if either fails, can you still drive ??? Bottom line is any pump will probably fail at the OEM location, sucking fuel rather than pushing.



The question remains as to which pump will go the distance. I thought the Mallory 140 series was the answer, until my first died. I'm on my second now and I added a pre-filter to help starve off cavitation due to debris, but only time will tell. Other members are testing different types of Aeromotive and BG pumps, again, only time and usage will tell which is best.



I, too, am interested in Ted's thoughts on this subject. I will say that I don't recall any members complaining of a failure to date with the 2 pump set up, maybe it is the answer. More time and R+D is needed IMHO.



Scott W.

 

[redneckdr]

pumps

i know ted came back in and told me i should have a 100 gph pump. but, i used an aftermarket diaphragm pump (it is rated at 70 gph). it WILL pump through the oem pump. the OEM pump WILL pump through the diaphragm pump. don't have my gauges in yet, so can't speak to the pressure issue. been in place now 4k miles. i wired the pusher independent of the oem pump. fed a relay with switched 12v+, with a toggle switch. at filter change, hit the pusher switch, and bleed at the top of the filter--get air, then fuel. cycled the oem once, and she fired right up. time will tell... ... .

 

[Mopar-muscle]

redneck , when i called and talked to carter , the maker of the factory original pump and the maker of the pumps most are selling now , they told me to run the 7psi/70 gph pump as the pusher ... funny thing , when i called the tech line the next day i talked to the same guy , he spoke to an engineer and said to ditch the factory pump and locate their 15 psi/100gph pump back as close to the tank as possible ,and to forget 2 pumps . i'm running the 15psi/100 gph pump in the stock location since march of this year , over 21k miles , still working just fine and over 400hp to the ground .



redneck as far as switching your 70gph to a 100gph as suggested , i'll add this , the stock factory fuel filter on our rams only supplies about 45gph , you could put a 220gph pump in front of it , its still only going to flow 45 gph untill the higher gph pump either breaks or damages the filter element . you are fine with what you have .



jr2 , moving your pump back is fine , no need to buy another pump . the pusher pump is for guys that don't want to move the stock pump , but if you are going to cut the fuel line and add the wiring why add another pump ? just move one back . i moved a factory fuel pump back to the tank , fuel pressure at the VP44 increased from 0 psi to 3 psi . , the factory pump i believe is a 70gph pump . .

 

[redneckdr]

pump

John:

thanks for the response. i guess you might say i'm doing R & D. i assume i have the newer, more bullet proof transfer pump, but i wanted to see if the pusher in series with the oem would extend the life of the oem in its stock position. the diphragm pump that i bought was only $40. if this extends the life of the oem, even a year, it would be money well spent. i'm about to remove the flow thru filter i put in front of the pusher, and order a racor. gauges have to happen soon. then i will watch the pressures closer, and see what happens. i obviously don't want to "starve" the vp44, but it seems to work fine the way it is. hope the pressure gauges confirm when i get them installed.

 

[AggieJustin]

TTT

Just wanted to toss this back to the top for the newbies. I know there have been some issues for search, so I wanted to make sure everyone got a view of this thread.

 

[TxDieselKid]

ttt... .







Bunch of newbies so i thought i'd throw this back up.

 

[tntway]

GREAT idea kid... ..... TTT!!!

 

[redneckdr]

pusher pump

funny that this subject came up again... ... ..... andrew what have you been up to?

thought i'd better update the pusher pump subject. when the gauges went on, i found that the volume of the diaphragm pump INDEED was NOT enough. had to take it back out. have been running only with the OEM in the stock position now for 31K miles. upgraded the banjos early, and so far the pump is "hanging in there" with 13-14 at idle, 11-12 at cruise, and about 7-8 at WOT.

 

[TxDieselKid]

Re: pusher pump

Originally posted by redneckdr

funny that this subject came up again... ... ..... andrew what have you been up to?

Not much, haven't seen a post from you since Munice, how you been? Glad to see your back



Andrew

 

[redneckdr]

after muncie..........

went up to tom's (meers) grand opening in july, nudged the power some, and have basically gone "underground" to enjoy. Oo.

 

[MCummings]

TTT

BUMP



This thread has some descent info,, some is a *little* out dated, because of new products on the market.



But very usefull info.

 

[John Berger]

It Lives

This thread more than any other seems to have endless life. The thread from Hell, a BOMB'ers worst nightmare but every dream realized at the same time. It should just be called THE THREAD!!!



The THREAD from TED.



It's like a fix... ... ... . Oo. :{ :-laf

 

[David_VT]

Wow blast from the past!!

Wow,

When this thread was new, my truck was new... Takes me way back...



Almost makes me sad to remember driving with stock injectors, no VA (or later the HOT PE), those nice small tires, and most of all having not yet met those crazy TDR guys in San Jose... ...