Fuel filter placement

[yard dog]

Does it matter which side my fuel filter is located with a mechanical fuel pump ? should it go before or after the pump or does it matter. Can you have two one before the fuel pump and after ? info 460 ford with a holley 600 cfm mech secondaries , double pumper . In line filters is what Iam useing

 

[floatn turd]

I run a mechanical and an inline filter.

A) If you have not put it all together yet and its new stuff, I would say: stay away from the mechanical. I personally have had more problems than it solved. (Priming the carbs when no fuel was in them and running out of gas. That kind of thing)

But thats just me, that being said, it does run perfect otherwise.

B) I ran my inline filter right after the pump. But I don't really think it matters either way. I have two holly 750s', blower, superchiller all that crap. You can put two if you want, certainly can not hurt in the slightest. Clean fuel is a good thing.



FT

 

[yard dog]

I run a mechanical and an inline filter.

A) If you have not put it all together yet and its new stuff, I would say: stay away from the mechanical. I personally have had more problems than it solved. (Priming the carbs when no fuel was in them and running out of gas. That kind of thing)

But thats just me, that being said, it does run perfect otherwise.

B) I ran my inline filter right after the pump. But I don't really think it matters either way. I have two holly 750s', blower, superchiller all that crap. You can put two if you want, certainly can not hurt in the slightest. Clean fuel is a good thing.



FT

A )= you bring up a point about the mechanical pump set up that I didn't think about , does take a while to prime the carb when no fuel is in them . My mechanical pump needs to be replaced , so I when change fuel pump this time I think will stay from the mechanical set up . tks

 

[BoatCop]

Always put an in-line filter before the pump. You don't want any crud from the tank going through the pump.

Most carbs have an inlet filter anyway for fine filtering..

 

[floatn turd]

A )= you bring up a point about the mechanical pump set up that I didn't think about , does take a while to prime the carb when no fuel is in them . My mechanical pump needs to be replaced , so I when change fuel pump this time I think will stay from the mechanical set up . tks

I had to install a "fuel check valve" and rig up a little 'turkey baster bulb' with some hose going to the fuel tank to prime the carbs if empty, cause it would drain the batt if I didnt.

So ya, if you can, go electrical. I will go back when mine fails.

Good luck man.

 

[brendellajet]

I run a mechanical. As mentioned, priming it sucks. I have a fuel safe syringe I picked up (pep boys I think) and I use that to fill the bowls at the start of each trip. Funny thing is, for the first couple years, I wouldn't lose a whole lot of gas, bit now it drains or evaporates to somewhere.

Would be cool if I could prime with an electric pump and then run off the mechanical, just not sure how to plumb it.

 

[yard dog]

I run a mechanical. As mentioned, priming it sucks. I have a fuel safe syringe I picked up (pep boys I think) and I use that to fill the bowls at the start of each trip. Funny thing is, for the first couple years, I wouldn't lose a whole lot of gas, bit now it drains or evaporates to somewhere.

Would be cool if I could prime with an electric pump and then run off the mechanical, just not sure how to plumb it.

Ok what are the pro and cons mechanical vs electric pump and the placement of filters on both ?

 

[Maestro]

Carbs should be drained for long term storage, prevent tarnish/gunk.
I use these little puppies to fill bowls up for initial start...
http://www.harborfreight.com/pack-of-3-8-oz-storage-bottles-with-twist-caps-66170.html

 

[floatn turd]

Ok what are the pro and cons mechanical vs electric pump and the placement of filters on both ?

They will both motor your ass down the river. One just takes a little more work to get going if your carbs are empty for what ever reason.
Filters: Put one b4 and after if you want, as long as you have a good quality filter somewhere in the mix, you cant go wrong IMO.

 

[ka0tyk]

sierra filter / water separator to catch the big chunks with shutoff valves before the pump and an inline smaller micron filter after the pump before the carb.

mechanical has less stuff to go wrong, electrical is convenient if you ever tinker around and remove the carb, etc. i had an electrical on my 18 jet but it was noisy and one more thing to have to worry about. it was also nice to have after the season was over to drain the tanks. just unhook the hose from the carb and run a longer one to the car and turn the ignition on. instant fuel drain into the truck at the end of the season.

 

[72Hondo]

Ok what are the pro and cons mechanical vs electric pump and the placement of filters on both ?

Couple thingls to remember with Electric pumps;

? Not great at sucking gas, they were designed to push. Say if your running saddle tanks and your pick up is at the top, when you get low on gas 1/4 or so you will start hearing the pump cavitate.

? With electric pumps its best to mount them near and below the gas tanks. If it's above the tanks your fighting gravity and the pump is not all that great at sucking (Holley's anyway).

? I always ran a fuse, some run C/B or saftey switches.

Me personally, its just more shit to go wrong. I ran an eletric one for years and always had problems with them. I switched to mech and never looked back, yea the priming thing is a pain in the ass but thats why i always go over the boat a day in advance before we hit the lake.

 

[DaveC]

this....:thumbsup

sierra filter / water separator to catch the big chunks with shutoff valves before the pump and an inline smaller micron filter after the pump before the carb.

mechanical has less stuff to go wrong, electrical is convenient if you ever tinker around and remove the carb, etc. i had an electrical on my 18 jet but it was noisy and one more thing to have to worry about. it was also nice to have after the season was over to drain the tanks. just unhook the hose from the carb and run a longer one to the car and turn the ignition on. instant fuel drain into the truck at the end of the season.