Busted7

I wish some one with first hand experience would speak up!
My thoughts are the intake of the pump is prone to slow the flow much more than the supply side so you need to be very careful about starving the volume with a filter. Thats why the stock filter sock is so large and has a length to it.

Carlos Iglesias

iTrader: (6)

Bingo.


I'll admit that I haven't read the entire thread. However, from what I have read, I agree that it's CRITICAL for pump performance to ensure that the pump intake has as minimal a flow resistance as possible. As far as I can tell, all fuel pumps are designed with minimal scavenge (i.e. suction) capability. That's why there are all of the cautions and recommendation for mounting in positions where they do not have to pull the fuel at all. I do not have empirical data, but suspect that slight blockage on the scavenge/inlet side correlates to significant performance degradations on the pressure side output.

In other word, make sure the pump filter and location NEVER restricts the fuel supply.

janrx7

I am currently pushing 429whp @ 15psi lookin for 500whp with sunoco gt plus race fuel. I have a rewired supra pum
850ccx4 injectors at stock pressure. I know I need 2 1600cc secondaries, a fuel rail, a fuel pressure regulator,
Some resistors.what else? Do I need an addition pump? Do I need to place the stock fuel lines for some braided
Ones? Do I need to replace my 850cc primaries? Where can I buy the injectors and rails for cheapest?

Dudemaaanownsanrx7

iTrader: (23)

You can keep the 850 primaries. The lines for the new rail will either need to be braided or you can use hose barbs and fuel injection hose. There is also a banjo adapter to use the stock primary to secondary line with an aftermarket rail. You don't need to replace the lines from the tank to the engine bay. Rewire your pump if not done already. 40 psi base pressure should be fine.

bewtew

iTrader: (7)

get a better fuel system.. 850/1600 inj. i run dual intank rp pumps and they work very well.

janrx7

Ok where can i buy the cheapest:

-2 1600cc bosch injectors
-1 Secondaries fuel rail
-1 Aeromotive fuel pressure regulator (Recommend Aeromotive, Sard or another brand?)
-banjo adapter?

TwinCharged RX7

iTrader: (14)

I got all of my stuff used on the forum. Go look up Rizwan - screen name is Str8ryd - he always has fuel systems for sale for some reason. Always at good prices. Just make sure to send your injectors out to be cleaned and flow tested - KG Parts is very good at this and very helpful over the phone if you have any questions during the install as well (even when you aren't using their products). Its just a good rule of thumb to have them cleaned and tested, not that he'd sell you bad ones, but there's always a risk of damage whenever they are out of the car b/c they have such small pores, one little spec of dirt can mess them up.

janrx7

Thanks for the info. Has anyone tried the rx7store ultimate fuel system? It saids that it comes with the fuel lines, Are they braided?

TwinCharged RX7

iTrader: (14)

I'm pretty sure they are braided, i have the kg parts primary and rotary extreme secondary, both have braided lines, Str8ryd's usually have all braided lines as well, thats how mine came, already fitted too.

hondahater

iTrader: (2)

I'm not sure why more people don't use the weldon 600a and 1100a inline fuel pumps. The 600a is supposedly much quieter than the Bosch and the Walbro but it uses less amperage and it can be mounted anywhere. In fact the instructions say the best place to mount the pump is with the sticker facing where people can see it As for flow it has the capabilities of an 044 and the price tag is 300-400 bucks depending on what website you buy it from. The size is about 1 1/2 x's the size of the 044 and all the internals are all metal so the thing weighs close to 5lbs. I just changed mine out today with this unit so I'll let you guys know how it goes.