Seca Turbo Fuel Pump, What Works, What Does Not

Okay so as many of you know I have been running an R6 fuel pump for the 1999 through 2002 model. I have finally come to the realization that this fuel pump does not supply enough fuel on sustained boost. The carbs just flat run out of gas after 3 to 4 miles at 70 to 80 mph.

What I have discovered will work is the Airtex E8153 in line fuel pump. This is a 10 to 14 psi, 35 gph, inline fuel pump. I installed one this morning and went for an extended ride on the interstate and experienced no issues with getting adequate fuel to the carbs. This pump works very well with the existing bracket making installation a breeze.

Another pump that should work is the Carter P74017. It has identical specs. to the Airtex, but I have found at least around here that Airtex is carried by pretty much all the auto parts houses.

Anyway, maybe someone can benefit from this bit of information in the future.

 

Do you still have the original fuel pump? if so try soaking it in some kerosene for a few days. Then take the pump out of the kerosene and attach some leads to it. If it starts up great, if not then take a plastic mallet and give it some whacks to it and see if it starts spinning again. Try smacking it inall different angles and sides. If it starts spinning disconnect the leads and put on some tubes to and from the kerosene and let it run for a half hour or so... Dont smoke while doing this and keep a fire extinguisher close by and do this OUTDOORS!!. I have brought back more than a few fuel pumps by doing this.

Sean

 

will this pump flow enough for 30psi fuel pressure?
Reason being is that at 18psi boost, dont you need 30 or so fuel psI?

 

With the power up kit the bike is only at about 12psi. I would think 14-15 psi pressure from the pump would be adequate. Or at least it seemed to be. I have since sold this bike.

 

farmer, slowboattochina is right, the Turbo Seca isn't fuel injected, it's carbureted, so it doesn't require high fuel pressures. The pressure regulator maintains a 2 psi difference between the fuel pressure and the boost pressure, which is required to fill the bowls. Without a pressure differential, the bowls won't fill with fuel (and if your check valve isn't functioning, I suppose it would push air into the fuel system).

So you only need a fuel pump that outputs your max boost pressure + 2 psi.

 

i wonder what the stock pump's max pressure was.

So i am good for 12psi boost with this pump assuming max pump pressure 14psi..

So i may need to find a stronger one, i guess i can use this one for now..
Runing a gt1749v from a jetti tdi mounted upfront behind the front wheel on a yamaha maxim.

 

farmer, you might want to start a new thread in the Modification forum. The OP was concerned with what works on a Turbo Seca, which has pressurized carbs, along with other things that make the Turbo Seca work.

If you are modifying and normally aspirated Maxim, your set up is either going to need to be exactly the same as the Turbo seca (intake, engine, exhaust, turbo, carb,surge tank, TCI, knock sensor) , or, more likely, completely different. You will not be able to pressurize stock Maxim carbs.

I don't know how big that turbo unit is, but the stock one on a Turbo Seca is tiny and spins up to 210,000 rpm. Many on cars are larger and slower, i.e. you'll have significant turbo lag if it's not properly sized. Among other challenges that Turbo-ing a Maxim will take.

Someone was working on a Turbo Maxim a while ago. Do some searching and you might be able to find it.