Jump to content
SAU Community

Recommended Posts

I have been thinking of trying the voltage booster on my 044, rather than going twin pumps and putting more heat into the fuel. ( its already an issue on long drives.)

Anyone seen good results from them? How much more would i get out the fuel pump ifbits close to max flow now?

  • Like 1

i have run a Kenne Bell Boost A Pump since 2004. i find it an easy way to solve the fuel flow challenge of our thirsty motors. especially nice as it only juices the pump while in boost.

given the rotary needs about 30% more air to make similar output to a piston motor, it also needs 30% more fuel. in addition, it needs to run on the rich side at higher power levels and then there's E85 which requires 30 to 40% more fuel.

there are many ways to get it done and most work. you can do multiple pumps, or one monster pump or swap in what is currently the best 21st century single intank pump, the Walbro 9000262 (gas) or 9000267 (E85).

if you are approaching 600 rw on E85 the Walbro may be marginal.

at 13.5 V the pump makes 389 L/H

at 16.0 it makes 568!!!!!!! more than enough for more than 600 on E85.

at 16 V the pump is happy BTW.

of course life can't be that simple. Kenne Bell just changed their BAP to a 17 V minimum... which is too much for the pump.

/////////update: the 13.5 V base model is back by popular demand, see post 11 in this thread/////////////////

other than an FYI on this i would like to ask the board, someone who knows electricity better than me...

would it be feasible to run the BAP at 17 V and add some sort of resistor so as to end up at 16.0? if so please add the specifics.

up to how many volts can the walbro e85 pump run safely ? I thought 14.4v was the limit

I coppied the above from rx7 forum. Intersting that the walbro 460 will flow 568 l/hr compared to 389 l/hr at 13.5volt

Walbro 460 and id2000's

Not sure on injector duty

They would have plenty left u like the pump...

Ive been thinking of trying a walbro, but not sure they flow much more than the 044 at high pressures.

What power are you at with your set up and are you having fuel shortage issues with the pump/ fuel line size?

Ive been thinking of trying a walbro, but not sure they flow much more than the 044 at high pressures.

What power are you at with your set up and are you having fuel shortage issues with the pump/ fuel line size?

448kw @ 24.5psi on caltex eflex (E70)

Pump is at it's safe max limit

I rekon lines can flow more if I had more fuel flow

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Reasonably hard, although I haven't run it with the new Endless setup yet. The old brakes were F50's on 335mm rotors and the car did a 1:40.6 at Phillip Island which is a reasonable time, I'm seeing high 600s on the temperature paint. A guy I know ran the Endless fluid at WTAC without issues and he was doing 1:33's I think (Evo) with a 355/332 setup. I don't get out to the track as much as I'd like but we put the car on the hoist and spanner check every bolt and re-paint mark everything, bleed the brakes, change the fuel, check the coolant system and re-bleed blah blah blah before every event. Motorsport is expensive, RB's are expensive so a couple of hours before an event is time well spent. It's also a net time saving because if you can keep your RB from self destructing it saves you time in the long term!
    • Welcome Alice......hope you have a bit more luck from here on! What was done in the build?  
    • Hello! I'm new here, I have an R33 GTST that is currently being finished up! Last year was pretty rough, blew two stock turbos so I decided to build the car. Has been down since November, but I get it back next weekend!
    • Hello, I believe my car was imported to America in the 2000s by Kaizo Industries. Would anyone be able to help me find more info on them? I've only found all the basic stuff like that paul walker bnr34, them being shutdown by feds, just stuff like that. Any help would be much appreciated, thanks!
    • I am using Motec M150.  I am not working on the car myself actually.  My workshop is giving all these info, they are quite reputable in the industry and are very familiar with Motec and RBs and have done a few big setups with VCam and single turbo on RBs.  In fact, they built and tuned my engine from day one.  But they are stumped with my engine at the moment and cannot work out how come the compression is so low with the VCam. They told me that they have now swapped in some Kelford cams (without the VCam) and can achieve around 130psi compression and the low end torque is better, but now the engine is doughy as.  It boosts and peaks at more than 1000rpm slower, with twin HKS GTIII RS, it doesn't get full boost until over 5000rpm. I have always thought the VCam was a bit disappointing at the low rpm. To a point I had to ride the clutch a fair bit to get up a small hill from stand still.  That was when I had a clutch.  Now changing to a 8HP, I don't have that luxury and this problem has become a major issue. I am beginning to think the VCam never work since the day it was installed.  Maybe it was just sitting at the most advanced point, that is why it went good at top end but very ordinary at the bottom.  Therefore, with the help of the Holinger 6 speed and paddle shift, as long as it was moving, it drove pretty good.
×
×
  • Create New...