Jump to content
HybridZ

Fuel delivery question...


auxilary

Recommended Posts

so, I don't have an rb series motor, but you know what? THere isn't a forum for wankel swaps :) so I'm going to ask here since you guys have to run high pressure fuel delivery for turbo.

 

Any recommendations for a high flow rate external pump to use with the stock tank? I need a decent not-so-expensive pump to produce about 250-300 lph for the rotary. Unfortunately, US manufacturers don't make a large variety of external electric pumps designed for FI systems. The high flow rate ones made by holley and msd operate between 7-14psi, which is obviously for a carb'd application. Their FI variety is pretty much all intank design (circa 5.0 mustang).

 

Any recommendations and how much am I looking to spend?

 

Danke,

-alex

Link to comment
Share on other sites

How about this one:

msd-2225.jpg

 

3/8 in. inlet, 5/16 in. outlet, in-line, high pressure, electric, fuel pump

 

Multiport EFI systems require a stable fuel supply to maintain the best performance throughout the engine's rpm range. This high pressure and high flow fuel pump features a roller vane pump mechanism, which is extremely resistant to clogging and jamming. The pump mounts in-line (out of the tank) with two supplied cushioned clamps for a quick and sturdy installation. The nipple inlet is 3/8 in. with a 5/16 in. outlet, and the wire terminals feature brass studs for secure connections. Made in the U.S.A., the pump is ideal as a "booster" for nitrous oxide applications, or as a stand alone-pump for multiport EFI systems on engines up to approximately 500 HP.

 

 

 

$76.99 at Summit. Should do the trick?

 

Tim

Link to comment
Share on other sites

this is what I have.

 

Feed your beast with the new 800 HP EFI Fuel Pump. Beautiful, durable, and reliable, this new fuel pump will fuel the fire whether it's naturally aspirated, nitrous enhanced, blown or turbocharged.

Now with more flow and extended warranty.

Combines ultra high-performance with durability and reliability.

Durable pumping components that simply don't wear.

Flows over 450 lbs. per hour @ 12 Volts and 45 PSI.

-8AN inlet and -6AN ports.

Compact size facilitates easy mounting.

 

Pumping mechanism features our proprietary composite material, 304 stainless steel rollers, and 6061-T651 aircraft-grade aluminum alloy plates. Plates are coated with protective finishes per Military Specification MIL-A-8625 type III Hardcoat anodize. The body and end-caps of the pump also utilize 6061-T651 aircraft grade aluminum and are protected and beautifully finished with a type II bright dip anodize.

 

img-5-1-large.jpg

Link to comment
Share on other sites

Yeah, I already looked at that one. On MSD's site, that part number is listed to provie 43gpl, which is about 162 lph at 40psi. For the wankel, I need a lot more (did I mention that my secondary injectors will be 1300cc?)

That one that Brad posted looks absolutely beautiful!!!!, but I bet it's mucho dinero!!!

Maybe two of the MSD pumps will provide enough. Not trying to push the MSD unit, but the price point is sooooo attractive!

Tim

Link to comment
Share on other sites

"Can I run 2 fuel pumps in line?"

 

No, you would need a Y-block feed from two lines and dump back into one.

 

"how vital is it to have a sumped tank?"

 

I would not use a stock 240Z tank, even with my sump I will keep it above 1/4 tank. Just to be safe.

Link to comment
Share on other sites

I am actually going to try and run a mercedes twin bosch pump (which is inline - ie one draws from the tank and then feeds the other that runs to the fuel rail. It comes with a filter canister and a pulse regulator. The only drawback is that this unit is farily bulky and as there is little room under the 240Z I may have to mod the the spare tire well :? I picked up one of these units from a local mercedes junk yard for $150, not cheap but it was recommended to me by a local rally racer who is running a 600hp turbo charged engine and it is doing just fine for him.

 

Just another suggestion.

 

the bosch part number of the pumps is 0580 254 950

Link to comment
Share on other sites

Guest zline

why dont you use a supra pump? they seem to be popular mods for people with turbo rotary ... http://www.rx7club.com should give you all the help you need.

 

my buddy ou there has 2 supra pumps in his 640hp FD and doesnt run lean maybe its the 4 1600cc injectors that help too though :D

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...