Snook

iTrader: (12)

Does anyone have the link where they compared the flow of all of the fuel pumps?

it was mostly from japanese cars
the mkiv, rx7, cosmo, stuff like that

thanks

Mahjik

iTrader: (1)

Not quite the same link, but:

http://www.newwave.net/~flanham/wlan...l/fuelfaq.html

Snook

iTrader: (12)

not quite but that helps

my question is which flows better the m2 boshe pump or the stock supra tt pump?

jimlab

The MKIV Supra pump is roughly equivalent to, if not the same as, the Nippondenso "Cosmo" pump shown in that comparison. Both the Walbro and Bosch pumps outflow the Nippondenso pump.

Doug Rippie Motorsports (www.dougrippie.com) has the correct model of Bosch pump (there are three different models; two are in-line, one is a bottom feeder) for swapping into your tank. Price was $180, but has gone up to $200. Not sure how that compares to M2's price, because I couldn't find the pump listed on their site.

Bosch pump compared to the Walbro...

RX7SpiritR

iTrader: (1)

walbro looks so scrony.

Snook

iTrader: (12)

thanks jim
I have the m2 boshe in my car right now and I also have a supra pump in my room

just making sure I made the right decision to sell the supra one.

BTW I'm pushing 400rwhp do you think that the M2 is enough at this point? I may be going up to 450rwhp soon will I have to go a different route?

the_glass_man

iTrader: (2)

That's not not entirely correct.
The Supra/Denso pump does flow more then the Walbro.
Info
Here and
Here.
The Bosch Motorsports pumps come in many capacities. The big ones are the 967 and 044.

jimlab

Scrawny? Well, considering the Bosch pump is the size of a Coke can...

jimlab

Any of the three "255 lph" pumps (Denso, Walbro, Bosch) should be good for about 500 RWHP when in good working order and combined with properly sized injectors. If you want to play it safe, you can double up, which is what I plan to do (twin Bosch pumps).

I happen to like the Bosch pumps because of the large screened inlet on the bottom, and because its size means there's a lot of surface area to radiate heat and cool the pump. I would expect the Bosch pump to last longer than the Walbro, but I can't verify that there's any reason to be concerned about it.

jimlab

Thanks for the links. I wasn't aware that the Supra pump was rated at 260 lph. From what I've read, it was said to be the same as the Denso "Cosmo" pump, which flows more than the stock FD pump, but not as much as the Walbro or Bosch pumps.