Rare fuel pump? Kyosan 0810 390lph @14v+43psi

[bboyalan]

I sent this pump out to be tested last week, and it arrived back this morning. At 14v, this rugged pump flows a whopping 215lph @35psi lol. Basically, this thing can support a 13G-class turbo for 12-17psi with 450cc injectors @3bar.

40psi 200lph
45psi 185lph
50psi 174lph
55psi 161lph
60psi 150lph

The relief valve opens at 80-85psi. There goes that "mystery" hah.

[mb7050]

hmm. Do you think its the kyosan pump or something else ?

[mb7050]

http://www.3sgto.org/f2/kyosan-fuel-...es-2861-2.html
<-- independent flow bench numbers for the kyosan

Kyosan
PSI LPH
40 306.612
50 283.9
60 261.188
70 227.12
80 181.696
90 124.916

[bboyalan]

Yeah, I saw the thread on both forums. It was tested at only 0.5v higher than the numbers posted for the factory Denso on JL's site, but the difference is there. This would actually work decently with 510cc's @36-37bpsi. Realistically, it is just a "nicer" stock replacement lol.

[IPD]

so flow isn't quite up to spec with the walbro 255. that sux.

i'm really interested in the aeromotive stealth, but i've yet to see a dB comparison between it and the supra.

[J. Fast]

The biggest is it's E-85 compliance. 2, maybe three years with a Denso in Ethanol is all you get. There was a thread started on Colorado DSM about ethanol and a Chemical Engineer and Labratory Chemist from Boulder did some testing and found certain types of injectors, fuel lines, and fuel pumps were not E-85 compliant. That was one of them. It all started from Jack in the springs posting pictures of clogged injectors with black crap on them. This was years ago, but the test results are only a year old or so, so that's still pretty new.