Which Walbro?
1999 NB with BRP MP62, 330 injectors. Running low on fuel at the top.
Which Walbro fuel pump to buy? |
255hp
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LPH model or is there a model called just 255HP?
Want to make sure I get the right thingamujig.
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Originally Posted by Ben
(Post 776157)
255hp
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If you have a feul returnline from the injectorrail you'll probably fload the FPR, raising the fuel pressure at idle. There is a Miata turbo Wiki that gives a guideline for the pump.
Here you go: http://miataturbo.wikidot.com/fuel-pump |
Originally Posted by IHI
(Post 777143)
If you have a feul returnline from the injectorrail you'll probably fload the FPR, raising the fuel pressure at idle. There is a Miata turbo Wiki that gives a guideline for the pump.
Here you go: http://miataturbo.wikidot.com/fuel-pump |
i totally have a 255HP to sell too.
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Get the neew super awesome mega flow 400lph wally!!! Love
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255 +1
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yup 255 is what i ran on mine
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255 i= win. 300 = more win. 400 = epic win. 255 is fine for me at the moment tho
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theoretically the 255 is good to a little over 500 bhp on the NB (@ 60psi)
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Originally Posted by Faeflora
(Post 779358)
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1 Attachment(s)
Simple math crew checking in:
https://www.miataturbo.net/attachmen...ine=1317889878 ID1000cc injector @ 87% DC, ~14v, and 72.5psi (for example) flows ~1000cc/min. Therefore 4 of these injectors is 4000cc/min. 1000cc per liter 60 minutes per hour cc/min * 0.06 = liter/hour 4000cc/min = 240lph A DW300 flows ~255lph at 72psi. A while ago, I used Injector Dynamics' online calculator to get some basic horsepower capabilities for ID1000s at various fuel pressures. ID1000s at 70psi will support ~750bhp on gasoline at 70psi, or ~550bhp on E85. Since the DW300 will flow enough fuel to support the flow capacity of the injectors, we can therefore say that a single in-tank Deatschwerks DW300 fuel pump will support 650+whp on gasoline. Someday I will decide to crack 500whp on E85. Probably not with the 2871R, but as soon as I can actually get my hands on a twin-scroll BW 7064 .92a/r I'll switch over and see what that turbo will do at high boost. Since 240lph is a safe number for 400whp, 25% more fuel is 320lph. The DW300 will clear 325lph, but only at 30psi, so I'll use a DW300 in the tank and an external Bosch 044 to knock the fuel pressure up to ~90psi. This is the smart way to do a big power fuel system, since the track crew knows the importance of having the OEM fuel sock in the OEM location in the tank. |
I'm using a Bosch 040 intank...
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I use the 190hp with 305's and at 10-11psi I have no issues.
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Originally Posted by flounder
(Post 780576)
I use the 190hp with 305's and at 10-11psi I have no issues.
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I have the walbro 255hp. It's annoying loud with the hard top on, and the pitch changes when you have the turn signal on. Holds a steady 40psi at WOT though.
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Originally Posted by Braineack
(Post 777207)
i totally have a 255HP to sell too.
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