[Main Performance Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos C900 hp paths/math Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Kevin K [Email] (#374) [Profile/Gallery] (more from Kevin K) on Fri, 9 Mar 2001 16:05:43 In Reply to: Swedish Dynamics added another item, Jeff Cunningham, Fri, 9 Mar 2001 13:01:48 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

yes, 300 hp with big inj's, and a linear 1.4 bar regulator with 20 psi boost with porting. 1.4 FPR is too low.

bosch pumps are very linear at high pressure, figure on 3 gph drop per 10 psi increased rail pressure. With 2.5 FPR and 20 psi boost, that's 56 psi at rail. xtra 16 psi means pump flows 20 gph or 122 lb/hr. That's 244 hp at bsfc=.5, more like 220 hp at .55 for turbos. This requires 34 lb inj's at 90%. Higher rail pressure means less hp with oem pump. All this assumes GSK info is correct.

---------

with 65 gph pump, and 2.5 FP, still have 60 gph at 20 lbs boost ... 500+ hp capacity. no limit on inj'r size regarding the pump.

by running 90 psi at the rail, est'd flow capacity is 65-15=50 gph, or 305 lb/hr good for 500+hp.

--- translation: pump can deliver 300 hp easy

so for 300 hp, inj's at 85%, bsfc at .55, need 49 lb/hr rated inj's with usual 3.0 FPR. Or, using GSK's RRFPR, assuming 20 lbs boost and 90 psi rail, could use 39 lb/hr rated inj's with 3.0 FPR. Either way, new ecu or ARC1 interface req'd. And need enough cfm from turbo, porting, rpms, etc.

Note that the typical .5 bsfc for na's assumes 27% of the gasoline's energy goes to flywheel hp, the rest is wasted ... mostly heat.

• Swedish Dynamics added another item, Jeff Cunningham, Fri, 9 Mar 2001 13:01:48
  • C900 hp paths/math, Kevin K , Fri, 9 Mar 2001 16:05:43 <-- Viewing This Message
  • Re: Swedish Dynamics added another item, Vince T, Fri, 9 Mar 2001 13:54:50
    • That is for the main pump, not the supply pump, Jeff Cunningham, Fri, 9 Mar 2001 14:38:00
      • Static test with stock fuel pump, Beaudreau, Fri, 9 Mar 2001 19:25:55
        • that's 39 g/hr at 85 psi, vs GSK's 25 at 40 psi ??, Kevin K , Fri, 9 Mar 2001 22:34:18
          • How can you do a test without pulsing injectors?, Mark, Sun, 11 Mar 2001 02:45:26
            • Re: How can you do a test without pulsing injectors?, Beaudreau, Sun, 11 Mar 2001 08:11:50
          • All I can say, is..., Beaudreau, Sat, 10 Mar 2001 07:59:53
            • Your pump test is valid ...., Kevin K , Sat, 10 Mar 2001 08:59:32
  • Jeff.....move to Florida, Terry Meitz, Fri, 9 Mar 2001 13:16:14

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