finally took the plunge on a rb25

Discuss the RB20, RB25 and RB26 series engines.
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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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Well finally took the plunge and bought a Rb25 motorset from Mckinney with the mounts and driveshaft and spliced harness Super excited for it to get here next week. Just thought id share my excitement. Lookin for a mostly stock setup with FMIC and 12psi just to drive around for awhile and have fun. Eventually want to go with a big turbo. But for now i think ill love a rb25 at 12psi.

pics will be comin next week


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Shocker
Posts: 2082
Joined: Sun Aug 01, 2004 2:40 pm
Car: 89 240sxHB rb26/30

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cool stuff good luck.

rb 90 240
Posts: 61
Joined: Sun Sep 09, 2007 5:58 pm
Car: 90 240

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12lbs about the limit on the motor before it get unsafe?

FriedEGs
Posts: 219
Joined: Wed Apr 20, 2005 6:41 pm
Car: 1995 SE, Roast Beef!!
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rb 90 240 wrote:12lbs about the limit on the motor before it get unsafe?
the motor def has higher limits than that.. the turbo however, loses it's efficiency above 12 lbs... (atleast, from what I've read) Fuel injectors should be considered at that much boost, though...

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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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stock injectors should be good till 300whp. Dont know bout the stock maf tho. Might need to run a z32

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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you can still run a stock maf at 12psi. I'm running about .85 bar and haven't run off the end of the load map yet. My injectors are at about 85% duty, so that's getting up there.

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ANVIL
Posts: 1133
Joined: Sun Apr 08, 2007 11:36 am
Car: RB25DET S13.5
Location: Alaska

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12lbs safe to run on stock setup daily? only mods i have are fmic/greddy bov, fpr/255 fuel pump

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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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alright sweet man. thats good to know

FAST-DATSUN
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lilskyline240 call me Mack

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Fuel4Blood
Posts: 117
Joined: Thu Jul 12, 2007 2:30 am
Car: 93 S13 SR20DET

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good luck hopefully I will have a RB25 soon.

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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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Mack, its one of the guys that bought the motorset and mounts and wiring from you like a year ago

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ANVIL
Posts: 1133
Joined: Sun Apr 08, 2007 11:36 am
Car: RB25DET S13.5
Location: Alaska

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ANVIL wrote:12lbs safe to run on stock setup daily? only mods i have are fmic/greddy bov, fpr/255 fuel pump
anyone?

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lilskyline240
Posts: 1887
Joined: Fri Oct 14, 2005 9:55 am
Car: 90 240sx w/ rb30det

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yeah totally safe. im gunna be running stock ecu, injectors with FMIC, Walbro 255, z32 maf, and 14psi


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