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Post by hatchfreak Thu Feb 19, 2009 2:22 pm

ok so im doing an rb20 swap into my 91 sx. Got the motor in with a few parts left to go. But the 1 thing on my mind is... WILL THE RB RUN GOOD WITH THE STOCK 240 FUEL PUMP OR DO I NEED TO GET A NEW ONE? Any help is great!!! questions questions questions!!! 200664
hatchfreak
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Post by simon Thu Feb 19, 2009 2:27 pm

no..it wont.. get an aftermarket fuel pump or you'll have a blown motor real quick.

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Post by 240sxguy Thu Feb 19, 2009 2:36 pm

Stock boost, it will be fine.

However, you won't run stock boost cause nobody does. I agree with Simon. False economy not replacing it.

Also, put a nismo FPR in there too. Its common for RB's to run rich on stock regulators with high flow pumps.

Evan

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Post by 2ndcar Thu Feb 19, 2009 2:58 pm

definitely change it out, not only for starvation purposes but also that pump is 18 yrs old and you just don't want to chance it

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questions questions questions!!! Empty fuel pump type

Post by hatchfreak Thu Feb 19, 2009 5:09 pm

ok so ive been told that the stock fuel pump wont work with my rb swap. can anyone suggest a good one for some one on an extremly tight budget?
hatchfreak
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Number of posts : 211
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Post by lilskyline240 Thu Feb 19, 2009 5:11 pm

Walbro 255 is what i run. 100bucks shipped. I dont think ive ever ran a stock pump on a 240 before. First thing i always changed was the old worn out pump
lilskyline240
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Post by 2ndcar Sat Feb 21, 2009 2:38 am

^^^ questions questions questions!!! 42136

I usually do fluid changes first

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