driveshaft and fuel system questions

[CKs240sxNC]

Anyone know if the auto and manuel driveshafts are the same in length? And what are the KA injecters and fuel pump good for, as far as HP?

thanks

[Joe]

i belive length and spline count are different

and injectors? this is the RB forum...

fuel pump is good for anything you can get naturally aspirated, with any form of forced induction you need to upgrade.

[CKs240sxNC]

i have a rb25, was wondering if the fuel pump would be ok on stock boost for now..

[Ramius83]

I can't answer the driveshaft question.

But as far as the fuel injectors and fuel pump go......BLAH.

The KA injectors are the same as the Maxima 95-99 injectors. Red top 230-240ish CC. We have successfully taken them to 325HP+, but that is at or near 100% duty cycle. That is with the use of a FMU (fuel management unit like the Vortech FMU, S-FMU, and Cartech). You can get a cheap set of 95-96 300zx TT injectors (purple top 370CC) for around $100-$200.

The fuel pump is good for maybe 50HP above stock and that is it. You can maybe use it for a 50 dry shot of nitrous, and that's it lol. You can't risk using it because of a simple rule; why run an expensive RB motor with hard work under it, and use a fuel pump that costs only $100 to replace with a Walbro 255HP?

[CKs240sxNC]

so the 300zx injecters will work on a rb25? cool and where can i get the fuel pump for $100?

[Joe]

just look for a walboro pump

why are you asking about Ka injectors if you have a RB?

[Ramius83]

If I am not mistaken, your RB25 injectors are already 370CC injectors. They are a purpleish color, and are identical to the 300zx TT 95-96 injectors. I know this because when I had my Maxima, I purchased a set from a gentleman here on NICO that has an RB25, and I purchased his whole fuel rail. Identical in every way.....and its proven.

[eh?]

used z32 injectors for $100? show me

[Ramius83]

Hey eh?, you are just the one I was talking about lol. I purchased three sets on twinturbo.net for about $130 a set. Then, sold them on eBay for about $200. And, one Maxima.org these days, that is what they are going for, people are getting smart damm it lol......

[eh?]

hmm i was thinking the were going for ~$300/set. Usually a set of Sr20 injectors go for about $100.

[blk90s13]

so the 300zx injecters will work on a rb25? cool and where can i get the fuel pump for $100?

here is the pump

http://search.ebay.com/240sx-f...omZR8

[CKs240sxNC]

just look for a walboro pump

why are you asking about Ka injectors if you have a RB?

Maybe because i dont have the rb injecters and my car has a ka in it now

blk90s13

thanks man!

[shedrifts]

hey i was wondering if the z32 injectors will work on my rb20det iam doing a turbo upgrade and iam hoping for 350 +will these injectors hold and work thanks

[lyon23]

no the z32 injectors will not work unless you get a custom fuel rail..the z32 are side feed and the rb20 are top fee.. just find you some 2nd gen rx7 injectors turbo or n/a they are a direct fit..n/a injectors are 450 turbo are 550 cc I have 450 on my rb20 from an 87.