# RB25DET 240sx Swap

**URL:** <https://forums.speedlife.net/t/rb25det-240sx-swap/113976>\
**Category:** SON240sx Automotive\
**Created:** [March 19, 2008, 7:50am UTC](https://forums.speedlife.net/t/rb25det-240sx-swap/113976 "2008-03-19T07:50:07Z")\
**Posts on this page:** 1\
**Showing post:** 74

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**Author:** ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)\
**Post date:** [February 15, 2009, 11:01am UTC](https://forums.speedlife.net/t/rb25det-240sx-swap/113976/74 "2009-02-15T11:01:11Z")

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> [@On another topic](https://forums.speedlife.net/t/20339/3):
>
> and a quote from SupaStreet:)  
> “all we can say is “WOW!” If you’re even remotely considering the SR swap, we say save your cash for the RB conversion instead. The torque is incredible and a stock RB will far surpass the thousands of dollars that would make an SR fast.”… any words?

> [@)))))))POST UP UR MUD TIRES(((((((](https://forums.speedlife.net/t/post-up-ur-mud-tires/20264/29):
>
> I can attest to that, on a smaller scale.  
> The 20 does have more torque, and obviously the 25 will.

a stock SR20DET makes more peak torque (albeit by fractions) than a stock RB20DET because even tho an SR has 2 fewer cylinders, it has a longer stroke.

yes, superstreet says that a stock RB far surpasses the thousands of dollars that would make an sr fast, but that’s an RB26. a stock RB20 makes the same power and weighs 150 pounds more than an SR.

annnd everyone knows RB20s are slugs off-boost. way worse than an SR is off-boost (and SRs aren’t exactly amazing off-boost either)

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