# Best Way to Get 300whp+ on a 240sx shell **URL:** \ **Category:** SON240sx Automotive\ **Created:** [July 21, 2007, 8:52am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838 "2007-07-21T08:52:31Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![imported\_Jared](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_jared/32/5660_2.png) [@imported\_Jared](https://forums.speedlife.net/u/imported_Jared)\ **Post date:** [July 21, 2007, 8:52am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/1 "2007-07-21T08:52:31Z")
This may have been posted before but I’m new and I searched and couldn’t find anything. Basically, I will likely be using the sr20det engine, but I am still considering the rb20det and rb25det engines. I was wondering if people who have 300+ hp on there 240’s could tell me what they have done. I know that the rb25det engine costs a lot more than both other engines, and cost IS an issue here, I’m definately willing to spend about 4 grand under the hood, maybe a little more. If I go with the rb25 engine will I have to invest quite a bit more money to increase it to 300 or are the mods fairly simple? If Im going to go with the sr20 or rb20, will i need a bigger turbo set up to pull 300hp at the wheels? Basically just looking for some pointers with this one, and looking for the cheapest easiest way to pull 300+ hp to the wheels. ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [July 21, 2007, 9:35am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/2 "2007-07-21T09:35:49Z")
Cheap & Easy do not go together… If you want 300whp on a KA or SR you’d be looking around $1500-$3000 (depending on what kind of parts and whether their new/used) and that wouldnt even include an SR20 motor set or a FMIC etc etc… I’d imagine anyone on this forum making 300+whp has got atleast $5000 invested into their engine/setup. ---
**Author:** ![matty](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/matty/32/5043_2.png) [@matty](https://forums.speedlife.net/u/matty)\ **Post date:** [July 21, 2007, 9:41am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/3 "2007-07-21T09:41:53Z")
he’s right i have a fairly decent ammount of cash invested in my motor, whih i dont wantg to disclose and i doubt im making 200 yet still 7 lbs tho, soon to be 10, then 12 once a few more parts come in ---
**Author:** ![Oni-Kyan](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/oni-kyan/32/5503_2.png) [@Oni-Kyan](https://forums.speedlife.net/u/Oni-Kyan)\ **Post date:** [July 21, 2007, 9:49am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/4 "2007-07-21T09:49:47Z")
or you could just buy my coupe for alot more then you planed to spend but youd get more the 300whp ---
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [July 21, 2007, 3:15pm UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/5 "2007-07-21T15:15:34Z")
how much for your coupe? ---
**Author:** ![Gongster](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gongster/32/5615_2.png) [@Gongster](https://forums.speedlife.net/u/Gongster)\ **Post date:** [July 21, 2007, 3:29pm UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/6 "2007-07-21T15:29:58Z")
The cheapest option would be to KA-T. If your motor is in good condition stock internals should hold 300WHP with a good tune. If you are going to beat on it a lot I would suggest a rebuild with forged internals. ---
**Author:** ![KoukiS14](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/koukis14/32/5522_2.png) [@KoukiS14](https://forums.speedlife.net/u/KoukiS14)\ **Post date:** [July 22, 2007, 8:34am UTC](https://forums.speedlife.net/t/best-way-to-get-300whp-on-a-240sx-shell/107838/7 "2007-07-22T08:34:24Z")
Cheapest way to have 300whp is not to be cheap and build everything right the first time. turbo - 2871R or S15 Injectors - 550cc or bigger Rom ECU or EMS 300ZX MAF Front Mount IC Full 3-inch exhaust