SR20 det
01-23-2008, 02:12 PM
#26
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Yeah, this looks interesting. That pic looks weird - a piston motor under an RX-8 hood! I've seen people talk about it, but this is the first one I've actually seen (there is a guy in the Chicago area that has a LS-1 in his FD, but I haven't seen it done with an 8). Will be curious to know how it affects the balance of the car. Looks like it doesn't extend too far ahead of the front axle. What is the weight of this motor vs the renesis?
So what are you going to call your Frankenstein monster?
It's not really an RX anymore. Maybe a MX-8?
Good luck!
So what are you going to call your Frankenstein monster?
It's not really an RX anymore. Maybe a MX-8?Good luck!
01-23-2008, 03:33 PM
#30
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hey good luck man, I think this is an awesome Idea, I used to have an S13 w/ a CA18det in it, I loved that motor and just recently sold it, I had thoughts of throwing it in the 8 but never had the time or the money to pull it off, deff wana see this get up and running!!!!
01-23-2008, 03:41 PM
#31
RX8 HA HA
good luck with that. As a rotary fan im not totally dissapointed for the sr20det is one of nissans best engines ever created. If it were me i would have went with a RB motor (if that could fit) but the SR looks nice and snug in there.
01-23-2008, 04:11 PM
#33
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atleast you stayed japanese lol. damn ls1' corny mumbo jumbo
I say gl and **** on whoever gives u sh*t haha they're just jealous.
as for the rb engine fitting into the rx-8. yes it will(with the moving of some items)
ive been talking to a few good fabbers about different swaps. I'd like to see some1 get creative and swap a f22 engine, another great high revving power plant.
as for the ej20... wow why? lol. replace 1 unreliable high power, power plant for another? Sounds like trouble and not worth it.
I say gl and **** on whoever gives u sh*t haha they're just jealous.
as for the rb engine fitting into the rx-8. yes it will(with the moving of some items)
ive been talking to a few good fabbers about different swaps. I'd like to see some1 get creative and swap a f22 engine, another great high revving power plant.
as for the ej20... wow why? lol. replace 1 unreliable high power, power plant for another? Sounds like trouble and not worth it.
01-23-2008, 05:09 PM
#35
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It's projects like these that make the RX8 still tempting.
Good luck with your project and once it's done, you need to post some vids and dyno charts.
I've heard of the sr20det engine, but never really knew much about it. Anyone want to enlighten me?
Good luck with your project and once it's done, you need to post some vids and dyno charts.
I've heard of the sr20det engine, but never really knew much about it. Anyone want to enlighten me?
01-23-2008, 06:22 PM
#37
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To be a little more specific. the SR20 was in the 180sx and Silvia from 91 to I think around 03 or so ending with the S15. I've helped install many and they are a great motor, strong and reliable. This will deffinatly be an awesome car when finished. The Rx8 is a much better chassis but I always miss the power and sound from my CA18det which was in the silvia/180sx before the SR. I've had thoughts of doing this myself. Depending on how yours turns out and if/when i blow another motor I'll deff consider doing this
01-23-2008, 06:36 PM
#38
Pshhh... it's only a SR20DET... try swapping in a RB20DET! Here's my current project, it's almost near completion. This is the reason why I'm not on here whoring the forums lately.
Here's the hardest part; getting this huge engine in.
Sorry for the different size and crappy *** pics, they're all taken by my cell phone. I'm going to drop in a 2JZ into an 8 one day.
Here's the hardest part; getting this huge engine in.
Sorry for the different size and crappy *** pics, they're all taken by my cell phone. I'm going to drop in a 2JZ into an 8 one day.
01-23-2008, 08:05 PM
#40
SR Dubbed Rx8
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not so much. kep in mind that i have had a company here in town ( racingconcepts.net) build an entire custom subframe to do this swap. the power steering unit has been moved forward about 4" to clear the sr's oil pan. luckily moving it this small bit didnt effect sway bar placement. as for getting the electric assist working thats one of those things that is going to have to be worked out. its as simple as putting a speed sensor on the sr somewhere or the rear end, then translating that signal to tha rack so it will work properly without the pcm. so yes the power steering will be ok after a lil work
01-23-2008, 11:53 PM
#43
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wow nicee keep us updated. If i had a choice to do an engine swap first in line would be a 20b, if that doesnt work then either RB20DET or the 2JZ-GTE, if those dont work out then id go with the SR20DET.
01-24-2008, 12:15 AM
#45
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The RX-8 really wants a rear-sump engine. There are only two modern four-cylinders that will go in easy. The BP from the old Miata is light, small, rear-sumped and almost free. It responds well to boost.
I'm told by someone who should know that a current MX-5 subframe is a direct swap into an RX-8, which would let you build a 2.3L MZR. Still not trivial, but with the right turbo on the side, would make an RX-8 into a GT3 killa.
The photos in the swap here seem to show the engine on quite a rearward slant, though I suppose it could just be the fender slope. That's often the case when front-sump engines are put in cars that want rear-sump motors.
I'd personally like to do a Toyota 1UZ V-8. But my whole reason for buying an RX-8 is so I don't have to work on it.
I'm told by someone who should know that a current MX-5 subframe is a direct swap into an RX-8, which would let you build a 2.3L MZR. Still not trivial, but with the right turbo on the side, would make an RX-8 into a GT3 killa.
The photos in the swap here seem to show the engine on quite a rearward slant, though I suppose it could just be the fender slope. That's often the case when front-sump engines are put in cars that want rear-sump motors.
I'd personally like to do a Toyota 1UZ V-8. But my whole reason for buying an RX-8 is so I don't have to work on it.
01-25-2008, 05:34 AM
#50
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Well if this guy pulls off the Sr20Det swap and doesn't cost an arm and a leg, I'm going to start planning a swapped motor when my rennie decides to quit.
I want to see this thing fully mounted so I can determine the space available above the motor. Although I love the SR, I'm a KA-T fan.
So depending on whether there is space above the motor would be my determining factor.
In case anyone wanted to know. Nissan KA24DE is the stock motor on US spec 240SX.
Dirt cheap motor since everyone swaps, lots of aftermarket parts available, durable iron block, more torque than an equivalent SR, suited with a t3/t04e would yield 350+ HP easily.
Th downside is no more 6-speed, not sure if the nissan ecu can control the creature comforts this car offers, ex. heated seats, etc..
Last edited by Wind Dance; 01-25-2008 at 05:37 AM.