Sr20/rb20 swap in fc??

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Old 09-10-13 | 12:50 AM
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Sr20/rb20 swap in fc??

Anyone know if it's possible to swap either of these in a FC? And how much fabrication would be needed? Just curious really for future purposes want a light and reliable swap
Old 09-10-13 | 08:16 AM
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Search.. has been done before, and pretty much all swaps require the same steps
Old 09-24-13 | 11:11 AM
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Haha! I know some one local who is ditching the rb26 in his 240 for a 13b. Exact opposite. :p
Old 09-24-13 | 11:21 AM
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Really why is that?? I like rotary but a rb26 that's nice
Old 09-24-13 | 02:26 PM
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Originally Posted by RotarysNoPistons
Really why is that?? I like rotary but a rb26 that's nice
He swapped in the rb26 and it started to fail. I forgot exactly why. I'd have to ask him again. The rotary is small, light, has only a few moving parts and will hold a lot of power, so it's a good choice in my opinion.
Old 09-24-13 | 04:01 PM
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Originally Posted by tuscanidream
He swapped in the rb26 and it started to fail. I forgot exactly why. I'd have to ask him again. The rotary is small, light, has only a few moving parts and will hold a lot of power, so it's a good choice in my opinion.
Yea it's a good motor if taken care of properly
Old 09-24-13 | 04:08 PM
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stay rotary, sr20 requires a bit of fab work and custom oil pan not worth the effort and cash imo.
Old 09-24-13 | 04:37 PM
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Its possible. Just need a bit of fab work. And for the oil pan theres too ways u can go about it. You can make a custom pan that clears the steering rack with a custom pickup or do like i did and just make a custom rack support so u can use stock pan

my car...... check out my build thread.


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Old 09-24-13 | 04:41 PM
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pretty hard to get lighter then a rotary engine, and the sr20 is not exactly a engine that comes to mind with the term "reliable"

O how the times change asking about swaps with that user name
Old 09-24-13 | 04:55 PM
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Originally Posted by nepopolus
pretty hard to get lighter then a rotary engine, and the sr20 is not exactly a engine that comes to mind with the term "reliable"

O how the times change asking about swaps with that user name
Sr's are reliable as **** tho. Most of them are beat to **** from drifting and still last while u continue to beat on em. I mean I beat the crap out of mine for like a year before it spun a bearing due to a broken oil pickup. IMO to avoid any of the oil starvation problems caused by drifting a sr all u need is the s15 oil pickup and larger capacity oil pan and your golden
Old 09-24-13 | 05:01 PM
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Also the sr is an all around better engine then the rb20 btw. The only thing the rb20 has on the SR is how it sounds. Which is amazing lol
Old 09-24-13 | 11:03 PM
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Originally Posted by assad112000
Its possible. Just need a bit of fab work. And for the oil pan theres too ways u can go about it. You can make a custom pan that clears the steering rack with a custom pickup or do like i did and just make a custom rack support so u can use stock pan my car...... check out my build thread.

How much did you spend and how long??
Old 09-24-13 | 11:32 PM
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Originally Posted by RotarysNoPistons
How much did you spend and how long??
To get the custom rack support, crossmember, engine, and trans mounts done by someone. I would estimate no more then $300 since its not alot of welding at all as u can see from my car. Soo in all...

$1500-2k for motor
$300 for mounts(would be like way way less if u did it urself)
$300-400 for wiring(cheap if u do it urself)

and then of course youll need a custom exhaust, walbro 255 fuel pump, electric fans, and custom intercooler setup. Your Speedo wont work cause mazda is cable driven and nissan is electric sensor unless u can rig something up

Last edited by assad112000; 09-24-13 at 11:35 PM.
Old 09-24-13 | 11:49 PM
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Originally Posted by assad112000
To get the custom rack support, crossmember, engine, and trans mounts done by someone. I would estimate no more then $300 since its not alot of welding at all as u can see from my car. Soo in all... $1500-2k for motor $300 for mounts(would be like way way less if u did it urself) $300-400 for wiring(cheap if u do it urself) and then of course youll need a custom exhaust, walbro 255 fuel pump, electric fans, and custom intercooler setup. Your Speedo wont work cause mazda is cable driven and nissan is electric sensor unless u can rig something up
So do you still have that set up?
Old 09-24-13 | 11:51 PM
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Yup its my current drift car. Oh i forgot to add.. u need a custom driveshaft too of course. which is like $200-350
Old 09-25-13 | 12:04 AM
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Originally Posted by assad112000
Yup its my current drift car. Oh i forgot to add.. u need a custom driveshaft too of course. which is like $200-350
Alright and I'm guessing this build took about 5 months maybe more?
Old 09-25-13 | 12:18 AM
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well the fab work could be done in a weekend if you got the supplies. I already had the motor pulled out of my old 240. I had the motor in and everything after a week. And the wiring was done at another shop which took a week. Luckily i got a driveshaft already for a sr into a fc from someone. But if u want one made and shipped it usually takes a couple weeks. In my opinion from the time u get ur motor u could do the whole swap in about a month

Last edited by assad112000; 09-25-13 at 12:22 AM.
Old 09-25-13 | 09:34 AM
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If you have to ask how much it costs and how long it takes, it will cost more and take longer then stated above
Old 09-25-13 | 09:51 AM
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besides if you are going to use a engine with rocker arms why not a ls1? everything is already out there to buy and drop in. Especially if it is a drift car, despite what people may say there is a very obvious reason as to why v8's are taking over the entire figure skating for cars scene.
Old 09-25-13 | 10:26 AM
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Ls1 is nice but my last two cars were v8s I'd rather not go back to it.
Old 10-01-13 | 12:05 AM
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You need to change your username fast..
Old 10-01-13 | 07:34 AM
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Originally Posted by assad112000
In my opinion from the time u get ur motor u could do the whole swap in about a month
Originally Posted by Furb
If you have to ask how much it costs and how long it takes, it will cost more and take longer then stated above
A lot depends on the condition of the car before you start and your definition of "finished".

Peruse the build threads over at norotors (which is where you should be anyhow) and you'll see that much of their time is spent on things that really have nothing to do with the engine/drivetrain.
Suspension, brakes, chassis electrical...that sort of thing.
To be fair, this is because most people seem to start their projects with all new cars (well, new to them) and they have no history with them, so everything must be checked/upgraded.
If you start with a complete running car, life is much simpler.

"Finished" is a slippery word.
Is it done when it starts (YAY!) or not until you finally figure out how to get the speedo working?

Mounting the engine/trans is actually the easiest part of the whole job.
Using the readily available kits, you can have an LSx/T-56 bolted into a FC in just a few hours, a custom job will take somewhat longer depending on skillset, tooling, etc. but is still relatively fast.
It's the myriad small details that take all the time and creativity, that's where folks get bogged down.
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