Looking to do an SR20 Swap - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

cdrazic93 · 10-03-2014, 10:37 AM

This thread is full of (common sense to us) but useful research for those who dont...seem to grasp the consiquences of building these cars. 1 engine out of 1000 probably has blown up. Better have a recall #GM

wparsons · 10-03-2014, 10:53 AM

Quote:

Originally Posted by s2d4

Yeah no, my mates tell me SR is the way. They knows everything and can definitely do it for 6k.
Supporting mods, f that, my mates said no need, it'll handle 600hp like that car we saw on Facebook.

Unrelated to anything in this thread, but holy eff our cars look similar!

s2d4 · 10-03-2014, 11:43 AM

Quote:

Originally Posted by wparsons

Unrelated to anything in this thread, but holy eff our cars look similar!

The differences are in the details

ptuning · 10-03-2014, 12:10 PM

I would not recommend doing an SR20 swap.

Having tuned a gazillion different 4 cylinder cars with all different combinations of NA mods, SC's, Turbos, etc, I can say that the SR20 engine is only okay at best.

The powerband for a given turbo size on a stock SR20 engine is nothing to write home about compared to other 4 cylinder engines out there. As others have mentioned too, it will need to be built to be reliable.

Also, you DO NOT want to swap out a modern high compression, dual variable cam timing, dual injector engine with advanced traction controlled ECU and modern 6-speed transmission transmission for antiquated technology from the late 80's, early 90's. This would be like trading in a date with Kate Upton for Farrah Fawcett. What was great back then doesn't compare to what is available nowadays.

If you really wanted to swap for another 4 cylinder engine, there are much better choices out there. The F2xC engine from the S2000 would be the engine to go with. I would even consider going with the 4-banger out of the Scion tC or tC2. You would need to adapt it for use in a RWD application, but it would be way easier to make reliable power/torque with those engines compared to the SR20.

Even with the other available choices out there, I'd rank the new FA20C engine in my top 5 list of great 4-bangers. The only way I'd consider a reverse technology swap would be if I had a fully built SR20 drivetrain sitting on a crate and a fire damaged FR-S/BRZ without the engine/wiring and was planning on building a race car.

As always, not here to criticize others, just giving my opinion based on my experience.

- Toan

STV3 · 10-03-2014, 12:15 PM

Just throw a Neon SRT-4 motor in there.

continuecrushing · 10-03-2014, 12:18 PM

Quote:

Originally Posted by STV3

Just throw a Neon SRT-4 motor in there.

at least we'd make easy power then...

STV3 · 10-03-2014, 12:20 PM

Quote:

Originally Posted by Shutter

at least we'd make easy power then...

I know, I always think what if I took my Neon motor out and threw it in my FRS.... I would never bother doing it but I would love to see it done.

continuecrushing · 10-03-2014, 12:25 PM

Quote:

Originally Posted by STV3

I know, I always think what if I took my Neon motor out and threw it in my FRS.... I would never bother doing it but I would love to see it done.

right? I loved my SRT, fwd was the only real reason I got rid of it.

I sure do miss it some days...and anytime I'm trying to pass someone haha

continuecrushing · 10-03-2014, 12:27 PM

Quote:

Originally Posted by ptuning

This would be like trading in a date with Kate Upton for Farrah Fawcett. What was great back then doesn't compare to what is available nowadays.

This post is irrelevant without photos of Kate Upton.

STV3 · 10-03-2014, 12:32 PM

Quote:

Originally Posted by Shutter

right? I loved my SRT, fwd was the only real reason I got rid of it.

I sure do miss it some days...and anytime I'm trying to pass someone haha

Yeah. I'm not gonna lie, my SRT does get neglected a lot now since I bought the FRS for my daily. But about every other weekend I take it out for some straight line fun lol.

cdrazic93 · 10-03-2014, 02:04 PM

Quote:

Originally Posted by ptuning

If you really wanted to swap for another 4 cylinder engine, there are much better choices out there. The F2xC engine from the S2000

This. Buy an F22C, stroke and bore it, turbo it, then have fun.

/thread

Sideways&Smiling · 10-23-2014, 08:04 PM

Quote:

Originally Posted by ptuning

I would not recommend doing an SR20 swap.

Having tuned a gazillion different 4 cylinder cars with all different combinations of NA mods, SC's, Turbos, etc, I can say that the SR20 engine is only okay at best.

The powerband for a given turbo size on a stock SR20 engine is nothing to write home about compared to other 4 cylinder engines out there. As others have mentioned too, it will need to be built to be reliable.

Also, you DO NOT want to swap out a modern high compression, dual variable cam timing, dual injector engine with advanced traction controlled ECU and modern 6-speed transmission transmission for antiquated technology from the late 80's, early 90's. This would be like trading in a date with Kate Upton for Farrah Fawcett. What was great back then doesn't compare to what is available nowadays.

If you really wanted to swap for another 4 cylinder engine, there are much better choices out there. The F2xC engine from the S2000 would be the engine to go with. I would even consider going with the 4-banger out of the Scion tC or tC2. You would need to adapt it for use in a RWD application, but it would be way easier to make reliable power/torque with those engines compared to the SR20.

Even with the other available choices out there, I'd rank the new FA20C engine in my top 5 list of great 4-bangers. The only way I'd consider a reverse technology swap would be if I had a fully built SR20 drivetrain sitting on a crate and a fire damaged FR-S/BRZ without the engine/wiring and was planning on building a race car.

As always, not here to criticize others, just giving my opinion based on my experience.

- Toan

Have you tuned one with an SR20VE VVL head? A much different story. With one of those, it's comparable to Evo and S2000 engines.

Also, one good thing about the SR is you can easily use a Z32 transmission with it, which is a much cheaper option than what's available for an S2000 or FRS/BRZ.

Sideways&Smiling · 10-23-2014, 08:05 PM

Quote:

Originally Posted by cdrazic93

This. Buy an F22C, stroke and bore it, turbo it, then have fun.

/thread

Would still need a transmission that could take the abuse though...

Sideways&Smiling · 10-23-2014, 08:20 PM

Quote:

Originally Posted by Reaper

The sr20 is heavy. Also good luck getting the transmission to fit into this car.

If you really want a swap use an ls or a 1uzfe v8. But it will be a gutted track car until someone figures out the canbus system. They are both lighter than a sr20 and are more reliable.

I'm pretty sure this is not true.

10-03-2014, 10:37 AM	#57
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s)	This thread is full of (common sense to us) but useful research for those who dont...seem to grasp the consiquences of building these cars. 1 engine out of 1000 probably has blown up. Better have a recall #GM __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

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10-03-2014, 12:10 PM	#60
ptuning Senior Member Join Date: Sep 2012 Drives: White FR-S Location: Manassas, Virginia Posts: 537 Thanks: 272 Thanked 1,003 Times in 305 Posts Mentioned: 146 Post(s)	I would not recommend doing an SR20 swap. Having tuned a gazillion different 4 cylinder cars with all different combinations of NA mods, SC's, Turbos, etc, I can say that the SR20 engine is only okay at best. The powerband for a given turbo size on a stock SR20 engine is nothing to write home about compared to other 4 cylinder engines out there. As others have mentioned too, it will need to be built to be reliable. Also, you DO NOT want to swap out a modern high compression, dual variable cam timing, dual injector engine with advanced traction controlled ECU and modern 6-speed transmission transmission for antiquated technology from the late 80's, early 90's. This would be like trading in a date with Kate Upton for Farrah Fawcett. What was great back then doesn't compare to what is available nowadays. If you really wanted to swap for another 4 cylinder engine, there are much better choices out there. The F2xC engine from the S2000 would be the engine to go with. I would even consider going with the 4-banger out of the Scion tC or tC2. You would need to adapt it for use in a RWD application, but it would be way easier to make reliable power/torque with those engines compared to the SR20. Even with the other available choices out there, I'd rank the new FA20C engine in my top 5 list of great 4-bangers. The only way I'd consider a reverse technology swap would be if I had a fully built SR20 drivetrain sitting on a crate and a fire damaged FR-S/BRZ without the engine/wiring and was planning on building a race car. As always, not here to criticize others, just giving my opinion based on my experience. - Toan

10-03-2014, 12:15 PM	#61
STV3 Señor Member Join Date: May 2013 Drives: 2013 Scion FR-S Location: Rockland County NY Posts: 1,607 Thanks: 1,103 Thanked 1,322 Times in 645 Posts Mentioned: 17 Post(s)	Just throw a Neon SRT-4 motor in there.

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