SR20 swap kits
09-30-2010, 04:00 PM
#41
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why thank you sir 
agreed, the economics don't quite work at $3k for the mounts/pan + motor + turbo hardware. if mounts were cheaper then you do get some benefits for a track miata - you can blow up your **** and swap in a new off-the-shelf-block and be back in business.
as hustler/sav said, the bp hotside hardware (AF) thats available is kind of a big equalizer.
Bottom line, its a pointless swap if trying to go for extreme power.
There are BP's out there that make 800, 600, 500, 400. To get an SR into those power figures you'd have to build it just like the BP. So wtf is the point in doing swap and then STILL needing to build the engine?
If you want stupid power throw in a v8 and sc it, or cam it, or run nitrous. either way you'll make way more power than you know what to do with.
You want a fast track miata you don't need huge power. 350-400 is enough to make guys like Sav, Snowboarder, Emilio, and many others VERY fast and competitive on the track.
So pick one: are we talking about fast track miata or fast street miata?
Either way you don't need a stupid SR swap
There are BP's out there that make 800, 600, 500, 400. To get an SR into those power figures you'd have to build it just like the BP. So wtf is the point in doing swap and then STILL needing to build the engine?
If you want stupid power throw in a v8 and sc it, or cam it, or run nitrous. either way you'll make way more power than you know what to do with.
You want a fast track miata you don't need huge power. 350-400 is enough to make guys like Sav, Snowboarder, Emilio, and many others VERY fast and competitive on the track.
So pick one: are we talking about fast track miata or fast street miata?
Either way you don't need a stupid SR swap
as hustler/sav said, the bp hotside hardware (AF) thats available is kind of a big equalizer.
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09-30-2010, 05:28 PM
#42
Surely you would take a 1JZ (or even a 2JZ!) over an RB. Those Toyota bottom ends can really take a beating, and they are almost as cheap as an SR (well 1JZs are at least). RB20 is a decent engine, but to build a high power RB is (or at least was back when I was ******* with them) HEAPS more than building a Toyota. I am still waiting to see a legitimate, running 2JZ swap tho so the jury is still out.
CA18? No way. The CA18 is the same (or even older) technology than the BP. Why? Even Nissan pissed it off in favor of the SR20.
CA18? No way. The CA18 is the same (or even older) technology than the BP. Why? Even Nissan pissed it off in favor of the SR20.
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09-30-2010, 07:41 PM
#43
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Ok for fun check out this torque curve on a decent LSx engine. I say decent because it has to make over 1k hp in the LSx world these days to be note worthy. O ya I forgot to mention that its N/A
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09-30-2010, 11:55 PM
#45
This thread has gotten gay. LSx miatas are superior street cars. If your going to track there is no sense doing anything but a bp. The swap kit is over priced and the same money put into a BP would be superior. By the time you do it with this kit, and make decent power you shoulda got a V8. Atleast a Ca would rev to ****, or a rb would sound good and have sweet cool factor.
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10-02-2010, 01:47 AM
#46
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while looking for a tial 38mm i saw dis:
1050 + 3000 + fmic + driveshaft = 287whp miata?
I have a 287.whp sr20det with 264 cams, valve springs, metal headgasket, S15dual bb spec r turbo, earls turbo lines, 550cc injectors z32 maf, with tranny I am sacraficing, selling all at a crack head price, the price goes $40.00 a day, its price is set at $1050.00 it is at quick silver towing so plus the cost To have it towed to my friends house.
the car is in west los angeles, and i am near by,
I want certain things off the car and am selling a working enging swap to pretty much get what we both want, my number is 310.713.7101 my names steve, call me if you waew
the car is in west los angeles, and i am near by,
I want certain things off the car and am selling a working enging swap to pretty much get what we both want, my number is 310.713.7101 my names steve, call me if you waew
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10-02-2010, 09:01 AM
#47
This thread has gotten gay. LSx miatas are superior street cars. If your going to track there is no sense doing anything but a bp. The swap kit is over priced and the same money put into a BP would be superior. By the time you do it with this kit, and make decent power you shoulda got a V8. Atleast a Ca would rev to ****, or a rb would sound good and have sweet cool factor.
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10-09-2010, 10:48 AM
#48
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While this may be pricey, the price does seem right with that oil pan for custom non factory production. Lots of custom fab parts are always $$$ and they need to make a living somehow.
If they made lets say 2k profit per setup, they would probably sell one one or so a month and the market is very niche of people wanting a SR over FI, rotary, and v8. Sounds very reasonable to me.
With that said, I've seen this kit on a car personally and the quality was spot on. Very little was done to the firewall to make it fit and the owner never had any problems with the strength of it.
If they made lets say 2k profit per setup, they would probably sell one one or so a month and the market is very niche of people wanting a SR over FI, rotary, and v8. Sounds very reasonable to me.
With that said, I've seen this kit on a car personally and the quality was spot on. Very little was done to the firewall to make it fit and the owner never had any problems with the strength of it.
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10-09-2010, 01:05 PM
#51
You know one of the things I'm looking forward to when I LS swap my car?
A car that doesn't pound my head in on the highway.
Who's to say that Trey wouldn't be faster with an SR20 swap, or even a dialed V8 swap? The problem I see is that most V8 swaps are done for the street, so are left at low power levels compared to what they're capable of, and have mild suspensions, "must haves" like AC and PS
, etc.
Do we have weight figures for a dressed SR20 and a turbo BP, with their transmissions attached? The weight thing is intriguing.
Of course if you're really doing the swap for the weight, wait until the Hayabusa kit is released.. www.miatabusa.com
A car that doesn't pound my head in on the highway.
Who's to say that Trey wouldn't be faster with an SR20 swap, or even a dialed V8 swap? The problem I see is that most V8 swaps are done for the street, so are left at low power levels compared to what they're capable of, and have mild suspensions, "must haves" like AC and PS
, etc. Do we have weight figures for a dressed SR20 and a turbo BP, with their transmissions attached? The weight thing is intriguing.
Of course if you're really doing the swap for the weight, wait until the Hayabusa kit is released.. www.miatabusa.com
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10-11-2010, 12:16 AM
#54
LSX swaps seem to require 10K + 50 hrs fab time. With this kit you could leave the diff alone and that 50hrs could be much less. I would never do this swap either, but it seems like a larger, lighter engine swap that takes considerably less time and money than an LS swap is a win--provided the kit costs much less than $3k.
LSX engines are not cheap because everybody wants one. Along the lines of what jasonb brought up, scoop up an SR20 that someone else dumped a bunch of money into for $1000.
$3k for brackets is too expensive but if the kit is still around in a year or two this is great news for Miatas.
LSX engines are not cheap because everybody wants one. Along the lines of what jasonb brought up, scoop up an SR20 that someone else dumped a bunch of money into for $1000.
$3k for brackets is too expensive but if the kit is still around in a year or two this is great news for Miatas.
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10-11-2010, 12:49 AM
#55
lol @ V8 debate. I've now been on the track with several V8 Miatas. Two of them were wheel-to-wheel legal, 275 Hoosiers, and 450whp+ and I've still gone faster than all of them in my 250whp street car. The last time this happened we were all warned to "look out for that LS2 Miata!!!" which apparently meant "watch out for him blocking." For some reason even at double the power, they can't keep up and the California boys will agree.
Spend as much time as you want swapping whatever motor you want in the car, I'll be at the track.
Spend as much time as you want swapping whatever motor you want in the car, I'll be at the track.
Give it time, you will come to the dark side eventually..... Then spend a year cussing at it as you work the bugs out of a previously reliable (but slower) turbo 4
You know one of the things I'm looking forward to when I LS swap my car?
A car that doesn't pound my head in on the highway.
Who's to say that Trey wouldn't be faster with an SR20 swap, or even a dialed V8 swap? The problem I see is that most V8 swaps are done for the street, so are left at low power levels compared to what they're capable of, and have mild suspensions, "must haves" like AC and PS, etc.
Do we have weight figures for a dressed SR20 and a turbo BP, with their transmissions attached? The weight thing is intriguing.
Of course if you're really doing the swap for the weight, wait until the Hayabusa kit is released.. www.miatabusa.com
A car that doesn't pound my head in on the highway.
Who's to say that Trey wouldn't be faster with an SR20 swap, or even a dialed V8 swap? The problem I see is that most V8 swaps are done for the street, so are left at low power levels compared to what they're capable of, and have mild suspensions, "must haves" like AC and PS
, etc. Do we have weight figures for a dressed SR20 and a turbo BP, with their transmissions attached? The weight thing is intriguing.
Of course if you're really doing the swap for the weight, wait until the Hayabusa kit is released.. www.miatabusa.com
Yes, I'm one of those with AC and PS, along with about 40-60 pounds of insulation at the bottom of the car and along the tunnel. If it were a track car, it'd be a whole different setup, but having a stiff *** track car you drive on the street 90% of the time sucks. Kirkeys suck, no heat or AC sucks, no power steering with 275's sucks, and no carpet or radio SUCKS.
As stated towards Trey, once some of the dedicated track cars get the bugs worked out, you might see some decent lap times.
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10-11-2010, 05:03 PM
#56
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Dean Thomas (dtfastbear on forums IIRC) is the fast LS guy in Cali. He was doing 1:49s at Infineon during shakedown on Spec suspension with no aero. With aero and I assume some other changes, he just ran a 1:45.x this past weekend. My fast lap at ~265whp was a 1:47.2. The guy has some serious talent, and the car is fast. (SM record at Infineon is in the 1:54-1:56 range IIRC)
The penalty will always be weight, though. I would pull on Dean in a straight line when I was making 265whp and he was making ~300whp - my car is something like 150lbs lighter than his was back then. Equal power, IMO a turbo car will be faster, but it's damn close.
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