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Old 09-30-2010, 12:16 PM   #21
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The SR20 is a freakin awesome engine with much more potential than a BP. However, I have to agree with everyone on price - and yep, you still have to build the SR, and yep, there are alot of parts missing, and yep it is a long way from PnP...

Doesn't make sense at that price. +1 for spending the money on a BP build.
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Old 09-30-2010, 12:17 PM   #22
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Quote:
Originally Posted by hustler View Post
BP if you want to go fast, V8 if you want to hard park.
Or go in the middle and lap/outpark them all.
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Old 09-30-2010, 12:22 PM   #23
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Quote:
Originally Posted by Splitime View Post
Or go in the middle and lap/outpark them all.
But how would you do that?

They're such totally different monsters...
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Old 09-30-2010, 01:44 PM   #24
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Quote:
Originally Posted by Bond View Post
Sorry, but a BP or a V8 are the only thing worth swapping in to your 90-93 miata.

Wot? the miata should have come with the SR originally - factory turbo aluminum block.

in my book it beats the v8 too because you can get good power out of a sr and still keep the car light. mine (co-owned with brian h) is 2286 wet. thats with cage, headlights, windshield wipers and all that stuff.

essentially, weight wise, you are trading an iron block for an aluminum block and getting the turbo hardware for free.

Quote:
Originally Posted by UrbanSoot
Doesn't look too bad but I can't judge until I see it in person or read a review from someone who is very badass on track. The swap itself definitely makes sense if you get an 8.8 Ford rear end along with it. Driveshaft can be made for pretty cheap locally (almost everywhere you can get it for around or under $350).

Aftermarket for SR20 is huge and motors are really easy to find and don't really cost all that much. If you shop around, you can get the whole swap done for under $6k. Average LS-1 swap comes down to about $10-12k so that leaves you with about $4-6k to build the motor.
i don't see any reason why you can't use the 1.8 torsen. i'm using a 3.9 to get long gearing. ur right, driveshaft was just about 350.
also right that motors are cheap right now and the aftermarket is huge. it would sure be fun if i had any money
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Old 09-30-2010, 01:50 PM   #25
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if you think that shitstained SR comes even close to an LSx swap in any way you are out of your mind
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Old 09-30-2010, 01:56 PM   #26
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But how would you do that?

They're such totally different monsters...
Well... in between 4 and 8 is 6!
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Old 09-30-2010, 01:56 PM   #27
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that price includes the engine & tranny.... right?
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Old 09-30-2010, 02:06 PM   #28
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Quote:
Originally Posted by 18psi View Post
if you think that shitstained SR comes even close to an LSx swap in any way you are out of your mind
2286lbs/350 whp= 6.5
2500lb/375 whp = 6.6
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Old 09-30-2010, 02:13 PM   #29
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Quote:
Originally Posted by Splitime View Post
Well... in between 4 and 8 is 6!
So are 5 and 7...but I still don't get your point.


Quote:
Originally Posted by soviet View Post
that price includes the engine & tranny.... right?
LOL...well played.
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Old 09-30-2010, 02:16 PM   #30
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Quote:
Originally Posted by jasonb View Post
2286lbs/350 whp= 6.5
2500lb/375 whp = 6.6
Umm, area under the curve?
Also, with a couple choice bolt ons the ls will do 500+ easy while the SR won't go over 400 (if that) without a full on build.


No replacement for displacement
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Old 09-30-2010, 02:56 PM   #31
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Quote:
Originally Posted by 18psi View Post
Umm, area under the curve?
Also, with a couple choice bolt ons the ls will do 500+ easy while the SR won't go over 400 (if that) without a full on build.


No replacement for displacement
i haz idea u were gon make me integrates. lets do a paper race, cause its cheaper

hows dat integrates?



but yeah, 33psi... thats street only.

more realistically, you could probably sustain something close to this with e85 (blue line is twin-scroll)


ref: http://www.full-race.com/catalog/pro...oducts_id=1748

i've always been more of a specific output kind but maybe i should borrow me a ride in a v8 miata and see.

an important point when y'all doing the calculus of $3k for the swap hardware. it gets you a gearbox which handles 400hp for free. putting a 400hp capable gearbox onto a bp requires $3k in quaife parts, does it not?
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Old 09-30-2010, 03:01 PM   #32
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Quote:
Originally Posted by 18psi View Post
Umm, area under the curve?
Also, with a couple choice bolt ons the ls will do 500+ easy while the SR won't go over 400 (if that) without a full on build.


No replacement for displacement
This. I think an RB20 would be killer in our car. Or a CA18. I think this kit would work well with a CA too. I just don't see the price of this swap. I bet he wants a grand for just the brackets. With this being the price, I think it would be more reasonable to measure up and get someone else to fabricate. Now if it included the driveshaft and some way to make the engine management work, well then the price wouldn't be so bad. If you could just use the brackets for 500 or so, then do the RB20 it would be *******. However, I would only consider these if i could have the car running for less than 4-5k involved. If i am going to spend that much, I would do an LS swap. I still have yet to ride in a LS car btw. So if someone wants to hook me up... Let me know. Everyone acts like you cant just toss a cam in a ls motor and some other bolts ons and not be 400-500.

Edit: I think the 6 speeds can handle what the sr trans will do.
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Old 09-30-2010, 03:03 PM   #33
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Quote:
Originally Posted by chicksdigmiatas View Post
This. I think an RB20 would be killer in our car. Or a CA18. I think this kit would work well with a CA too. I just don't see the price of this swap. I bet he wants a grand for just the brackets. With this being the price, I think it would be more reasonable to measure up and get someone else to fabricate. Now if it included the driveshaft and some way to make the engine management work, well then the price wouldn't be so bad. If you could just use the brackets for 500 or so, then do the RB20 it would be *******. However, I would only consider these if i could have the car running for less than 4-5k involved. If i am going to spend that much, I would do an LS swap. I still have yet to ride in a LS car btw. So if someone wants to hook me up... Let me know.

Edit: I think the 6 speeds can handle what the sr trans will do.
No to the RB20. It is such a HEAVY f'ing motor. INLINE 6... long SOB and fully cast iron. Overweight in our cars without question.
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Old 09-30-2010, 03:09 PM   #34
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Quote:
Originally Posted by jasonb View Post
i haz idea u were gon make me integrates. lets do a paper race, cause its cheaper

hows dat integrates?



but yeah, 33psi... thats street only.

more realistically, you could probably sustain something close to this with e85 (blue line is twin-scroll)


ref: http://www.full-race.com/catalog/pro...oducts_id=1748

i've always been more of a specific output kind but maybe i should borrow me a ride in a v8 miata and see.

an important point when y'all doing the calculus of $3k for the swap hardware. it gets you a gearbox which handles 400hp for free. putting a 400hp capable gearbox onto a bp requires $3k in quaife parts, does it not?
You just proved my point: that thing puts down puny power/torque til about 4000+.

And a miata 6 sp can be had for about 600 and will handle 400.


So built bp ~2k + 6 speed ~600 and you have a 400hp capable miata for 2600.

Like I said before: the only real upside to the sr swap is the free stock turbo hardware. which you'd have to upgrade to make over mid 200's anyway.
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Old 09-30-2010, 03:19 PM   #35
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Quote:
Originally Posted by 18psi View Post
You just proved my point: that thing puts down puny power/torque til about 4000+.

And a miata 6 sp can be had for about 600 and will handle 400.


So built bp ~2k + 6 speed ~600 and you have a 400hp capable miata for 2600.

Like I said before: the only real upside to the sr swap is the free stock turbo hardware. which you'd have to upgrade to make over mid 200's anyway.
This. I thought it out, and considered this before I ever went turbo. And by the time I did the swap, then had to upgrade all the crap on the SR to make what I wanted, I would have a faster BP for a lower price.
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Old 09-30-2010, 03:21 PM   #36
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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.
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Old 09-30-2010, 03:23 PM   #37
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We are not talking about track cars here.

Street cars, bottom line: LSx will always be superior to an SR swap.

Which is my point:
either build a BP or swap in an LS. No point for these oddball swaps.

But if someone does it just to be "different" Its whatever. Their money not mine.
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Old 09-30-2010, 03:34 PM   #38
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I've got a CBX motor sitting in my garage (spare)...just waiting for someone to make me an overpriced swap kit.
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Old 09-30-2010, 04:37 PM   #39
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Quote:
Originally Posted by 18psi View Post
We are not talking about track cars here.

Street cars, bottom line: LSx will always be superior to an SR swap.
sorry, my bad. i thought we were trying to make a fast miata, not a 8/10 scale camaro.
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Old 09-30-2010, 04:42 PM   #40
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fast street miata =/= fast track miata.

Nice ******* try though.
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
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