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RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections |
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01-18-2010, 09:00 AM | #1 |
Rotary Fan in Training
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So what is a 12a worth now?
With the 12a now gone from Mazda, what is the value of a good used one now? I have been told not to accept anything less than $800 for it, and I have been told if I parted the engine, I could get in excess of $1000 for it.
Long story short, I have one that has 40k miles on it (rebuilt), with good compression. I also have a factory replacement with around 35k mikes it. What is the value of these engines? |
01-18-2010, 09:25 AM | #2 |
RCC Contributor
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That seems like a bit of a stretch. I recently paid 250 for a running motor, 67k on it with no rebuild.
If it were a recent rebuild, then I could see 800 or so. .
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"Learn from the past, or it will become your future...." '85 GS 12a + LSD/Sterling carb/Respeed coilovers/Respeed front swaybar/Respeed adj. rear spring perches/Illuminas/Bilsteins on rear AutoX vids @ http://www.youtube.com/user/Kentetsu1 |
01-18-2010, 10:14 AM | #3 |
RCC Addict
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The cost will always be driven by demand - unfortunately, most guys will opt to throw a 13B in their car when the 12A gives out. This will become more true as time goes on and 12A parts get harder to find. Just because its limited quantity doesnt always mean its going to drive up cost.
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01-19-2010, 03:09 PM | #5 | |
Rotary Fan in Training
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However, I have been hoarding 12A parts because I want an old school project/race car, so I'm going to be using carbon apex seals. |
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01-19-2010, 03:44 PM | #6 |
Talk - Action = Nothing
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Yes, as stated, the race classes that mandate 12As will be where the demand comes from. This will subside when the sanctioning bodies are bombarded with request from competitors for a cheaper alternative. Normally takes a good number of years from parts becoming NLA - but it will happen.
-billy |
01-18-2010, 12:18 PM | #7 |
At the dirt track.
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I sell good used 12A motors for $650 with core. These are tested with our RE compression tester to ensure it has good compression. We also test coolant pressure making sure it proplerly hold, and there are no leaks in the system. Also the oil pressure is tested. We have had success selling our used 12A motors at this price for some time now. A rebuilt 12A can range from $1600-$2400, depending on mods.
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Rollin like a reuleaux. Unstoppable. |
01-18-2010, 01:56 PM | #8 |
tumor-syphilis-itis-osis
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i've tried selling my fully built boosted 12a for some time now and I never get offers over 1200 for everything so 1600 is a stretch unless your a company and offer a warranty- i've gotten several good running 12a's for 200-300$ and that is very normal, i've never had trouble finding them
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82 300d 82 Gsl 84 b2200 Diesel 88 gxl |
01-19-2010, 12:47 PM | #9 | |
At the dirt track.
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Considering all that goes into one of my builds $1600 is a good deal. I could build one for a lot less, but you would not be happy with the results, and as a builder, I will not do this. All parts out of spec are replaced, including housing. Plates are lapped to spec, all new seals, o-rings and gasket. I use OEM parts also. Plus the time it takes. You do the math.. Its a good deal on a motor that will last you many many miles.
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Rollin like a reuleaux. Unstoppable. Last edited by 91GSL-SE; 01-19-2010 at 12:53 PM.. |
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01-20-2010, 12:43 AM | #10 | |
tumor-syphilis-itis-osis
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82 300d 82 Gsl 84 b2200 Diesel 88 gxl |
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01-22-2010, 09:18 AM | #11 | |
Rotary Nut Case
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You do get what you pay for. I think that the best rebuilt engine write up i ever saw was done by mazdatrix in one of their hard catalogs i don't know if it is on their website but the jist was anyone can build a motor out of a pile of crap that can last 12months (in a street car that is) As for the value of an engine. I have been severely burned lately by used engines and it is for that reason i don't recommend buying them at all regardless of their pedigree. on the other forum i am listed a BAD GUY because someone bought an engine from my friend (i hooked them up and made the deal happen my involvement) that was supposed to be a low mileage engine it was sold for around 800 in parts and money and it turned out to be bad in less than 30 days after install. Now it was compression tested and it was coolant pressure tested but that doesn't always mean that it is good. When I am buying a used engine I really only look at it as if it is a core... and when i sell a used motor I (me that is I can't speak for my friends obviously) tell the buyer up front that it may last a long time or no time at all. bottom line it is a used motor that we (usually) don't know the whole history on. What do I think is a good price for a core 200$ no more at this time not willing more and that would be for an unopened motor. What do I think is a good price for a used motor no more than 800$ and I would have to see it run in a car and preferably under some type of load. Just because it runs doesn't mean it is good. I would suspect the motor to be bad if when I am coming to check it out it has already been warmed up. What do I think is a good price for a rebuild 1600 is on the low end and although it may be a very good motor i would want to know what went into building it... specifically what parts and who made them.... there are companies out there that make really cheap parts that aren't all that good but they are new and they will last a couple of years. Also about a rebuild that doesn't include special engines and porting and special prep... these guys are professionals you will get what you pay for but you will also get a warranty as well. |
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01-18-2010, 06:00 PM | #13 | |
Rotary Fan in Training
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I am with everyone else though. When my 12a lets go, a 13b will be in its place. If I could sell both of these 12a's for decent money...I would in a heart beat and just get a 13b. |
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