Remanufactured engine updates
08-13-2019, 09:12 AM
#3
I don't know if they all do, but it seems many do, yes. Perhaps the threshold for scrapping a housing, instead of reusing, changed when Mazda took back over the remanufacturing process.
Tonik, that sounds exactly why there is no warranty unless installed by the dealer...
Tonik, that sounds exactly why there is no warranty unless installed by the dealer...
Last edited by Loki; 08-13-2019 at 09:16 AM.
08-13-2019, 09:16 AM
#4
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https://www.rx8club.com/series-i-tec...enesis-267220/
https://www.rx8club.com/series-i-tec...azmart-265994/
Mine was great. Only issue was that the threads for one of the oil injector ports were a little chowdered up. A few minutes with some gentle tap work to clean them up and she was golden.
I tested compression at 140 miles and it was 104 - 105 psi @ 250 RPM
I tested again at 800 miles and it was 106 - 114 psi @ 250 RPM.
My engine went in at 67k miles. I sold it to my friend at 74k miles and the compression was 111 - 122 psi @ 250 RPM.
Compare this to the craptacular OJ Imports rebuild which was 85 - 90 psi @ 250 RPM after 1 year, 10k miles.
I wonder if you had an underlying issue that caused the rapid deterioration with your reman.
This is why I did a whole ton of crap when my engine was out.
I tested the vacuum solenoids, vacuum check valves, oil injectors, fuel injectors, grounds, coils/plugs/wires, OMP tubing, vacuum lines, etc. I ended up replacing 3 oil injectors and two solenoids. The fuel injectors were sent to Witchhunter Performance for cleaning and flow testing. Grounds were cleaned up and got fresh dielectric grease. I upgraded the ground strap from the LIM to the chassis under the air pump.
Last edited by NotAPreppie; 08-13-2019 at 09:21 AM.
08-13-2019, 09:39 AM
#6
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I think it was a bad build as the under pan was leaking oil too..
It's running fine except for hot start issue.
Cat is not clogged as it was checked when the engine was removed.
It's running fine except for hot start issue.
Cat is not clogged as it was checked when the engine was removed.
Last edited by tonik; 08-13-2019 at 10:19 AM.
08-13-2019, 12:09 PM
#7
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It is hard to say as Mazda isn't very transparent with their rebuild process. It is suspected that due to a low number of suitable used housings available, that Mazda has been using new housings, but it isn't confirmed, just theorized from the trend owners and builders have noted.
NotAPreppie and I both purchased engines recently, I think his was a February 2018 build, my last reman engine was a July 2018. Both had new housings, mine had new at least two new irons and new rotors (and I suspect his did as well). The only used parts my motor clearly had were some hardware, the front cover, and the oil pan.
NotAPreppie and I both purchased engines recently, I think his was a February 2018 build, my last reman engine was a July 2018. Both had new housings, mine had new at least two new irons and new rotors (and I suspect his did as well). The only used parts my motor clearly had were some hardware, the front cover, and the oil pan.
Last edited by furansu; 08-13-2019 at 12:36 PM.
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08-15-2019, 09:48 AM
#12
You gonna eat that?
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08-15-2019, 10:46 AM
#13
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There have been a number of old and superseded part numbers. In some cases, the old part number had a much higher price than the new one but that doesn't mean that the part itself has changed significantly.
08-15-2019, 05:12 PM
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The AT and MT shortblocks are the same for 2009+.
Also, the AT and MT shortblocks for 2006 through 2008 are the same (though, obviously, different from 2009+).
Also, the AT and MT shortblocks for 2006 through 2008 are the same (though, obviously, different from 2009+).
Last edited by NotAPreppie; 08-15-2019 at 05:14 PM.
08-15-2019, 06:14 PM
#16
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Since that isn't a Mazda official parts supplier, it's hard to say whether or not that is actually a "brand new engine". At those prices, they aren't.
That being said, it is likely that there were indeed brand new engines available at some point, but only sold through specific channels to specific customers, such as the Star Mazda series. It is also likely that Mazda never did that, and there has been a severe lack of any evidence that there were new engines.
All water under the bridge now. Unless there is some miraculous increase in the quality of remans (I've been out of touch for a few years), any reman purchased should still be overhauled before installation. Way too much sealant clogging the cooling system was a common cause of overheating for remans after a few thousand miles. RotaryResurrection had several threads in the past showing the range of issues for reman engines he was finding. I don't know if they are still around.
That being said, it is likely that there were indeed brand new engines available at some point, but only sold through specific channels to specific customers, such as the Star Mazda series. It is also likely that Mazda never did that, and there has been a severe lack of any evidence that there were new engines.
All water under the bridge now. Unless there is some miraculous increase in the quality of remans (I've been out of touch for a few years), any reman purchased should still be overhauled before installation. Way too much sealant clogging the cooling system was a common cause of overheating for remans after a few thousand miles. RotaryResurrection had several threads in the past showing the range of issues for reman engines he was finding. I don't know if they are still around.
08-15-2019, 11:49 PM
#17
Smoking turbo yay
I mean, there is a chance there are some leftover brand new engines sitting in a warehouse somewhere, but you probably have to know the right people to get your hands on them. Something like that.
RIWWP: there is a big increase in quality of remans. Remans nowadays are made by Mazda themself in Japan and they are pretty good. Several established members(NotAPreppie, SteveDallas, etc.) here have them installed recently and they are all pretty satisfied. Mazmart even did a teardown of a recent reman and it's very solid.
RIWWP: there is a big increase in quality of remans. Remans nowadays are made by Mazda themself in Japan and they are pretty good. Several established members(NotAPreppie, SteveDallas, etc.) here have them installed recently and they are all pretty satisfied. Mazmart even did a teardown of a recent reman and it's very solid.
08-16-2019, 01:26 AM
#18
08-16-2019, 01:29 AM
#19
Since that isn't a Mazda official parts supplier, it's hard to say whether or not that is actually a "brand new engine". At those prices, they aren't.
That being said, it is likely that there were indeed brand new engines available at some point, but only sold through specific channels to specific customers, such as the Star Mazda series. It is also likely that Mazda never did that, and there has been a severe lack of any evidence that there were new engines.
All water under the bridge now. Unless there is some miraculous increase in the quality of remans (I've been out of touch for a few years), any reman purchased should still be overhauled before installation. Way too much sealant clogging the cooling system was a common cause of overheating for remans after a few thousand miles. RotaryResurrection had several threads in the past showing the range of issues for reman engines he was finding. I don't know if they are still around.
That being said, it is likely that there were indeed brand new engines available at some point, but only sold through specific channels to specific customers, such as the Star Mazda series. It is also likely that Mazda never did that, and there has been a severe lack of any evidence that there were new engines.
All water under the bridge now. Unless there is some miraculous increase in the quality of remans (I've been out of touch for a few years), any reman purchased should still be overhauled before installation. Way too much sealant clogging the cooling system was a common cause of overheating for remans after a few thousand miles. RotaryResurrection had several threads in the past showing the range of issues for reman engines he was finding. I don't know if they are still around.
08-16-2019, 07:21 AM
#20
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All water under the bridge now. Unless there is some miraculous increase in the quality of remans (I've been out of touch for a few years), any reman purchased should still be overhauled before installation. Way too much sealant clogging the cooling system was a common cause of overheating for remans after a few thousand miles. RotaryResurrection had several threads in the past showing the range of issues for reman engines he was finding. I don't know if they are still around.
https://www.rx8club.com/series-i-tec...azmart-265994/
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