New Crank Dampener Option
#1
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I saw this this morning and figured I'd share. It looks like Fluidampr has released a model for the Mazda B series motors.
https://motoiq.com/new-fluidampr-per...eries-engines/
Mazda Miata-B Series Engine
https://motoiq.com/new-fluidampr-per...eries-engines/
Mazda Miata-B Series Engine
#3
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The failure mode is in the oil pump gears and crank deflection. Both can be solved other ways but it is a good idea to get a damper. A balanced rotating assembly and oil pressure relief valve are both good ways to solve the issue then add a BE oil pump and damper and youre bullet proof
Seems like a nice piece. What concerns me in my situation is the different belt that they say you need to run. So if anyone is running a larger alternator off of a RX7 we dont know it it will work. otherwise it is a nice piece.
Seems like a nice piece. What concerns me in my situation is the different belt that they say you need to run. So if anyone is running a larger alternator off of a RX7 we dont know it it will work. otherwise it is a nice piece.
#4
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oil pump gears is a whole different problem.
there a reason the old ati damper had the 4 small bolts eliminated and the bhj/supermiata also. it looks like they are trying to cater to class racing
there a reason the old ati damper had the 4 small bolts eliminated and the bhj/supermiata also. it looks like they are trying to cater to class racing
The failure mode is in the oil pump gears and crank deflection. Both can be solved other ways but it is a good idea to get a damper. A balanced rotating assembly and oil pressure relief valve are both good ways to solve the issue then add a BE oil pump and damper and youre bullet proof
Seems like a nice piece. What concerns me in my situation is the different belt that they say you need to run. So if anyone is running a larger alternator off of a RX7 we dont know it it will work. otherwise it is a nice piece.
Seems like a nice piece. What concerns me in my situation is the different belt that they say you need to run. So if anyone is running a larger alternator off of a RX7 we dont know it it will work. otherwise it is a nice piece.
#5
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Can you post up the link to the bolt problem. Not questioning you just haven't seen it and its relevant in this thread for anyone else reading.
Edit:
Couldn't find anything related to bolt failures when searching only oil pump failures. The only thing i can think of is when bolting it on any balance that the damper had pretty much goes out the window.
Edit:
Couldn't find anything related to bolt failures when searching only oil pump failures. The only thing i can think of is when bolting it on any balance that the damper had pretty much goes out the window.
Last edited by matrussell122; 07-23-2018 at 12:28 PM.
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The only thing I've seen about the older ATI failures was a friend of mine, but his case was extreme. He was running 300-350whp before many of us were even thinking about Miata's. He was also running the motor up to 9000k at auto-xes and 8000k at the track. He only had the bolts fail on him once and luckily the motor just shut off (ECU lost timing and shut down). I'll have to ask him what he replaced it with or if he just go stronger bolts.
#7
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Can you post up the link to the bolt problem. Not questioning you just haven't seen it and its relevant in this thread for anyone else reading.
Edit:
Couldn't find anything related to bolt failures when searching only oil pump failures. The only thing i can think of is when bolting it on any balance that the damper had pretty much goes out the window.
Edit:
Couldn't find anything related to bolt failures when searching only oil pump failures. The only thing i can think of is when bolting it on any balance that the damper had pretty much goes out the window.
Picture of said crank pulley in the dirt
Here it is bouncing past the rear wheel
![](https://www.miataturbo.net/attachments/build-threads-57/151855-rebuild-all-salvage-miatas-***-hw1v9aj.jpg?dateline=1444008046)
#10
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I always question what bolt grade people have used to hold their pulley on. The parts store bolts are usually only Grade 8.8 (basically grade 5, medium strength). Fluidampr lists theirs as Grad 12.9 which exceeds Grade 8 strength. Then there is the question of how many times they've been stretched from over tightening.
#19
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I have had good luck with the Advanced Autosports upgraded damper bolts. They have the 16mm and 25mm lengths, and water pump pulley bolts too.
https://www.advanced-autosports.com/...olts-and-studs
https://www.advanced-autosports.com/...olts-and-studs