FC Mazdaspeed engine mounts of FD?
#1
FC Mazdaspeed engine mounts on FD?
Hello
Simple question: Does anyone have experience with using the FC Mazdaspeed / Competition engine mounts on the FD?
They are much cheaper ($100 vs $800 per pair) and very similar to the common polyurethane variants in shape/size. Its also the same hardness as the FD Mazdaspeed / competition mounts.
I will pair them up with a set of rubber mazdaspeed differential mounts (Im NVH allergic).
Simple question: Does anyone have experience with using the FC Mazdaspeed / Competition engine mounts on the FD?
They are much cheaper ($100 vs $800 per pair) and very similar to the common polyurethane variants in shape/size. Its also the same hardness as the FD Mazdaspeed / competition mounts.
I will pair them up with a set of rubber mazdaspeed differential mounts (Im NVH allergic).
Last edited by Zepticon; 04-29-20 at 07:27 AM.
#2
RX-7 Bad Ass
iTrader: (55)
Do you have a part number for the mounts pictured? Those are not FC mounts.
FC comp mount -
The comp mount is part number FBY1-39-040 and the standard mount is part number FB01-39-040A.
The FC mounts are too large and thick to fit the FD. I'm wondering what the mounts you have pictured are for, maybe a Miata?
Dale
FC comp mount -
The comp mount is part number FBY1-39-040 and the standard mount is part number FB01-39-040A.
The FC mounts are too large and thick to fit the FD. I'm wondering what the mounts you have pictured are for, maybe a Miata?
Dale
#3
They are not NA or NB Miata at least.
I was pretty sure that it was FC without the «cap» on, altho i have no evidence or part numbera except the pics.
The pictures are from FD Specialist (Marcus Read from Oz), and he was pretty tight lipped about the origin, but claimed they are Mazdaspeed.
Thus my conclusion is that they came from the FC, as it is the only other «mazdaspeed» optioned car with 13b. Renesis mounts look very different.
I was pretty sure that it was FC without the «cap» on, altho i have no evidence or part numbera except the pics.
The pictures are from FD Specialist (Marcus Read from Oz), and he was pretty tight lipped about the origin, but claimed they are Mazdaspeed.
Thus my conclusion is that they came from the FC, as it is the only other «mazdaspeed» optioned car with 13b. Renesis mounts look very different.
#4
RX-7 Bad Ass
iTrader: (55)
Looking at the picture again it really looks like the mount without the steel "hat" at the top. On the FC that steel hat is typically bonded to the mount. They may have done a cost-reduced version that you are supposed to reuse the steel hat or something.
You may want to post in the 2nd Generation section and see if anyone there knows about it.
Dale
You may want to post in the 2nd Generation section and see if anyone there knows about it.
Dale
#5
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interesting, i've seen these for sale on YJA, and i just assumed that they were FC mounts with the top machined off (which would work BTW, essentially what i have in mine)
i wonder if Mazdaspeed started selling FD mounts without the brackets? that must knock a lot off the price
i wonder if Mazdaspeed started selling FD mounts without the brackets? that must knock a lot off the price
#6
Rotary Freak
Looks like the ones rx72c(??) sells too, you might be getting plugged up the behind, without a reach around, on price - although shipping is crazy atm!
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#7
JM1FD since 1999
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The seller on YAJ lists the pair for 11,000 Yen. This is a translated description:
Product name
RX-7 (FD3S) Late reinforced engine mount
Introduction of left and right set products
I was asked by an acquaintance to make some of them, which were well received and were exhibited.
Since the FD Mazdaspeed engine mount is expensive, it is hard to buy.
If it is a later engine mount, I think that only the mount part will come off.
Mazdaspeed engine mount for FC3S is processed and used for the mount part.
This is a new FC Mazdaspeed engine mount processed for FD.
The stay part is not included. Only the mount part.
Product name
RX-7 (FD3S) Late reinforced engine mount
Introduction of left and right set products
I was asked by an acquaintance to make some of them, which were well received and were exhibited.
Since the FD Mazdaspeed engine mount is expensive, it is hard to buy.
If it is a later engine mount, I think that only the mount part will come off.
Mazdaspeed engine mount for FC3S is processed and used for the mount part.
This is a new FC Mazdaspeed engine mount processed for FD.
The stay part is not included. Only the mount part.
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Zepticon (06-22-20)
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#8
The seller on YAJ lists the pair for 11,000 Yen. This is a translated description:
Product name
RX-7 (FD3S) Late reinforced engine mount
Introduction of left and right set products
I was asked by an acquaintance to make some of them, which were well received and were exhibited.
Since the FD Mazdaspeed engine mount is expensive, it is hard to buy.
If it is a later engine mount, I think that only the mount part will come off.
Mazdaspeed engine mount for FC3S is processed and used for the mount part.
This is a new FC Mazdaspeed engine mount processed for FD.
The stay part is not included. Only the mount part.
Product name
RX-7 (FD3S) Late reinforced engine mount
Introduction of left and right set products
I was asked by an acquaintance to make some of them, which were well received and were exhibited.
Since the FD Mazdaspeed engine mount is expensive, it is hard to buy.
If it is a later engine mount, I think that only the mount part will come off.
Mazdaspeed engine mount for FC3S is processed and used for the mount part.
This is a new FC Mazdaspeed engine mount processed for FD.
The stay part is not included. Only the mount part.
Next question is can my OCD live with anything less than OEM FD even with the price they are sold at...
#10
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yes! the actual mount part is the same size FC vs FD, i basically did this a few years ago when i built my car (FC with an REW) and its fine.
#11
RX-7 Bad Ass
iTrader: (55)
Interesting. I wonder if the seller is somehow removing the metal cup or has found a source for just the mounts without the cup.
Regardless is there a good source for these?
Dale
Regardless is there a good source for these?
Dale
#12
JM1FD since 1999
iTrader: (15)
Here is the YAJ auction link:
https://page.auctions.yahoo.co.jp/jp/auction/j649161614
Mazda Motorsports sells each FC competition mount for 37.xx, for those interested in tackling the removal of the cup and not pay the markup from the seller on YAJ.
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DaleClark (06-22-20)
#14
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it would be really easy to chuck the FC mount in a lathe and take off the top, but the YJA guy's cut is so clean it looks factory
#15
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Last edited by Sgtblue; 06-23-20 at 07:17 AM.
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Zepticon (06-23-20)
#16
Tight-lipped huh. —-> https://fdrx7.com/forum/showthread.p...ghlight=Marcus
And he came through with the seatbelt clips and the belt hole covers for the RZ seats. Im pretty sure the hole covers are not OEM (no oem bag like the other parts) but he said its the same. So my guess is that its the ones Recaro sells for their seats.
He is also pretty hard to communicate with, like the other Australian selling his turbos and intercoolers here on this forum.
So thats why i always doublecheck to confirm anything coming from him
#18
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#19
Junior Member
Update
I purchased the Mazda speed mounts in hopes of figuring out just what needs to be done to get them in my fd. Anyone have any suggestions on where I should start?
Am I cutting this thing up and drilling a hole through it or trying to heat it up and separate it.
Am I cutting this thing up and drilling a hole through it or trying to heat it up and separate it.
#20
RX-7 Bad Ass
iTrader: (55)
I think whoever was modding those FC mounts for an FD was cutting them in a lathe or some sort of machine operation.
The top stud is part of the metal "hat" and the rubber is bonded to that on the bottom side.
I think the technique is to cut off the bulk of the metal hat that isn't needed.
Dale
The top stud is part of the metal "hat" and the rubber is bonded to that on the bottom side.
I think the technique is to cut off the bulk of the metal hat that isn't needed.
Dale
#22
Junior Member
I don't know what I'm doing exactly yet.
I don't exactly know what I'm doing but I'm learning and having fun. I've got an idea or two in my head and this is what I've done so far. I'm sure I'm going to make alot of people unhappy here.
#24
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it might actually. the FC uses that top cup and a bottom "stopper"*** to keep the engine in the car if the mount fails. the FD uses those straps. you should use something
*** the stopper might actually limit engine movement under power too, like the Rx8, TBD though
*** the stopper might actually limit engine movement under power too, like the Rx8, TBD though
#25
RX-7 Bad Ass
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Really, that's not too bad in the pics.
I could see that hat hitting the subframe on the FD since the motor mounts sit down in the pocket of the frame.
I'll put it this way, I would be VERY tempted to do this myself next time I need motor mounts!
Dale
I could see that hat hitting the subframe on the FD since the motor mounts sit down in the pocket of the frame.
I'll put it this way, I would be VERY tempted to do this myself next time I need motor mounts!
Dale