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Thread: Blackbird Fabworx NA / NB engine drop mounts

  1. #1
    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    Default Blackbird Fabworx NA / NB engine drop mounts

    We've been working on a number of new products for the Miata guys, one of which is an idea I had a long time ago and finally had the time to put it together - engine drop mounts for the NA / NB.
    The mounts will be built in at least 2 versions - mounts that drop the engine approximately 0.5" and mounts that retain standard mounting height, both will be available with either 70A or 88A bushings.
    We're also looking at the possibility of producing another version that will have lower NVH than what this style mounts typically add, if this tests well we will produce it in both lowered and standard height as well.
    The lower height sets the oil pan flush with the bottom of the subframe.

    This mounts are legal for a number of racing classes including NASA PT where it's a ZERO points mod!

    Here's our first prototype set (lowered setup shown) -


    Driver side installed -


    Passenger side installed -


    Pricing has yet to be finalized but should be in the ballpark of other products available.
    The production units will differ slightly from the prototype shown because we found a little more weight to remove (which we already did a good bit of), finish is going to be the same Pearl Gunmetal Gray powder coat shown.
    Stay tuned for product spec updated, final version photo and pricing!
    Last edited by Blackbird; 06-20-2016 at 12:15 PM.

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    Administrator ucfbrett's Avatar
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    How do these mounts affect the angle of the PPF and pinion?

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    There's a change of a quarter degree at the pinion angle which is essentially nothing.
    There's no change in driveline alignment since everything moves together with the PPF in place.

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    Senior Member robburgoon's Avatar
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    Quote Originally Posted by ucfbrett View Post
    How do these mounts affect the angle of the PPF and pinion?
    The ppf still attaches the diff to the transmission, the factory adjustment spec relative to the frame rails might be a little off with that change, but not sure it matters otherwise.

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    Very nice Moti. Those look sweet. Every bit counts when it comes to lowering the CG.

    An old SM trick.. ok cheat.. remove the steel cups and flip the rubber motor mounts upside down. Cut off the locating nubs on the engine side of the motor mount. Lowers the engine about a 1/4" or so.

    Mark
    AiM Data and Video systems, Suspension Setup, Race car builds, support, and rentals. At your beck and call.

    Mark Nichols
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    http://www.ironcanyonmotorsports.com

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif emilio700's Avatar
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    Quote Originally Posted by markn View Post
    Very nice Moti. Those look sweet. Every bit counts when it comes to lowering the CG.

    An old SM trick.. ok cheat.. remove the steel cups and flip the rubber motor mounts upside down. Cut off the locating nubs on the engine side of the motor mount. Lowers the engine about a 1/4" or so.

    Mark
    I though that if everyone including the guys on SMAC were doing it it was legal?

    j/k
    WWW.949RACING.COM
    SuperMiata

    Aside from their cost I never understood why people race them.
    But obviously I just dont get it. -fatbillybob

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    funny man...
    AiM Data and Video systems, Suspension Setup, Race car builds, support, and rentals. At your beck and call.

    Mark Nichols
    Iron Canyon Motorsports
    http://www.ironcanyonmotorsports.com

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    V2.0 of the drop mounts was welded and sent to powder coating yesterday, but before it did, we test fitted everything and I took a pic of the bottom of the oil pan and how it lines up with the bottom of the subframe with the drop mounts installed -


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    The Real Captain Slow Red_5's Avatar
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    In case you already didn't know this there are several slightly different NB subframes a with slightly different locating hole positions. I know this because I was an early adopter of the AWR engine mounts and mine didn't fit without modification. They changed how there's were made and sent me the newer version that I never used. Just a heads-up.
    Last edited by Red_5; 07-10-2016 at 08:11 AM.
    99 Mazda Miata SuperMiata #515 - AKA Sparky SOLD
    '91 Mariner Blue Miata project AKA Napoleon

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    Senior Member slodrew's Avatar
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    I'm not familiar with Miatas so I have to ask.. would it be possible to lower the differential in it's subframe to further lower the cg and to negate any concerns about the ppf angle?

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    There are no concerns about the PPF attachment to the trans because if anything, the lowered motor tilts the trans tail upwards, making it even less likely to leak..

    Just in case someone gets confused reading this - don't.
    The amount of slop in the holes on the PPF at the trans allows for far greater angle adjustment of the trans than what the drop mounts change.
    If your trans didn't leak before you put the mounts, it won't leak after.
    Last edited by Blackbird; 07-10-2016 at 07:16 AM.

  12. #12
    The Real Captain Slow Red_5's Avatar
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    Sorry, sometimes I forget Trackhq is more than friends talking about car stuff and I have my viewing setup as most recent posts so I don't pay attention to the section the posts originate from. I edited my earlier post.
    99 Mazda Miata SuperMiata #515 - AKA Sparky SOLD
    '91 Mariner Blue Miata project AKA Napoleon

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    New product from Blackbird Fabworx - Motor Mounts for the NA-NB chassis.
    They are available in a number of versions, so have a look at the options and pick your favorite flavor!
    We designed the mounts with a few key differences from mounts that are currently available, the two biggest differences being the availability of a lower NVH mount (AKA the Street Performance version) and the ability to drop the mounting height of the engine to improve the handling (more about this part in a minute).

    Our new motor mounts are designed as a complete replacement setup for the factory mounts (94-00 Street Performance drop mounts shown) -


    Available also for the 01-05 VVT engines with the extra mounting ear (01-05 Standard height mount shown minus hardware) -


    The artistic shapes are because we took the time to make sure we shave weight where possible while keeping the rigidity of the structure.
    Hardware is tip top grade 8 and the mounts are all going to come powder coated in the Pearl Gunmetal Gray powder coating that you see in the pics, because we like our functional parts to also look good!


    Choosing your favorite flavor part 1 - Street Performance mounts or Competition mounts

    The Street Performance mount (left) uses a much bigger bushing than the one of the Competition mount (right) -


    We tested the Mazdaspeed rubber mounts vs. our Competition mounts and the Street Performance (Low NVH) mounts back to back to back.
    We found that the Competition mounts made a night and day improvement in shifting but at the trade off of increased rattling and buzzing, particularly at lower RPM and especially on decel.
    The Street Performance mounts offered a very significant improvement in shifting though not quite as much as the Competition mounts, however NVH levels were kept completely streetable.
    There's a little bit more buzz, but it's not the kind of rattling that wears you out in 30 minutes.
    We designate the Competition mounts for the more dedicated track / autocross vehicles and advise anyone but the most hard core enthusiasts to stick to the Street Performance mounts for street driven cars.


    Choosing your favorite flavor part 2 - Standard height mounts or Drop mounts

    The mounting height of the drivetrain can be altered by lowering the attachment point of the motor mounts, we set our mounts ~1/2" lower so that the bottom of the oil pan is dead flush with the bottom of the subframe, as demonstrated in the pic a few posts above.
    The big benefit here being improved handling, and as our testing has proven there is a marked difference in performance to be had.
    This is due to the fact that taking a 350+ Lbs. lump and lowering it down in the chassis 1/2" lowers the center of gravity.

    The potential down side of the drop mounts is that they *might* not fit with every header / turbo / downpipe configuration available for the Miata and since there are far too many options available for us to be able to test and verify fitment, and so we leave it up to our customers to take some measurements and make the call on whether there's enough clearance or not.

    We did test clearance on our shop NB with the Racing Beat header which is probably the most popular header for Miatas, everything cleared just fine at the subframe and the rear flange was dead flush with our car's frame rails -


    The drop mounts are NOT recommended for cars with extremely low ride height.
    If your front subframe and / or frame rails are dinged or scratched from scraping as you drive, do yourself a favor and pick the standard mounting height version :thumbs:


    And with all that said, we are ready to take orders!

    Pricing is the same whether you pick the Street Performance or the Competition mounts, and whether you pick the standard mounting height or the drop mounts.
    The 94-00 set is selling for $255 plus shipping.
    The 01-05 set is selling for $280 plus shipping.
    Local pick up is available!

    Mounts for 90-93 cars coming soon.


    Please shoot me an email to place your order or call us at 818-339-3884, thanks! :wave:

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    A customer posted a cool video comparison on another forum -
    Quote Originally Posted by kollunz View Post
    Last week, I was at Laguna Seca for a trackday. Oh god, the difference in shifting was amazing, completely smooth and buttery every time.
    After reviewing my gopro footage from my previous trackdays, I noticed that my shift knob stopped moving back and forth with these new mounts! Totally satisfied and happy with these.

    Videos for those that are interested:

    Old mounts:
    https://youtu.be/OEsTobDixao

    BBFW mounts:
    https://youtu.be/ACItdbsHrQY
    The mounts are in stock and ready to ship!

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif Blackbird's Avatar
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    Default Blackbird Fabworx Miata Motor Mounts VS. OEM Mounts - video comparison


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