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-   -   Banzai-Racing's Transmission Crossmember review (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/banzai-racings-transmission-crossmember-review-1042141/)

<track>7 09-22-17 09:54 PM


Originally Posted by jza80 (Post 12215753)
Following up on this some more;

I replaced the original poly mount with the Autozone 2378 rubber mount recommended by <track>7, this noticeably improved NVH.

Compared to how it was before adding the Banzai-Racing trans mount there is still some added vibration, mostly noticed at idle with the AC on and at engine speeds above 6,000RPM but it is minimal. Most importantly, the raw gear whine at WOT that was being transmitted through the poly mount is almost completely gone.

I think this setup of the Banzai-Racing trans mount bracket and replacement rubber mount is probably the best compromise for increased driveline stiffness and NVH. The poly mount is surely better from a stiffness point of view, but the NVH trade-off was too severe for me.

On the Autozone mount: It was not a 100% bolt in, the mounting points for the upper side were too close together to work with the Banzai-Racing bracket and the mount needed to be notched for the bolts to fit through. Normally I would never do this as it likely compromises the rubber mount strength somewhat, but since the Banzai-Racing mount is just an addition to an existing system that does not necessarily require the extra bracket I rationalized it - for me, the alternative was removing the Banzai-Racing trans bracket and even with the notched replacement rubber mount there is still a very noticeable improvement in shifter stability (and, likely, reduced stress on the PPF).

So my vote on the Banzai-Racing trans brace/mount (with replacement rubber mount): :icon_tup:

Glad my experiments helped someone out!
FYI, be careful when posting anything regarding Banzai that doesnt agree with Chris(Banzai). You may not be allowed to purchase anything from them again. Speaking from personal experience related to this thread.

cib24 09-23-17 03:43 AM

An alternative is the RE-Wing transmission crossmember brace which is a very similar design but uses a rubber bushing. That means no increase in NVH like the Banzai brace. It is imported from Japane though so will be more expensive once it reaches your door.

https://www.rhdjapan.com/re-wing-tra...ount-fd3s.html

https://d1vv73x37cbx43.cloudfront.ne.../3/0344_11.JPG
https://d1vv73x37cbx43.cloudfront.ne.../6/56097-6.jpg

Banzai-Racing 09-23-17 07:41 AM


Originally Posted by <track>7 (Post 12218220)
Glad my experiments helped someone out!
FYI, be careful when posting anything regarding Banzai that doesnt agree with Chris(Banzai). You may not be allowed to purchase anything from them again. Speaking from personal experience related to this thread.

I have an idea where this is coming from. You emailed me about the GM part, I said I was aware of it and that it would be inferior. You thought I should be thanking you for teaching me something. You did not like my response and stated that you were never going to buy from us again. Then you posted the rubber part in this thread, there was no communication of any kind after that. You were never banned from our shop, that was a desicion you made.

I can post up the email if anyone is interested, but this thread is not about the drama that David has tried to start twice now in this thread. I just let it go last time, however I have a problem with continued BS

Now as far as any increase in NVH, on a car with healthy motor and diff mounts (stock or aftermarket) there is no noticeable increase of any kind. Many people are driving around on broken motor mounts and have no idea, since the metal arm is still sitting on the rubber puck. The oem motor and diff mounts are hydraulic, which means they are oil filled, when they rupture the oil leaks out leaving the empty rubber shell. On the early models the left side motor mount has an aluminum arm with a bonded rubber mount, that rips off.

As I said earlier in this thread, if installation has increased NVH, then check your mounts.
Ruptured diff mount
https://cimg5.ibsrv.net/gimg/www.rx7...d98dde52b7.jpg
broken motor mount
https://cimg4.ibsrv.net/gimg/www.rx7...8d0c0505ce.jpg


The RE wing uses the trans mounts from the FC, which fail even on the N/A model
https://cimg4.ibsrv.net/gimg/www.rx7...644922f7d4.jpg

<track>7 09-23-17 12:03 PM


Originally Posted by Banzai-Racing (Post 12218278)
I have an idea where this is coming from. You emailed me about the GM part, I said I was aware of it and that it would be inferior. You thought I should be thanking you for teaching me something. You did not like my response and stated that you were never going to buy from us again. Then you posted the rubber part in this thread, there was no communication of any kind after that. You were never banned from our shop, that was a desicion you made.

I can post up the email if anyone is interested, but this thread is not about the drama that David has tried to start twice now in this thread. I just let it go last time, however I have a problem with continued BS

The only continued BS is what's coming out of your mouth. Your arrogance knows no bounds and you've added liar to your list of talents as well. Congrats!

jsemerica 09-23-17 01:05 PM

Wow. I bought the banzai trans mount which wouldn't even fit, then I noticed my motor mounts were pretty much shot and one of the diff mounts was leaking. Replaced these with their street motor mounts and the differential with poly, then it fit perfectly and it really strikes the best balance between comfort and rigidity on my mostly stock street driven car. :icon_tup:

Banzai-Racing 09-23-17 01:39 PM


Originally Posted by <track>7 (Post 12218332)
The only continued BS is what's coming out of your mouth. Your arrogance knows no bounds and you've added liar to your list of talents as well. Congrats!

Too funny!! Literally laughing out loud. Arrogant....absolutely, liar however is something I am not, nothing but facts in my post which jsemeric just backed up.

There you have it folks, David's (<track>7) fragile little ego even gets slightly bumped and he lashes out with personal attacks.Exactly how he acted in his emails. Sellers and vendors need to stay clear of this guy. Anyone that wants to see his emails just PM me, I am not going to clutter this thread with his school girl drama, which is why I did not address his statements from 4 years ago.

jza80 09-23-17 05:04 PM

Good feedback
 

Originally Posted by Banzai-Racing (Post 12218278)

...Now as far as any increase in NVH, on a car with healthy motor and diff mounts (stock or aftermarket) there is no noticeable increase of any kind. Many people are driving around on broken motor mounts and have no idea, since the metal arm is still sitting on the rubber puck. The oem motor and diff mounts are hydraulic, which means they are oil filled, when they rupture the oil leaks out leaving the empty rubber shell. On the early models the left side motor mount has an aluminum arm with a bonded rubber mount, that rips off.

As I said earlier in this thread, if installation has increased NVH, then check your mounts...

Hmm. The engine mounts on my car are new OEM pieces, the PPF is a newer Mazdaspeed piece and the engine is healthy. The diff mounts are original though. I saw the information on this in the installation sheet but the b/w images were hard to interpret. The recent photo is very helpful. I will take another look at the diff mounts on my car to see if they exhibit any signs of failure like what is shown above. It looks like a fairly tough job to get the mount off the diff with the diff staying in the car so I was reluctant to just pull it down for an inspection. But maybe I will just order a set of new OEM mounts and put them in and see what changes.

Thanks for the feedback anyway!

Zepticon 09-23-17 05:10 PM


Originally Posted by jza80 (Post 12218390)
It looks like a fairly tough job to get the mount off the diff with the diff staying in the car so I was reluctant to just pull it down for an inspection. But maybe I will just order a set of new OEM mounts and put them in and see what changes.

It was the first real piece of wrenching i did on my RX-7, and it is fairly straight foreward, but takes a bit of time. You can do it in a couple of hours if you follow the guides posted in the FAQ sections.

Project88Turbo 09-23-17 06:50 PM

It's awfully dumb when someone tries to attack one of the long standing vendors here that actively develops new parts for our cars and has a shop that actually builds engines. Most of the car world has long forgotten our cars and barely offer maintenance items.

In any case, this transmission brace is on my list if I ever get the rest of my crap I need :)

Vince

94 R2 09-17-18 01:44 PM

Had a great conversation with Elaine on the Banzai team and the crossmember was mentioned which piqued my interest. Often it's difficult to get my car into reverse (usually when cold) and she mentioned the crossmember would alleviate this. This would be my primary desired outcome among the other benefits. Anyone notice improvement in that regard specifically?

Banzai-Racing 09-17-18 01:50 PM

Elaine said it would assist with shifting not cure a worn or broken trans. If your car does not ever go into reverse that is something mechanically wrong that will not be solved by adding our product.

94 R2 09-17-18 03:38 PM


Originally Posted by Banzai-Racing (Post 12301665)
Elaine said it would assist with shifting not cure a worn or broken trans. If your car does not ever go into reverse that is something mechanically wrong that will not be solved by adding our product.

Agreed. I realized I misspoke in my post above which certainly made it come off that way. Fixed. :)

Banzai-Racing 09-17-18 03:49 PM

She did not say it would alleviate that issue either, she knows our products far better than that and would not make empty promises to sell something. Our crossmember holds the tail shaft of the trans, basically it really helps forward motion under load to stop the trans from flopping around. If you can't get your car into gear from a dead stop you have a mechanical problem with your trans.

94 R2 09-17-18 05:32 PM

LOL. Thanks.

A4U 09-20-18 12:50 PM

I'm running the Banzai transmission brace - works excellent :) I have purchased a few things from them...always quality.

Molotovman 09-20-18 01:02 PM

I installed one of these on my car over a year ago. it's a great product with 0 issues. I have a friend with nearly identical engine work and my trans/sifter feels much more solid.

cloud9 09-20-18 01:16 PM

I have it on good authority from a credible source that Chuck Norris once karate chopped the Banzai Trans brace and it didn't break..

Zepticon 09-20-18 04:43 PM

I got one as well. Tho still not sure if i should install it with the supplied polyurethane bushing or a similar rubber bushing. I hate noise :D

Banzai-Racing 09-20-18 05:38 PM


Originally Posted by Zepticon (Post 12302433)
I got one as well. Tho still not sure if i should install it with the supplied polyurethane bushing or a similar rubber bushing. I hate noise :D

bolt it on and see, install is very easy. You can always install the rubber GM mount in a few minutes or remove the crossmember completely. It only takes 10-15 minutes.

Zepticon 09-21-18 03:22 AM


Originally Posted by Banzai-Racing (Post 12302443)
bolt it on and see, install is very easy. You can always install the rubber GM mount in a few minutes or remove the crossmember completely. It only takes 10-15 minutes.

Yeah, im just procrastinating since i have to jack it up and crawl under it.
Its amazing that you used an off-the-shelf mount for this. So easy when i can just go and order either a super stiff or a stock ruber mount on ebay if you want to deviate from the supplied mount.


DuGuder 09-21-18 07:45 AM

Jesus! I can't believe I just read through years on this thread! From great reviews to BS drama back to more great reviews. I'm definitely sold on the crossmember. I have to feel this for myself now, after hearing such great reviews.

Chris, kudos for you and Banzai-Racing for creating great products for the rotary platform and maintaining your cool with disgruntled customers :bigthumb:

rxsevinn 10-22-18 10:30 AM

Just bringing this thread back AGAIN...but wanted to see if anyone else noticed this once they installed their crossmember.

After install, i did notice some increase in NVH (Which was expected) but it also felt that it was putting extra strain on my transmission in terms of how freely it revs. I've thought that maybe i have it torqued down out of spec, and because of the poly bushing being so stiff, it pushed my trans out of alignment with everything else.

Just wondering if anyone else knows torque specs for this, as well as the pep boys part number for the other rubber bushing.

Things to note are my motor mounts as well as diff mounts are brand new, also poly though.

Mrmatt3465 10-23-18 07:35 AM

So you installed poly motor/diff mounts and the trans brace all at the same time and noticed an increase in NVH?

Im not surprised.

Poly motor mounts increase NVH, even with the little rubber bushings on either side of the subframe. Can’t speak fo poly diff mounts as I use Mazda comp there. If I installed this crossmember, I would expect a small increase in NVH. But it wouldn’t stop me from buying one. This is still on my wish list.

Matt

rxsevinn 10-23-18 09:23 AM

I didnt install them at the same time, Ive had the motor and diff mounts installed previously and there was little to no noticeable NVH that I cared about. I also have the diff brace installed. But the cross member just seemed to take it over the top.

But im not really concerned with the noises versus the rev'ing of my motor/trans.

Now that the crossmember is on, it feels like the motor is straining to hit redline, where it was more free-reving before.

Seeing if anybody experienced this during install. Already ordered the rubber replacement from Autozone, so seeing if that helps.

hadokenny 10-23-18 10:05 AM


Originally Posted by rxsevinn (Post 12309101)
I didnt install them at the same time, Ive had the motor and diff mounts installed previously and there was little to no noticeable NVH that I cared about. I also have the diff brace installed. But the cross member just seemed to take it over the top.

But im not really concerned with the noises versus the rev'ing of my motor/trans.

Now that the crossmember is on, it feels like the motor is straining to hit redline, where it was more free-reving before.

Seeing if anybody experienced this during install. Already ordered the rubber replacement from Autozone, so seeing if that helps.

I think the increased vibration is giving you the illusion that the engine is straining to hit redline. Rubber replacement should help with that "feel." Kind of like external wastegate with dump pipes and loud exhaust make the engine sound like it's working a lot harder than it really is.


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