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-   1st Generation Specific (1979-1985) (https://www.rx7club.com/1st-generation-specific-1979-1985-18/)
-   -   solid TRANNY mounts (https://www.rx7club.com/1st-generation-specific-1979-1985-18/solid-tranny-mounts-296023/)

Scalliwag 04-18-04 01:35 AM

solid TRANNY mounts
 
To go with the solid motor mounts....

http://vintagerotaries.com//images/m...st/mount01.JPG

Jon_Valjean 04-18-04 01:40 AM

Pleased I'm not a passenger in your car... You are just using it for the track, aren't you?

GavinJuice 04-18-04 01:47 AM

Yea whats the purpose, just go with some factory rubber and you should be fine.

Jeff20B 04-18-04 02:34 AM

I wonder if that would be better than holding a pager in your lap? :)

seanrot 04-18-04 02:47 AM


Originally posted by Jeff20B
I wonder if that would be better than holding a pager in your lap? :)
How bout sitting on your pager??? :rlaugh:

Buddy solid engine, mounts solid tranny. Hope you dont have fillings. :D

Scalliwag 04-18-04 10:46 AM

That may hold true with a piston engine but it's not that harsh with a rotary. The entire rotating mass never travels outside of 6" from center and does not have a vilent change in direction as a piston on a connecting rod does.
The more radical the porting the more you feel it but that is to be expected. But it doesn't amplify the vibration to a intolerable level.
I will get some of the 100+ customers of mine that have actually installed them to post their experiences. Most are Ebay but there are plenty of forum members running them. Mostly 2nd genners but several 1st and 3rds now.

setzep 04-18-04 10:48 AM

What do your solid engine mounts for the FB look like?

Scalliwag 04-18-04 11:02 AM

http://vintagerotaries.com/FORUM/files/repumount.jpg

mar3 04-18-04 11:18 AM

What the? A Scalliwag post in the 1stgen corner!
Question: What if you ran poly engine mount bushings and that most excellent tranny piece of yours?

And, of course, what is the $$$ of that tranny mount?:confused:

Scalliwag 04-18-04 11:54 AM

Hell Mario you know how much hell I have taken over 1st gen (or lack of) stuff :eek: So now that I have the vintage forum I am coming around :)
The tranny mounts will work fine with any mount but the more solid the motor mounts the more effect they have.
The crossmember under the tranny still has rubber biscuits where it bolts to the subframe so you don't lose all flex, just most of it.
As long as you ran solid mounts you could pull those and shim the mount solid.
But if you did that without a solid mount and the motor twists under torque all that force would go on the two 8mm bolts with less than 5" between them. The leverage would be insane. Eventually it would break them or pull the threads out of the tail housing :(
The mount is $45.

seanrot 04-18-04 12:12 PM


Originally posted by Scalliwag
That may hold true with a piston engine but it's not that harsh with a rotary. The entire rotating mass never travels outside of 6" from center and does not have a vilent change in direction as a piston on a connecting rod does.
The more radical the porting the more you feel it but that is to be expected. But it doesn't amplify the vibration to a intolerable level.
I will get some of the 100+ customers of mine that have actually installed them to post their experiences. Most are Ebay but there are plenty of forum members running them. Mostly 2nd genners but several 1st and 3rds now.

I wasnt knocking you and I understand the concept. But my engine isnt the smoothest running piece of mechanical wonder I have. A while ago I had a really bad vacuum leak and the engine wanted to jump outa the car at idle:) Now I have other problems...:(

I do like your semi solid idea that I read on the other board. :peace:

Scalliwag 04-18-04 01:12 PM

The motor definately needs to be running right. Usually someone with a liking for power likes to feel it and actually enjoy feeling their motor a little more. Plus the response when they get on it and better yet when the tranny doesn't rock back between shifts and cause you to miss gears they love that even more.
But I definately concede that if the motor is not running right it would probably add to the nuicance :(
But when it is running right.... :D

The semi-solids are definately the best of both worlds and it is just a cost factor. The labor/equipment time is higher. The problem with the 1st gens is that the mount is not very tall. Trying to make a cushioning mechanism with so much less room to play with will be a challenge.
Right now I am doing the 3rd gen prototype. It looks wicked as hell.

jeffraider 04-20-04 08:18 PM

How do we order these? How tough is install?

jeffraider 04-20-04 08:18 PM

How do we order these? How tough is install?

Scalliwag 04-20-04 09:27 PM

As long as you have a jack and a set of jackstands they are easy. Some of the 13b's in the GSL-SE's are a little more pain but still easy. For those I take the bolts from the front cover and the bottom with the motor slightly jacked up and pull the whole bracket with the mounts.
It is easier than fighting the top two nuts in some cases.
When reinstalling you just drop the bolts from the top and tighten from the bottom.

To order my PayPal is mikeroberts@charter.net and just put in the order what you are wanting and that it is a non-Ebay auction.

rototiller1 04-20-04 09:38 PM

Hockey pucks are cheaper

rototiller1 04-20-04 09:43 PM

Hey guys, go buy some hockey pucks

rototiller1 04-20-04 09:46 PM

save your money, use hockey pucks

karism 04-21-04 02:57 AM

Scalliwag : I`am guessing that the solid motor mounts might be a bit harsch with my Bridge Port ?

Karis

Scalliwag 04-21-04 06:18 AM

I know a few people around here running them with healthy port jobs. BDC (Brian Cain), Tony Farkas, I can think of off hand that will tell you they make a difference but not a huge difference in feel.
You can already feel a bridgey pretty well with stock mounts. It is not as intensified as most people expect.
Some people just change the left side mount so the motor does not lift under torque expecting any vibration to be reduced. In theory at least at first glance that makes sense but whether that holds true is another story.

karism 04-21-04 08:00 AM

Ok!
Then i will definately consider it!
Thanks Scalliwag!

mar3 04-21-04 06:30 PM


Originally posted by Scalliwag

To order my PayPal is mikeroberts@charter.net and just put in the order what you are wanting and that it is a non-Ebay auction.
Are you going to go to the "meet" the Saturday of May 1st? Heck, for that matter, is Eric going to do the meet again?? If he does, bring one with you and I'll have some cash for you...otherwise, I can wait til City Streets on the following Thursday night...:cool:

Scalliwag 04-21-04 06:42 PM

I'm not sure. Probably though. Are you going to the swapmeet 5/8?

mar3 04-21-04 07:17 PM

I can make it in the morning, but I have a BDay party that afternoon, so I can't stick around...

Atkins Dan 04-21-04 07:26 PM

Scalliwag
Sent you a PM .


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