http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT

Guy's selling mounts for $65.00. Little bit of modification neded, but doesn't sound too bad. My motor definitly has a lot of movement..... could this be a good fix?

 

NO!

Solid metal (aluminum no less!) motor mounts on a street car is a very, very stupid idea.

 

what about just one solid and one in good stock form? don't alot of people do that?

 

If you are worried about this then get a torque brace.

 

Even solid Rubber/Urethane mounts will vibrate your teeth out of your head. Stick with the stockers.

 

Explain your reasoning on this.

And I hope it's something more then the dreaded road noise and vibration argument.( What a bunch of women)

 

If you bought your FD for luxary cruising, I wouldn't recommend urethane either...but it certainly will not "vibrate your teeth out of your head"

I just got the Gotham Urethane mounts and it's really not as bad as folks make it sound. There is only a slight vibration at around 1,500rpm, I wouldn't worry about it unless that's where you idle at. If your used to the rattles and squeeks and stiff suspension like most of us, then there are no worries.

 

Polyurathane mounts = coilovers .... they stiffen up the feel, but don't make it luxurious by any means... but if that's what you want, go do it....

Solid Mounts = Race car, do it if you plan on ripping your interior out. So the only thing that can vibrate are your fillings...
Otherwise you'll be very annoyed at all the stuff that can rattle in the interior....

 

you guys are such pansies. how many of you bashing on solid mounts have ever had them or experienced them? i have them in my car and absolutely love them. there's a little more vibration, but no more noise than the stockers. the only thing that gets on my nerves, is when my car 'cams', so to speak, the whole car shakes

 

Are urethanes really THAT bad? I wouldn't ever use solid metal, only because I think that's overkill for what I want. But my stocks are in pretty bad shape, along with bushings, etc which make for a bumpy and uncomfortable ride overall. If I don't plan on trackin it a WHOLE lot, (not goin over 450rwhp), it sounds like replacing with stocks wouldn't be a bad idea...?

Spoolin.. you haven't seen a big difference using solids? You've also used the urethanes?

 

I tried solids on another person's (race) car (FC), and said "No Way" for street use... then again some people, think the same for coilovers... it's all relative...

The Urathanes are a nice "In-between" solution for stock rubber, and solid mounts... in that they are harder, but not as bad as solid monts go...

I see this whole arguement as a sccale.. do you like the throttle response on your stockers ? If not, how much comfort are you willing to sacrifice to have things tighter, just like with the suspension....

In my car, the shifter is rock solidly planted in the car, it doesn't move but maybe 1-5mm. In up or downshifting... and that's what I like...

 

Whatever. I can't think of a single person on this board that NEEDS solid motor mounts. Some of you guys seem to go out of your way to make the car less pleasant to drive, with no real benefits.

 

Wow... 1-5mm... hehehe. You should take a spin in my car sometime. I'll even pay for the roundtrip tickets! When you let off the throttle in 1st or 2nd (stop and go traffic), the damn shifter moves like 3 ft! Ok, so that's exaggerating but you get the idea. Actually, at the slightest inclination, it likes to move around as if it thinks it's a hula dancer. (And let's not even discuss the fact that it leans to the passenger side like I smell funny or something and it doesn't wanna get too close) I figure new stocks would obviously help, urethanes even better, but as rynberg said I'm thinkin solids are too much for what I want the car to do for me. Then again, there's always buying that etb that I haven't gotten around to yet... hehehe

 

Grr. Stupid "proxy servers" and their double posts. Oh well, post 100!!!

 

no real benefits? Haveing a tighter driveline and better response is not a benefit? And not having to replace the mounts every friggin year is not a benefit?

I have a pair of his mounts coming for the FC rite now. I'll let you know what the differences are. I know it's an FC but Dcrosby mentioned it and I will compare to his experience.

I had urathane and am switching to these to try them out. I have a big single set-up and was going thru 2 sets of drivers mounts a year. Switched to urathane and all good. Now i am just waiting on the new engine.I'll share the experience on the FD whenever the engine shows up.

And how bout a compromise and put a couple of urathane wahers in between the mount and sub-frame to help ease some of the unbearable noise and vibration.


Poolman- the imagdry is too much with your descriptions!! "Leans away like I smell funny" Haha!

And i don't personally see how one can justify a ETB and not solid mounts. At least the mounts won't rip the inside of your fender off.

 

and i can't think of a single person on this board that NEEDS to modify their cars, but that's what they want.

i have built my car to be more pleasant all the way around. anyone who buys one of these cars is stupid if they plan on it driving like a cadillac deville. it's a sports car, not meant to be highly comfortable.

it's all preference. i have a kaaz diff, a diff brace, solid diff bushings, and solid motor mounts. i consider my car very streetable, as i do drive it all the time.

to those interested in the solid mounts, they tighten the whole feel of the car incredibly. yes you will notice some difference, but it's not going to make your FD a 'race car' because of it. i highly recommend them

 

Good point BigIsland... I've heard some nasty stories about that. But so many people seem to use them for long periods of time with no ill effects? Gotham, rx7store, etc. I was plannin on an etb and urethane mounts, but I'm still reading up on both to try and make the most educated decision. (So I can blame someone else if something breaks cuz they told me to get this or that, instead of choosing myself hehehe)

Hmm.... maybe I'll try out those solids just for the sh*ts and giggles. If I don't like, no harm done and swap em out. At least I could say I know for sure that they either are, or aren't, for me. Of course if I do try and don't like em, the blame is all on you Spoolin.

 

I'll explain mine: Fatigue stress.

There's no sense in using solid aluminum mounts unless you just like to hear your teeth rattle. Not to mention all of us have engine mounts that bolt through the oil pan. Going to solid aluminum mounts will only add to the pan sealing problems we all seem to experience.

 

Finally, another voice of reason....

 

I wasn't disagreeing with you rynberg... (learned my lesson ) I am a big fan of different folks different strokes...
Too Harsh for me might be just right for you...

For me I wanted to avoid replacing the rubber mounts every 60K mi... and have something that would at least last the duration of the motor, and maybe outlast. Be as solid when I put them in, as 60k mi down the road...
and I really wanted as much comfort as the previous "priority" would afford me... so it came down to Poly or Solid, and solid had less comfort than poly with little to no difference in performance (Stiffness wise)... so I chose Poly...

 

To an extent I agree with this. However the problem with the pan sealing "usually" occurs after the stocker has taken a crap and the engine is now flopping like a fish inside the engine bay. that puts the extra stress on the pan mounting surface. With the solids, I suspect that the flex will not be as big of an issue. Not saying it won't exist, there will just be less.

The downside I see to the increased rigidity will be to the mounting bracket( the aluminum or updated Iron ) I would think that if one still has the old style aluminum mount that it is now the weak link and may break. I think that 93BlackFD had that happen to him with his Gotham mounts. It was on the old style aluminum bracket. And a BP engine.

And as far as racing goes, I think the argument for stockers will win. Do to the fact, ( correct me if I am wrong DamonB) That the SCCA requires that the engine mounts be of stock design and materials. Or something to that extent.

It is not that I or others are unreasonable Rynberg. It is just that some want different things than you. For whatever their reasons are. Whether it be to tighten things up or to just try new things.

And i agree whole heartedly that if you are expecting a plush supple ride to start with in a sports car ,...Then you are in the wrong car. If you want that go buy a Bimmer or Merc, and live the life of comfort and luxury. ( And all those other yuppie features like a/c, p/s etc.. )

And we will all have dentures one day anyways, I am just getting a head start!!

 

I just installed Urethane mounts and love them so far, the motor is rock solid. I did however install a softer rubber washer to give a little more dampening. I might remove this to see if there is much of a difference. Check out this thread https://www.rx7club.com/forum/showth...hreadid=289409

I think that the aluminum is overkill, but I really can't see the vibration being any worse than with the trany brace that everyone raves about.

Everyone has different tastes and different opinions on how bad the rattle and noise is. This is one of those arguments that will never die. If everyone will just give there educated opinion of what they have experienced, it will help the rest of the people on this forum make an educated decision on what is best for them.

Cheap plug- I have an extra set of urethane mounts for sale, check out my website for details.

 

Depends on the class.

I fully understand the benefits of having a more solid engine mount and I am fully aware that many if not most racing cars do in fact have solid mounts. On a 13B however I just feel it's a poor idea because the closeness of the mounts don't provide them near as much leverage against the motor and so they are more highly stressed. Since our mounts bolt through the oil pan it seems to me a solid mount would greatly increase the chances of leaks around the mount bolts or the pan edges over the life of the install. Again not to mention all the needless NVH.

A urethane mount makes much more sense to me.