Rear motor mount

[slyalfa]

The thong has limits to it will not dent the hood. and it is exhaust pipe temp not motor temp. I noticed this when I moved my alt out some when I put on the crank trigger so the belt would not cut into it. when winter came the alt started to hit as soon as it heated the front would rise and I had clearence then I looked in to it some more and noticed how the exhaust pipe gets longer and pushes on the headers and rotates the motor. With the exhaust undone the motor is balenced if you push just a tiny bit you can rock it untill the tongs stops in ether direction. I have seen on other cars where the put in spring loaded flex in the exhaust pipe.
but I was suprised at how much it moves. but it is repeatable. and explanes why the thong is used. The expanding exhaust pipe is a problem for each OEM and each OEM has there way of working around it.

as for taking off in first as long as there is no wheel hop I did not notice much rotate angle. but a quick pop to the breaks would cause the front to dive some. but no where near as much as the heated pipes move it
now if you get the back hopping the trany bounces around a lot and I do not know how much the front moves around. as I let off right away anytime it startes to hop in fear of busting somthing.

[benz-tech]

Well, this is interesting. It doesn't seem possible that an exhaust system supported in rubber hangers could have any effect on an engines position. Were I not new here, I would call B.S. But for now I will hold my tounge until I can perform this experiment myself.
As for cars with the flex pipe installed, they are largely FWD vehicles where engine torque would move the tailpipe vertically thereby causing a host of problems. I've Never heard of exhaust heat expansion changing anything other than the diameter of the piping and certainly never as being a "problem".
Can anyone else shed some light on this?

[JoeCab]

Quote:

Originally Posted by aldo Well after a bunch of calls to a lot of suppliers it looks like the rear motor mount is NLA!!! (This is probably not news to most of you).

[AR4me]

To the same standards as OEM parts?

I have seen non-OEM parts (not from you, though!) that was of questionable quality or fit. If I can get it, I prefer OEM parts - you know it will fit, right, the first time!

Jes

[Gubi]

Quote:

Originally Posted by AR4me To the same standards as OEM parts?

[JoeCab]

Quote:

Originally Posted by AR4me To the same standards as OEM parts?

[AR4me]

Quote:

Originally Posted by Gubi Somehow "matching Fiat build quality" does not strike me as a good design target

[Gubi]

Uh Jes, dude:

[AR4me]

Gubi, apologies if I offended you. I understand you were trying to be funny, but the quality of non-OEM parts is pretty important for keeping our cars on the road. Anyway, each to his own.
Jes

[slyalfa]

benz-tech I would have never thought about it before. But then I had the clearance problem and then noted that the motor moved as it heated up then I traced it down to the pipes. (A car ad on TV helped as they bosted about how the pipes expand somthing like 6 inches for that model in the ad)
In my car the whole system also moves back but the mount at the far back where it goes over the axel seems to be the limit. I seem to rember the old mount had more movment but needed to be changed about once a year. And I had it fail one time where the axel cut into the pipe and when it was repaired the mount was different and I think has less movment. but also seems to never fail.
The old was a long strap of rubber mounted to the pipe and mounted to the frame. The new is a strap of steel with a ruber thing where it mounts to the frame.
The steel strap still lets it move back but It might be less then the rubber strap did .

[jolson]

When I repalced the donuts on my 87 Gold I noticed the rear motor mount rubber was badly decomposed but I couldn't get it out of the bell housing. So I took the inside part out, cleaned out the rubber from the metal cylinder in the bell housing and made my own mount. I used bike inner tubes wrapped around what was left of the the mount, glued with goop and tape and secured the wrap with wire. I then greased it up real good and slid in into the bell housing cylinder. It's been two years and so far so good. Good luck.

[superloaf]

Quote:

Originally Posted by JoeCab The rear engine mount has been problematic for about a year now. At Centerline, we are having them reproduced and they should again be plentiful in a few months. The V6 rear flex discs were a real problem about a year ago; but we now have a good supply. When parts go NLA, it takes a while before we are able to reproduce them or convince suppliers to do another production run but we can usually get it done! Joe

[La Voce]

Aldo,
I called DiFatta Bros about four weeks ago and asked for a rear motor mount for my Alfetta GT. I have it, and it appears it's never been installed, but arrived loose in a box and not in the original packaging, a bit dirty with a few surface scratches and minor surface corrosion, and I paid quadruple the going price as compared to when they were in stock at the other sources such as IAP or Centerline, but I suppose I should be thankful I have it. It's a 64mm OD. I am told there is also a 62mm OD mount. Typical Alfa! Anyway, I don't know which is correct for the Milano vs. the Alfetta GT but I will begin the replacement effort this Saturday and will let you know if DiFatta shipped me the correct size. They may have another one, or, four weeks ago when last I spoke to Chris at Highwood Alfa, he had rear motor mounts in stock, I believe both 62mm and 64mm sizes. The dollar exchange is not good, and freight is dear, but hey, Alfa ownership is not for the faint of heart. Good hunting, I'll give an update on fitment Saturday morning.
Jim

[superloaf]

ok, thanks. and i suppose this is a bit off topic but does anyone know if when alfa returns to the us market, if any of these parts will be available? not sure what the law is on the "statute of limitations" for parts supply. probably wishful thinking all across the board since the new alfas look to be going upscale and parts can't be cheap @ a maserati dealership!

also, anyone have any luck with silicone & rubber stuff whatever you can find into the openings of the mount and superglue it all with some silicone? looks like i might be heading that way. is it reasonably durable (not sure how much stress that mount takes since the original seems to be quite soft) and what about NVH?

thanks to all

[superloaf]

Quote:

Originally Posted by sidewaysalfa Joe at Centerline gave me this hint. It works OK. Just fill the open space with something, I used some hose pieces, and then silicone them in. It makes a slightly rougher ride since the engine is not as insulated from the body. But I hardly notice it.