Rubber muffler mounts. Good ones?

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gtsun

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Along time ago I bought some of these rubber muffler Iso mounts that had stainless bolts and nuts. They're old and cracked now and I'd like to replace them but I can't remember who sold them. Does anyone know of a source for these in stainless? I have a brand-new set of stock ones but they're not as wide and I don't like them, plus the last stock ones I got from a reputable seller fell apart in less than 200 miles. The stainless ones I bought lasted for years so I'd like another set but just can't remember where they came from.. Anyone know please?
 
gtsun,
did you check out the new bits that cNw sells for mounts on the rear exhaust p shooter plates: All steel coil spring with no rubber. Call Matt.
http://coloradonortonworks.com/part-cat ... /hardware/ scroll down to the bottom of page. 5th pic up from the bottom.
I have no experience with these units but maybe others that do can chime in. I have experience with the rubber mounts, some good :o and some real bad :x which separate in short order where the rubber does not vulcanize with the steel hardware.
Regards,
Thomas
CNN
 
I bought stainless ones from cNw a year or so ago. Ask if he still stocks them.

Graeme

They were stainless fasteners for the oil tank mounts, not the muffler ones. Oops.
 
The most important aspect of long life for these rubber parts is lack of stress. When you fit the muffler/header each should just "drop-on". These parts get enough stress just keeping up with the martini shaker of the drive train, especially at low revs. If you have to struggle to get your exhaust system mounted you'll be luck to get a season out of the parts. And, BTW, any struggle may be pointing at your ISOs...

RPC sells both the muffler/tank rubber mounts, as well as the oil tank mounts in stainless.
 
Picked up the set of isolastics ordered locally from ackland-grainger. 50 durometer, not sure what the originals are, but these are noticeably denser, and cheaper than the POS units more readily available

Rubber muffler mounts. Good ones?
 
For us in the Colonies who can buy directly from McMaster-Carr, these make an easy way out. muffler-mounts-t11856-30.html#p293688 Just note that they only come with coarse thread studs, precluding their use for head steady and fule tank mounts.

I exchanged mine this Spring for 50A durometer, and it did help with the lower rev vibrations as compared to the first-round 60A.

Nathan
 
L.A.B. said:
http://www.minispares.com/product/Classic/GEX7251POLY.aspx
Click to expand...

To quote their description, "This is a stronger poly version." I wonder if that would mess with the vibration characteristics the way my earlier 60A durometers did. That being said, that looks like it might work well, what with the narrowed waist and all.

'Just found this at their website: http://www.minispares.com/product/Class ... |Back%20to If they'd ship to a Yank without dinging me too bad, I'd like to try both. I'm still in the process of setting up the accelerometer testing, so this would be a great variable to throw in.

Nathan
 
Nater_Potater said:
To quote their description, "This is a stronger poly version." I wonder if that would mess with the vibration characteristics the way my earlier 60A durometers did. That being said, that looks like it might work well, what with the narrowed waist and all.
Click to expand...

They do feel harder/stiffer than the usual 'rubber' type.
 
I was unable to find the CNW spring units on their website. I know they had some problems with them early on, did they discontinue them entirely or am I just overlooking them?
 
cyclegeezer said:
I was unable to find the CNW spring units on their website. I know they had some problems with them early on, did they discontinue them entirely or am I just overlooking them?
Click to expand...

I talked to them late last year when they were having issues with the welds, and, at that point, they were holding off until they had better confidence in their finished product. 'Must not be quite there yet...

Nathan
 
acadian said:
Picked up the set of isolastics ordered locally from ackland-grainger. 50 durometer, not sure what the originals are, but these are noticeably denser, and cheaper than the POS units more readily available

Rubber muffler mounts. Good ones?
Click to expand...

I got mine at Grainger here in Florida. Standard kit for items like motors and other equipment that can transfer vibration to a building. I think they were about $2 apiece. Mine are about 6 years old now, and still going strong.

Granger is a nationwide supply house that sells industrial supplies.
 
Nater_Potater said:
L.A.B. said:
http://www.minispares.com/product/Classic/GEX7251POLY.aspx
Click to expand...

To quote their description, "This is a stronger poly version." I wonder if that would mess with the vibration characteristics the way my earlier 60A durometers did. That being said, that looks like it might work well, what with the narrowed waist and all.

'Just found this at their website: http://www.minispares.com/product/Class ... |Back%20to If they'd ship to a Yank without dinging me too bad, I'd like to try both. I'm still in the process of setting up the accelerometer testing, so this would be a great variable to throw in. Nathan
Click to expand...

+1
I can tell you that Paul Dunstall also used the old mini/1100 exhaust rubber mounting :!: :shock:
 
Nater_Potater said:
L.A.B. said:
http://www.minispares.com/product/Classic/GEX7251POLY.aspx
Click to expand...

To quote their description, "This is a stronger poly version." I wonder if that would mess with the vibration characteristics the way my earlier 60A durometers did. That being said, that looks like it might work well, what with the narrowed waist and all.

'Just found this at their website: http://www.minispares.com/product/Class ... |Back%20to If they'd ship to a Yank without dinging me too bad, I'd like to try both. I'm still in the process of setting up the accelerometer testing, so this would be a great variable to throw in.

Nathan
Click to expand...

The grainger units I purchased have a durometer range (20-100 I believe), I opted for 50 and recall the original being somewhere in the 30-40 range
 
There are good rubber mount and cheaper rubber mounts, but I think the key is to get "Fresh" rubber mounts.
NOS is right out.
 
One of the reasons I like the stainless ones that I had is that they are slightly thicker than the stock one that I have bought recently. I'm at work so I can't measure them but like the ones in the picture acadian posted from Granger mine look wider or thicker than the stock ones and I like the fit better that way. No stress on them they just sit right. I think I will order some from Granger and dry them, thank you Acadian. Also the ones you showed in poly sound interesting L.A.B. And the ones from Matt at CNW sound really good too. I would want mine in black so thought I would cover them in shrinkwrap or try to paint them if they turn out to be a viable option. Thanks again guys for the help, Glenn
 
You need to be sure that they are not so wide as the top drive side mount stud doesn't score the outside of the swing arm.
damhik !
sam
 
trident sam said:
You need to be sure that they are not so wide as the top drive side mount stud doesn't score the outside of the swing arm.
damhik !
sam
Click to expand...
Rubber muffler mounts. Good ones?


More details at muffler-mounts-t11856-30.html#p293688

acadian said:
Picked up the set of isolastics ordered locally from ackland-grainger. 50 durometer, not sure what the originals are, but these are noticeably denser, and cheaper than the POS units more readily available
Click to expand...

I went with the 50A durometers (down from first-try 60A), but that still may be too firm. 'Will try for 40A next (they're cheap).

Nathan
 
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