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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Wed Mar 12, 2014 5:21 pm 
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Location: Brisbane
Additional pictures showing standard 60 duro in red and custom pour 80 duro in green.
Also note production crush tubes with zinc plating.


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Thu Jul 10, 2014 6:12 am 
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Location: Brisbane
Bump
Still some 60 duro sets in stock.
Still own the moulds and can custom pour other hardness on request.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Mon Jul 14, 2014 5:35 am 
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You've got mail


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Wed Jul 30, 2014 8:10 am 
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Posts: 197
Location: Brisbane
Link to an under bonnet video of my car at Oakey Street sprints.
This car makes around 140whp and is running semi slick tyres in this video.
It is fitted with a set of 60 duro mounts.
Note that the mounts are still soft enough to absorb shock loads and help protect the driveline.
Also note that the torque damper you can see is not absorbing any torque reaction, it is set up to damp vibration.
https://www.youtube.com/watch?v=br8KhiDHUZ4&feature
Listen out for the brake lock up and cone impact at about 40 seconds!

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Last edited by Budget Racer on Wed Jul 30, 2014 12:46 pm, edited 1 time in total.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Wed Jul 30, 2014 10:05 am 
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Location: vic
Thats awesome hehe

Have you got just a 60duro gearbox mount lying around
I'll take it if you do


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Wed Jul 30, 2014 11:43 am 
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Location: Brisbane
No Sorry,
But I will have a single rear mount in 60 duro available for anyone that wants just the one.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Aug 29, 2014 10:10 am 
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Location: Brisbane
One off special -
60 duro rear mount only, with aluminum crush tube.
$65.00 excluding shipping.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Aug 29, 2014 11:27 pm 
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Joined: Sun May 29, 2011 12:45 pm
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Location: Brisbane
Ever seen these in a machined billet of duro 70/90 instead of a pour?


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Thu Sep 04, 2014 12:18 pm 
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Anything lesss than 90 is very hard to machine as a general rule.
It can be done with a very sharp tool, but the main challenge is actually holding the material in the chuck etc, due to distortion under the clamp load.
In some cases I guess you could rig up a supporting jig, but as with most of these things it is a matter of cost effectivness.
Not such an issue if you are just playing around with something for yourself of course....

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 04, 2015 10:58 am 
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Location: Brisbane
Spring Special - Free standard postage within Australia.
Currently stocking 50, 60 and 70 duro.
80 and 90 available on order.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Thu Oct 01, 2015 6:02 pm 
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Joined: Tue Jan 31, 2006 2:27 pm
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Location: Gold Coast
Purchased the 2 front mounts in 70 duro and fitted them up today (already had a poly rear).
Steve was excellent to deal with and the product is very good quality. Makes it heaps easier to install with the split design and not needing a press. Thanks heaps 8)


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Oct 02, 2015 8:49 am 
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Location: Brisbane
Glad your happy.
I should mention that we have now moved to a poly crush tube from metal.
Corrosion free.....

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Oct 02, 2015 4:13 pm 
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I noticed that.
Have to say that the car sounds very different now inside with the amplified vibrations, in a good way and feels tight....toight like a tiger :lol:


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Tue Mar 08, 2016 8:56 am 
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Original post edited.
Now stocking 50, 60, 70, 80 and 90 duro for immediate dispatch.
Custom pour charge no longer applies.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 2:26 pm 
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Now also available 72 Duro (Light Blue) and 75 Duro (Dark Blue).
These fills the gap and allows for some fine tuning between the 70 and 80 Duro, which is where a lot of applications need to be for optimum performance.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 6:25 pm 
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Location: NZ
Steve how do these compare in durometer to the super pro ones? I have all three mounts in the super pro range. It certainly fixed axle tramp but introduced a lot of vibration. Just interested. Perhaps a little softer rear mount or maybe the gearbox mount may help? Cheers.


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 6:40 pm 
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The Superpro unit I originally measured was 90 duro. I believe they run the one material for all their suspension bushes etc as well. At the time I developed mine, they were offering only the rear mount and I didn't see it as a good engineering solution. I am currently giving my race car a make over which will involve less weight and more traction. So I am moving to 75 duro for it.

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 6:49 pm 
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Location: NZ
Thanks Steve. I'm just a bit concerned with the LSD and more power after the engine upgrade they might be too hard. I'll keep yours in mind and may even go for something a little softer on the rear mount (say 70) to allow at least a bit of movement. It's almost like it's hard mounted. If I ran the two hard mounts on the engine and box and the little bit softer mount on the back do you think that may be a solution to at least some of the vibes being transmitted...I really like the fact axle tramp is completely gone.

To be honest you don't feel any issues on the track at all at speed but it just seems very solid with no give.


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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 7:08 pm 
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I guess my basic theory is to go just hard enough to eliminate the axle tramp. I want to keep it as soft as I can beyond that to protect the drive line from shock loading as much as possible. And I want to spread the load correctly to the chassis to avoid point loading the rear mount which is susceptible to breaking out of the firewall. (Speaking from experience). The video below is my car with 60 duro mounts fitted and something like 180 wheel hp on slicks. Note a little tramp at the standing start and plenty of torque reaction in the engine still. Hence I'm going to firm it up a little.
https://www.youtube.com/watch?v=br8KhiDHUZ4

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 Post subject: Re: FS: Polyurethane Engine Mounts
PostPosted: Fri Sep 01, 2017 7:31 pm 
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Location: NZ
I watched the vid. I'm no where near that power. (NA) yes I see yours does need firming up a bit. Mine definitely needs softening. Do you think just softening the rear mount for a start? If I leave the 90 durometer SP on the front what durometer would you try on the rear mount?
I might make 100 ATW.
Cheers?


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