with the relative newness of this vehicle there hasn't been much testing, but I figured I would ask anyway what is the bestest rear motor mount? I'm thinking the delrin TRZ or the CP-E would be the ones to go with. I can't even find where to get the CP-E, and I read it was sold out anyway. I like the CP-E uses rubber which is less prone to wear out unlike plastics such as delrin or urethane, but the TRZ is cheaper, and avaliable.
rear mount?
- Thread starter gtlaw
- Start date
interesting.
read up
http://en.wikipedia.org/wiki/Rubber Rubber
http://en.wikipedia.org/wiki/Polyoxymethylene Delrin
Rubber
Rubber exhibits unique physical and chemical properties. Rubber's stress-strain behavior exhibits the Mullins effect, the Payne effect and is often modeled as hyperelastic. Rubber strain crystallizes.
Owing to the presence of a double bond in each and every repeat unit, natural rubber is sensitive to ozone cracking
Aside from a few natural product impurities, natural rubber is essentially a polymer of isoprene units, a hydrocarbon diene monomer. Synthetic rubber can be made as a polymer of isoprene or various other monomers. The material properties of natural rubber make it an elastomer and a thermoplastic. However it should be noted that as the rubber is vulcanized it will turn into a thermoset. Most rubber in everyday use is vulcanized to a point where it shares properties of both; i.e., if it is heated and cooled, it is degraded but not destroyed.
Delrin
Properties
The polymer shares common characteristics with other synthetic polymers such as low density (1.4 - 1.5 g/cm3), and ease of moulding when the molecular weight is low enough. It is a semi-crystalline polymer (75-85% crystalline) with a melting point of 175 C as a homopolymer. A copolymer version has slightly lower melting point of 163 C. It is a tough material with a very low coefficient of friction. However, it is suceptible to polymer degradation catalysed by acids, which is why both polymer types are stabilised. In the case of the homopolymer, it has chain end groups which resist depolymerization. With the copolymer, the second unit is a cyclic ether which resist chain cleavage. It is also sensitive to oxidation, and an anti-oxidant is normally added to moulding grades of the material.
Rubber exhibits unique physical and chemical properties. Rubber's stress-strain behavior exhibits the Mullins effect, the Payne effect and is often modeled as hyperelastic. Rubber strain crystallizes.
Owing to the presence of a double bond in each and every repeat unit, natural rubber is sensitive to ozone cracking
Aside from a few natural product impurities, natural rubber is essentially a polymer of isoprene units, a hydrocarbon diene monomer. Synthetic rubber can be made as a polymer of isoprene or various other monomers. The material properties of natural rubber make it an elastomer and a thermoplastic. However it should be noted that as the rubber is vulcanized it will turn into a thermoset. Most rubber in everyday use is vulcanized to a point where it shares properties of both; i.e., if it is heated and cooled, it is degraded but not destroyed.
Delrin
Properties
The polymer shares common characteristics with other synthetic polymers such as low density (1.4 - 1.5 g/cm3), and ease of moulding when the molecular weight is low enough. It is a semi-crystalline polymer (75-85% crystalline) with a melting point of 175 C as a homopolymer. A copolymer version has slightly lower melting point of 163 C. It is a tough material with a very low coefficient of friction. However, it is suceptible to polymer degradation catalysed by acids, which is why both polymer types are stabilised. In the case of the homopolymer, it has chain end groups which resist depolymerization. With the copolymer, the second unit is a cyclic ether which resist chain cleavage. It is also sensitive to oxidation, and an anti-oxidant is normally added to moulding grades of the material.
- :
- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
on its own it should not void the warranty. if you are really concerned you can swap it out in a few minutes before a dealer trip.
master tech at the dealer i go to said it would not void the warranty of the car. he said the car needed to stiffen up a bit.
builthatch
Member
there is alot of info on the board already about these options. i mean, alot.
at any rate, i use the corksport inserts. cheap, reliable, not harsh, impossible to spot.
I searched, but I can't find where to get the CP-E one, and I guess I would like to know how the TRZ delrin bushing stands up to the test of time or atlease the few months people have been using them
http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS278&q=cp-e
third site from the top. It is in stock at $139.00
third site from the top. It is in stock at $139.00
Builthatch has the cs mm inserts, iU have them too, Works perfectly fine. Eliminates shakyness and bounce in the motor. Shifts much smoother and feels more firm when you do it. No clunking at all. Paired with the TWM bushings for the shifter the car is 10X better to drive
Super Unique
Member
- :
- 2008.5 Mazdaspeed 3 Black Mica
On my car it equals vibes like a cement truck and rattles like a 90 yr old french hooker.....
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