yorkshire_spam Posted August 31, 2014 Share Posted August 31, 2014 So if I fit rear poly (SuperFlex) which bits from the ordinary trunion bush kit do I need? (If any?)I'm wondering about parts like 141444, 141443 and 141185Does the poly version do away with all these?Cheers,Sam Quote Link to comment Share on other sites More sharing options...
Moorzee Posted August 31, 2014 Share Posted August 31, 2014 Whats the score with "poly" anyhow? when I was looking to buy ads stated poly and full poly etc.... What are they and why would I need? Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted September 2, 2014 Author Share Posted September 2, 2014 Poly bushes (polyurethane) are a popular replacement for the original metal/rubber suspension bushes.Quite often modern pattern suspension bushes are poor quality, poly last longer and give better ride than poor rubber bushes. There's some debate as to whether or not poly are better than original OEM spec rubber/metal bushes, but one thing is for sure - poly are easier to fit and replace!BUT beware cheap poly bushes are the worst of the bunch - wear out fast, poor ride etc. So if you opt for poly replacements choose a reputable brand (I always go for SuperFlex or SuperPro, but they ain't cheap!)For the record, with regard to my original question above.... I contacted SuperFlex and got this response:"Our PU bushes are inherently weather resistant, so require no dust shields etc" Quote Link to comment Share on other sites More sharing options...
heraldcoupe Posted September 2, 2014 Share Posted September 2, 2014 I have mixed views on polyurethane trunnion bushes. I've always objected on the grounds that the poly compounds used are inherently softer than the original nylon bushes, so a retrograde step in terms of precise location. On the other hand, recent changes to the design of readily available 'original' bushes, ie a thicker inner washer to the dust shield, means the bush itself is clamped tight between the uprights, leaving 1-2mm of endfloat for the tube which 'should' be clamped tight. If the poly bushes are correctly designed so the tube is clamped while the bush pivots, then they would indeed be an improvement.For the record, the early trunnion bushes never incorporated any shielding, this was introduced as a modification somewhere around 1964,Cheers,Bill. Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted September 2, 2014 Author Share Posted September 2, 2014 I share the concerns for trunion bushes, but though I'd give them a try on the back of the Spitfire.100% sold on SuperFlex/SuperPro suspension bushes though. Quote Link to comment Share on other sites More sharing options...
Bilbo Posted September 16, 2014 Share Posted September 16, 2014 Hi, I have changed every bush to poly ones and the ride of the car is so much nicer! There are really easy to fit...its the best bit of money I have spent on it! Quote Link to comment Share on other sites More sharing options...
MrSpeedy Posted September 17, 2014 Share Posted September 17, 2014 I made my own nylon bushes with stainless sleeves for lower trunnion mounts and used generic poly bushes elsewhere.All fitted about 3-4 years ago and still going strong Quote Link to comment Share on other sites More sharing options...
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