one piece polyurethene bush fitment problem .

twowheelstony · 1st February 2017, 23:30

so i got the big red polyurathane bushes for the front of the 75, they were a right NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- to get into the housing , after that the left one went onto the arm on the car with a bit of leverage and wood between the lever and bush. i levered off the car body ,the left went on with some effort but the right side one i just cannot get. the pry bar keeps slipping off the body . the hole where the bush goes onto the arm is a good bit smaller than the part of the arm itself but it was the same on both and one is on ,i can get it half on , bar slips , then it pushes back off .its a hateful job. anyone got any tips on it ? .i spent hours t it today and gave up hoping someone on here can tell me where i am screwing up .

twowheelstony · 1st February 2017, 23:34

hopefully a pic of the bushes shows up there .
i have heated the bushes in hot water and lubed with washing up liquid as i thought that oil may harm the polyurethene .
is there much involved in pulling the arm off the car any fitting while off?, id rather not do this but if needs be ill have to.

pic not loading, there are the solid red poly bushes as seen on ebay .i shoulda got the 2 piece just for ease of use

Avulon · 2nd February 2017, 00:46

I assume you are using the bush housings that came off the car? Are they an exact match. When I tried the powerflex bushes I ran into similar problems. The bushes are manufactured to fit OEM bush carriers some aftermarket parts differ in what would normally be unnoticeable ways - until you remove the worn out centre 'rubber' and try and replace with a poly bush. You have two options: get some standard bushes and put those on OR carefully file down the flats on the arm that is having a fitting problem until it only just fits.

Just checking, did both bushes press into the housings with equal ease/difficulty? It can be easy to miss the outer metal ring inside the original bushes. If the inner diameter is slightly small the bush may go in but be distorted (Compressed) making the center hex too tight.

twowheelstony · 2nd February 2017, 13:51

i have a few spare outers so ill measure it all up today and see how it goes .

trikey · 2nd February 2017, 13:57

I bet the difference is in the casting of the arms....

SCP440 · 2nd February 2017, 16:10

If you use original arms they tend to fit a lot easier as they are slightly thinner as they come out of the bush. Non genuine arms tend to be slightly fatter at this point.

You have a couple of options if you want to use your arms. Get a bigger lever and they will go but be prepared for battle. The poly bush will squashed but it does not seem to effect them at all. The other option is to file some metal off the arm, in effect slightly lengthen the hexagon shaped part. You only need a few mm extra.

T-Cut · 2nd February 2017, 18:13

Quote:

Originally Posted by twowheelstony

One piece polyurethene bush fitment

Is this something new? Haven't seen a one piece in PU.

TC

twowheelstony · 2nd February 2017, 23:41

Quote:

Originally Posted by T-Cut

Is this something new? Haven't seen a one piece in PU.

TC

i can only link to pics .

http://www.ebay.co.uk/itm/Rover-75-M...8AAOSwaNBUeKNi

on ebay as
Rover 75 MGZT Front Wishbone Rear Bushes in Duraflex Polyurethane

the arm was the problem alright , it had 2 very prominent casting lines along the sides as you looked at it , the left side one was a lot cleaner , i ground them down a bit and champherd the bush a bit and it went on with some leverage .

SCP440 · 3rd February 2017, 06:44

Quote:

Originally Posted by twowheelstony

i can only link to pics .

http://www.ebay.co.uk/itm/Rover-75-M...8AAOSwaNBUeKNi

on ebay as
Rover 75 MGZT Front Wishbone Rear Bushes in Duraflex Polyurethane

the arm was the problem alright , it had 2 very prominent casting lines along the sides as you looked at it , the left side one was a lot cleaner , i ground them down a bit and champherd the bush a bit and it went on with some leverage .

I am glad you got it sorted but I am not sure those bushes will last that long. The idea of the two piece version is they act like a proper hinge, what is going to move? If they move in the carrier which is what I suspect they will do they could wear out quite quickly. I know the 2 part ones are a lot more expensive but once fitted they should never need doing again.

Steve

T-Cut · 3rd February 2017, 09:07

It will be interesting to hear how they perform. The two piece PowerFlex system became quite popular on the forums, but it's rarely mentioned these days. There were mixed opinions about those too, but no longer term updates are reported as far as I can see. The Duraflex solid PU bush seems to be based on directly opposite principles to the two part PowerFlex low resistance coupling. I'd expect considerable differences in feel and driveability as well as service life. I have the impression that the beefed up rubber bush design derived from the OEM units are more favoured. Is there any convincing evidence that one or other design is the best?

TC

1st February 2017, 23:30	#1
twowheelstony Regular poster 75 v6(broken) , 02 75 2.0 cdt1 05 cdti,03 cdti Join Date: Nov 2012 Location: trim Posts: 44 Thanks: 17 Thanked 4 Times in 4 Posts	one piece polyurethene bush fitment problem . so i got the big red polyurathane bushes for the front of the 75, they were a right NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- to get into the housing , after that the left one went onto the arm on the car with a bit of leverage and wood between the lever and bush. i levered off the car body ,the left went on with some effort but the right side one i just cannot get. the pry bar keeps slipping off the body . the hole where the bush goes onto the arm is a good bit smaller than the part of the arm itself but it was the same on both and one is on ,i can get it half on , bar slips , then it pushes back off .its a hateful job. anyone got any tips on it ? .i spent hours t it today and gave up hoping someone on here can tell me where i am screwing up .

2nd February 2017, 00:46	#3
Avulon This is my second home 1.8t Tourer Join Date: Oct 2011 Location: Tanelorn Posts: 4,830 Thanks: 956 Thanked 1,148 Times in 916 Posts	I assume you are using the bush housings that came off the car? Are they an exact match. When I tried the powerflex bushes I ran into similar problems. The bushes are manufactured to fit OEM bush carriers some aftermarket parts differ in what would normally be unnoticeable ways - until you remove the worn out centre 'rubber' and try and replace with a poly bush. You have two options: get some standard bushes and put those on OR carefully file down the flats on the arm that is having a fitting problem until it only just fits. Just checking, did both bushes press into the housings with equal ease/difficulty? It can be easy to miss the outer metal ring inside the original bushes. If the inner diameter is slightly small the bush may go in but be distorted (Compressed) making the center hex too tight. __________________ Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk) Where?: https://en.wikipedia.org/wiki/Tanelorn Mods/Retrofits: PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors To do: puddle lights; 2 Din cd/nav to fit; boot release button

2nd February 2017, 13:57	#5
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,766 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I bet the difference is in the casting of the arms.... __________________ Lest we forget..

1st February 2017, 23:34	#2
twowheelstony Regular poster 75 v6(broken) , 02 75 2.0 cdt1 05 cdti,03 cdti Join Date: Nov 2012 Location: trim Posts: 44 Thanks: 17 Thanked 4 Times in 4 Posts	hopefully a pic of the bushes shows up there . i have heated the bushes in hot water and lubed with washing up liquid as i thought that oil may harm the polyurethene . is there much involved in pulling the arm off the car any fitting while off?, id rather not do this but if needs be ill have to. pic not loading, there are the solid red poly bushes as seen on ebay .i shoulda got the 2 piece just for ease of use

2nd February 2017, 13:51	#4
twowheelstony Regular poster 75 v6(broken) , 02 75 2.0 cdt1 05 cdti,03 cdti Join Date: Nov 2012 Location: trim Posts: 44 Thanks: 17 Thanked 4 Times in 4 Posts	i have a few spare outers so ill measure it all up today and see how it goes .

2nd February 2017, 16:10	#6
SCP440 I really should get out more....... MG ZT-T 260 Join Date: Feb 2016 Location: Witney Posts: 2,504 Thanks: 6 Thanked 910 Times in 571 Posts	If you use original arms they tend to fit a lot easier as they are slightly thinner as they come out of the bush. Non genuine arms tend to be slightly fatter at this point. You have a couple of options if you want to use your arms. Get a bigger lever and they will go but be prepared for battle. The poly bush will squashed but it does not seem to effect them at all. The other option is to file some metal off the arm, in effect slightly lengthen the hexagon shaped part. You only need a few mm extra.

3rd February 2017, 09:07	#10
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	It will be interesting to hear how they perform. The two piece PowerFlex system became quite popular on the forums, but it's rarely mentioned these days. There were mixed opinions about those too, but no longer term updates are reported as far as I can see. The Duraflex solid PU bush seems to be based on directly opposite principles to the two part PowerFlex low resistance coupling. I'd expect considerable differences in feel and driveability as well as service life. I have the impression that the beefed up rubber bush design derived from the OEM units are more favoured. Is there any convincing evidence that one or other design is the best? TC