Poly bush colours

[SteveT]

Still working feverishly on the 6 shell and it’s coming together, but as a sideline ( whist I’m working a late shift ) I’m blasting and re-bushing the rear wishbones. I’ve been given a set of yellow bushes for these and I’m wondering if the colour means anything ( hardness? ). Also, are these a good thing to fit or does it make the ride much harder? 

Thanks in advance for any advice. 

Steve

[oldtuckunder]

yellow seem to be the bushes rimmers supply for the chassis end of all wishbones but as far as i remember nowhere else, although they do offer the red firm, and blue comfort as well. i have no idea what hardness they are and rimmers seem very quiet on the subject also. if you look at the polybush site they claim to do red, orange and blue and no mention of yellow. make of it what you will but if i had some i'd phone rimmer and ask them, i have a suspicion that although made of poly they aren't actually polybush manufacture.

alan

[Nick Jones]

The colour isn't necessarily indicative of hardness as the maker is a factor in that too.  Do you know what make they are?

They won't make the ride harder as such, but may increase transmitted noise and give a bit of harshness dependent on how hard they are.  In some areas they also increase the loading put onto the suspension member and bracketry due to reduced compliance.  

My own view is that for road cars you don't really want them much harder the the original rubber items.  They also score by being generally more durable than the rubber components currently available though not necessarily more durable than the OE bushes.

[SteveT]

Thanks for the replies guys. The make is Super Flex with a part No. SPF077. Looks like they’re made in Australia. Do you think I may be better off going for standard rubber then or using these and seeing how it goes?

[Nick Jones]

As you have them I'd use them.  Bit surprised by the colour though as in my experience Superflex are always blue except for the super-hard ones which are red (normally where they replace previously nylon components)

Superflex UK (Chris Witor in fact) have this to say about hardness

https://www.superflex.co.uk/hardnessguide.php

[SteveT]

Thanks for the link Nick. I’ll try and bing a pic up tomorrow. May as well use them as I have them. I’m guessing they’re 25 years old so the colours may have changed. 

[toofast2race]

The rear trailing arms used to be  yellow from Chris - they are a huge improvement over standard and easier to fit. I clean/polish the trailing arm with a small flap wheel and then fit with some rubber grease (without the steel bush)  using some threaded bar and some large washers. Here are mine - fitted in the mid 1990's 

Here are mine - fitted i

 

 

[SteveT]

Sounds good to me. Will bing em in and see how it goes. Cheers for the help guys. 

[RogerH]

Hi Folks,

 PowerFlex do yellow PU bushes  https://www.powerflex.co.uk/about-us

Used for engine mounts, diff and subframes.

For suspension stuff they recommend their Purple bushes.

 

Roger

[oldtuckunder]

on the subject of suspension bushes has anyone come across small triumph front wishbone bushes in black plastic/nylon?  i have all the wishbones off the red spit bar 1, and all are fitted with a pair of black nylon top hat bushes with a central metal sleeve. they are obviously as hard as nails but there sure as hell isn't a mm of play in them. one top wishbone seems to have the normal problem of the sleeve rusted to the through bolt so i may end up having to cut through the bolt either side of the bush which will probably wreck the bush. i do have it soaking just in case i may be able to shock it free, but many wasted hours in the past indicates that this will probably be unsuccessful.

so just seeing if i can track down a replacement.

alan

[zetecspit]

http://www.wolfitt.com/

he makes/sells them

[oldtuckunder]

ok found them they are a jon wolfe item

alan

[oldtuckunder]

thanks, posts crossed in the mail

alan

[zetecspit]

Moos (Triumphtune) used to sell nylon bushes, before poly became available. So could well be theirs, depending on age. I think Jons bushes are a fairly recent addition to his range. May be a different hardness?

[oldtuckunder]

thanks for info, but have found out that they did come from jon w.

[oldtuckunder]

wow sometimes you get lucky, put a massive g clamp on the bolt with a spacer to clear the bolt head, actually used a sleeve wheel nut on the thread end so as not to damage it, wound it up as tight as it would go, left it for two hours, came back gave the clamp one tiny further tweak and it went pop and the bolt freed from the internal sleeve and bolt then came cleanly out. so no new bushes required, but have ordered a set of new long shank bolts, as these wern't and apart from the crap wear that the short shank std bolts are prone to, not having a threaded portion inside the sleeve also helps prevent this kind of seize problem.

alan