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Post by nookey on Oct 25, 2020 11:28:16 GMT
My winter project is to refresh my suspension bushes in my Mk2, the car is only used for Hillclimb / Sprints and driving to and from events so not worries about general road comfort. I currently suffer from a few knocks and bangs at the moment when cornering hard and want to replace the original 22 year old items.
What has everyone else used and can recommend on experience?
My short-list, today, is Super-Pro or the uprated IL Motorsport Rubber bushes avaialable from MX5 Parts.
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Post by Zed. on Oct 25, 2020 12:25:12 GMT
I've a personal hatred of any polybushing material, unlike oem rubber the aftermarket 'poly' has little qc & conformity of 'mix' so can have varied hardness  if I was buying rubber it would be oem Mazda for the reasons above  AND (in my experience with rallycars) poly has a short lifespan - not great with the high pricing associated with the Mx5 scene  subject of poly & rallycars, I've recently replaced poly with oem Fomoco rubber bushings in a mk1 Escort '4 link' setup as the poly (unknown yellow make) had degraded or dried out & was splitting / cracking & falling apart - on a newly built car! as to my 5, I'm making pom / delrin bushings for evrything, iirc, hillclimb road / road modified class rules forbid metal joints / bushings so spherical / rosejoints are out unfortunately  downside with pom is cost, material for a single bush costs ~£5 + stainless steel to make the inner sleeve, obviously if I was buying in bulk this would drop BUT theres also machining time to be considered.... Rich. |
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Post by Dweenimus on Oct 25, 2020 12:27:51 GMT
I recently replaced all my bushes to the IL Motorsports ones and they made a massive improvement with the bum dyno. Pita to fit over poly bushes though.
My car is rarely used, and when it is it's for track, autosolo and fun drives
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Post by howardb66 on Oct 25, 2020 17:08:02 GMT
I agree with Zed on this one. Had poly bushes in my TVR & they turned to cheese after a season, initially very unforgiving/then ok/then worn out & banging.....
On a different subject nookey- what tyres are you running next season?
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jon
Chats A Lot
Posts: 270
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Post by jon on Oct 25, 2020 17:17:25 GMT
To add some balance, I've had Superpro on my 5 for the past 12 or so years and they are still fine.
Phil @ P5 used to say that the Superpro ones were the only 'good' poly bushes for the '5 - the flo-flex / powerflex / polybush kits were all too hard / poor quality and didn't last.
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Post by nookey on Oct 25, 2020 20:58:29 GMT
I agree with Zed on this one. Had poly bushes in my TVR & they turned to cheese after a season, initially very unforgiving/then ok/then worn out & banging..... On a different subject nookey- what tyres are you running next season? Hi Howard, I'm going to order some Extreme VR2 W3's for next year, I know they'll probably be only legal for one season but want to give them a go and improve my PB. |
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Post by nookey on Oct 25, 2020 21:01:44 GMT
Thanks everyone for your input, and having searched a bit nore online it seems that most would agree with Jon and recommend Super Pro bushes but the other, cheaper options, all come with limitaitons.
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Post by wannabe on Oct 26, 2020 10:11:31 GMT
Where about are you, nookey? Perhaps someone local(ish) with polybushes might be able to give you a ride  |
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Post by dickie on Oct 26, 2020 16:14:08 GMT
Hi,
My Eunos has a full set of IL motorsport bushes and diff void bushs as well. Running on brand new OEM Bilsteins and springs. extended lower ball joints.
I can say it is a nice set up for me which is spirited B roads with the odd bit of sprinting, I have missed out on hillclimbs this year.
It all feels nice and taught, I can feel the PS3's sqirm about with this set up but with the NS2R set it feels like its on rails.
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jimb
New Here
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Post by jimb on Oct 26, 2020 20:54:45 GMT
Dickie, did you have a chance to drive the car with the same set up, but old standard bushes? Mine is an AutoSolo car on original bushes, which look ok, and I am not sure whether it is worth the time and money to replace them, or what with. (99 mk2)
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Post by nookey on Oct 26, 2020 20:58:13 GMT
Where about are you, nookey? Perhaps someone local(ish) with polybushes might be able to give you a ride [ Good idea, I’m in Southampton.. |
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Post by wannabe on Oct 27, 2020 0:34:12 GMT
Where about are you, nookey? Perhaps someone local(ish) with polybushes might be able to give you a ride [ Good idea, I’m in Southampton.. Not near me, unfortunately! There are a few people in that neck of the woods, though, IIRC |
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Post by nookey on Oct 27, 2020 7:28:08 GMT
To add some balance, I've had Superpro on my 5 for the past 12 or so years and they are still fine. Phil @ P5 used to say that the Superpro ones were the only 'good' poly bushes for the '5 - the flo-flex / powerflex / polybush kits were all too hard / poor quality and didn't last. Hi Jon, do you have to re-grease every year or is it fit and forget with Superpro? |
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jon
Chats A Lot
Posts: 270
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Post by jon on Oct 27, 2020 8:35:39 GMT
Fit and forget - I've never regreased mine.
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Post by mrwallace on Oct 27, 2020 9:40:56 GMT
I've had the full superpro running gear kit fitted since 2018 and was pleasantly surprised by the only minor increase in NVH. They sharpened the car up nicely though.
I've had no issues with them and not re-greased them after quite a lot of track driving.... although I do have an unidentified knock now!
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