Suggestions on installing poly bushings

Suspension and other discussion

Suggestions on installing poly bushings

Postby celigts » Wed Nov 21, 2012 5:18 pm

Hey guys so I finally paid for my gt4 poly bushings :/ but I have them in transit now non the less and plan on doing my subframe and the poly bushings all at once since ill be unemployed again. I wanna take advantage of that and get this done before I start looking for another job so cuz I have the time to do it.

Ill be doing it all at home and wanna know what's a good lubricant to use for both so they can freely move however they want without damaging the bushing.
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Re: Suggestions on installing poly bushings

Postby fussellbug » Wed Nov 21, 2012 6:00 pm

The GT4 poly bushings should have silicone grease included in the package.
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Re: Suggestions on installing poly bushings

Postby Killtodie » Wed Nov 21, 2012 6:50 pm

I used Mobile 1 synth grease when I did my Conquest.

GREASE everything, inside and out. Clean everything too, if you are burning out the old bushing, wire brush everything so the metal is nice and shiny.

and grease everything! First time I did my bushing I had to later remove the subframe and redo everything (also paint it all in por15) cause I had so much squeaking. The little packet that comes with grease is never enough.
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Re: Suggestions on installing poly bushings

Postby Hotrodhendrix » Wed Nov 21, 2012 6:59 pm

Killtodie wrote:I used Mobile 1 synth grease when I did my Conquest.

GREASE everything, inside and out. Clean everything too, if you are burning out the old bushing, wire brush everything so the metal is nice and shiny.

and grease everything! First time I did my bushing I had to later remove the subframe and redo everything (also paint it all in por15) cause I had so much squeaking. The little packet that comes with grease is never enough.


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Re: Suggestions on installing poly bushings

Postby celigts » Wed Nov 21, 2012 8:29 pm

Por15 does sound like an option. Would the por be affected if I was powder coating the arms and stuff that fits in a household oven? Anyone know. Also should I stay with a silicone based grease as mentioned or packing grease, the synthetic grease.

Burning the bushings out is my plan but! Will it compromise the steel strength? Make it weaker?
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Re: Suggestions on installing poly bushings

Postby Killtodie » Wed Nov 21, 2012 8:58 pm

Either use POR15 or powder coat.

Burning bushing should not damage the steel, you really only let it burn for like 2 minutes so the rubber just falls out. It never gets red hot, just a small flame. Just cleanup all residue afterwards.

This is the grease I recommend. You can use it for bearings and any other lubrication. It's good against water resistance and rust
http://www.mobiloil.com/USA-English/Mot ... rease.aspx

POR15 is sensitive to UV so if you want, you can top coat it with some paint, primer it and then paint over it. But since this is chassis stuff, it will never see the light of day or get UV damaged.
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Re: Suggestions on installing poly bushings

Postby Fox 21 Alpha » Wed Nov 21, 2012 9:09 pm

Did you guys coat the actual inside of the bushing surface (on the subframe) with POR15? I was considering it since I have some rust I had to remove, but I'm wondering if it will be too thick and not allow the bushing to fit in.
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Re: Suggestions on installing poly bushings

Postby Killtodie » Wed Nov 21, 2012 9:18 pm

No. The paint will rub off. Grease all points where bushings touch metal. Just get a wire brush and attach it to a drill and clean the inside surface

Grease the inside of the control arm, the outside of the bushings, the inside of the bushing, the metal rod that goes through the bushing.

Any access grease will get squeezed out, just wipe it.


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Re: Suggestions on installing poly bushings

Postby underscore » Thu Nov 22, 2012 2:05 am

I got my RC's set pressed by a shop, but for my GTS I'm gonna try to do it with a DIY puller, I posted up the concept in another thread a few weeks back. Burning that rubber stunk like hell and seemed to take forever for the larger subframe bushings so I won't bother with that again.

As far as grease goes the GT4 Racing kits comes with a tonne of grease, I have no clue what it really is cause it's labelled in Polish but it seemed to work well on my motor mounts and swaybar bushings.
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Re: Suggestions on installing poly bushings

Postby celigts » Thu Nov 22, 2012 4:16 am

underscore wrote:I got my RC's set pressed by a shop, but for my GTS I'm gonna try to do it with a DIY puller, I posted up the concept in another thread a few weeks back. Burning that rubber stunk like hell and seemed to take forever for the larger subframe bushings so I won't bother with that again.

As far as grease goes the GT4 Racing kits comes with a tonne of grease, I have no clue what it really is cause it's labelled in Polish but it seemed to work well on my motor mounts and swaybar bushings.


I bet if you used a respirator you wouldn't have smelt it :) many nasty things stay out if that mask.
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Re: Suggestions on installing poly bushings

Postby underscore » Thu Nov 22, 2012 5:33 am

the stink lingered for about an hour and I only had the torch on the bushing for ~2 minutes :(
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Re: Suggestions on installing poly bushings

Postby Killtodie » Thu Nov 22, 2012 6:34 am

underscore wrote:the stink lingered for about an hour and I only had the torch on the bushing for ~2 minutes :(


do it outside bro
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Re: Suggestions on installing poly bushings

Postby Landon » Thu Nov 22, 2012 8:16 am

When I did my rear suspension bushings(GT4 poly) I only used the grease that was supplied and I haven't heard a squeak since and its been a good 4 years now. If you could get access to a press that would make life a lot easier with both removal and install. That or a puller set-up might work as well. Good luck man!
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Re: Suggestions on installing poly bushings

Postby celigts » Thu Nov 22, 2012 6:50 pm

Landon wrote:When I did my rear suspension bushings(GT4 poly) I only used the grease that was supplied and I haven't heard a squeak since and its been a good 4 years now. If you could get access to a press that would make life a lot easier with both removal and install. That or a puller set-up might work as well. Good luck man!


Well I'm very lucky I do have a farmer friend with a hydronic press. Now to find him on a time he isn't busy lol it's gonna be hard to do it now dang it. Parents are trying to sell the house... Might not be able to scatter the car over the garage lol

If gt4 supplies with a sufficient amount or grease ill be fine.

Don't think weather is gonna make the difference right?
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Re: Suggestions on installing poly bushings

Postby Landon » Sat Nov 24, 2012 4:18 am

well what way would weather effect it? lol. if you do it outside might be pia if it snows or something. but if you can get access to that press that will make your life a hell of a lot easier. Just get all the parts off your car and out with the old, in with the new bushings and you're good. thats what i did and it was fairly straight forward. check my project if you want to see some crappy pictures of what i did. lol
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