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Posted

I have a spare sub frame that I'm going to get powder coated and swap the bushes out for new Poly ones. Looking at the various "How to's" on the subject. would those of you who have done this recommend getting the new poly bushes that come with the outer sleeve, like these form CZP?

 

https://conceptzperformance.com/czp-subframe-sleeve-kit-w-energy-suspension-bushings-nissan-300zx-90-96-z32-55400-74102_p_3146.php

 

It sounds like the worst part is actually cleaning the left over rubber off the outer sleeve, once the inner sleeve and rubber goo has been removed. (I was going to burn them out, as per the many videos on the net show)

 

As an aside, has anyone here actually fitted SPL solid mounts on the sub frame or diff? If so how bad is the ride/noise?

 

All advice welcome, Thanks

Posted (edited)

I can tell you've already got locking collars from reading another thread, do you really want to spend hours removing the old ones compared to a 5 minute job putting locking collars on? Burning them out is the way people do it at home but remember there is a metal collar around the rubber, so once you've burnt and cut out the rubber to get the centre section out, you will have to carefully hacksaw the collar and try to pry it out. Its probably a 1hour + job per collar, so if you feel like new bushes are the way to go... go for it.

 

I know Mantav8 and Dan_300zx have removed them so it might be worth their input of poly vs solid compared to locking & how hard it was.

Edited by Alic
Guest dan300zx
Posted

burn them out them remove in inner skin then fit the new poly bush when i did mine there wasnt a metal sleeve that came with them looks like they have changed the kit a bit.

Posted

I have the solid sub frame and diff mounts, James did the hard part in that one for me. What I can tell you though is that there is a definite noise transmission through them and you will feel the diff back lash on hard over run. I can't comment on that versus Poly. What I can say is that there is NO play with the solid mounts when refitting the frame and I had a mare joggling the frame home.

Guest dan300zx
Posted
I have the solid sub frame and diff mounts, James did the hard part in that one for me. What I can tell you though is that there is a definite noise transmission through them and you will feel the diff back lash on hard over run. I can't comment on that versus Poly. What I can say is that there is NO play with the solid mounts when refitting the frame and I had a mare joggling the frame home.

 

are you using solid dif mounts to? i have full poly polly bush inc the diff. and there is some back lash from the dif are you using a single prop. i dont really really hear much noise from the diff now i have the interior back in, i think a combo of polly sub bushes with stock diff bushes and stock prop would be the best bet for less lash

Posted

Two piece prop, solid diff and solid subframe. Yeah the sound is noticeable but not annoying with an interior. I drove it with a stripped boot and you could hear it full chat over the exhaust, was like being followed by a jet.

Guest dan300zx
Posted

i dont get it that bad i dont even notice really now

Posted (edited)
here the pics of mine

 

 

[ATTACH=CONFIG]102090[/ATTACH]

What sway bar is that mate? Is it much better than the stock sway bar?

Edited by Alic
Posted

Thanks for all the replies guys. Really appreciate it.

 

Dan, the kit in the link above was including a new outer sleeve as many people remove this, not realising that they need to retain it, if fitting new Poly bushes.

 

I think I will go with Poly bushes on the sub frame and diff mounts.

 

I have already started getting the old bushes out, (yes they are a barsteward to remove)

Posted

The good thing for you Howard is that it's a spare subframe, so you can go at it for a while until you're fed up and you can then walk away from it till another day when you're back in the humour for hardship:thumbup:

I had little difficulty in swapping out the diff bushes, blow torch made short work of them:thumbup:

Posted

Yes after 2hrs last night Richie, I had had enough, especially the smell of the burning rubber!, I'm doing it in the garage and that lovely smell can work it way into the house, which Mrs B isn't very impressed with :scared:

Posted
Pressing out old bushes & replacing poly ones requires a fly press ( I think that's the name)

From what I remember it was the front ones!

Some people use a hydraulic press, but when they are 20+ years old, corrosion makes them welded in there so often easier to mutilate them from what i've read.

Posted
Yes after 2hrs last night Richie, I had had enough, especially the smell of the burning rubber!, I'm doing it in the garage and that lovely smell can work it way into the house, which Mrs B isn't very impressed with :scared:

 

AH HA HA HA HA!!! Do it in the garden mate, that's what i did:thumbup:

no wonder the mrs. is mad at you, the house would smell like a bonfire at a pikey camp at Halloween!!:lol:

Posted (edited)

I did the subframe and diff bushes in a day with help from a mate a few years back. I fitted the poly bushes rather than solid after talking to and taking advise from many who had done both.

 

Can't remember where I bought the kit from but think it was Z World or similar. The kit came with outer steel shells and seemed to be the most comprehensive solution leaving nothing of the old to go wrong. Just my OCD I expect but wanted to do it once and only once.

 

All I would say is that it's a full days work from driving in to driving out but the results are well worth it.

 

The sound is a little more "raw", a bit more race car but not annoying at all. More a feel thing to me.

 

I was advised that unless tracking the car, the solid were a bit over the top.

 

A fly press would be great but some thread bar, various sockets and nuts will get you there.

 

Need to take care as the front and rears on the subframe are from memory replaced in a slightly different way.

 

Remove the guts of the bush and cut the outer sleeve with a hacksaw carefully. Then fold inward and cut again if required. Taking your time is the key to success I think with these.

 

Obviously get the powder coating done before fitting the new bushes and make sure the holes are properly blanked off as any powder in there is a nightmare to remove before refitting new steel sleeves.

Edited by Dipstick
Posted
I did the subframe and diff bushes in a day with help from a mate a few years back. I fitted the poly bushes rather than solid after talking to and taking advise from many who had done both.

 

Can't remember where I bought the kit from but think it was Z World or similar. The kit came with outer steel shells and seemed to be the most comprehensive solution leaving nothing of the old to go wrong. Just my OCD I expect but wanted to do it once and only once.

 

All I would say is that it's a full days work from driving in to driving out but the results are well worth it.

 

The sound is a little more "raw", a bit more race car but not annoying at all. More a feel thing to me.

 

I was advised that unless tracking the car, the solid were a bit over the top.

 

A fly press would be great but some thread bar, various sockets and nuts will get you there.

 

Need to take care as the front and rears on the subframe are from memory replaced in a slightly different way.

 

Remove the guts of the bush and cut the outer sleeve with a hacksaw carefully. Then fold inward and cut again if required. Taking your time is the key to success I think with these.

 

Obviously get the powder coating done before fitting the new bushes and make sure the holes are properly blanked off as any powder in there is a nightmare to remove before refitting new steel sleeves.

 

Thanks for the reply and information.

 

I will keep an eye out for getting the front and rear bushings round the right way.

  • 1 month later...
Posted (edited)

Well a little update. I removed the old bushes, what a pig of a job, that was!

 

IMG_4181.jpg

IMG_4164.jpg

IMG_4168.jpg

 

Should be collecting the powder coated frame tomorrow, then just need to finish getting the old one off the car.

Edited by bigh
Posted

I've removed 4 sets of subframe bushes now .I use a good quality hole cutter both sides to remove most of rubber and centre tube then hacksaw thew bush case but don't cut into subframe.Then chisel bush in on itself folded in and hammer it out .Ive done all 4 in2 hrs .

Posted

Well today the subframe was finally removed from the car, not to bad once everything was out the way. Nearly missed the 2x feeds from the top of the diff, that go to the oil cooler, but seeing as I am going to remove it anyway I just cut the hoses to the cooler.

 

IMG_4333.jpg

 

IMG_4334.jpg

 

Tomorrow I will start remove the control arms etc so I can get all the parts powder coated.

Posted

Oh sorry, neither of mine had any diff cooler lines or an oil cooler.

 

Also what happened to the HICAS on that? It looks absent, but there is no lockout for it

Posted

Already remove the HICAS Alic, jusr prior to dropping the subframe. A nice new Driftworks lock bar is going back eventually.

 

Still a long way to go as I will be replacing all the rear brake lines at the same time.

 

No worries about the oil lines, I saw them before I went to far, just couldn't get to them until the frame had dropped slightly.

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