filling subframe bushings with poly

[QuickSpoolSR]

so today i dropped my subframe, and decided to fill the bushings with polyurethane, anyway, i went to home depot and bought tubes of volcom polyurethane, and i put it in the busings, and it is taking forever to dry, i asked my stepbrother, who does construction, about it, and he said that volcom doesnt get hard? does anyone know about this?

[johngriff]

That sucks you did that.

I would have all your problems fixed on monday.....

hahah

[QuickSpoolSR]

what does that mean?, it will dry by monday?

[jamg]

you were suppose to use 3M window weld.

[clark]

why don't you just replace them with poly or aluminum?

[racepar1]

Why? Just buy subframe bushing collars! You can get em for like $45 MAX.

[johngriff]

Just wait till monday!

Dropping the subframe is a PITA!

[didderson]

I vote PBM solid alum risers! You will have to give it plenty of days to cure unless you want it squishing back out when you drive. I did this with my extra trans mount.

[jamg]

would i have to drop the frame to put on Al spacers?

[az_240]

subfame COLLARS = just something that takes up space inside the bushing. Takes 10 min to install but not as effective.

subframe risers/aluminum bushings = more effective.... dropping subframe is required as well as burning out the old bushings.

[Bigsyke]

Even if filling the bushings with poly, how would you be dead sure they were 100% centered and aligned?

If anything, get the spacers, fill the inside of the bushings with window weld, and squish the spacers on to pack in the poly. It will create its own mold

[racepar1]

subfame COLLARS = just something that takes up space inside the bushing. Takes 10 min to install but not as effective.

subframe risers/aluminum bushings = more effective.... dropping subframe is required as well as burning out the old bushings.

Subframe collars are more effective then you are giving them credit for. They are definitely more effective then window weld and IMO they are more effective then full poly subframe bushings, given the amount of labor to install full bushings.

[murda-c]

Subframe collars are more effective then you are giving them credit for. They are definitely more effective then window weld and IMO they are more effective then full poly subframe bushings, given the amount of labor to install full bushings.

They'll still only last for a few months to years as the stock rubber gets more worn.

I can feel mine loosening up again.

[racepar1]

They'll still only last for a few months to years as the stock rubber gets more worn.

I can feel mine loosening up again.

I'm sorry, but I do not believe this to be true. I have been running kazama collars for YEARS and I feel no difference whatsoever. I used to run canyons all the time, I currently run a good amount of track events (not so much this year though), and my 240 was my daily driver. My car is the most responsive 240 (suspension wise) that I have ever personally driven and I have driven a LOT of 240's.

[landins13]

i would def get a full poly bushing set if your gonna go through the trouble. squezing some toothpaste in there would have the same effect as the shit you put on there

[murda-c]

I'm sorry, but I do not believe this to be true. I have been running kazama collars for YEARS and I feel no difference whatsoever. I used to run canyons all the time, I currently run a good amount of track events (not so much this year though), and my 240 was my daily driver. My car is the most responsive 240 (suspension wise) that I have ever personally driven and I have driven a LOT of 240's.

Maybe your bushings were in better condition or something?

Iunno i need to replace mine, my subframe movement is annoying.

[Chrischeezer]

lol.. you need the 3m window weld
that stuff doesn't do anything,

[QuickSpoolSR]

i just looked on their website, and it says it cures at a rate of 1/16th of an inch every 24hours. and im pretty sure it gets hard, its ment to seal like windows and shit

[Bigsyke]

after driving your car its all going to squish out, and be uneffective due to subframe movement

[QuickSpoolSR]

well, thankfully i wont be driving it for a while since i dont have enough for an engine right now, i painted my subframe neon pink, ill post some pics up, it looks amazing

[s14_mike]

doesn't energy suspension make a poly insert for the stock subframe bushings? I think i saw it in a project car magazine? dunno but i could be wrong it looked like a large three or four sided castle nut that slipped into the holes in the original rubber bushing. Maybe these poly inserts plus subframe collars could prove to be sufficient for some?

[singlecamslam]

Next time dude, just get new bushings or aluminum ones. Its really not that hard. When i did mine i though it was going to be hard but its really not. Hardest part is cutting the metal sleeve out of the subframe.

[kognition]

This thread reminds me of that other thread last week where the guy wanted to make wood motor mounts. ;)
Aluminum collars. FTW.

[Ali 556]

collar etd are usless...

get this or go home

http://www.splparts.com/main4/parts/NissanShared/Suspension/Subframe/SPLSubframeBushings.jpg

it took me 3 hrs to drop - push out - install soild bushing and reinstall the supframe....

dunno about you guys, i like it stiff

[!Zar!]

Why are people talking about subframe risers.

How do you all even know he wants to change his squat?

[racepar1]

dunno about you guys, i like it stiff

:ugh:

What exactly are you trying to tell us?

:D

[Ali 556]

:ugh:

What exactly are you trying to tell us?

:D

;) you know me :naughty:

[Bigsyke]

collar etd are usless...

get this or go home

http://www.splparts.com/main4/parts/NissanShared/Suspension/Subframe/SPLSubframeBushings.jpg

it took me 3 hrs to drop - push out - install soild bushing and reinstall the supframe....

dunno about you guys, i like it stiff

Just got those in the mail, very excited!

IMO solid subframe bushings are a must, and I cant wait to put mine in.

[Ali 556]

Just got those in the mail, very excited!

IMO solid subframe bushings are a must, and I cant wait to put mine in.

the are the shit...noisy tho :hsdance: :cry:

[HyperTek]

i filled mine when i replaced the subframe.. i forget which stuff i buy, but its brown, gets hard. But i also had subframe spacers before and after i did this, so i couldnt tell you exactly how effective it was.

[Bigsyke]

^^^home depot liquid nails poly, gets real hard, but its also gets brittle with some heat and vibration.

[singlecamslam]

the are the shit...noisy tho :hsdance: :cry:

For real, at 50MPH i cant hear anything but a fat buzzing noise inside the car.

[cured13]

Can anybody share theirs experience and opinion about this kit from PDM/Whiteline
http://www.pdm-racing.com/products/imag/KCA349closeup.jpg

[johngriff]

Don't do it if you are going to be taking it all apart anyways.

[garbury]

i love my energy suspension subframe bushings. Bought the z32 ones and they were a tad long but the nut threaded and held just fine for the past 3 years. The subframe only makes a solid thud when hitting bumps and road debris but is buttery smooth on clean roads. The rear end is solid though so I have no complaints, plus it only cost me like 60 bucks. Do it right the first time and you don't have to ever worry about it again.

[Spring Break '92]

+1 for the ES inserts. Easy enough to install, buy not as easy as collars. My brother has the ES inserts in his subframe, I have aluminum collars in mine. I like both.

[johngriff]

Here is what I have been teasing for the last week.

You guys are going to love this. Try this before collars or pineapples are full bushing replacement. Inexpensive, easy install and you will notice a big difference.

John

RPSport.net Presents! (http://www.rpsport.net/product)

http://zilvia.net/f/advertiser-specials-sales/259727-new-s13-product-rpsport-subframe-support-brace.html

[ixfxi]

Here is what I have been teasing for the last week.

You guys are going to love this. Try this before collars or pineapples are full bushing replacement. Inexpensive, easy install and you will notice a big difference.

John

RPSport.net Presents! (http://www.rpsport.net/product)

http://zilvia.net/f/advertiser-specials-sales/259727-new-s13-product-rpsport-subframe-support-brace.html

not trying to sound like a dick, but there is a lot of talk about r&d that went into that product... a piece of fucking metal. yes, its thicker. yes, it is probably stronger... but nonetheless, its a piece of metal.

kudos for it existing, as for the marketing.. i think the item would sell without the hype.

[DALAZ_68]

Here is what I have been teasing for the last week.

You guys are going to love this. Try this before collars or pineapples are full bushing replacement. Inexpensive, easy install and you will notice a big difference.

John

RPSport.net Presents! (http://www.rpsport.net/product)

http://zilvia.net/f/advertiser-specials-sales/259727-new-s13-product-rpsport-subframe-support-brace.html

i still think replacing the bushings for a track car that is 20+ years of age need ot be changed...

[johngriff]

not trying to sound like a dick, but there is a lot of talk about r&d that went into that product... a piece of fucking metal. yes, its thicker. yes, it is probably stronger... but nonetheless, its a piece of metal.

kudos for it existing, as for the marketing.. i think the item would sell without the hype.

We really did go through allot of R/D to make sure it was perfect. Yes straight forward it is, but it has been run through the mill to make sure we were not just releasing junk.

i still think replacing the bushings for a track car that is 20+ years of age need ot be changed...

I agree too, but this part could be a great fix for people to start with. Dropping the subframe is a big job.

[Bigsyke]

I heard dropping the subframe is as easy as doing a 3 hour brake job, then I hear dropping the subframe is like a tranny swap.

Is it really that hard? 4 studs, 4 nuts, 2 calipers and your rear struts.

[apex]

u forgot the drive shaft i did mine last week put in the pbm risers
its e-z to drop but gettin back in i wish i would of had sum help but i got it
also when i get paid i might just get sum of those Subframe Support Brace mine
are bent anyway

[garbury]

subframe is cake to drop. much less involved than a clutch job since all the bolts are easily accesible and reassembly is cake as well. The difficult part in doing subframe bushings is getting the old ones out, getting the subframe to the workbench is the easiest part.

getting subframe out: 30 mins
Melting/cutting old bushings out without damaging subframe: 2 hours
Reassembly: 40 mins (have to align the jack to bolt back up


I have a hard time believing that thicker support braces are going to help prevent subframe clunking due to worn bushings since they will still be loose. the braces may help stiffen everything up, but fixing a problem should start at the root of the problem, not taking easy bandaid approaches

[Shadowhunter]

With something as accurate as a subframe that alot of forces are constantly being applied to(drivetrain and suspension movement) I don't know why you would want to go the cheap route and fill them with some goo that is a sort of polyurethane that ultimately you really don't know the properties of. Will it melt with extreme heat? Will it crack when huge torque loads are applied to it? Will it just crumble to peices the first time you take a corner hard? These are questions you should be asking yourself before you go the cheap route. Especially with something as important as your subframe. That's why specific products are made with specific tolerances. Energy suspension does not just go out and use any ole urethane,throw it in the mold press and off you go. The ES inserts are $20 bucks the aluminum ones I bought for $65. When you think about what it's going into it's a relativly small sum to pay for doing it right. That is just my opinion but more power to ya if you wanna go the home depot route.

[racepar1]

not trying to sound like a dick, but there is a lot of talk about r&d that went into that product... a piece of fucking metal. yes, its thicker. yes, it is probably stronger... but nonetheless, its a piece of metal.

kudos for it existing, as for the marketing.. i think the item would sell without the hype.

:werd:

I couldn't have said it better myself. Kudos for the idea, but "R&D" is a bit of a stretch. Now should you have re-made the entire bracket assembly as a single stronger piece then there is some real R&D there. I can see how it would help and it's a good idea, but there is no need for all the hype.

[ixfxi]

With something as accurate as a subframe that alot of forces are constantly being applied to(drivetrain and suspension movement) I don't know why you would want to go the cheap route and fill them with some goo that is a sort of polyurethane that ultimately you really don't know the properties of. Will it melt with extreme heat? Will it crack when huge torque loads are applied to it? Will it just crumble to peices the first time you take a corner hard? These are questions you should be asking yourself before you go the cheap route. Especially with something as important as your subframe. That's why specific products are made with specific tolerances. Energy suspension does not just go out and use any ole urethane,throw it in the mold press and off you go. The ES inserts are $20 bucks the aluminum ones I bought for $65. When you think about what it's going into it's a relativly small sum to pay for doing it right. That is just my opinion but more power to ya if you wanna go the home depot route.

polyurethane isnt anything out of the ordinary, the have make the molds the proper size and there you have it, bushing. i would say that less work goes into making the urethane junk in comparison to the oe rubber style bushings that are bonded to the metal inserts. not to mention the factory optimizes the bushing size and durometer for that specific bushing location, its all part of the suspension.

the rear end of the car doesnt have any heat to deal with, so its more a matter of using the proper adhesive if you do decide to fill the bushings. i would use a 2 part urethane that will cure, as opposed to any 1 part moisture cure system which will not fully harden. yep, its more expensive.. but its the only real way to do it. ive been considering long and hard wether to fill my nismo subframe mounts before installing them because they are no longer available.


:werd:

I couldn't have said it better myself. Kudos for the idea, but "R&D" is a bit of a stretch. Now should you have re-made the entire bracket assembly as a single stronger piece then there is some real R&D there. I can see how it would help and it's a good idea, but there is no need for all the hype.

hehe tell me about it. its like hi, we measured a flat piece of metal, its length and thickness and had 2 holes drilled. ide say more work went into the logo than the design of the metal.

[QuickSpoolSR]

first of all dropping the subframe is easy, and i checked them today, and the poly feels like hard rubber, but im going to wait a week or two just to be safe, and i dont know why everyone is freaking out about this, it is still a stock bushing that is totally safe, it is just filled with poly to make it stiffer... everyone needs to chill lol

[ericcastro]

.............Now should you have re-made the entire bracket assembly as a single stronger piece ..............

can this happen??

good idea racepar!

[CrimsonRockett]

Really?

Bumping a 4 month old thread just to say that?

Come on.