Solid subframe bushing install problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jordang328is · 02-26-2015, 03:47 PM

Okay so I'm in the process of installing solid aluminum subframe bushings on my S13. Got the top half of all four in no problem, but after flipping the subframe to press in the lower half of the bushings, I noticed one of the holes in the subframe was not perfectly round. It was enough that the mallet could not hammer them in, so I put a big bolt through the two and started cranking it down. Halfway in I noticed that the aluminum was being scraped off by the subframe and bunching up at the edge. It's wedged in there pretty good now and it's a little crooked. I'm not really sure where to go from here. I really don't want to just keep forcing it, and don't even think I can force it in at this point...
For some reason the site is blocking me from uploading pics? Will post as soon as i figure out why.

LoneWolfK16 · 02-26-2015, 08:53 PM

https://www.youtube.com/watch?v=f5hLYut2nMM

NISR20MO · 03-05-2015, 07:02 AM

Sledgehammer. Not kidding, it's either that or a hydraulic press. This is of course assuming you have removed the metal sleeve that the original rubber bushing was bonded to.

They are an interference fit. Shaving off some material from the bushing is expected and will not affect the function at all, it is regular to experience the bushings being self clearanced by the hole it has to fit into.

I slammed mine in with a sledgehammer, only took one or two good licks each.

ThanatosG · 03-05-2015, 08:01 AM

I would recommend a press fit. I think the PBM's are a little more loose from a tolerance stand point compared to the rest. I think as long as you get them in and they're flush / not deformed at the mounting surface you should be ok.

Ryanks14 · 03-05-2015, 11:28 AM

I second the sledge method. I did it, some material was shaved away, but the fit it tight, the subframe was not deformed and the rear end is super solid.

02-26-2015, 03:47 PM	#1
jordang328is Join Date: Jan 2014 Location: Sacramento Age: 30 Posts: 27 Trader Rating: (0) Feedback Score: 0 reviews	Solid subframe bushing install problem Okay so I'm in the process of installing solid aluminum subframe bushings on my S13. Got the top half of all four in no problem, but after flipping the subframe to press in the lower half of the bushings, I noticed one of the holes in the subframe was not perfectly round. It was enough that the mallet could not hammer them in, so I put a big bolt through the two and started cranking it down. Halfway in I noticed that the aluminum was being scraped off by the subframe and bunching up at the edge. It's wedged in there pretty good now and it's a little crooked. I'm not really sure where to go from here. I really don't want to just keep forcing it, and don't even think I can force it in at this point... For some reason the site is blocking me from uploading pics? Will post as soon as i figure out why.

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02-26-2015, 08:53 PM	#2
LoneWolfK16 Zilvia Member Join Date: Dec 2012 Location: Japan Posts: 229 Trader Rating: (7) Feedback Score: 7 reviews	https://www.youtube.com/watch?v=f5hLYut2nMM

03-05-2015, 07:02 AM	#3
NISR20MO Zilvia Junkie Join Date: Aug 2006 Location: Raleigh NC Age: 34 Posts: 490 Trader Rating: (29) Feedback Score: 29 reviews	Sledgehammer. Not kidding, it's either that or a hydraulic press. This is of course assuming you have removed the metal sleeve that the original rubber bushing was bonded to. They are an interference fit. Shaving off some material from the bushing is expected and will not affect the function at all, it is regular to experience the bushings being self clearanced by the hole it has to fit into. I slammed mine in with a sledgehammer, only took one or two good licks each.

03-05-2015, 08:01 AM	#4
ThanatosG Zilvia Member Join Date: Dec 2006 Location: Dayton OH Posts: 237 Trader Rating: (2) Feedback Score: 2 reviews	I would recommend a press fit. I think the PBM's are a little more loose from a tolerance stand point compared to the rest. I think as long as you get them in and they're flush / not deformed at the mounting surface you should be ok.

03-05-2015, 11:28 AM	#5
Ryanks14 Leaky Injector Join Date: Aug 2011 Location: Memphis Age: 31 Posts: 63 Trader Rating: (0) Feedback Score: 0 reviews	I second the sledge method. I did it, some material was shaved away, but the fit it tight, the subframe was not deformed and the rear end is super solid.