Why does my bumper sag? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Nikzilla · 12-25-2013, 04:57 PM

I bought this car a couple of months ago, and now she's my project.

I have pretty bad bumper sag, and it bothers me.

I wanna fix it right now since I have the car under a knife and I'm waiting for parts, so I've got free time.

This car is a 1990, so it was originally a pignose bumper that was swapped by the previous owner (hence the color mismatch).

Can anyone tell me what's causing this?

Any help would be much appreciated, otherwise I'll just try to make my own support brackets.

ahel13 · 12-25-2013, 06:01 PM

Could of been in an accident even a small one can cause it to move. Make sure every bolt is in and no zip ties. And you got pig nose fenders on a chuki bumper are my thoughts

Nikzilla · 12-25-2013, 06:03 PM

Quote:

Originally Posted by ahel13

Could of been in an accident even a small one can cause it to move. Make sure every bolt is in and no zip ties. And you got pig nose fenders on a chuki bumper are my thoughts

They have different fenders?????

ahel13 · 12-25-2013, 06:06 PM

The pig nose has no holes but chuki does for the bumper extensions but other than that there the same. Make sure all the bolts from the fender to the bumper are tight pull the bumper towards the fenders when titening so u don break ur fenders haha

Nikzilla · 12-25-2013, 06:08 PM

Quote:

Originally Posted by ahel13

The pig nose has no holes but chuki does for the bumper extensions but other than that there the same. Make sure all the bolts from the fender to the bumper are tight pull the bumper towards the fenders when titening so u don break ur fenders haha

Ok, but are there supposed to be any supports?

My bumper is just bolted on at the top 4 bolts to the frame, and then just to the fenders.

Am I missing any pieces?

P.S. It has a large FMIC

ahel13 · 12-25-2013, 06:09 PM

Make sure the bumper support is in along with foam.

Nikzilla · 12-25-2013, 06:10 PM

Quote:

Originally Posted by ahel13

Make sure the bumper support is in along with foam.

What does the bumper support look like?

ahel13 · 12-25-2013, 06:10 PM

U can use the stock bumper support and cut it but most make a bash bar or don't run one

Nikzilla · 12-25-2013, 06:13 PM

Quote:

Originally Posted by ahel13

U can use the stock bumper support and cut it but most make a bash bar or don't run one

Yep, don't have the bumper support.

This is what it looks like with the bumper and lights off.

What would be the best course of action?

ahel13 · 12-25-2013, 06:19 PM

Ya with a front mount the support has to be cut out or make a support

Nikzilla · 12-25-2013, 06:26 PM

Quote:

Originally Posted by ahel13

Ya with a front mount the support has to be cut out or make a support

Ok, quick question. How does the support work? Does the bumper just rest on it, or does it bolt on to it?

I feel like I have 3 options here.

1. Buy OEM bumper support and cut it
2. Buy a bash bar
3. Try to make one myself

ahel13 · 12-25-2013, 08:06 PM

Ya it slides on it but don't think it bolts on but don't quote me on that cutting it will give y the best fitment bash bar is good for if u drift and your mounting points are messed up but the oem I e is the best if you can hope that helps

Nikzilla · 12-25-2013, 08:09 PM

Quote:

Originally Posted by ahel13

Ya it slides on it but don't think it bolts on but don't quote me on that cutting it will give y the best fitment bash bar is good for if u drift and your mounting points are messed up but the oem I e is the best if you can hope that helps

Yeah thanks! This is exactly the answer I was looking for.

I'll try to find an OEM support.

ahel13 · 12-25-2013, 08:11 PM

No problem message Vatche on here that's his name he always has oem parts and I'm sure he will have one

Nikzilla · 12-25-2013, 08:34 PM

Quote:

Originally Posted by ahel13

No problem message Vatche on here that's his name he always has oem parts and I'm sure he will have one

Will do.

Thanks man!

240boi115 · 12-26-2013, 02:22 AM

not meaning to butt in but i have a spare bumper support lying around i don't need.. just saying....

Nikzilla · 12-26-2013, 02:24 AM

Quote:

Originally Posted by 240boi115

not meaning to butt in but i have a spare bumper support lying around i don't need.. just saying....

Oo how much?

240boi115 · 12-26-2013, 02:29 AM

30 bucks and its yours. its unmolested as as well.

Hisashiburi · 12-31-2013, 10:31 PM

Firstly, you need the reinforcement bar (or bumper support) as you call it. $30 from the member above seems reasonable as long as it hasn't been cut.

If you wish to retain your front mount intercooler you will likely need to cut a section out of the reinforcement bar.

You will also need the large bolts which bolt the reo to the chassis.

Make sure that for where the front bar bolts onto the front guards you don't just have individual bolts; I'm not sure of the proper name for it but basically there is a strip which has studs in it, then you put that inside the guard to attach the front bar and tighten up the nuts on the front bar side. Hard to explain but if you don't have this your front bar won't be perfectly attached to the guards.

Lastly, because you have cut the front bar for the front mount intercooler, the bottom will always sag because you will be missing the section of plastic that bolts to the radiator support under the car and provides further rigidity.

Nikzilla · 01-01-2014, 12:29 AM

Quote:

Originally Posted by Hisashiburi

Firstly, you need the reinforcement bar (or bumper support) as you call it. $30 from the member above seems reasonable as long as it hasn't been cut.

If you wish to retain your front mount intercooler you will likely need to cut a section out of the reinforcement bar.

You will also need the large bolts which bolt the reo to the chassis.

Make sure that for where the front bar bolts onto the front guards you don't just have individual bolts; I'm not sure of the proper name for it but basically there is a strip which has studs in it, then you put that inside the guard to attach the front bar and tighten up the nuts on the front bar side. Hard to explain but if you don't have this your front bar won't be perfectly attached to the guards.

Lastly, because you have cut the front bar for the front mount intercooler, the bottom will always sag because you will be missing the section of plastic that bolts to the radiator support under the car and provides further rigidity.

Thanks for the reply!

I already got the bumper support from that guy (cool dude).

Do you know what size bolts I need to mount the support?

Also, when you mention guards, what are you reffering to?

And lastly, would it be possible to fabricate my own support at the bottom to help support it from the radiator?

12-25-2013, 04:57 PM	#1
Nikzilla Zilvia Member Join Date: Jun 2013 Location: Los Angeles Age: 26 Posts: 291 Trader Rating: (0) Feedback Score: 0 reviews	Why does my bumper sag? I bought this car a couple of months ago, and now she's my project. I have pretty bad bumper sag, and it bothers me. I wanna fix it right now since I have the car under a knife and I'm waiting for parts, so I've got free time. This car is a 1990, so it was originally a pignose bumper that was swapped by the previous owner (hence the color mismatch). Can anyone tell me what's causing this? Any help would be much appreciated, otherwise I'll just try to make my own support brackets.

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12-25-2013, 06:01 PM	#2
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	Could of been in an accident even a small one can cause it to move. Make sure every bolt is in and no zip ties. And you got pig nose fenders on a chuki bumper are my thoughts

12-25-2013, 06:06 PM	#4
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	The pig nose has no holes but chuki does for the bumper extensions but other than that there the same. Make sure all the bolts from the fender to the bumper are tight pull the bumper towards the fenders when titening so u don break ur fenders haha

12-25-2013, 06:09 PM	#6
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	Make sure the bumper support is in along with foam.

12-25-2013, 06:10 PM	#8
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	U can use the stock bumper support and cut it but most make a bash bar or don't run one

12-25-2013, 06:19 PM	#10
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	Ya with a front mount the support has to be cut out or make a support

12-25-2013, 08:06 PM	#12
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	Ya it slides on it but don't think it bolts on but don't quote me on that cutting it will give y the best fitment bash bar is good for if u drift and your mounting points are messed up but the oem I e is the best if you can hope that helps

12-25-2013, 08:11 PM	#14
ahel13 Leaky Injector Join Date: Nov 2011 Location: oceanside Posts: 113 Trader Rating: (2) Feedback Score: 2 reviews	No problem message Vatche on here that's his name he always has oem parts and I'm sure he will have one

12-31-2013, 10:31 PM	#19
Hisashiburi Join Date: Dec 2013 Location: On the flipside Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Firstly, you need the reinforcement bar (or bumper support) as you call it. $30 from the member above seems reasonable as long as it hasn't been cut. If you wish to retain your front mount intercooler you will likely need to cut a section out of the reinforcement bar. You will also need the large bolts which bolt the reo to the chassis. Make sure that for where the front bar bolts onto the front guards you don't just have individual bolts; I'm not sure of the proper name for it but basically there is a strip which has studs in it, then you put that inside the guard to attach the front bar and tighten up the nuts on the front bar side. Hard to explain but if you don't have this your front bar won't be perfectly attached to the guards. Lastly, because you have cut the front bar for the front mount intercooler, the bottom will always sag because you will be missing the section of plastic that bolts to the radiator support under the car and provides further rigidity.