USDM bumper reinforcement install under JDM front
#1
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2001
Location: HI
Posts: 918
Likes: 0
Received 0 Likes
on
0 Posts
USDM bumper reinforcement install under JDM front
My ITR came with a JDM front which was both good and bad. It was good because I prefer the look compared to the USDM one. But it was bad because I was not able to compete in a stock auto-x class and my car was not up to US crash standards. I am sure that most people don't care to do this modification but I want to show that it is not at all hard to do and only requires a drill, utility knife, and simple hand tools.
The USDM bumper reinforcement bolts on directly on to the JDM radiator core support.
Thanks to Tekkaboy for reposting the pics.
1. Cut off little tab from USDM plastic gusset to clear JDM bumper cover. Repeat on other side.
2. Cut off area shown. Repeat other side.
3. Install bumper cover and check for interference. Adjust if necessary.
4. Drill out spot welds from JDM upper bumper support to separate mounts from support.
5.Mount the USDM foam absorber on to the USDM bumper reinforcement. You will notice that the foam protrudes above the USDM bumper reinforcement by approx 0.25". You will need to cut this off. Draw a line on the USDM foam absorber along the top edge of the USDM bumper reinforcement. Remove the foam absorber from the USDM bumper reinforcement. Cut along the marked line. I used a bandsaw but a hacksaw or utility knife will work also. When you are finished, remount the USDM foam absorber on to the USDM bumper reinforcement. Use tape to help hold the USDM foam absorber on to the reinforcement bar.
6. Attach to JDM bumper cover and install over USDM bumper reinforcement.
If you look really close at the pics below, you can see the white of the bumper support in the upper corners of the front grille.
Below are some recent pics.
Q:Why drill out the upper jdm bumper support?
A: You drill out the JDM upper bumper support because the mounting brackets that attach it to the JDM bumper reinforcement are no longer used and also interfere with the USDM bumper reinforcement.
10/10/11: BUMPER COVER TO HEADLIGHT GAP
You may be having issues with lining up the bumper cover with the headlights because your bumper reinforcement is installed low. If you loosen the fasteners that attach the bumper reinforcement to the radiator core support, you can raise/lower the bumper reinforcement approximately 1/4"-3/8". Most people will have the bumper reinforcement in the low position because they would just hang the bumper reinforcement to the radiator core support. This also may be the reason why people have had to cut more material than I had to.
I also mentioned that the fender and bumper cover interface did not line up well. I later learned that there is a plastic insert that was missing on each fender. This piece helps align the bumper cover to the fender.
The bumper cover has held up for over 8 years of auto-x and several track days/time attacks without any readjustment. I never did tack weld the JDM bumper support to the bumper reinforcement.
2/10/15: I just put together a video that explains some of the modifications required to fit the USDM rebar under the JDM front.
The USDM bumper reinforcement bolts on directly on to the JDM radiator core support.
Thanks to Tekkaboy for reposting the pics.
1. Cut off little tab from USDM plastic gusset to clear JDM bumper cover. Repeat on other side.
2. Cut off area shown. Repeat other side.
3. Install bumper cover and check for interference. Adjust if necessary.
4. Drill out spot welds from JDM upper bumper support to separate mounts from support.
5.Mount the USDM foam absorber on to the USDM bumper reinforcement. You will notice that the foam protrudes above the USDM bumper reinforcement by approx 0.25". You will need to cut this off. Draw a line on the USDM foam absorber along the top edge of the USDM bumper reinforcement. Remove the foam absorber from the USDM bumper reinforcement. Cut along the marked line. I used a bandsaw but a hacksaw or utility knife will work also. When you are finished, remount the USDM foam absorber on to the USDM bumper reinforcement. Use tape to help hold the USDM foam absorber on to the reinforcement bar.
6. Attach to JDM bumper cover and install over USDM bumper reinforcement.
If you look really close at the pics below, you can see the white of the bumper support in the upper corners of the front grille.
Below are some recent pics.
Q:Why drill out the upper jdm bumper support?
A: You drill out the JDM upper bumper support because the mounting brackets that attach it to the JDM bumper reinforcement are no longer used and also interfere with the USDM bumper reinforcement.
10/10/11: BUMPER COVER TO HEADLIGHT GAP
You may be having issues with lining up the bumper cover with the headlights because your bumper reinforcement is installed low. If you loosen the fasteners that attach the bumper reinforcement to the radiator core support, you can raise/lower the bumper reinforcement approximately 1/4"-3/8". Most people will have the bumper reinforcement in the low position because they would just hang the bumper reinforcement to the radiator core support. This also may be the reason why people have had to cut more material than I had to.
I also mentioned that the fender and bumper cover interface did not line up well. I later learned that there is a plastic insert that was missing on each fender. This piece helps align the bumper cover to the fender.
The bumper cover has held up for over 8 years of auto-x and several track days/time attacks without any readjustment. I never did tack weld the JDM bumper support to the bumper reinforcement.
2/10/15: I just put together a video that explains some of the modifications required to fit the USDM rebar under the JDM front.
Last edited by markpaco; 02-11-2015 at 08:03 AM.
#3
Re: USDM bumper reinforcement install under JDM front (markpaco)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by markpaco »</TD></TR><TR><TD CLASS="quote">
</TD></TR></TABLE>
nice pic, stock suspension? very nice car btw!!
</TD></TR></TABLE>
nice pic, stock suspension? very nice car btw!!
#4
New User
Join Date: Aug 2001
Location: In the R we trust,, NJ, united states
Posts: 2,808
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (CS)
two things,
1. HOW THE HELL DID YOU FIGURE THAT OUT?
2. Good job, but where were you 9 months ago when i needed this!!
BTW how long did it take you?
1. HOW THE HELL DID YOU FIGURE THAT OUT?
2. Good job, but where were you 9 months ago when i needed this!!
BTW how long did it take you?
#6
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2001
Location: HI
Posts: 918
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (Nighthawk GS-R)
1. HOW THE HELL DID YOU FIGURE THAT OUT?
I got off my *** and quit searching the forums since not many people care to do this mod, located the parts (thanks steves98itr247), took it apart, analyzed the differences, and made the changes.
2. Good job, but where were you 9 months ago when i needed this!!
I've only had the car for 9 months so I was likely nowhere to be seen.
3. BTW how long did it take you?
About 3 hours total: 2 hrs of sitting/thinking/comparing, 0.5 hr installing/removing, and 0.5 hrs cutting and drilling. So I figure anyone can do this in an hour. A lot of people think that things are impossible/hard to do but if you break it down and ask your self; 'can I drill a hole? can I cut plastic?' Sure you can. A lot of the stuff that people do around here is very simple. Just do it! Oh, and buy a HELM!
I got off my *** and quit searching the forums since not many people care to do this mod, located the parts (thanks steves98itr247), took it apart, analyzed the differences, and made the changes.
2. Good job, but where were you 9 months ago when i needed this!!
I've only had the car for 9 months so I was likely nowhere to be seen.
3. BTW how long did it take you?
About 3 hours total: 2 hrs of sitting/thinking/comparing, 0.5 hr installing/removing, and 0.5 hrs cutting and drilling. So I figure anyone can do this in an hour. A lot of people think that things are impossible/hard to do but if you break it down and ask your self; 'can I drill a hole? can I cut plastic?' Sure you can. A lot of the stuff that people do around here is very simple. Just do it! Oh, and buy a HELM!
#7
Re: USDM bumper reinforcement install under JDM front (markpaco)
mark,
only part i dont seem to understand fully is the step 4 procedure...why drill out the upper jdm bumper support?
only part i dont seem to understand fully is the step 4 procedure...why drill out the upper jdm bumper support?
Trending Topics
#8
Honda-Tech Member
Join Date: Jul 2001
Location: City, State
Posts: 5,007
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (markpaco)
that was last week @ the port of seattle? did you run in the morning group or somethin? i musta missed your car.
looks good
looks good
#9
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2001
Location: HI
Posts: 918
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (Soup ****)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soup **** »</TD></TR><TR><TD CLASS="quote">mark,
only part i dont seem to understand fully is the step 4 procedure...why drill out the upper jdm bumper support?</TD></TR></TABLE>
You drill out the JDM upper bumper support because the mounting brackets that attach it to the JDM bumper reinforcement are no longer used and also interfere with the USDM bumper reinforcement.
only part i dont seem to understand fully is the step 4 procedure...why drill out the upper jdm bumper support?</TD></TR></TABLE>
You drill out the JDM upper bumper support because the mounting brackets that attach it to the JDM bumper reinforcement are no longer used and also interfere with the USDM bumper reinforcement.
#14
Global Moderator
Join Date: Jan 2000
Location: Yokohama, Japan
Posts: 11,470
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (ITR GURU)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR GURU »</TD></TR><TR><TD CLASS="quote">But none of the weightsaving ****** would want to do this. </TD></TR></TABLE>
Especially the weight saving ****** who never track their cars.
Especially the weight saving ****** who never track their cars.
#15
Member
Join Date: Apr 2002
Location: Formerly pdcdragon, CA, US
Posts: 3,416
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (markpaco)
ahh ic someone other than me is using their university provided webspace for car related tutorials n such.. heheh.. good job on the usdm tho.
#18
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Sep 2001
Location: HI
Posts: 918
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (DC2ITR)
I finally got a hold of a USDM bumper foam and installed it under the JDM bumper cover. You have to trim the top of the foam such that the top surface of the USDM rebar is flush with the bumper foam. The bumper foam sits about 1/2" higher than the top surface of the bumper rebar. Sorry I don't have any pics but it is pretty self explanatory. Now only if I could get my headlights DOT approved.
#19
Re: USDM bumper reinforcement install under JDM front (markpaco)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by markpaco »</TD></TR><TR><TD CLASS="quote">I finally got a hold of a USDM bumper foam and installed it under the JDM bumper cover. You have to trim the top of the foam such that the top surface of the USDM rebar is flush with the bumper foam. The bumper foam sits about 1/2" higher than the top surface of the bumper rebar. Sorry I don't have any pics but it is pretty self explanatory. Now only if I could get my headlights DOT approved.</TD></TR></TABLE>
is big brother coming down on you?
is big brother coming down on you?
#20
Junior Member
Join Date: Mar 2002
Location: POWERED by Tsinelas
Posts: 228
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (markpaco)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by markpaco »</TD></TR><TR><TD CLASS="quote">Now only if I could get my headlights DOT approved.</TD></TR></TABLE>
I feel the same way
Thanks for the great write-up!
I feel the same way
Thanks for the great write-up!
#21
Honda-Tech Member
Join Date: Jan 2002
Location: sixoneseven
Posts: 163
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (markpaco)
This is so good to know, my car just came out from the bodyshop and I'm gonna show them this pictures to see if it can be done in my R 2. Also since people don't know how to park I NEED my 5 mph enforsment to work. Thanks dude.
#24
Honda-Tech Member
Join Date: Mar 2004
Location: SkanKz Ca
Posts: 2,341
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (markpaco)
UHmm lol... http://students.washington.edu....html
#25
B*a*n*n*e*d
Join Date: Nov 2002
Location: cali, 760, usa
Posts: 3,581
Likes: 0
Received 0 Likes
on
0 Posts
Re: USDM bumper reinforcement install under JDM front (forcedfedITR)
:right click save as: btw. how much money would this save because im planning on doing this to my gsr, what parts to i still need to buy to complete the jdm front end? thanks and 2 2 u