Repairing A 400r Bar

[3340TH]

Well yesterday I took my skyline out of the driveway (of 3 to choose) that i normally take my very low vl out of (so thought id be fine). Went to take off, but my bumper was already resting on the ground. put a crack right through the bottom from front to back (ill get some pics up 2moro) and about 10mm up the front. doesn't look like a lot of damage, so just want to know how to go about fixing it.

One side is resting over the top of the other, do i cut it out, through a sheet over the gap and refill with fibreglass fill?

And with painting it, do u sand back the area b4 peforming the above option, and when dry how do you paint it? like with merging it to connect the paint! can it over lap and by how much etc.

Cheers

[cheez]

hey mate where u from?

if in melb shoot me a pm and ill give u a hand to repair. i work in the aircraft industry, but specialise in repairs of carbon fibre / fibreglass panels.

let me know if u need a hand

daniel

[Jordan]

Damn , you should see my bar! Ive had 3 years of damage build up on it

Cheez, come to Sydney and help fix mine!

[cheez]

hey im up in sydney occassionally at Boeing-Hawker DeHavilland's facility in Bankstown. Next time i come to syd ill pm u. im usually there for a week or 2 so ill have time to help out if i can.

[3340TH]

Nah im in central queensland. Here's the photo of the damage. I'd rather fix the damage then let it build up cuz i have only had the car 2 and a half months.

[cheez]

not really hard to fix that damage and prep it to be sprayed.

easiest way is to use a sander and firstly sand the areas shown in this picture, use and orbital and basically make a shallow groove where the crack is.

then coz the cracks at the front really would be a waste of time to fibreglass them, go to a car paint retailer like paint spot, and buy a 500g tub of car BOG. apply the bog of these sanded areas and a bit extra over the lip area and let it set. sand it back to blend in with bumper and done. if u make a mistake with the bog and sand too much dont stress, add some more on and sand again. to check if the sanding isnt visible, buy a can of white undercoat in a can and apply to the bog. if u cant see it, or can maybe just see it, job done for there.

on the other crack under the bar is where i would apply fibreglass. its more of a structural strengthened area that if not repaired well will re-surface. using a polyester resin (available and any fibreglass retailer), apply this to some 200 or 400 weight chop mat (again available from where u get your resin), about 3 layers of mat should do it, place the mat on some plastic and using a scotch brite pad (this part can be done b4 or after u apply the resin), and scuff up the area around the crack. i would also maybe hit it with the orbital again. lay the glass into the crack 1 layer at a time and once the pieces are in wet out the mat. by wetting out, i mean put extra resin on the area.

allow to dry and done. no need to do any more repair at the bottom. do note that the bottom repair should be about 50mm around the whole of the crack to stop further cracking.

if u have anymore questions let me know or feel free to give a call. 04230089477

cheers

daniel

[3340TH]

on the other crack under the bar is where i would apply fibreglass. its more of a structural strengthened area that if not repaired well will re-surface. using a polyester resin (available and any fibreglass retailer), apply this to some 200 or 400 weight chop mat (again available from where u get your resin), about 3 layers of mat should do it, place the mat on some plastic and using a scotch brite pad (this part can be done b4 or after u apply the resin), and scuff up the area around the crack. i would also maybe hit it with the orbital again. lay the glass into the crack 1 layer at a time and once the pieces are in wet out the mat. by wetting out, i mean put extra resin on the area.

Well i already have bog and polyester filler, but what is a chop mat?

And with the front am i only sanding the cracks or the whole area?

With underneath, one side has overlapped to the top of the other side, just bend it back in the way it cracked?

And placing these mats does it go inside the crack or on top inside? Not sure where ur saying to put them.

Thnx

[cheez]

chop mat is strands of fibreglass that is pressed together in no definite pattern.

sand only the cracks on the front but also a little around the area of the crack so the fibreglass sticks.

with the back just line it up again.

the mat goes on top of the crack on the groove u sand. fill the groove with about 3 layers of 200 grade or 2 or 400 grade mat. speak to a fibreglassing joint to see what the stuff looks like. they might even give u some. you'll only need like a 500x500mm square of it. this also goes behind the crack. a surface scuff with scotch brite pad is only needed on the back.

so just to clarify, place mat behind and infront of the crack, like it was bread and the crack was butter and ham, (sandwhich).

hope this helps