Paint & Body guys help

[gsracer]

Ok im taking a break from the engine work to finish the body and need some help guys.

I have all the metal parts ready to go its the fiberglass fenders and 1/4s that i have a few questions on.

1. I have some low spots in the fiberglass 1/4s and fenders that wont block out, can i apply a thin coat of regular body filler on this.

2. The rear 1/4s are panel bonded to the car, the rivet holes are empty but i would like to cover them for a cleaner look, any recomendations.

3. i got hair line stress cracks in the fenders in a lot of places whats the best way to remedy this .

4. In some places the origin parts look like theyve gone thru the gel coat but not to the fiber per say its just a different color, can i leave it like this and prime or is there another process.

5. whats the best primer to use on the fiber glass. Epoxy?


TIA

[punxva]

for number one, yes but i'd use glaze not filler on it if it's not going to be too thick.

and for primer you can use what ever primer your using on the metal as well. we usually use 2k primer at work.

[gsracer]

so i just apply filler over the fiberglass just like if i where doing sheet metal, i figured 2k would be good enough but a few people recomended epoxy which is why i asked.

So anyone have thoughts on 2 , 3 , and 4 ?

[silpena]

1.yes a nice skim coat of glaze should do the trick. Just light skim coats.
2. I would use a nice short strand fiber glass body filler or maybe fiber glass resin to cover up the rivets. This will hold up better than body filler. I would recommend you redo the who molding with long strand fiber glass filler since its stronger and holds up better and wont crack as fast. If u can use expanding foam inside between the new panels to the old panels to reduce flex and stress that would cuase the rivets to pop off or make stress cracks.
3. are the hair line cracks in the paint? are they not painted? hair line cracks in the gel coat?
1. if paint then sand it completely off with 180 grit and quickly apply an expoxy coat or regualr primer surfacer if your gonna paint it soon.
2. If its in the gel coat you either sand it off then re gel coat(pain in the ass) or you can try to salvage it by using resin or a super short strand fiber glass body filler. There is stuff that sands like regualr body filler and is real strong. ask more if u like.
3. if its the fiber glass then i would reinforce the back end with resin and make sure to force it into the cracks to give it structural strength again.
3. For the fiber glass fenders use a either a high build primer surfacer or a poly ester primer filler(common on fiber glass cars and bodys). Its super thick and helps in blocking the car to show status. AS for the metal either a 2k expoxy after metal prepping if the metal has been exposed outside for a long time or a regular 2k primer or primer surfacer.

hope that kinda helps.

[gsracer]

1.yes a nice skim coat of glaze should do the trick. Just light skim coats.
2. I would use a nice short strand fiber glass body filler or maybe fiber glass resin to cover up the rivets. This will hold up better than body filler. I would recommend you redo the who molding with long strand fiber glass filler since its stronger and holds up better and wont crack as fast. If u can use expanding foam inside between the new panels to the old panels to reduce flex and stress that would cuase the rivets to pop off or make stress cracks.
3. are the hair line cracks in the paint? are they not painted? hair line cracks in the gel coat?
1. if paint then sand it completely off with 180 grit and quickly apply an expoxy coat or regualr primer surfacer if your gonna paint it soon.
2. If its in the gel coat you either sand it off then re gel coat(pain in the ass) or you can try to salvage it by using resin or a super short strand fiber glass body filler. There is stuff that sands like regualr body filler and is real strong. ask more if u like.
3. if its the fiber glass then i would reinforce the back end with resin and make sure to force it into the cracks to give it structural strength again.
3. For the fiber glass fenders use a either a high build primer surfacer or a poly ester primer filler(common on fiber glass cars and bodys). Its super thick and helps in blocking the car to show status. AS for the metal either a 2k expoxy after metal prepping if the metal has been exposed outside for a long time or a regular 2k primer or primer surfacer.

hope that kinda helps.


Exactly the kind of tech iwas looking for

Im not molding the 1/4's, they are glued to the car with 3m panel bond so the rivets are pretty much pointless. I glued them with 3 beads of panel bond starting 1/4 inch from the edge of the panel and spaced about 1/3 of an inch from each other. As for the panel, im fine with the seam i just want to cover up the rivet holes so its one smooth panel bonded to the 1/4s but your info helps here anyway

and they are not painted the hair line cracks are in the front fenders and in what appears to be the gelcoat. and hasnt gone thru to the glass, ill try to get some pics up in an hour or so.

Yea the metal parts of the car have already been primed with nason 2k primer, but i was told by the body shop the fiber glass should be primed with epoxy. I have a half galon of nason fulpoxy but i had heard it was kind of a pain in the ass to use.

[silpena]

ok the i like your style. Good on the bonding agent ur using. Thats what i would have done. U can salvage the front fenders with fiber glass resisn or short strand fiber glass will would work. Evercoat has a product call fiber tech. Its strong and sands easily. Costly but good stuff. If you dont fix it now it will show up later in the primer and the paint eventually.

Dont see why they told you to use the epoxy.. i guess if you have then use it. Its not a paint to use. Just like any primer. Just fallow the manufactures instructions and it should be easy but i still would recommend a polyester primer filler. Its basically polyester glaze in a sprayable form. Evercoat has a nice priced one. I pay around 65 for a whole gallon. You would only need like 2 quarts and you mix it with MEK( same stuff u mix fiber glass resin) so you gotta be more care full with the mxing ratios.

[rb25_s13*CHUKI]

a hammer and zipties

[dori_sil8t]

Ok im taking a break from the engine work to finish the body and need some help guys.

I have all the metal parts ready to go its the fiberglass fenders and 1/4s that i have a few questions on.

1. I have some low spots in the fiberglass 1/4s and fenders that wont block out, can i apply a thin coat of regular body filler on this.

2. The rear 1/4s are panel bonded to the car, the rivet holes are empty but i would like to cover them for a cleaner look, any recomendations.

3. i got hair line stress cracks in the fenders in a lot of places whats the best way to remedy this .

4. In some places the origin parts look like theyve gone thru the gel coat but not to the fiber per say its just a different color, can i leave it like this and prime or is there another process.

5. whats the best primer to use on the fiber glass. Epoxy?


TIA
1. filler
2.mmm not worth the stress
3.id lay some cloth on the back and then hit it with the filler

[gsracer]

heres the best pictures i can get of the stress cracks and the parts that look like they are going thru the gelcoat.

The stress cracks are pretty clear , now the part that is going thru the gel coat is how they came from the origin lab craptory, i mean factory. It looks like just pure resin puddled in the mold.





http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/100_0777.jpg

[silpena]

wow what a shitty product from orgin i didnt know they put out crap like that. I thought they had better craftsmenship. Just sand the whole area and feather it out untill the cracking stops. Theres no need to do the whole thing. Either get resin front and back and make sure to squeeze into the cracks or use a very lightwieght/short strand fiber glass body filler to cover them up then regualr glaze to skim it to give you a smooth surface to paint on. Doesnt look too bad from the pic. Ive delt with fiber glass cars that were even more crappy and had no gel coat or anything.

as long as the fiber glass themselves and resin isnt cracking and falling apart you should be ok. Gel coats are made to be a protective shell for shipping/handling before you prep/paint and add more durability agains chips/scratches. Too much gel coat or resin can be bad in the long run.

p.s. you seem to have a big gap... test fitting still?

[gsracer]

Thats the best it will ever get, i am so disappointed with the origin front fenders ive been contemplating scrapping them and going back to metal front fenders. The rears fit decent however. Its just the fronts that suck hard. If it wasnt for the 275s up front i would really do it.

Heres some pics of the car

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6673.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6674.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6675.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6668.jpg

[kikoeltravieso]

great info guys im learning a lot.:fruit:

[silpena]

have you tried slotting the mounting holes and just use shims where you need them to fit?

[gsracer]

yea they are already spaced out quite far in those pics. The hood line matches and on the door gap i have about a 1/4 inch, the only real problem that bothers me the most is the front fenders are sunk in relative to the door like if your standing in front of the cornerlight looking towards the back of the car, the fenders is sort of pushed in (sunk) towards the car, only on the back where it meets the door line the rest is ok but whatever, ill probably break them anyway.

Unrelated question but ive done alot of painting never a whole car though, mostly engine bays side skirts bumpers fenders etc. I have 2 sprayable gallons of paint i bought for this project, over kill i know, however since im using the same batch i could in theory anyway paint the car in pieces, ie doors , fenders, rear clip, bumpers etc. The color is a grey metallic.

[silpena]

your theory is correct. Just make sure you have the pressure/fan pattern the same and use the same gun. 2 gallons is an over kill. is it single stage or 2 stage? either way it is. If its 2 stage or 8:1:4/4:1/1:1/2:1 or whatever then u would have almost 3-5 gallons of sprayable paint gallons which enough to paint a semi.

[ross.cottrill]

sorry man if you break that work up in stages there is a good chance that it wont match due to changes in ambient temp and panel temp.if you need to break it down you should do something like this.do all you flat surfaces-hood and front bumper,roof,trunk lid.next do the whole drivers side and then the passenger side.i think it will come out a little better in terms of matchin alittle better.

[gsracer]

your theory is correct. Just make sure you have the pressure/fan pattern the same and use the same gun. 2 gallons is an over kill. is it single stage or 2 stage? either way it is. If its 2 stage or 8:1:4/4:1/1:1/2:1 or whatever then u would have almost 3-5 gallons of sprayable paint gallons which enough to paint a semi.


Its dupont chroma system bc/cc so I actually have one gallon of paint which when reduced 1:1 is 2 sprayable gallons, i wanted to have extra lol.
Thanks again for the help i really appreciate it .

Anyway I already did the engine bay and complete interior of the car heres pics



Before


http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6132.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6280.jpg


After


http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6300-1.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6411.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6295.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6293.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6313.jpg

http://img.photobucket.com/albums/v344/gsracer/Projectbacktobasics/IMG_6406.jpg

[silpena]

nice! u have alot of paint! even enough to make mistakes(not saying u should lol)

[ross.cottrill]

yeah man looks like a great color as well!!!