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Thread: How to bond inner hood with outer hood skin

  1. #1
    Senior Member koenigtr's Avatar
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    How to bond inner hood with outer hood skin

    Hi,

    I need help in bonding the hood inner liner to the hood outers skin. What is the best method of bonding?
    Thanks,
    AK

  2. #2
    Senior Member ITALIANKNIGHTRIDER's Avatar
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    Re: How to bond inner hood with outer hood skin

    Cab-O-Sil ( mixture of chopped glass an talc power ) add resin to make a paste , put your metal or studs in the part, add hardner to the amount you will be using ,then spread the creamy paste along the edges you are bonding an then clamp it together , apply even pressure all the way around the part so there are no hi an low areas with your clamps ,so it will close even an not require more work

    some people use strips of matt saturated in resin an hardener an clamp it together

    http://www.fibreglast.com/category.p...rc=HelpfulProd
    In the USA if you pay a company / person to start a plug, then it,s your plug and work ,it is not theirs to sell or trade !!

  3. #3
    Senior Member koenigtr's Avatar
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    Re: How to bond inner hood with outer hood skin

    Thanks for the info. where can I buy the Cab-o-Sil???
    Andrew

  4. #4
    Moderator FunnyWheels's Avatar
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    Re: How to bond inner hood with outer hood skin

    Quote Originally Posted by koenigtr
    Hi,

    I need help in bonding the hood inner liner to the hood outers skin. What is the best method of bonding?
    Thanks,
    AK
    Attached Images Attached Images   
    If you're not confused, you're not paying attention.

  5. #5
    Moderator FunnyWheels's Avatar
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    Re: How to bond inner hood with outer hood skin

    Quote Originally Posted by koenigtr
    Hi,

    I need help in bonding the hood inner liner to the hood outers skin. What is the best method of bonding?
    Thanks,
    AK
    Attached Images Attached Images    
    If you're not confused, you're not paying attention.

  6. #6
    Senior Member koenigtr's Avatar
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    Re: How to bond inner hood with outer hood skin

    Funnywheel,

    What bonding agent are you using? I am familiar with bondo or marglass - Can I bond it with bondo or marglass? Please advise where can I buy the bonding agent?
    Thanks,
    Andrew

  7. #7
    Moderator FunnyWheels's Avatar
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    Re: How to bond inner hood with outer hood skin

    Andrew, I got the product from John Watson.

    He goes by 360-COR on this site. It was a product used to put boat hulls together during the manufacturing process. I have never had any problems with the parts delaminating.

    Dave
    If you're not confused, you're not paying attention.

  8. #8
    Senior Member DeLorean00's Avatar
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    Re: How to bond inner hood with outer hood skin

    Heres some pictures of how we did it. But remember support the center from inside the trunk area if you put weight in the center other wise you will get a flat spot




  9. #9
    Senior Member ITALIANKNIGHTRIDER's Avatar
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    Re: How to bond inner hood with outer hood skin

    In the USA if you pay a company / person to start a plug, then it,s your plug and work ,it is not theirs to sell or trade !!

  10. #10

    Re: How to bond inner hood with outer hood skin

    I started a write up a while ago, but never finished. Just remember to get the fenders, front bumper aligned before you bond the hood. If you get frustrated or rush it, you are going to spend a lot of time grinding the hood hinge to get things right. And that hood hinge is really tuff stuff.




    7. Mounting AD 355 body panels
    7.1 Place rear clip on car. (Use sheet metal screws to attach)
    7.1.1 Align A-Pillars, and the the rear clip to the inner part of the doors.
    7.1.2 Align B-Pillar and rear door area. The rear clip should (not must) be flush around the door area.
    7.1.3 Find rocker panels, rear bumper and rear wheels. Get a couple of friends to hold parts. Align the rear bumper to the wheel arch of the rear clip. The curve in the bumper should align with the curve of the rear clip and have two people hold the bumper in place. Loosely hold the rocker panels in place. Drill out the holes in the rear clip for the rocker panels. Now take the rear wheel and make sure that it does not hit the rear bumper or running board. Put sheet metal screws into lower part of rear clip to door to keep everything aligned. Put sheet metal screws at the end of the A-Pillars. The checking of the rear tires at this step will alleviate the wheels hitting either the running boards or rear bumper in the future.

    7.2 Install the doors. Three bolts in the front and two in the rear. (loose)

    7.3 Install the fenders. The four screws on the top where the Fiero fenders bolted in. At this step, you should trust the holes in the fender as being correct. (loose)

    7.3 Install the rocker panels. The front of the rocker panel will align with the fender. Drill a 1/4" hole though the bottom of the fender, though the running board and install a nut and bolt. (loose)

    7.4 Build adjustable lower fender bracket. This bracket will bolt the fender and rocker to the Fiero. This bracket should be very stiff (use angle iron) and have vertical and horizontal adjustments. This bracket will have to be angled forward about 20 degrees to not interfere with the door opening.

    7.5 Align rear clip to doors to fenders with 3/16 to 1/4" spacing. Take your time here!!!! (large paint sticks are the perfect size for this. Get lots)
    7.5.1 Make sure the doors open without hitting the fender. You might need to trim away the inner lip of the fender to get the doors to open. Do not trim over the edge or any gel coat. (This will take time, do not rush and get it right the first time.)
    7.5.2 The holes on the fenders are approximate. Try using them first and make little etches with a Dermal if you have to.

    7.6 Install the front bumper mount bar

    7.7 Install lower hood panel
    7.7.1 Reuse the Fiero hood hinge and bolts. Bolt the hinge to the hood (DO NOT OVER TIGHTEN) and then to the bumper mount bar.
    7.7.2 Reuse the Fiero latch from the Fiero hood. You might need to add a spacer between the hood and the latch.
    7.7.3 Align the hinge to open and shut easily. Having two people do this is a must. There is nothing worst than trying to open the hood by yourself, having it twist, and hearing that fiberglass cracking sound.

    7.8 Place the upper hood panel on the car

    7.9 Install front bumper to fenders
    7.9.1 Use squeeze clamps on the front bumper edges to the fenders
    7.9.2 Lift the front of the bumper and drill from the back though the mount bar though the bumper. Install bolts to hold the front of bumper

    7.10 Align the upper hood panel edges to 3/16" to 1/4"
    7.10.1 Use two sheet metal screws to hold the hood panels together. The screws should be away from the edges and are only for alignment.

    7.11 Go back and double check all of the spacing
    7.11.1 Check rear clip to doors to fenders and running boards to hood to front bumper to header bar to hood <--- In this order.
    Note: This is critical step. Do not get frustrated and rush it. Fixing any alignment issues in the future will take many hours. What could be done here in a hour will take 8 hours after the hood is bonded.

    7.12 Repeat 7.11 again!!!

    7.13 Bond upper hood panel to lower hood panel
    7.13.1 Use liquid nails on bumps near the middle of the lower hood.
    7.13.2 Mix up a lot of slow cure fiberglass resin with glass in it.
    7.13.3 We used quick set Kitty-hair. The good news is that it is cheep and easy to buy. The bad news is that you have less than three minutes to mix, spread on hood and apply. It worked ok, but was not the best solution.

    7.14 Bonding the rear end
    7.14.1 Place MR2 rear window into rear clip. Do not glue the rear window. Fiberglass is flexible and if you glue the rear panel to the rear clip with out the window, the window might not fit in the future. This is the imperial testing that John has done. Please do not argue, just put the window in and make sure that the window stays in place till you are done with the rear end.
    7.14.1.1 There are two tabs on the rear window. Etch the rear clip with the Dermal until the window fits. Do not try to cut or shave the tempered rear window. It will shatter.

    7.14.2 Install the outer tail lights to the inner panel.
    7.14.2.1 Drill the holes in the inner panel a little larger than the bolts of the tail lights. You will need to adjust the lights later.

    7.14.3 Trim panels to contour of rear clip

    7.14.4 Use sheet metal screw to Y or V area to hold inner panel

    7.14.5 Align outer panel (or Challenge Grill)
    7.14.5.1 The lights should be centered to the rear panel and stick out a bit.

    7.14.6 Spot Kitty-hair bondo the inner panel to the rear clip
    7.14.6.1 Make sure to remove the outer panel and tail lights before you spot bond the inner panel

    7.14.7 Install the outer tail lights and check the alignment to the outer panel.

    7.14.8 Double check the alignment between the inner and outer panels with the tail lights installed again.

    7.14.9 Remove the outer panel and tail lights

    7.14.10 Fiberglass the rear clip to the inner panel. Three or four layers should be enough.

    7.14.11 Install all tail lights

    7.14.12 Install and outer panel

    7.14.13 Align panels and tail lights again.

    7.14.14 Build brackets to hold the rear clip
    7.14.14.1 Build brackets from the rear bumper bolt to the car. (build to both bolts if you want.)
    7.14.14.2 Use an angle bracket between the rear clip and the Fiero trunk.
    7.14.14.3 Install two bolts on each side of the inner deck lid area to the Fiero. A spacers of about 3/4" will be needed. Use 80s Toyota rubber hood bumpers over the heads of the bolts to align the deck lid level.

    This section needs more work
    7.15 Install the rear deck lid
    7.15.1 Install the 3000GT or eclipse rear deck hinges to the deck lid
    7.15.1.1 Epoxy a 3/4" x 3' square metal bar to deck lid
    7.15.1.2 Epoxy the hinges directly to the deck lid (not recommended)
    7.15.2 Install the hinges to the deck lid and then to the hinge plate. Make sure that the deck lid opens and shuts.
    7.15.3 Place the deck lid with the hinges and the hinge plate into the car and align the back of the deck lid to the back of the rear clip. Make sure the spoiler lips line up.
    7.15.4 Align the top of the deck lid to the top of the rear clip and the tail section to the back of the rear clip. It is very important to align the back "lip" area perfectly. Do not worry about the gap between the front of the deck lid to the area below the rear window. (unless it is too short.)
    7.15.5 Build two brackets from the bottom Fiero deck lib bolt to the hinge plate.
    7.15.6 Spot kitty hair the hinge plate to the rear clip from the inside of the car. It is a good idea to place paper over the engine or anywhere else you might drip kitty hair. It is also a good idea to make sure that the deck lid still opens and closes.
    7.15.6 After the kitty hair has dried, check the alignment again. Also check the open close action. If you are happy, then fiberglass with matt the hinge plate to the rear clip.
    7.15.7 Fill in the gap between the rear clip and the deck lid.
    7.15.7.1 Wrap the large paint sticks with plastic wrap and place them all around the deck lid.
    7.15.7.2 Make the gap 3/16" all the way around.
    7.15.7.3 Make sure paint sticks are on the deck lid with light pressure.
    7.15.7.3 Fill in with bondo or kitty hair from the rear clip to the paint sticks.
    7.15.7.4 Once dry, remove the paint sticks and sand the bondo till smooth.
    7.15.6 Latching down the deck lid.
    7.15.6.1 Install a metal bar between across the back to hold the Fiero bear claw.
    7.15.6.2 Install

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