That really is not a hard fix but you need to understand fiberglass repair.
There are a ton of youtube vids on fiberglass repair. It does not need to be cobra or FFR specific. If you ask specific questions, I and a few others the are experienced would be happy to answer.

 

Lots of grinding is in your future. You need a wide transition over the cracks for repair strength.
FFR's are made with vinyl ester resin, best to stick with that.

You have not yet ground out the FFR seams, lots of info on forums on grinding / filling those.

Like Gordon said, Youtube is your friend here.

 

better this happened now rather than after body/paint.

 

Thanks all! Have been watching lots of youtube. I now have the fibreglast chopped strand mat tape, resin to start with, will then fill with 3M HSRF and then finish with with Evercoat short strand reinforced body filler. Sound correct?

 

Not entirely. You need to use multiple layers of chopped strand mat along with Vinylester Resin, not polyester or epoxy, since that's what is used on the FFR bodies (not wise to mix dissimilar materials). You should have no need for HSRF. Once you have it solid and shaped you can finish with Evercoat Rage Gold. Be sure all of the gelcoat is removed anywhere you will be applying mat and resin otherwise it will lift and peel.

Good luck!

Jeff

 

skip the 3m. The evercoat and 3m are pretty much identical. Use the resin and mat, then the evercoat, then lightweight body filler.

 

NO. Do not use HSRF . That repair is done by multiple layers of resin & mat

 

this.

That is why there is so much grinding, you have to layer the cloth / mat in the valley you create.

Keep the resin as lean as possible, pools or puddles, too much "shine" mean too rich, too much resin, that prevents the next layer from bonding.

more Youtube!

 

Be sure resin is of the no wax variety. This will help alot so do not have to sand between resin application and fiberglass. Duct tape on backside will help.

 

30% of that work is on the inside of the body. It must be feathered back and multiple layers of fiber and resin built up on the backside 1st. Then after the back is glassed, start on the front grinding into the new repair so both sides have new fiber and resin binding to each other