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Bonnet Mods

wraith_skyline

By wraith_skyline,
in Fabrication

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wraith_skyline Proficient

wraith_skyline

Posted
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Hey guys, found a bonnet i really like but it is only for a 180, i can get the vent section seperately but is it worth chopping the guts out of my bonnet and replacing it or just keep shopping??

If anyone has done this or has any hints greatly appreciated

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Craved Grand Master

Craved

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Please be more specific in what you would like to do or this thread will be moved.

The fabrication section is for questions on how to make something, or showing the process and results of something you have made.

adding fibreglass sections to your existing steel bonnet can be done, as for trying to convert a 180 bonnet onto a skyline .. could be done but be very difficult.

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wraith_skyline Proficient

wraith_skyline

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Sorry, i can get the vent section from the 180 bonnet separate, am after advice or other words of wisdom on how to remove a section of my current bonnet skin and replace it with the vented section, or should i get a fibreglass bonnet and graft it to that? I have had experiance with fibreglass before making sub boxes and such and think it could be easier to work with just fibreglass as apposed to fibre and metal

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Adz2332 Grand Master

Adz2332

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Sorry, i can get the vent section from the 180 bonnet separate, am after advice or other words of wisdom on how to remove a section of my current bonnet skin and replace it with the vented section, or should i get a fibreglass bonnet and graft it to that? I have had experiance with fibreglass before making sub boxes and such and think it could be easier to work with just fibreglass as apposed to fibre and metal

isnt doing that defectable?

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wraith_skyline Proficient

wraith_skyline

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As far as i am aware you can change the skin as long as you dont modify the bracing underneath, or if you do it has to retain the strenth by the addition of more bracing,

But then again fitting a cf bonnet is defectable due to pedestrian hazards from shattering so i am not sure if they are going to go the same way with fibreglass

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Craved Grand Master

Craved

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By the way i was qouted about $500 to get a combat vent moulded into my metal bonnet wiht out paint.

Can be dont at home too if u know bit. basically cut hole, rivet vent then mould wiht fibre glass, sand prime and paint.

thats pretty much all it would take, however i would personally have the vent tabs UNDER the skin of teh bonnet then after taking the underside of the overlap on the skin sanded back to metal, fibreglass the 2 pieces together . FB adheres to bar metal without issue. then once secure you just use a very small amount of bog/putty where the 2 pieces meet on the top of the bonnet to mould into one fluid piece ..

This way there is no Rise in the bonnets lines until the actual vent comes into place.. stops it lookig like it was just stuck on.

post some pics of the vents you want and we may be able to provide more specific ideas on this moulding process.

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wraith_skyline Proficient

wraith_skyline

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Yeah was thinking the same thing, if its not 3 bits will make it into 3, gills definately need to go further back to match the 33, and prolly angled a bit more to match the natural line of the original bonnet, might move the main one back a bit too

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  • 2 months later...
grandmasterb Grand Master

grandmasterb

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The main thing when doing it is making sure the cuts are pretty much perfect otherwise its a pain in the arse to correct!!!

I found the one that i did it was easier to undercut the section you wanted first then go from there, all up with glass its a time consuming process getting it ridgy didge hence what people are quoted to have it done for them.

If it was my bonnet then i would recess the side vents further back and only get them with 3 intakes on the side and a single vent in the center, buts that me :P

Oh yeah and while i remember it make sure why you are laying the glass do it in as many stages as you can without going overboard and you shouldn't have to sand back as much to get a smoother finish. The other thing i did with mine was tint the coat to give me a better outline of where i was working and also to give it that "molded" look as well :whistling:

GMB

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