403_r32 Posted July 23, 2007 Share Posted July 23, 2007 (edited) Taken from s2ki.com forums. (Yes, there are Honda pictures in here) *disclaimer* I take no responsibility if you mess up! I wanted a vented hood for three reasons; 1. To let heat (from header, engine, & radiator) escape from engine bay 2. To get cooler air into intake 3. To use the low pressure area above the hood to help extract air from under the front of the car thereby increasing velocity under the splitter and floor of the nose which should increase downforce. Why not buy a carbon fiber vented hood? The affordable knock-off carbon hoods are heavier and less stiff than the stock aluminum hood. I believe the stock hood weighs 14 pounds. The high quality "authentic" hoods (cwest, mugen etc...) cost a bundle and still need to be painted unless you are going for the carbon look. Some if not all composite hoods require hood pins for high speed use. Oh yeah, and I'm cheap. I planned on venting both sides but ran out of time and decided I like the look of just one side. Still debating. Here's my solution: How to build your own: Please use appropriate safety equipment and don't screw up. Yes, you are about to cut holes in a perfectly good hood so be prepared. Remove the hood and the hood liner and support it upside down on some padded saw horses. Make templates by laying paper over each support hole you plan to cut and trace the edge (use the pencil rubbing technique). Use the templates to cut out some perforated aluminum (clean and paint the both sides of the aluminum). http://www.mcmaster.com/ Use a 3/8" spacer against the hood support edges to draw the hole shape. I left a 3/8" lip for mounting purposes. Using a UniBit, drill a hole in each corner. Using an air saw, cut out the shape from the under side - leave a small gap to finish off with sanding. Use a sanding drum on a die grinder to smooth to shape. I tried using a sandpaper wheel on an angle grinder but it gets too hot and the paints starts to peel back. Once the shape is close, flip the hood over and apply masking tape on the top side all around the new openings. Use wet dry sandpaper to smooth the cut and feather the paint. The masking tape is there so if you slip with the sandpaper, you won't scratch up your hood. Lay 3M double stick tape used for moldings/body work on your 3/8" lip and trim with a razor to fit just inside the cut out (find it at automotive body shops). Use a fine paint brush and carefully paint the exposed edge with factory touch up paint. Install perforated aluminum and your done. I used some small sheet metal clips to hold the perforated aluminum in place just in case the double stick tape failed due to engine heat but I ran a full track day without them and everything was fine. Edited July 24, 2007 by 403_r32 Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/ Share on other sites More sharing options...
Trust33 Posted July 24, 2007 Share Posted July 24, 2007 looks good.but wouldnt you have to respray the bonnet to get it looking that professional on the cut edges? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3247611 Share on other sites More sharing options...
unarmed_skyline Posted July 24, 2007 Share Posted July 24, 2007 that looks tough as, would look way better with bost sides done but then agian may be too busy, ohh btw if your in melb and ever need any geniune parts for your s2000 pm me, i work in spare parts at a Honda dealer, i dont mind helping out a fellow member, even if oyur not in melb and think your getting ripped pm me ill let you know. cheers jarrod Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3247727 Share on other sites More sharing options...
Hungryhippo Posted July 24, 2007 Share Posted July 24, 2007 Looks really good. Did it help at all with temperatures? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3247960 Share on other sites More sharing options...
DjeMz Posted July 25, 2007 Share Posted July 25, 2007 Im going to try it today or tom *fingers crossed* Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3248400 Share on other sites More sharing options...
midnight Posted July 25, 2007 Share Posted July 25, 2007 nice, still legal too Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3250271 Share on other sites More sharing options...
403_r32 Posted July 26, 2007 Author Share Posted July 26, 2007 Well, I guess you'd really have to have steady hands if you dont want to respray the bonnet, nevertheless make a mistake! Getting a straight cut is probably the most difficult part. Sanding/feathering down the edges may be a bit tedious, but as long as you take off a fairly even amount and the edge retains an even bevel, the touch up paint would suffice. The s2k hood was done as I said, just touched up around the edges, and as far as I'm concerned it looks pretty damn good As long as you have a straight cut to begin with, and have it all masked off properly there shouldnt be any problems! Getting more air to run around the iron torpedo of a block will always help lower temperatures. Every little thing helps. Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3251238 Share on other sites More sharing options...
Ant97GTR Posted July 26, 2007 Share Posted July 26, 2007 nice, still legal too Wrong...refer original thread: http://www.skylinesaustralia.com/forums/in...howtopic=177821 Unless someone can provide documentation to show otherwise this is the case.... Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3251831 Share on other sites More sharing options...
403_r32 Posted July 28, 2007 Author Share Posted July 28, 2007 How many of the users here have 100% legal cars anyways? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3255181 Share on other sites More sharing options...
seriesII Posted August 20, 2007 Share Posted August 20, 2007 nice, good mod, and looks like it saves alot... wish it was street legil .. dont want more attention.. ill do this for sure when my car goes track...thanx for the diy.. Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3299964 Share on other sites More sharing options...
abu Posted August 21, 2007 Share Posted August 21, 2007 (edited) Very nice work man, looks neat as! Very good write up. Edited February 6, 2008 by abu Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3300197 Share on other sites More sharing options...
dori34 Posted August 21, 2007 Share Posted August 21, 2007 looks nice and simple and very effective Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3301344 Share on other sites More sharing options...
Pauly33GTS-t Posted August 28, 2007 Share Posted August 28, 2007 I think it is legal? you dont cut the reinforcements underneath it... Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3313091 Share on other sites More sharing options...
Factory 5 Posted August 29, 2007 Share Posted August 29, 2007 im thinking of doing this or something similar on my spare bonnet.... (trac and drag/hillclibs onyl bonnet) Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3315778 Share on other sites More sharing options...
sotck4door Posted August 31, 2007 Share Posted August 31, 2007 Nice work man....Love to see the idea like this~~~ Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3320530 Share on other sites More sharing options...
4drftn Posted August 31, 2007 Share Posted August 31, 2007 Im going to try it today or tom*fingers crossed* how did you go? i might have a go Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3320547 Share on other sites More sharing options...
4drftn Posted January 20, 2008 Share Posted January 20, 2008 anyone got any pictures of the hood hack to an r33? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3592344 Share on other sites More sharing options...
Black Ninja Posted January 30, 2008 Share Posted January 30, 2008 what happen if it's raining ? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3612091 Share on other sites More sharing options...
JDM032 Posted February 4, 2008 Share Posted February 4, 2008 u get free water spray on ur intake piping. lol wouldnt be too much of a problem until u stop. then u need an umbrella for ur bonnet Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3623739 Share on other sites More sharing options...
DjeMz Posted February 9, 2008 Share Posted February 9, 2008 has any1 done it for r32 or r33 yet? Link to comment https://www.sau.com.au/forums/topic/177820-diy-the-hood-hack/#findComment-3634833 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now