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View Full Version : Anyone know where to put hood pins?


whiteka24
01-13-2007, 03:17 AM
I am having a hard time wear to put my hood pins on my carbon fiber hood. If anyone has an idea please help!

yokotas13
01-13-2007, 03:37 AM
drill hole through rad support
put paint on top of pins
lower hood to top of pins so paint comes off
drill hole, install pins

ThatGuy
01-13-2007, 07:15 AM
Yeah, it's pretty simple. If you don't think you can do it, just take it to a shop. Seriously though, it's not hard at all.

LB.Motoring
01-13-2007, 11:44 AM
haha instead of paint, you can use lipstick. it comes off ez and will show you the exact spot. In bright red. :keke:

Jung918
01-13-2007, 11:47 AM
Many of us don't have lip stick laying around like you robby.

yokotas13
01-13-2007, 11:50 AM
i thought you did?

chmercer
01-13-2007, 11:50 AM
*trying to resist the urge to say that they go on the hood*

yokotas13
01-13-2007, 11:50 AM
i love your indirectness man lol

Jung918
01-13-2007, 11:54 AM
i thought you did?

Maybe I do. Maybe I don't. You won't know untill you come over.

Elky
01-13-2007, 12:00 PM
Or a bit of grease on it would work too. That is always handy when working on cars =D

vrooompssssht
01-13-2007, 01:49 PM
mount them to the valvecover

zaneithan
01-13-2007, 10:31 PM
yo i think they go in the hood

zaneithan
01-13-2007, 10:38 PM
lol and to whoever gave the neg rep...its called a joke, do you know what those are?

g6civcx
01-14-2007, 05:47 AM
Depending upon the equipment you have, some cars already have holes already drilled into the radiator support. You can just enlarge them to accomodate your pins.

It will take a lot of adjustment the first time you do it. After you cut the hood, the hood surface sits at an angle so it will not line up perfectly the first time. Take a hammer and lightly tap the pins. Lower the hood and adjust. Repeat.

Just take your time and adjust it to the point you're comfortable with it. I like mine to sit really tight so it takes a bit of effort to latch the pins, but I don't have problems with it.

jrmiller84
01-14-2007, 03:26 PM
I may have to do this soon, my hood likes to bounce about 1cm up and down during high speeds. That normal for you guys using the normal latch? Also, is there anything to worry about with carbon fiber? Any way to "seal" the fibers near the hole in the hood so they don't degrade and mess up the rest of the hood?

punxva
01-14-2007, 04:50 PM
you can also put them on the rear of the hood, depending on what kind of car that you have, and if you track it much

Pank
01-14-2007, 08:47 PM
lol and to whoever gave the neg rep...its called a joke, do you know what those are?

a joke made by someone else already.

Yuri
01-15-2007, 10:38 AM
Hood flapping is common for cars with c/f hoods, and why you need to have hoodpins.
On S13's, there are already holes that fit hoodpins drilled in the radiator support that don't need to be enlarged.

!Zar!
01-15-2007, 11:21 AM
Title: Top Secret Hood Pins... A Secret No More!!!

I've always been a proponent of using hood pins with carbon fiber hoods. However, the typical hood pins out there, although functional, have less than stellar form (i.e. Sparco hood pins). The ones that have some form, don't work too well (i.e. carbon fiber key lock pins which have been known to not hold the hood in at all because of the weak lock-to-hood design).

After a lot of search, I found the crazy flush Top Secret hood pins (for those of you who don't know what they look like, just search on web or look @ final pics)... for $150!!! So I did a little searching... turns out they are rebranded Aerocatch hood pins, available for $90-100.

Sure, still more expensive than normal hood pins, but significantly more pleasing to the eye and race proven (check http://www.aerocatch.com).

There are a couple diy's out there on the web, and I thought I'd do the 240 community a service by detailing an application specific one for our cars ;). The following was done on an S13 w/ silvia front and carbon fiber hood. Installation is for an Aerocatch hood pin and latch set, but basic steps can be applied to other hood pin and latch kits also.


Total Project Time:
- Approximately 4 hours. It is a simple procedure, but I didn't want to ruin my expensive hood, so I took as much time as required - and there are still parts I could have done better and more carefully!


Equipment:
- Painter's tape

- SAR's mask (or something to block the crazy fiberglass & cf dust)

- Some rags and towels to cover work area and clean up area

- Basic tool set (wrenches, pliers, allen keys)

- Drill & drill bit set

- Dremel with sanding and grinding bits

- Something to mark the hood pin and leave a mark for drilling (vaseline, hi-liter, etc)

- Sharpee or equivalent to stencil out hood latch location

- Silicone/RTV sealant (recommended, but not required)

- Baby powder (for your arms, helps keep fiberglass off)


Step 1: Clean Up and Mask Off Work Area
- The work are will get filled w/ dust, but you want a clean as possible area to work on

- Mask off the area you will be installing the hood pin and latch (both on top of carbon fiber, and below hood where the fiberglass skeleton is). For my particular hood, I decided to have the mechanism further toward the outside. I used stock holes (furthest square holes on headlight/radiator support closest to fenders on both sides). This provides a nice relatively even surface to mount the hood pin setup.

- Note: Aerocatch recommends facing the narrow end of the hood pin latch toward the front of the car - can also be slightly angled if desired. The maximum latching angle from hood pin to latch is suppose to be 15 degrees. The mounting location I chose seems to be pretty close to those specs.

http://www.worldwideorange.com/images/qv-hood-pin-install/00-mask-off-work.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/01-find-mounting-point.jpg


Step 2: Start Drilling
- Mark the top of the hood pin with something (either vaseline, hi-liter, etc). Lower the hood, which will leave a mark on the painter's tape. This will be where you start drilling.

- We progressively moved from a 7/32" drill bit to a 1/2" drill bit, making sure the hood pin is lined up with the drilled hole. This is where the SAR's mask comes in handy! Also, cover the engine area with some rags/towels to keep fiberglass and carbon fiber from getting all over your beautiful engine bay.

- At this point, you can notch out the hole a little more. You want to do just enough for the hood pin to stick out through the carbon fiber. This can be done with a dremel with either a sanding or grinding bit.

- Measure twice, drill once... take your time, as you don't want to have to buy a new carbon fiber hood from drilling the wrong location.

- At this point, for normal hood pins, you can just enlarge the hole a little more, and put the latch on top. Then adjust the pin height and you are basically done. The Aerocatch latch requires additional cutting.

http://www.worldwideorange.com/images/qv-hood-pin-install/02-mark-pin.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/03-cover-work.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/04-drill-area.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/05-dremel-area.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/06-some-progress.jpg


Step 3: Stencil and Grind
- Use the supplied stencil from Aerocatch and trace the pattern onto the painter's tape.

- Use a dremel with grinding wheel and cut out the pattern. Note that you will most likely have to cut two layers: carbon fiber layer on top and fiberglass skeleton below. The skeleton below should be cut about 1/2" larger than the carbon fiber area to allow room for installing the bolts & nuts. The baby powder recommendation comes in handy during this phase. The baby powder on your forearms will keep the fiberglass dust particles from sticking and itching. If you don't, don't come crying to me when you are still scratching yourself 3 days after the install.

- Once the basic shape is cut out, switch to a sanding bit and smooth out the rough edges and make the hole just large enough to fit the latch.

- Drill the 6 holes for each latch w/ a bit just large enough to fit the holes (I believe it was 7/32" bit, but can be mistaken).

- Clean off the area again.

http://www.worldwideorange.com/images/qv-hood-pin-install/07-cut-out-stencil.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/08-bump-grind.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/09-bye-bye-cf.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/10-fiber-removed.jpg


Step 4: Apply Lube & Screw It!
- It is recommended to seal up the areas you have just drilled/grinded/sanded to keep the carbon fiber from any possible cracking/spidering/etc.

- Attach the hex screws & washers/nuts supplied with your kit. Screw it down just tight enough to keep it from moving - if you screw them in too tight, you may crack the carbon fiber. The nuts supplied are lock nuts, so they won't loosen themselves.

- Adjust your hood pins accordingly so that they line up and close correctly. I spent a good 30 minutes on just this step, so some patience is required. Ideally, the hood should open and close freely while the latch is up. When the latch is locked, it should not put much pressure on the hood at all (i.e. make the carbon fiber hood bend).

- You can also cut the supplied rubber spacers supplied to length and attach them for some extra hood support and pimpness (not shown in pictures).

http://www.worldwideorange.com/images/qv-hood-pin-install/11-apply-silicone.jpg


Step 5: Finished
- Now you can drive around town and show off your sleek hood pins! Although they may not be noticeable because of their crazy sleek low-profile design.

- Note: You will obviously want to unlock and unlatch your hood pins before unlatching your hood from the stock latch... Make sure to do so first to prevent any nasty results from the pressure applied onto the hood pin latches by releasing stock latch prematurely!

http://www.worldwideorange.com/images/qv-hood-pin-install/12-pins-closed.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/13-pins-open.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/14-pins-open-2.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/15-pins-open-3.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/16-final-height.jpg

http://www.worldwideorange.com/images/qv-hood-pin-install/17-final-height-driver.jpg

I agree with Chmercer...

yokotas13
01-15-2007, 02:05 PM
fuck i gotta get me some of those

vrooompssssht
01-16-2007, 12:42 AM
Sucks they are like 95$ or so for a pair of the locking ones, like $15 less for nonlocking

chmercer
01-16-2007, 01:33 PM
also they are enormous and hard to latch