Best way to cut hole in Battery tray for fmic?

[Deadrodent]

Is there a template that I can use to cut the hole? What tool should I use to cut it? I doubt I could remove the tray since it's welded on so would i just cut directly through it? thanks in advance guys!

[AZhitman]

Hard to do, since a cutting torch won't go through the 2 layers, and hole saws aren't big enough (usually).

You could drill lots of tiny holes and use a hacksaw blade to "connect the dots", or use a torch and do it from the top and bottom.

[Deadrodent]

how do most people do it?

[doridori23]

Hole Saw! They make Hole saws up to 8 inches, we use an 8 for JBL W7s . Depending on your target HP goal you will either have 2.5" or 3" piping regardless of which you have buy a hole saw 1/2" larger than the piping. Also buy 6" of heater hose the size of your hole saw. Some NAPA/Advanced, etc etc wont have heater hose this big (used for class 5 and up trucks) because they suck. In the event that they don't have hose large enough find a trucking garage, truck stop with a shop etc etc and buy the hose from them.

Measure twice and cut once. For a clean install you only get one shot at making the hole of do not mess it up. Cut your hole and then when you put your IC piping in the hole you should have a 1" piece of the giant heater hose lining the batt tray. It will be a snug and tight fit (some times we need sandpaper or a file to make the hole ever so slightly bigger) but assuming the car gods like you it will go in just right. The heater hose is now acting like a giant rubber grommet so when you accelerate, brake, hit potholes, etc etc the piping doesn't rack up against the hole and wear a hole in the piping.

Hope that helps and happy modding!

[AZhitman]

dori, good call! I hadn't seen a holesaw that big except for industrial applications.

OK, it's official - Use a holesaw!

[CMG]

D

dori, good call! I hadn't seen a holesaw that big except for industrial applications.

OK, it's official - Use a holesaw!

Don't know how much a hole saw costs, probably alot. A Dremel should work, I think it's a carbite tip you use maybe.

[doridori23]

Check LOWE's or Home Cheapo for a hole saw. Remember to go slow as the faster you drill the hotter it will get and heat is what kills drill bits and saw blades. Use two hands on the drill because when the bit binds and whips the drill around and your hand will get crushed between the fuse box and the drill (yes this is personal experience). The Dremel method will work but takes a bit more massaging but it will yield a clean cut in the end. Another method I have seen used is mark the hole on the batt tray with anything then take a drill and make about 40 holes as you drill the circle out then take a hammer and beat the living heck out of the batt tray. It is caveman style but if thats all you have to work with it will get the job done...

[Deadrodent]

is there a template i can follow? i have one of the new greddy m-spec intercoolers if that matters much

[Morph]

is there a template i can follow? i have one of the new greddy m-spec intercoolers if that matters much

Do you have the pipes???? As stated earlier just get the pipe and outline it on a peice of paper annnndd I'm just going to quote the rest...

Depending on your target HP goal you will either have 2.5" or 3" piping regardless of which you have buy a hole saw 1/2" larger than the piping. Also buy 6" of heater hose the size of your hole saw. Some NAPA/Advanced, etc etc wont have heater hose this big (used for class 5 and up trucks) because they suck. In the event that they don't have hose large enough find a trucking garage, truck stop with a shop etc etc and buy the hose from them.

Measure twice and cut once. For a clean install you only get one shot at making the hole of do not mess it up. Cut your hole and then when you put your IC piping in the hole you should have a 1" piece of the giant heater hose lining the batt tray. It will be a snug and tight fit (some times we need sandpaper or a file to make the hole ever so slightly bigger) but assuming the car gods like you it will go in just right. The heater hose is now acting like a giant rubber grommet so when you accelerate, brake, hit potholes, etc etc the piping doesn't rack up against the hole and wear a hole in the piping.

Hope that helps and happy modding!