2 new questions on drilling up pipe and BOV's

[V6UnderPressure]

First question, I have a PTE new front mount with 3 inch aluminum piping. How do I be careful while drilling this? I know aluminum is alot more sensitive to cuts/drilling, any tips? And secondly, I have a Blow off valve about a foot away from the IC in the up pipe. When letting off the throttle, is there a chance alcohol can be pushed out of there causing a flammable situation??? Thanks all for your help!!! By the way this is for a Dual nozzle SMC alky.

Scott

 

[Razor]

I havent seen any situations with the blow-off valves yet. And have done a few vehicles with them. Remember you spray under boost which typically means the throttle is open and air is pushing the mist into the motor. Once you let off the blade and the boost comes down it will stop spraying. There always will be a little residual alky inthe pipe after the blade is closed..and if it were to get sprayed/dumped out the BOV, it would be so minor..not a problem. Actually may help with cleaning the oil drip from the oil pan

On the up-pipe drilling, measure three times and drill once.Up-pipe

This was done on a PTE up-pipe near the TB.

This is a single line, not dual. Its more than adequate given the rite pressure behind the nozzle.

HTH

 

[1badTTA]

As far as drilling aluminum, just don't press too hard with the drill bit and it will cut a nice clean hole, if you do press too hard it will grab as it goes through and may leave some jagged burrs. HTH

 

[Way2QWK]

Razor, On that picture above, how is the nozzle held into the up pipe? Is it just screwed into the aluminum, and welded on bung, or is there a nut on the inside holding it on.

Does your PAC kit allow a weld on bung with the nozzle screwing into it. Im confused

 

[Razor]

No welding, the hole is drilled, a sealing washer is used on the inside and outside of the pipe, then the 90 degree elbow is screwed onto the nozzle.

This may help, Nozzle Only thing is two washers are used.

It makes servicing/inspecting the nozzle really easy. Plus the washers are inexpensive. Other alternative is to use a large flat washer on the inside of the pipe, and screw the brass elbow on the outside, but this will require JB Weld to seal the nozzle.

Hope this helps.

Julio