Anyone with IR injection run "naked"

Sure I've driven naked.

It's dangerous though. Lots of gawkers and people leaning out the windows yelling rude things.

I found it is best to keep a kielbasa on the seat with you. Just in case some one sticks their head in the window, you just wack them in the head with it...unless she's pretty...then you just show her the kielbasa?

Well, sure, me too, all the time.

I meant to say, do you drive with your intake holes open?

Wait, let me rephrase that again.

Do you drive your pantera with IR intake velocity stacks with no screens or air cleaners?

quote:

Originally posted by mike the snake:
Well, sure, me too, all the time.

I meant to say, do you drive with your intake holes open?

Wait, let me rephrase that again.

Do you drive your pantera with IR intake velocity stacks with no screens or air cleaners?

Not regularly but I have. That often is necessary in the tuning process of the carbs.

On yours, you have no cover over them at all so I wouldn't advise it.

You would probably be fine with a GT40 type of "cookie sheet" over them?


As far as MY intake holes, I've learned to grit my teeth. It kind of filters out the bugs. The big ones at least.

Look at Goran Malmberg's clear intake box with the filter on the top. It's in the "Hemipanter" web site.

Maybe that could satisfy the craving for both looks and provide a element of safety for you engine?

Mike, look at the filter-cans Porsche uses on 911s & 914s running Webers. A problem comes up when a filter-box is built over IR intake trumpets and it's volume is too small or uses foam filters (Porsche does both). An IR intake pulses airflow so powerfully that fuel flows in an airstream in both directions- into the engine and back out the trumpet mouths. There's often a visible fuel cloud hanging about 6" over naked intake trumpets in dyno photos, at certain rpms.

If the filter(s) you choose is foam, it soon gets saturated with raw fuel. DCOEs sometimes actually drip raw fuel out the bottoms of the air cleaners. Then a backfire from any cause will light off the fuel-soaked foam and you have a raging fire inside the air cleaner(s). Two of my engine fires and one on a friend's 911 were caused by exactly this; use paper air filters only.

Note- all of this happened on Weber-carbureted engines; dunno if it also holds true for EFI, but it should be simple enough to test- it's engine-speed dependent so you need not even be driving to see a cloud begin to appear above the stacks at some rpm.

The fuel pulse is from the fuel held in suspension in a carb.

The FI doesn't completely eliminate it but it becomes difficult to detect.

The only fuel being held in suspension in a fuel injected car would be from fuel bouncing off of something in the intake inlet.

Otherwise the fuel injection shot is timed.


You really can't use any filters over ida's on an american v8. There will always be some overlap.

The key SEEMS to be to hold that to 28 degrees or less. Then you don't see the fuel plume.

Is it there? Probably.

quote:

I found it is best to keep a kielbasa on the seat with you. Just in case some one sticks their head in the window, you just wack them in the head with it...unless she's pretty...then you just show her the kielbasa?

BAWAHAHAHAHAHA!!!

Do you suggest the cookie sheet to keep the fuel cloud contained? Because I have EFI, not Weber carbs, so I shouldn't have the vapor cloud above the stacks correct?

I had a shop recomend foam, high dollar air filters for my 50mm PMO 3 barrel (high dollar HUGE Weber based carbs for big HP Porsches), and I only had small momentary fires until the engine fired (when hot) but yes, the foam filters smelled like gas after runs.

quote:

Originally posted by PanteraDoug:

quote:

Originally posted by mike the snake:
Well, sure, me too, all the time.

I meant to say, do you drive with your intake holes open?

Wait, let me rephrase that again.

Do you drive your pantera with IR intake velocity stacks with no screens or air cleaners?

Not regularly but I have. That often is necessary in the tuning process of the carbs.

On yours, you have no cover over them at all so I wouldn't advise it.

You would probably be fine with a GT40 type of "cookie sheet" over them?


As far as MY intake holes, I've learned to grit my teeth. It kind of filters out the bugs. The big ones at least.

being efi there are no jets or airbleeds to plug up. Probably the biggest problem is how much dust/dirt will your engine ingest while driving around . check out how much dust there is on a car sitting outside , or take a wet towel and lay it on pavement ,that fine dust will kill guides and rings quickly.

quote:

Originally posted by mike the snake:
Do you suggest the cookie sheet to keep the fuel cloud contained? Because I have EFI, not Weber carbs, so I shouldn't have the vapor cloud above the stacks correct?

I had a shop recomend foam, high dollar air filters for my 50mm PMO 3 barrel (high dollar HUGE Weber based carbs for big HP Porsches), and I only had small momentary fires until the engine fired (when hot) but yes, the foam filters smelled like gas after runs.

quote:

Originally posted by PanteraDoug:

quote:

Originally posted by mike the snake:
Well, sure, me too, all the time.

I meant to say, do you drive with your intake holes open?

Wait, let me rephrase that again.

Do you drive your pantera with IR intake velocity stacks with no screens or air cleaners?

Not regularly but I have. That often is necessary in the tuning process of the carbs.

On yours, you have no cover over them at all so I wouldn't advise it.

You would probably be fine with a GT40 type of "cookie sheet" over them?


As far as MY intake holes, I've learned to grit my teeth. It kind of filters out the bugs. The big ones at least.

You don't need to worry about reversion. It would have already caught fire with the other air cleaners if there was a reversion issue.

The cam timing in the Porsche dosen't cause blow back like an american v8 will. The 911s uses 46ida-3 carbs.

The cookie sheet is for the birds to leave their berries of offering to the god of fire without dropping them in the volcano.

Maybe now is the time to decide which is better .. looking cool or protecting the engine/car. Just sayin'

MY Porsche was a bit special, and used 50mm PMO carbs. $5000, based on webers, even shared some parts, but they still showed evidence of burning (inside of foam filter was charred), I think I was just lucky the car always started! lol

quote:

Originally posted by PanteraDoug:

quote:

Originally posted by mike the snake:
Do you suggest the cookie sheet to keep the fuel cloud contained? Because I have EFI, not Weber carbs, so I shouldn't have the vapor cloud above the stacks correct?

I had a shop recomend foam, high dollar air filters for my 50mm PMO 3 barrel (high dollar HUGE Weber based carbs for big HP Porsches), and I only had small momentary fires until the engine fired (when hot) but yes, the foam filters smelled like gas after runs.

quote:

Originally posted by PanteraDoug:

quote:

Originally posted by mike the snake:
Well, sure, me too, all the time.

I meant to say, do you drive with your intake holes open?

Wait, let me rephrase that again.

Do you drive your pantera with IR intake velocity stacks with no screens or air cleaners?

Not regularly but I have. That often is necessary in the tuning process of the carbs.

On yours, you have no cover over them at all so I wouldn't advise it.

You would probably be fine with a GT40 type of "cookie sheet" over them?


As far as MY intake holes, I've learned to grit my teeth. It kind of filters out the bugs. The big ones at least.

You don't need to worry about reversion. It would have already caught fire with the other air cleaners if there was a reversion issue.

The cam timing in the Porsche dosen't cause blow back like an american v8 will. The 911s uses 46ida-3 carbs.

The cookie sheet is for the birds to leave their berries of offering to the god of fire without dropping them in the volcano.

I actually still have room to install my old air cleaners.

quote:

Originally posted by Robbie:
Maybe now is the time to decide which is better .. looking cool or protecting the engine/car. Just sayin'

I made a cover that somewhat covers the gap between the rows of stacks. This will help a little with debris sucked up from under the car.

I'm planning on making screens for the stacks.

As often as I drive the car, I'm not worried about wearing it out.

It's all going to be torn apart and checked/blueprinted anyways soon.

...I know this is going to 'Rain on Your Parade', BUT, What About The DIRT?
We get a Lot of 'Dust Clouds' out here in the Valley.
They're Your Rings and Bores, a Suppose.
I Think, in the Long Run, You'll Be Sorry, when the Engine Starts to Smoke!
I Speak from Experience!

NEVER Run With-Out a Air Cleaner!! EVER!!

I may reinstall my old air cleaners. There's enough room still to run them, but I'm looking at other alternatives, to change the look.

Possibly 8 single K&N style filters? Not sure how that would look.

quote:

Originally posted by mike the snake:
I may reinstall my old air cleaners. There's enough room still to run them, but I'm looking at other alternatives, to change the look.

Possibly 8 single K&N style filters? Not sure how that would look.

Something like this? These are K&N.

They won't fit your stacks though. Just the regular weber stacks AND they will be too tall for your 5" stacks.

The Weber stacks are 3-1/2" tall.

As the sat here, they were 6-1/2" as an assembly.


These help to quell that sociopath social image you may have developed?

They quiet that ridiculous induction howl that the engine develops with the open stacks. It's such a socially irresponsible sound to make?

This is Marlin's intake naked. This is when he is using it as a vacuum cleaner in the neighborhood?

...Pictures of My Filtering System, And the Distributer-less Ignition. How the Filters Look when I'am NOT Accessing the Carbs.