B6 Exhaust Piping?

[drddan]

Well...time to click...Buy it Now... I guess :p

I was leanin' towards the Bosal pipe, I think its a little bigger in diameter.
Now the next thing is to have flanges welded onto the ..."cat"... I have picked out.

[Christ]

Well...time to click...Buy it Now... I guess :p

I was leanin' towards the Bosal pipe, I think its a little bigger in diameter.
Now the next thing is to have flanges welded onto the ..."cat"... I have picked out.

More than one way to skin a "cat", eh?

[drddan]

^ :p

[BigElCat]

I had another thought!

I've seen a couple of pics go by with the exhaust outlet in front of the right rear tire. The outlets are flat ovals like Nascar style. I'll look for the pics and some info about this.

The "cat" could be a 2 1/2" core stock oval muffler or canister muffler, with one of these race car outlets angled back. Super flow, simple, and quiet.

[BigElCat]

Dr Dan...start lookin' for a cheap high flow muffler that has the same outside dimensions as the stock cat. Maybe a 2" core turbo. I'm on this Nascar style outlet.

It will go in front of the right rear trailing arm. It will be the lowest point on the floor pan, so running over things in the road will have to be considered.

I could go heavy duty, and make it a skid plate.

Or light weight, and cheap to replace.

What do you think of exhaust in front of the rear tire in general? I don't think it would mess up our rims. It's not like we're running gold plated wire spokes.

[Christ]

The exhaust in front of the rear tire is not the best way to extract power, but the differences, including the heat to the tire, are so little that it's only worth considering if you plan on driving to the moon.

[loknlode]

hey mods - you're dropping the ball. EVERYTIME I post a ? about doing something to a festy you move it to "the proper section", usually the repair forum.

then you pm me to let me know.

is it any wonder why there is some confusion regarding the "general" forum post rules?


just sayin:p

[BigElCat]

The exhaust in front of the rear tire is not the best way to extract power

You ain't seen nothing yet, Hoss!:p

I'm starting with 2" 11g black iron tubing. I'm mean I'm building this thing to fit my car. Dr Dan could talk me out of the prototype, I'm building it now.

Pics are pending.

[BigElCat]

hey mods - you're dropping the ball. EVERYTIME I post a ? about doing something to a festy you move it to "the proper section", usually the repair forum....then you pm me to let me know...is it any wonder why there is some confusion regarding the "general" forum post rules?...just sayin:p

This one should probly be it in the engine drive train column?

I super like FF.com! Don't want no trouble

[BigElCat]

TE...CH A...I...R, what's that spell?

[BigElCat]

This is a 2" 11g tube. It transitions to a 7/8"x7" rectangle, with an offset sweep that will clear the exhaust tunnel. The rectangle is divided into 3 equal ports.

The front two ports each have a diverter 'spoon'. The rear most diverter spoon covers about 40% of the cross sectional area.

[BigElCat]

The front diverter spoon only protrudes into approximately 7% of the cross section. It will gain more than 7% of the flow due to turbulence, and any exhaust pushing back from the spoon behind it.

The over all cross section area of the rectangle is much larger than the cross sectional are of the 2" tube. This means no 'area' restriction, only the reluctance of the exhaust gasses to change directions.

I have this thing tuned to produced a very specific tone. Yeah right. I hope it doesn't sound like Bobstad's saxophone...the one without any key works.:p

I'm predicting a nice mellow rumble, without any reduction in power or driveability. Will it extract power? No, extraction is all over with after the head pipe.

[Christ]

Largest restriction to a side exit is the flow /outside/ the pipe. You've got to make sure it ends up either in a convergence zone (stagnation) or a high flow (low pressure) zone to avoid it.

But, again, the difference is negligible.

[BigElCat]

Yo! Dr D

Let's see if we can't get a turbo muffler to fit in the 'cat slot'.

My side outlet is progressing, but I'm probably going to have to stuff it with wadding to run as I am; without a muffler.

My next phase would be to design a side outlet that clamps directly to a glasspack. A glasspack will barely fit in the Festiva tunnel, if I can find one short enough. This would be direct fit cat back system. A turbo muffler instead of the cat, followed by my glasspack/side outlet would be a contender for ultimate Festiva exhaust (IMHO).

[BigElCat]

the difference is negligible.

negligible and mute...We have exactly one exit location for a side exhaust on the Festiva...is it a "stagnation zone"? It's our interface to the world!

Isn't there some research you could be doing on the surface of the moon?