B6 Exhaust Piping?

[sketchman]

Anybody ever ask Mandrel Exhaust Systems?

I just emailed them about a 1 3/4" down pipe back system. Should be a good size for a 1.6. They are very nice on price on their pre-bent setups, but not sure about the Festiva since they don't generally offer it.

I'll post up once I get a response. Would be FAR superior to a generic crush bend muffler shop job.

[Movin]

Anybody ever ask Mandrel Exhaust Systems?

I just emailed them about a 1 3/4" down pipe back system. Should be a good size for a 1.6. They are very nice on price on their pre-bent setups, but not sure about the Festiva since they don't generally offer it.

I'll post up once I get a response. Would be FAR superior to a generic crush bend muffler shop job.

They are pretty!

[zoom zoom]

this is kinda neat, http://www.mk5cortinaestate.co.uk/calculator5.php

[BigElCat]

Coool link Zoom.

1.5" gives a max of 92bhp.

Dan's efi B6 8-valve is about in this range. (Am I right, or wrong?)

I'd say "stay as small as possible" for torque, throttle respose, longer radius bends. No cat, easy to replace stock oval/big core muffler.

[BigElCat]

IIRC, the stock B6 downpipe is 1.50" ID. It looks bigger because of the double wall tubing. 6or a stock B6, I would stay with 2" or smaller. If you look at my build thread in the garage forum, I have pics of a custom 2.125" mandrel bent downpipe and a comparison to the factory diameter.

I looked for your build, wow, 500 pages of posts. How about a link, or a few hints. I'd like to see this. What was the title of your build?

[Safety Guy]

Since Zoomzoom's link to the calculator comes form a Cortina site, I bet it is configured to work primarily for non-turbo four cylinder applications. Probably SOHC, too.

So it might do just fine for NA SOHC engines like the B3 and B6.

On the other hand it doesn't take into account displacement. I wonder if that's important?

I might be wrong. Very wrong.

Karl

[Movin]

For a single input to base calculations from HP or KW would be most relevant.

[blkfordsedan]

I looked for your build, wow, 500 pages of posts. How about a link, or a few hints. I'd like to see this. What was the title of your build?

Sorry. All I have is my Blackberry right now. Its Project Procrastination...should be 3 or 4 pages back in the Garage forum. I agree, 1.75" would be about right for a stock B6.

You can buy pre-bent (mandrel) elbows in 90 and 45 degree from Summit and Speedway. With a welder and chop saw, a nice system can be had for little money.

[zoom zoom]

Since Zoomzoom's link to the calculator comes form a Cortina site, I bet it is configured to work primarily for non-turbo four cylinder applications. Probably SOHC, too.

So it might do just fine for NA SOHC engines like the B3 and B6.

On the other hand it doesn't take into account displacement. I wonder if that's important?

I might be wrong. Very wrong.

Karl

Should not matter if it's a turbo or NA, or if it's 4 cyl or 6 cyl, or 12... sohc/dohc is irrelevant, like displacement. A 4 cyl car that dyno's at 200 hp pumps the same amount of air as an 8 cyl car that dyno's 200 hp. Like it's already been explained here, you just need a pipe capable of flowing X amount of CFM/lbs per minute, without being so big velocity is lost, or so small it's restricting.

[blkfordsedan]

BigElCat-

Here's a link to the exhaust manifold & downpipe comparison;

http://www.fordfestiva.com/forums/showthread.php?t=39104&page=3

[drddan]

Coool link Zoom.

1.5" gives a max of 92bhp.

Dan's efi B6 8-valve is about in this range. (Am I right, or wrong?)

I'd say "stay as small as possible" for torque, throttle respose, longer radius bends. No cat, easy to replace stock oval/big core muffler.

Hee Hee! :p

Dan's B6 8-valve will be carbed!

Weber 32/36.

I will use 1 3/4 pipe on this: ( which I just picked up today)






It is nice that the yard protected it, by capping it, with all the red and blue caps and plugs.

[BigElCat]

Hey Dan....I found some 304SS tubing at work...it's 1 3/4".

I have a B3 e manifold with the head pipe still attached, I can use this as a mock up to hit the original Festiva cat converter. I realize you won't want run the stock exhaust from there, but the location needs to be exact.

Post a pic of your B6 e manifold with the heat shield off. What year was your B6 made? I'll buy a gen 2 B6 e manifold, and make us some heavy duty head pipes.

I'll need to source a couple of 90* elbows in 304 SS. This rest is gratis from my job.

[TominMO]

Hey Dan....I found some 304SS tubing at work...it's 1 3/4".

I have a B3 e manifold with the head pipe still attached, I can use this as a mock up to hit the original Festiva cat converter. I realize you won't want run the stock exhaust from there, but the location needs to be exact.

Post a pic of your B6 e manifold with the heat shield off. What year was your B6 made? I'll buy a gen 2 B6 e manifold, and make us some heavy duty head pipes.

I'll need to source a couple of 90* elbows in 304 SS. This rest is gratis from my job.

Pretty sure Dan's B6 is a gen1 motor, based on the valve cover. So the gen2 exhaust manifold my not apply.

[BigElCat]

Yup. I see the efi on Dan's B6: the e manifold is going to be inferior to this one.



Bummer. My goal was to make a head pipe to fit between this style and the stock Festiva converter.

[drddan]

Hey Dan....I found some 304SS tubing at work...it's 1 3/4".

I have a B3 e manifold with the head pipe still attached, I can use this as a mock up to hit the original Festiva cat converter. I realize you won't want run the stock exhaust from there, but the location needs to be exact.

Post a pic of your B6 e manifold with the heat shield off. What year was your B6 made? I'll buy a gen 2 B6 e manifold, and make us some heavy duty head pipes.

I'll need to source a couple of 90* elbows in 304 SS. This rest is gratis from my job.

Pm'd