Electric cutouts

[AzPete]

I have always tried to install any cutouts on a bend where they would get the most flow out when open. Just wondering how much exhaust is still traveling out the regular tail pipes when the cutouts are open.

Been looking where to put them on the '11.

Thought about at the bend where they start to go up for the rear axle.....


Or maybe closer to the front at the bend after the cats....


Need to actually get them and look at where I have the room to install them.

[68EFIvert]

mustang67408, I get a password request when clicking on your images.

So do I.

[AzPete]

I was able to view them

[mustang67408]

mustang67408, I get a password request when clicking on your images.

Hmmm, this site is different than the others I post on, Try now, I redid the pics.

[SAC69]

Hmmm, this site is different than the others I post on, Try now, I redid the pics.

OK, I can see them now, thanks.

[guruatbol]

I am intrigued!  I have been thinking of these for years for ED (65).  should they be before or after the "H" pipe?  Or does it matter?

Mel

[AzPete]

Does not matter before or after the H pipe. To close to the engine and the heat may cause warping. I know it would on the old style cable controlled type.

Up until the mid 80's, I had the standard cutouts that I just uncapped them. That was a hassle but the local law required any cutouts to be capped on the street. Got around that later with a rubber ball that would plug the pipe snug. Put a bolt thru it and a good spring. I could open the cable control from inside, and the pressure would pop the ball out and the spring pulled it back up under the car. The spring normally lasted about 6 months before the ball would get launched about 50 feet. Always had to watch where I opened them at.

[68EFIvert]

My car is at the exhaust shop right now.  I am having them put on the cutouts, new Magnaflow mufflers and custom SS 2.5" pipes.  Should be a pretty sweet system.  I hope to have some pictures to post later today.  I hope I can get home before the snow storm comes in later today. 

[crustycurmudgeon]

I think those would make a great theft deterrent. 

Frank

[stangg]

Got around that later with a rubber ball that would plug the pipe snug. Put a bolt thru it and a good spring. I could open the cable control from inside, and the pressure would pop the ball out and the spring pulled it back up under the car. The spring normally lasted about 6 months before the ball would get launched about 50 feet. Always had to watch where I opened them at.

I had been thinking of doing something similar on my chevy since I'll be working on the exhaust soon... Did the spring break due to the heat,  or was the ball failing somehow causing the spring to launch. I was thinking of using a modified ball collector for the valve portion with a spring and cable arrangement.  I like the electrical ones,  but something about making a simple mechanical system seems pretty cool too.

[AzPete]

For the ball to be able to be pushed out of the tube, and the spring to pull the ball up and under the car, I played with several tensions. Once I got what I wanted, I found the end of the spring could only take some many launches. It would break at the mounting. A better pivot may have been worked out.

BTW, this was the first mod I did to a '57 Chevy back in '69.

[mmw68]

I went ahead and followed 68Vert's lead, and went with the dmhperformance.com oval units. Wow these things are work of beauty, and the Dave the owner is a joy to deal with.
They are not listed on the site, but, just call Dave.

They are being installed today, so I'll report back at the end of the week.

[68EFIvert]

Nice!  I still haven't wired mine yet.  We have been busy getting the house ready to sell so I haven't had much time in the garage.

[mmw68]

I don't envy you, we moved last September - it was a great time to buy a house, but the financing took a act of good to get all the paperwork done. We even had to get our congressman's office to step in to help with a certification of payment of our taxes to the IRS. It was just crazy!!!

Quick and dirty shot of the pipes tacked in, The car should be ready today, and I've already warned my wife I will be held up in the garage all evening wiring these things in! My local car group is meeting on Saturday morning, so these should wake everyone up. 

[Midlife]

Those cutouts look like they will force hot exhaust gas onto the tranny...are you sure that's what you want?

[mustang67408]

Those cutouts look like they will force hot exhaust gas onto the tranny...are you sure that's what you want?

I was thinking the same thing.
You could add a "Y" pipe right there and point them to the back away from the trans.

[ClassicRecreations]

Great thread. I will add these to the venom model. I've been looking at the jba ones but these look nice

[mmw68]

Hi Everyone,

I just wanted to report back on the cut outs. I finally got them wired up yesterday, and they are a blast to have. It more fun then sex.... well almost. ;)
Tonight my family, and I where to meet for dinner, I picked my 10 year old son up from boy scouts, and headed to meet the rest of the family. I put him in charge of the cutouts.

We rolled up to a intersection, and spied mom and family across the way stopped at a red light. "Dad" rev engine... says son, then he says as he flipped the switch... My wife could not stop laughing, she could hear the car way across the intersection. It was way too much fun!!!

These DMH cutouts preform flawlessly, open close in less than two seconds. The only thing cheap is the switch he used. Either it was defective from the start, or just crap. I picked up a DTDP momentary toggle switch from radio shack and Iam using that until I build my custom console. It on one of those cheap switch holders right under the radio so both driver and passeger can reach it. I'll try to take some video on Saturday.

-Mark

[68EFIvert]

I have an update on my DMH cutouts as well.  I intalled my exhaust quite some time ago and when I wired up the cutouts they seated so tightly they did not open when I hooked them up (good thing).  I called Dave the owner of DMH and told him my dilemma and the said that is common and to tap the baffle with a hammer when the button in pushed.  I jacked up my car to unbolt the cutout but jacked it from the driver's side only.  I had the ds unbolted and did not like the twist it was causing my car so I put the car down when the cutout was handing from one bolt so that I could reposition the jack.  As you could imagine the handing cutout got wedged between the floor and the exhaust.  It caused some serious damage and basically ruined my new $180 cutout before I even used it.

I called up Dave and let him know I screwed it up and said I would like to mail it back to him to see if he could repair it for me.  At this point I am trying to control my losses.  Dave said to send it back and he will see what he could do.  As it turns out it was unrepairable.  He said he appreciated my honesty and GAVE ME A NEW ONE!  That is customer service!!!!!  I should have the new one on tonight and ready for a car show this Saturday.  I can't wait to open up the cutouts!