Realistic Danger of Exhaust Cut-Out? (Fire)
#1
Realistic Danger of Exhaust Cut-Out? (Fire)
Well, I've installed a cut-out into the non-resonated midpipe on the 20b rx7. Because of the ground clearance of the car, it was not possible to have the cut-out pipe (y-pipe) positioned in over/under arrangement.
Imagine a typical aftermarket midpipe. Center Is removed and replaced w/ the E-cut out, and the divorcing part of the Y faces the rear of the car and the exhaust is the passenger side pipe while the driver side is the Valve.
The valve is facing the rear of car but also the inside of the trans tunnel (driver side).
Hopefully you can imagine this...ill try and snap a pic when I can get the car higher.
Everything works flawlessly, I'm just worried, is there a risk of having exhaust gases/flames on decal facing the trans tunnel/rear of the car open like that? I'm thinking of having someone Tig up a very tight radius 90* dump tube to point it at the road, but again, clearance is nearly impossible!
Imagine a typical aftermarket midpipe. Center Is removed and replaced w/ the E-cut out, and the divorcing part of the Y faces the rear of the car and the exhaust is the passenger side pipe while the driver side is the Valve.
The valve is facing the rear of car but also the inside of the trans tunnel (driver side).
Hopefully you can imagine this...ill try and snap a pic when I can get the car higher.
Everything works flawlessly, I'm just worried, is there a risk of having exhaust gases/flames on decal facing the trans tunnel/rear of the car open like that? I'm thinking of having someone Tig up a very tight radius 90* dump tube to point it at the road, but again, clearance is nearly impossible!
#2
Rotary Motoring
iTrader: (9)
Don't do a tight radius 90 deg, do as long a radius 90 deg as you can and then cut everything that hangs below the leg welded onto the cut out.
That is your classic "turn down"- basically, only the outside (top in this case) radius of the bend with a "cheated radius" opening on the bottom.
Everybody is so into getting turn't up they are forgetting about the turn down.
That is your classic "turn down"- basically, only the outside (top in this case) radius of the bend with a "cheated radius" opening on the bottom.
Everybody is so into getting turn't up they are forgetting about the turn down.
#6
Rotary Enthusiast
iTrader: (1)
I'm more curious on how long this cut-out lasts. One of the old drag racers I think ErnieT said the e-cut outs would fail due to the heat. Too much heat messes up the motor/mechanism.
I had researched doing a spring activated one like the apexi pre-silencers/mufflers of old. But they stopped making them because they would get gunked up with carbon and stick shut.
I had researched doing a spring activated one like the apexi pre-silencers/mufflers of old. But they stopped making them because they would get gunked up with carbon and stick shut.
#7
Well, Silentblu,
It already failed
Driving down interstate, hit it in 3rd, bounce off the ignition cut rev limiter with wheel spin at 8k, bam the car is full loud. Pull in the garage and the butterfly is jammed 3/4 open.
Going to just throw a block off plate on it, and remove it when its time to have fun. Screw this stupid bulky massive electronic non-sense.
It already failed
Driving down interstate, hit it in 3rd, bounce off the ignition cut rev limiter with wheel spin at 8k, bam the car is full loud. Pull in the garage and the butterfly is jammed 3/4 open.
Going to just throw a block off plate on it, and remove it when its time to have fun. Screw this stupid bulky massive electronic non-sense.
Trending Topics
#8
Rotary Enthusiast
iTrader: (1)
Well, Silentblu,
It already failed
Driving down interstate, hit it in 3rd, bounce off the ignition cut rev limiter with wheel spin at 8k, bam the car is full loud. Pull in the garage and the butterfly is jammed 3/4 open.
Going to just throw a block off plate on it, and remove it when its time to have fun. Screw this stupid bulky massive electronic non-sense.
It already failed
Driving down interstate, hit it in 3rd, bounce off the ignition cut rev limiter with wheel spin at 8k, bam the car is full loud. Pull in the garage and the butterfly is jammed 3/4 open.
Going to just throw a block off plate on it, and remove it when its time to have fun. Screw this stupid bulky massive electronic non-sense.
#9
Rotary Enthusiast
iTrader: (1)
I thought about doing this before. we probably need a divorced motor to activate the valve. actually instead of cut-out valve, I was thinking of putting in stainless steel butterfly valve just before the muffler with less than 1" hole cut in it. when it's closed, it's much quieter so you're not causing havoc whenever you entire an indoor parking lot. you can let it open manually or when TPS reads over 10% or something.
#11
Rotor Head Extreme
iTrader: (8)
You have more room down there than you think. If your gonna do this, you really need to remake the center section to allow for the Y-pipe. That way you can safely angle the cutout output down. You have the width of the oem cat for room down there. Valve wise you need one from Racereadyperformance. The butterflies are 1/8" thick stainless steel. I have one on my cat bypass setup on my NA 20b.If you had a touring, you could us the fog light switch to activate it.
#12
Tony Stewart Killer.
iTrader: (12)
I had a manual cutout in the dp when i had a single turbo fd and would have preferred an electronic. Manual is a pita and you can't close it quickly when need be. I don't think you'll catch anything on fire as long as its mainly angled toward the ground.
Just ran my fd with no catback this weekend. Sounded awesome, wasn't thaaaat loud. I do have a resonator in the midpipe.
Just ran my fd with no catback this weekend. Sounded awesome, wasn't thaaaat loud. I do have a resonator in the midpipe.
Last edited by Snook; 08-18-15 at 10:34 PM.
#13
"Elusive, not deceptive!”
High temperature exhaust valve....
Think about it... use a wastegate. It is made to take the heat.
And don't use any thing but screamer pipes on both wastegates.
Think about it... use a wastegate. It is made to take the heat.
And don't use any thing but screamer pipes on both wastegates.
#22
Full Member
iTrader: (4)
" CNC Machined 6061-T6 aircraft grade aluminum body
.375 diamiter 316 Stainless Steel Shaft
Torrington Needle Bearings for years of trouble free service
High torque gear motor
Plug and play 16GA. Belden Wiring Harness
Small black rocker switch is only .75" X .50" "
Also what size exhaust do you have? I'm running a 4" straight through w/ 2 mufflers
#23
New to the Club!
Join Date: Jul 2022
Location: New York
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Hello, the exhaust cutout is not dangerous, and the exhaust volume is controlled by the remote control switch, so as to improve the performance of the car.
The only downside is that it increases the sound of the engine.
The only downside is that it increases the sound of the engine.
Thread
Thread Starter
Forum
Replies
Last Post
Captain_Panic
Alternative Fuels
9
09-16-15 02:06 PM
rx8volks
Canadian Forum
0
09-01-15 11:02 PM