bottlenecking?

[supradjza80]

7 months have passed and in those 7 months i have driven the car some what hard at times so should i be ok?

No real way to tell. Just drive it and if it does go out fix it correctly. We cannot tell you when or if you HG will blow.

 

[ValgeKotkas]

When we are at the topic of bottleneck in exhaust and hope the OP doesn't mind...
I'm doing a full 3" turboback but after getting the muffler I noticed it had about 2,5" opening just where the muffling part starts (the pipe itself before that is 3").China shit:nono:.
Cutting and hacking it up to get it to 3" is too much work for now - so my question: How could it affect my system with stock ct26 and I think about 10psi?

 

[GrimJack]

When we are at the topic of bottleneck in exhaust and hope the OP doesn't mind...
I'm doing a full 3" turboback but after getting the muffler I noticed it had about 2,5" opening just where the muffling part starts (the pipe itself before that is 3").China shit:nono:.
Cutting and hacking it up to get it to 3" is too much work for now - so my question: How could it affect my system with stock ct26 and I think about 10psi?

Pure math.

2.5inch pipe has a cross sectional area of 4.9 square inches.

3.0inch pipe has a cross sectional area of 7.1 square inches.

So, you'll lose just over 30% capacity leaving it the way it is. Will this work for a stock CT? Probably. Is it ideal? Not by a long shot.

 

[Keros]

When we are at the topic of bottleneck in exhaust and hope the OP doesn't mind...
I'm doing a full 3" turboback but after getting the muffler I noticed it had about 2,5" opening just where the muffling part starts (the pipe itself before that is 3").China shit:nono:.
Cutting and hacking it up to get it to 3" is too much work for now - so my question: How could it affect my system with stock ct26 and I think about 10psi?

This will create back-psi that will mess up the cylinder scavaging making the carberator useless, don't do it!

Seriously though, it might make a noticable difference in sound, but on a CT26, it won't be a HUGE effect on performance... maybe enough to notice. It probably won't be OFMG! But it might make a difference.

 

[ValgeKotkas]

This will create back-psi that will mess up the cylinder scavaging making the carberator useless, don't do it.

:runaway::runaway::runaway:

Thanks, If it doesn't make a huge difference in performance I'll let it be for now.
If there's something really wrong then it should come out on the dyno graph?
And you say that the sound could be a lot quieter? (That's good )

 

[gaboonviper85]

This will create back-psi that will mess up the cylinder scavaging making the carberator useless, don't do it!

Seriously though, it might make a noticable difference in sound, but on a CT26, it won't be a HUGE effect on performance... maybe enough to notice. It probably won't be OFMG! But it might make a difference.

There is no such thing as BACK pressure!

The scavange effect doesn't work on turbo engines...why you even said that I have no clue

we don't have carbs...

Kero....you failed

 

[jagpride]

This will create back-psi that will mess up the cylinder scavaging making the carburetor useless, don't do it!

Seriously though, it might make a noticable difference in sound, but on a CT26, it won't be a HUGE effect on performance... maybe enough to notice. It probably won't be OFMG! But it might make a difference.

carburetor?WTF.Limited Edition supra?ha ha

 

[WhtMa71]

There is no such thing as BACK pressure!

The scavange effect doesn't work on turbo engines...why you even said that I have no clue

we don't have carbs...

Kero....you failed

It was obviously a joke..

 

[IJ.]

Mine had a Carb......

 

[Zumtizzle]

Mine had a Carb......

Yea, then you lost a jet and blew your manifold. :aigo:

 

[IJ.]

Yea, then you lost a jet and blew your manifold. :aigo:

jet?

 

[Drake69]

I was wondering what IJ was smoking... :yelrotflm

 

[gaboonviper85]

It was obviously a joke..

But was it....?

 

[IJ.]

I was wondering what IJ was smoking... :yelrotflm

But mine DID have a Carb

 

[Drake69]

But mine DID have a Carb

That would've been cool to see running.. :naughty:

 

[IJ.]

That would've been cool to see running.. :naughty:

Made 490rwhp

 

[A. Jay]

But was it....?

This will create back-psi that will mess up the cylinder scavaging making the carberator useless, don't do it!

Seriously though, it might make a noticable difference in sound, but on a CT26, it won't be a HUGE effect on performance... maybe enough to notice. It probably won't be OFMG! But it might make a difference.

I think it was too, but yea my first thought was WTF FAIL.

Pure math.

2.5inch pipe has a cross sectional area of 4.9 square inches.

3.0inch pipe has a cross sectional area of 7.1 square inches.

So, you'll lose just over 30% capacity leaving it the way it is. Will this work for a stock CT? Probably. Is it ideal? Not by a long shot.

Also, the exhaust will cool down on the way out. If it will get dense enough to maintain the velocity idk, maybe someone'll have something to say about it.

OP: Any word from the engineer yet?:biglaugh:

 

[WhtMa71]

But was it....?

I sure hope so.

 

[Nghty89]

Make sure to check your carburator fluid before putting on the DP as well! :sarcasm:

 

[Poodles]

Seriously though, it might make a noticable difference in sound, but on a CT26, it won't be a HUGE effect on performance... maybe enough to notice. It probably won't be OFMG! But it might make a difference.

It's VERY noticable as I did this exact thing. Stock DP was broken by a shitty shop (long story) so I got a DDP with stock(ish) catback. When I went to a high flow cat and 3" catback it made a HUGE difference.