3 inch exhaust elbow on CT26

[canadian bum]

Is there a place to get an elbow I checked on mine and its only 2 3/4 inches. So defeats the purpose of putting on a 3 inch exhaust. Is there a place to get a 3 inch exhaust elbow for the CT26?

Obviously this will increase power and change how the turbo responds. Is this worth it to pursue or putting on a different turbo all together be a better upgrade for the amount of money? I have both a 1HD-T and a 12H-T that I will be looking to make run more efficiently. Not building a race engine just looking to improve power and efficiency.

 

[RufusTheDufus]

I don't think it will matter much if you step up from 2 3/4 to 3" near the turbo instead of 3" directly off the turbine housing.

What's the diameter of your exhaust turbine exit port? I doubt it's bigger than 2". Exhaust gasses come out of the turbo at very high speed, most likely in a concentrated vortex. The extra .250" of diameter won't matter much right at the elbow, especially on a diesel. I doubt you would be able to measure any performance difference on a dyno.

 

[canadian bum]

I'm talking about the physical exhaust elbow on the turbo. The outlet on the turbo itself where the exhaust downpipe bolts up to is 2 and 3/4 inches. Now I'm not exactly sure on the diameter of the turbine but to make the exhaust from the turbine and wastegate flow smoother. It's more for lowering EGT's than anything resulting in better performance.

 

[cruiser_guy]

Create your own!! https://forum.ih8mud.com/fj45-owner...-67-central-american-model-4.html#post3292038 I did.

 

[Adam B]

I got mine from Beaudesert Exhausts

They call it 3.5" and it reduces to 3" just before the supplied mating flanges. Not cheap, I paid over 300 CAD shipped from Australia including ceramic coating.

I considered looking at Supra parts but never got around to it.

You might just want to buy a nice new flange from someone like bicperformance and make your own if you can.

 

[Tapage]

something like . ?

 

[Adam B]

Not bad, but you're still using the factory elbow.

This is the Beaudesert 3.5" dump pipe, next to my factory elbow with a homemade 3-bolt flange and 2.5" pipe tapered to 3". I used the 2.5 because it was the biggest thing I could fit between the 3 nuts and I knew it was just for a couple of months until I got the "good" dump pipe.

 

[canadian bum]

Yeah the last pic you can see a nice smooth internal airway to let the heat escape much faster. Did you notice much difference in the performance in the turbo? I imagine you did.

 

[Adam B]

I *think* I notice the difference. I already had the 3" mandrel bent exhaust (home made) and when I did that I definitely noticed a difference. Adding the dump pipe seemed to make a difference to EGTs at higher exhaust flow. It also made the turbo sound more noticable, which I like. Particularly the "woosh" sound when you let off at full boost. Almost sounds like some gay blowoff valve without the gayness.

Everyone says you'll notice how the turbo spools up faster but that's not really my observation. The way I see it, if you're in the range where you're trying to get from no boost to some boost, you're flowing so little exhaust that I doubt there's anything near a restriction.

Really, I just wanted to know that as I kept increasing boost and fuel, that my exhaust wouldn't be a restriction. The turbo itself will be my restriction.

 

[canadian bum]

Yeah that is what I wanted to hear is the difference in EGT's get that hot air out faster and with no funny shaped elbows to cause turbulence in the exhaust. Guess I will have to find some or cough up money for two exhaust elbows for my engines.

 

[cruiser_guy]

Not bad, but you're still using the factory elbow.

This is the Beaudesert 3.5" dump pipe, next to my factory elbow with a homemade 3-bolt flange and 2.5" pipe tapered to 3". I used the 2.5 because it was the biggest thing I could fit between the 3 nuts and I knew it was just for a couple of months until I got the "good" dump pipe.

That looks almost like what I made!!

 

[canadian bum]

Very close however yours is flatter for clearance. I guess I could make something but I have so much other stuff to build so who knows maybe I'll make a couple.

 

[tlc81]

Hey Canadian Bum.
if you make one, please make two. I want one also. I have a 3" exhaust with 2 3/4" dump pipe. have been trying to figure out a way to do it without ordering from overseas... I think its worth it.
Keep me posted! thanks

Very close however yours is flatter for clearance. I guess I could make something but I have so much other stuff to build so who knows maybe I'll make a couple.

 

[Tapage]

I'm pretty happy with my cheap mandrel exhaust .. I need to take a up to date pic since I have a flex pipe section in it now .. to elminate the vibrations ..

 

[canadian bum]

Hey Canadian Bum.
if you make one, please make two. I want one also. I have a 3" exhaust with 2 3/4" dump pipe. have been trying to figure out a way to do it without ordering from overseas... I think its worth it.
Keep me posted! thanks

I will be building 3 then. If I go that route I will build a third I guess depends on how much of a pain it is to build a nice one.

I'm pretty happy with my cheap mandrel exhaust .. I need to take a up to date pic since I have a flex pipe section in it now .. to elminate the vibrations ..

This past weekend I built a mandrel bent exhaust for my buddy's 80 series to go the same route as stock what a pain that was. The exhaust on my cruisers is going to be much easier.

 

[tlc81]

Will you be ceramic coating yours? I might try to find someone in town here who can do that if you make more than one.
thanks C.Bum

I will be building 3 then. If I go that route I will build a third I guess depends on how much of a pain it is to build a nice one.



This past weekend I built a mandrel bent exhaust for my buddy's 80 series to go the same route as stock what a pain that was. The exhaust on my cruisers is going to be much easier.

 

[mudgudgeon]

This past weekend I built a mandrel bent exhaust for my buddy's 80 series to go the same route as stock what a pain that was. The exhaust on my cruisers is going to be much easier.

it is possible to run 3" exhaust between the chassis and gearbox/transfer case on the 80series cruisers. IMO it is a much better option than following the stock route, far less bends.

 

[canadian bum]

That is true or you could just dump it out of the side. My main concern is the 2 3/4 exhaust elbow and getting something that flows better. So far there are build your own which seems like quite a bit of work or get one from Australia.

 

[mudgudgeon]

I am in australia and built my own mainly as I wanted it to run between chassis and gearbox as it gives a much straighter path to the rear of the vehicle.
If you can get a flange cut, it will save a lot of work. I used a pre-made mandrel bend and cut and shaped it to suit. I spent a few hours on it I think.

 

[canadian bum]

Do you have pictures of it?