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-   -   Where to get 4" exhaust hose? (https://www.offshoreonly.com/forums/general-q/365778-where-get-4-exhaust-hose.html)

Alwhite00 04-11-2020 04:54 PM

Where to get 4" exhaust hose?
 
I'm swapping my 260 carb for a 350 mag mpi the exhaust is bumping up to 4" where's the best place to buy this stuff without paying $10.00/mm?
Not sure how much I exactly need but I'm guessing 5' total for both sides.

on a side note. Could I run 4” stainless tubing with the rubber on each end?

Rookie 04-11-2020 08:11 PM

Where in Michigan are you? I bought some at my marina and it really isn't cheap anywhere you get it. I might have a couple feet laying around my pole barn in Muskegon.
Ebay has it for $18/ft

Alwhite00 04-11-2020 08:34 PM

Would it be ok to run SS tube with the rubbers on the ends?

I may take you up on that 2’.

I’m in the thumb.

Rookie 04-11-2020 09:10 PM

I've run 4" stainless inside the 4" ID high temp silicone hose for years. You just can't use hose that is non-supported/rigid hose, because the hose collapses and opens when under power. It's a pretty neat phenomenon.
If it's water cooled I don't see an issue.

Alwhite00 04-12-2020 08:21 AM


Originally Posted by Rookie (Post 4733278)
I've run 4" stainless inside the 4" ID high temp silicone hose for years. You just can't use hose that is non-supported/rigid hose, because the hose collapses and opens when under power. It's a pretty neat phenomenon.
If it's water cooled I don't see an issue.

yes, it’s wet exhaust. I’m picturing 4” SS tube with a 6” piece of the reinforced rubber on each end. Not exactly following what the high temp silicone hose you are mentioning. Is it like the cold side turbo stuff or am I way off?

Ryan00TJ 04-12-2020 08:28 AM


Originally Posted by Alwhite00 (Post 4733311)
yes, it’s wet exhaust. I’m picturing 4” SS tube with a 6” piece of the reinforced rubber on each end. Not exactly following what the high temp silicone hose you are mentioning. Is it like the cold side turbo stuff or am I way off?

I've ran this setup.for a few years with no problems. HPS couplers and Ebay pipe.

https://www.ebay.com/itm/4-x-4-OD-DI...2-3bb9e1663467

https://cimg8.ibsrv.net/gimg/www.off...eab33d0894.jpg

Ryan00TJ 04-12-2020 08:32 AM

https://hpsperformanceproducts.com

Believe I used 4 1/8" size so 4" pipe easier to push in.


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