F-25/F-26 Exhaust route

This forum is for comments and the exchange of information relating to Trojan Boats and boating. Please do not post used parts or boats For Sale in this area. For general, non-boating topics please use our "General Discussions" section.

Note: Negative or inflammatory postings will not be tolerated.

Moderators: BeaconMarineBob, Moderator, BeaconMarineDon

Post Reply
jefflaw35

F-25/F-26 Exhaust route

Post by jefflaw35 »

I have been researching these differeneces for a week. Some like mine have 2 single ports of exhaust (dual), some are Y directed from the engine (single). I am wandering if I can Y mine off the motor, run striaght then Y again out my port holes. Or any other ideas of direction. I am designing my decking and looking to add fish lockers. Any free space helps. What is the purpose on these boats for Y exhaust like a car? Same engine as mine so why is mine dual exhaust?
larryeddington
Ultimate User
Posts: 1876
Joined: Mon Sep 28, 2009 5:08 pm
Location: Canton, TX Boat on TEXOMA

Post by larryeddington »

Jeff my f28 withe two 318s have each engine into one four inch exhaust. Maybe that is why your engine said 235?
Larry Eddington
1984 F-36 Tri Cabin "The Phoenix II"
1978 F-28 "The Phoenix"
Fish Master 2350 Bay Boat
9.5' Dink
jefflaw35

Post by jefflaw35 »

i have dual exhaust, you maybe correct, the ones im seeing say 225. and they have One exhaust port....grr more confusing crap. Well im putting 225 back in her so I guess the question is, just how many different directions can I bent this system?
User avatar
The Dog House
Active User
Posts: 807
Joined: Mon Jan 09, 2012 6:51 am
Location: Bordentown, NJ

Post by The Dog House »

My F26 with a single Chrysler 225 (318) has twin exhaust, with one exhaust per exhaust manifold. There is no cross-over tube to equalize the pressure between the two. The engine runs very well with this setup.
1993 Sea Ray 200 Overnighter OB with 1993 Mercury 150 hp Outboard
1979 Starcraft 14' Rowboat with 2011 Mercury 9.9 hp Outboard
Former boat: 1971 Trojan F26
User avatar
prowlersfish
2025 Gold Support
2025 Gold Support
Posts: 12725
Joined: Sat Nov 05, 2005 6:56 pm
Location: Lower Chesapeake Bay ,Va

Post by prowlersfish »

Nothing wrong with going to single exhaust , It will sound better too IMO. Its very possible it came will single exhaust and was changed , seen this done many times . ( some people like the noise :) )
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
jefflaw35

Post by jefflaw35 »

that makes alot of sence as well. Now im just left with a really good sized hole to patch :shock:
User avatar
Torcan
Moderate User
Posts: 728
Joined: Tue Dec 21, 2010 7:35 pm
Location: Toronto, Canada

Post by Torcan »

I will try and get a pic for you Jeff of mine as you requested. I have just completely forgotten every time I am at the boat.
1980 Trojan F 25 "MY TYME" (sold)
1986 Thundercraft Magnum 280 "The HAILEY-SAVANNAH"
http://www.cbyc.ca/
jefflaw35

Post by jefflaw35 »

Ok thanks, heck I forgot I asked. I have found a couple online pics of the Y pipe but they are close up engine pics. I would be interested in seeing how the entire run looks, btw when I shake my mufflers they sound like a box of rocks. Should i replace them or just clean them out? Guess I will only need one of them now.
larryeddington
Ultimate User
Posts: 1876
Joined: Mon Sep 28, 2009 5:08 pm
Location: Canton, TX Boat on TEXOMA

Post by larryeddington »

If they are the rubber ones, you cannot get them and will have to use something different as I am doing. Mine had two of the rubber ones per engine. It will not have one 4 inch one per engine.

The rubber ones had baffles inside which I will bet you are no longer there, exhaust just passes straight through.
Larry Eddington
1984 F-36 Tri Cabin "The Phoenix II"
1978 F-28 "The Phoenix"
Fish Master 2350 Bay Boat
9.5' Dink
User avatar
Big D
Ultimate User
Posts: 2876
Joined: Sat May 01, 2010 10:39 pm
Location: Ontario, Canada

Post by Big D »

You could use and exterior muffler if you're looking for more space inside, they are rubber. http://www.foreandaftmarine.com/mufflersSALISBURY.htm

This site says they have rubber in-line ones
http://yardeng.com/productwriteup.asp?id=14
She was a 1969 36 ft wooden beauty with big blue 440s that we'll miss forever.
And thanks to the gang, 2012 Trojan Boater Of The Year
jefflaw35

Post by jefflaw35 »

exccelent thanks D!! Im going to email them a picture of what I had and what I want!!
User avatar
Torcan
Moderate User
Posts: 728
Joined: Tue Dec 21, 2010 7:35 pm
Location: Toronto, Canada

Post by Torcan »

You asked for some pics on how my exhaust was set up.
here they are. :)

Image

Image

Image

Image
1980 Trojan F 25 "MY TYME" (sold)
1986 Thundercraft Magnum 280 "The HAILEY-SAVANNAH"
http://www.cbyc.ca/
jefflaw35

Post by jefflaw35 »

WOW thank you very much BUD!!! Im gonna nee that Y pipe, should be easy to get, then I can have a good sized fish locker on the oposite side of the decking. Thanks for the trouble with the pics, very helpful :D
User avatar
alexander38
Ultimate User
Posts: 3179
Joined: Sat Sep 27, 2008 6:48 am

Post by alexander38 »

Carver 3607 ACMY 454's Merc's
10' Dinghy 6hp Merc.
La Dolce Vita
Let's hit the water !

http://s852.beta.photobucket.com/user/t ... 8/library/
jefflaw35

Post by jefflaw35 »

sweet thanks Tony!
Post Reply