headers/exhaust

[jazzy]

I put more miles on boat in a weekend than you put on yours all year Plus the fact nobody else wants to come your way.

hey id be glad to come out your way to go boating but you have to remember a lot of the guys on here dont really have great lakes boats it would suck to set up an event and have a lot of people sidelined because they arent used to boating in 4-6 foot waves

 

[Needafunboat]

I just read thought this string - going through some older posts - thinking of doing some...'uh stuff to the motor in the fall and checking out some ideas.

I've said it before and I'll say it again - elk/torch is big enough for the deep boats to run as long as they want and (usually) calm enough for the smaller ones too. Can watch the wind and make a game day decision on where to go.

 

[winter]

I'm having a ton of problems with my Eddie Marine exhaust system on my mildly worked 454 (468ci) Chevy. I won't get into it just yet, they have one more chance to make things right before i throw them under the bus!

 

[mkhammer]

Did you call Eddie marine and tell them of your problem?
And if yes what did they say?

 

[lcboater]

Did you call Eddie marine and tell them of your problem?
And if yes what did they say?

Eddie or Kenny are always great about taking care of problems! Like MK ask,what did they say?

 

[winter]

I'm not going to get into it just yet. They have my less than 8 month old parts back for a second time to correct overheating issues that burn up the hi-temp ultra-expensive silicone hoses. I, along with my boat technician spoke several times to the overall manager of EMI and he hasn't been very re-assuring that they can make this problem go away. Trust me, there will be a fresh posting come early summer if this system is still causing me problems.

 

[yellowfiero88]

Nothing worse than paying good money for junk parts. Hope it gets resolved in a timely and fair way winter.

 

[winter]

Nothing worse than paying good money for junk parts. Hope it gets resolved in a timely and fair way winter.

Me too!

 

[mkhammer]

There is not much that can go wrong with the cooling in an exhaust except blockage.
sounds like bad risers to me, or the joint and gaskets arn't lining up. plumbed wrong which I doubt. I do not promote their products. Some people have no issues with them and some do.

I would recommend Imco Power Flows, Dana, Lighting or CMI If you have to replace.

 

[winter]

Def. no blockage, plenty of water comes out the pipes. Jamie at Lakeside no doubt plumbed it correctly, and he even had to go to the trouble of drawing up a diagram as to how THEY should fix it, by adding extra drain holes at certain places. We'll see if they actually take his advice this time around.

 

[mkhammer]

So your engine runs cool but the exhaust burns hoses?

 

[winter]

So your engine runs cool but the exhaust burns hoses?

Yup. I installed new autometer gauges and the water temp shows on average 130-150 degrees, never saw higher. Water pressure gauge shows nice psi. Simply put, the design of these risers creates dry spots near the bottom which cook the hoses. Looking inside there is only one large drain which probably forces the water to miss some of the piping opposite of the drain itself, instead of a swirl effect EMI was hoping to have.

 

[mkhammer]

Yea that's where I was going you have hot spots. it can be caused by bad castings internally in the manifolds. They tried to copy Imco exhaust but did not hit it but only in looks. That's why there are cheaper.
you are not the first to have problems with them and it is not worth the $500.00 saved over Imco's

The only thing that can cause this is internal blockage. If the manifolds have dump holes in the front and the rear going to the riser, the riser should be packed with water.
if there is blockage in the riser it too will give hot spots. The blockage maybe manufacturing defect. If you have to modify them to work they are not worth using.

Here is a picture of a Imco riser gasket, if the emi gasket look the same the restriction may be in the manifold and one side is not getting enough water through it. You could run 10 psi of water through the manifold from the bottom inlet with the riser off and see if both hole flow the same. (manifold off the engine) Then test the riser one hole at a time see what amount of water is going through them.

It's kinda like cast iron manifolds that have been in salt water too long, They start getting hot spots then eventually start over heating the engine due to rust and corrosion blockage.
Exhaust are a vital part of the cooling system as we know.

 

[winter]

I'm getting too far into it at this point, didn't want to throw them under the bus just yet, but you are right, they aren't made right. They sent me the pipes back the first time and all they did was take a large punch and drive it inside the NPT inlet port to make a little room for extra water. How's that for fixing the problem!? I'm a click away from throwing their name on every site i'm a member of.

 

[Big Red]

Def. no blockage, plenty of water comes out the pipes. Jamie at Lakeside no doubt plumbed it correctly, and he even had to go to the trouble of drawing up a diagram as to how THEY should fix it, by adding extra drain holes at certain places. We'll see if they actually take his advice this time around.

Had the same problem with my boat one time. Looked like plenty of water flowing. The engine ran cool and the exhaust was cool. But I kept burning exhaust hoses. I was running imco exhaust, after taking them off to inspect I found no problems. Three sets of exhaust hoses later I found the problem.

The hose going from the drive to the transom was kinking. It allowed just enough water to pass to keep the engine cool. The harder I ran the boat and added trim it would burn the exhaust hose and never once would the engine temp go up.

 

[winter]

That's interesting, it may be something i'll have to have a peek at. I'd have been skeptical of that if the motor was running cool as well as the pipes. But, it's the same thing i've found. Motor is chilly, pipes warm but not burning up either.

 

[sclemons]

Winter, you should be applauded for holding back criticism so far.
Most of us would probably curse the manufacturer to no end 'before really knowing'
what the problem is and possibly having to eat our words later.
There have been a few good ideas passed your way, I hope they help, and soon, summer's coming

 

[jazzy]

Had the same problem with my boat one time. Looked like plenty of water flowing. The engine ran cool and the exhaust was cool. But I kept burning exhaust hoses. I was running imco exhaust, after taking them off to inspect I found no problems. Three sets of exhaust hoses later I found the problem.

The hose going from the drive to the transom was kinking. It allowed just enough water to pass to keep the engine cool. The harder I ran the boat and added trim it would burn the exhaust hose and never once would the engine temp go up.

you must have got the softer of the two versions of hose did you switch to the stiffer stuff i know when i put the motor back in my convincor i had the softer stuff and hated it. it would compress and expand with the lope of the cam i switched that out for the stiffer stuff and had a hell of a time getting it back in i ended up having to take the tails out of the transom sliding the hose on the risers with some lube and then putting the tails back in the transom
winter that sucks dude and its not like that hose is cheap either

 

[Big Red]

you must have got the softer of the two versions of hose did you switch to the stiffer stuff i know when i put the motor back in my convincor i had the softer stuff and hated it. it would compress and expand with the lope of the cam i switched that out for the stiffer stuff and had a hell of a time getting it back in i ended up having to take the tails out of the transom sliding the hose on the risers with some lube and then putting the tails back in the transom
winter that sucks dude and its not like that hose is cheap either

No jazzy I got the good stuff from imco a total of 4 times plus a new set of tips because it burnt the flaps out. I got where I could change both sides in 15 min. The best way for me was unbolt the risers, put the hoses on then bolt the risers back on. It would never burn a whole all the way threw but it did smoke up the boat a time or two.

The hose coming from the drive to transome, the water pickup hose was kinking.

 

[Big Red]

That's interesting, it may be something i'll have to have a peek at. I'd have been skeptical of that if the motor was running cool as well as the pipes. But, it's the same thing i've found. Motor is chilly, pipes warm but not burning up either.

Motor ran cool, I would burn hoses and be able to still stick my hand on the exhaust. The boat would poor out water from the exhaust on a hose, tub of water, and in the lake. Dont know what it did over 3800 rpms in the lake. I could never get anybody to hang their head off the swim platform and look. LOL It was about 4000 rpms with trim when it would burn hoses and got worse everytime I went out.