Originally Posted by BGIII (Post 2006901)

If that is the case, then why would they use Edelbrock heads? We all know that they are not the best available.

525-550 horsepower is not rocket science. They are buying what makes the boat look faster/better and what they can get the best deal on. With the outrageous prices Mercury Racing charges for their product, it has to look like it is different or better than regular Mercury product. I don't think a guy that is willing to pay 300-500k for a boat w/ 525's and goes as far as to have airbrushed battery hold downs, wants a big old clunky set of KE's under the hatch. It doesn't matter how much horsepower, how good or how reliable they are. I do know that if I had a set of 525's in a 3 year old boat and needed to buy $10,000 worth of new headers because they were
leaking, I would be the most pissed off guy on the internet.

Originally Posted by Rage (Post 2007032)

"if I had a set of 525's in a 3 year old boat and needed to buy $10,000 worth of new headers because they were leaking, I would be the most pissed off guy on the internet"

I could not agree with you more.

Originally Posted by Too Old (Post 2007321)

Fortunately, guys with 525s now have some choices when it comes to replacing those headers.

Originally Posted by bob (Post 2006705)

Rage, interesting comment as I had good inside info that Merc had made offers to KE to purchase his pipes. KE opted not to go there.

Originally Posted by bcarpman (Post 2007781)

If that's true, it would backup my thought's on how much MR is actually paying for the CMI's The only reason KE wouldn't want to go there is if MR low balled them so much they decided it wasn't worth it. I've seen it happen before: CMI may be making almost nothing on their sales to MR, but are counting on the fact that having everyone see their stuff on Blue motors will sell a lot more of the normaly priced headers to compensate.

Originally Posted by Pantera28-650HP (Post 2008288)

Manifolds certainly wouldn't enhance the look of my engine, or the performance!! To each his own though. :D

Originally Posted by the deep (Post 3867288)

Originally Posted by spectras only (Post 4042792)

Borgie, nice manifold. Why are you thinking of running it dry? You'd have over heating problems at the exhaust flanges that way,no?

Originally Posted by the deep (Post 4042796)

Dry as in the cooling water never mixes with the exhaust stream .

Originally Posted by Coolerman (Post 2004187)

Here is a cutaway pic of when I made the headers. They are all 31 to 32 inches in length with a 4 into 2 into 1 collector.
Typically it performed like any good 2 X 32 header with frequently a little extra torque around 3600 to 4400 rpm because the 4-2-1 collectors which typically broaden the torque band. The runners actually have an oval profile with an area equal to a 2" round header. Currently we are using them on 1250 HP motors.
Dennis

Originally Posted by spectras only (Post 4042829)

Lake Okanagan used to be a great place for any high HP boat. Now they're on like donkey kong with anyone with dry exhausts that's reverberate from Peachland to Penticton. Buddy of mine only launches his triple engined boat at the Richmond launch next to the airport,LOL.
I's freaking loud and sounds like an airplane on takeoff. http://www.youtube.com/watch?v=F9VCdKpoh1Q


How's your transom repair going?

Originally Posted by Sunrocket24 (Post 4042791)

My old neighbor in MI had those on his boat. He had a N/A 555CI engine and ran them dry boat sounded bad a$$ and was super loud! I thought they looked cool in his boat.

Originally Posted by Borgie (Post 4043002)

I.

As for your Friends boat,,,, WOW!!! You weren't exaggerating. Glad mine won't be half that loud. Thing is angry!

Originally Posted by baja27 (Post 4056516)

what is the warranty on the new diamond performance header

Originally Posted by endeavor1 (Post 4042847)

Wow, never knew Dennis posted on here. Always thought it was Saxman

Originally Posted by baja27 (Post 4060780)

coolerman do you know the size of the primary's?