Revolution marine exhaust ?
 

Has any one had good luck with these? How do they compare?
I have 454 and trs. n/a I kneed an exhaust system I don"t want To run a dry system. I am in fresh watter. cam duration 226 in 236 exh lobe 112...
should be close to 480 hp.
I am looking to try to save some of the budget but i don't want to have to buy a new exhaust every few years. OR ever again hopefully. Do it right the first time.
Looking for some opinions
thanks for the help
Tom

Re: Revolution marine exhaust ?
 

Get ahold of Gordo. He knows all about these. He has installed them on a friends boat.

Re: Revolution marine exhaust ?
 

I put a set on last spring. Substantial improvement in midrange, little if any gain at WOT. in. 224 ex. 234, LSA is 110 {ZZ502/502} and no known or signs of reversion. As far as an after market manifold/riser set up they're probably as good as the rest. Good deal for the $.

Re: Revolution marine exhaust ?
 

I too have purchased a set of the revolution Marine exhaust. I am very happy with them. I had the "old Mercruiser" on one engine and osco's on the other. These are definately an improvement. The weight of the aluminum ones are sooo much nicer. I have stock 365 magnum cams. I do not know the spec's. The performance increase is most notable in the mid range. The folks at revolution are very helpful. Their guaruntee / customer service was excellent from my experience.
Quikdecion.

Re: Revolution marine exhaust ?
 

Fred, there was a Hot Boat article a few years ago comparing a bunch of different exhausts systems. But, I don't think the REMs were out yet.

Re: Revolution marine exhaust ?
 

Here is a comparison in Excel zipped up, no Rev... Weren't they someone else's old molds that originally?

Re: Revolution marine exhaust ?
 

Stainless Marine has some of the nicest stuff out there. I just bought 2 sets from Trick and couldn't be happier. They weigh half as much as my old Gils, are a better design, come with a 5 year warranty, and have a place to put zincs.

Re: Revolution marine exhaust ?
 

Thanks for the replies, I guess there is no substitute for real exhaust. Stainless seems like the way to go.

Re: Revolution marine exhaust ?
 

Judging from your name I'd take a look at Rev Marine,,, two for one basically.About $900 set with shipping.

Re: Revolution marine exhaust ?
 

Ive seen a set of polished Rev Marine manifolds ....real nice piece.......do a search ....Im sure some guys were saying they got some good gains from them......word of caution.....make sure when your pricing you price with all reqd brackets, adapters, bolts etc......it can really make a difference

Re: Revolution marine exhaust ?
 

My understanding is that they are old Eddie Marine castings. So if you are merely looking for a stock replacement they are a great deal.

If you are looking for a performance upgrade I guess I would ask yourself why Eddie Marine came up with a "newer" casting.


Doug

Re: Revolution marine exhaust ?
 

Judging from the general feedback here and from what I've seen in other posts and on other boards, People sure seem to be pleased with the Revolution Marine Exhaust systems. I have several freinds with them installed also and they really like them. All have seen 2-4 mph gains, plus they're the best priced units they could find.

Doug (Boatally Insane),
Do you have any idea what your talking about???? Just wondering were you got this info.

Re: Revolution marine exhaust ?
 

The couple of people I know of that replaced stock exhaust with Revolution Marine with no other changes, saw no difference in performance. For what it's worth...... ;)

Re: Revolution marine exhaust ?
 

From a few of the other performance parts dealers...
That's why I stated "It's my understanding" I could be wrong or they could just be telling me that to sell THEIR products.


Doug

Re: Revolution marine exhaust ?
 

Doug,
That's what I thought, but didn't want to say. Thanks.

Searay Jim,
In most cases the people I'm talking about used the RM manifolds in conjunction with other modifications to help the engine breath better...bone stock applications I wouldn't expect to see much performance gain either.

Re: Revolution marine exhaust ?
 

Well,,they have "tubes" for each cyl for about 8-10 inches,,sorta shorty headers which should perform WAY better than almost no tube going into a common chamber like the stock stuff. Gotta believe better HP and torque and I know they are lighter :)

Re: Revolution marine exhaust ?
 

You get what you pay for.... I've yet to see or hear any engine builder put them on thier motors.

Re: Revolution marine exhaust ?
 

We at Revolution Marine are proud to be the preferred exhaust supplier to Derebery Performance Marine on Lake Texoma just north of Dallas. Leon Derebery is the owner, engine builder, and driver of "Beyond Reason" the Skater that ran 162 and took third place behind Callan Marine and Bacardi Silver at the last two Bud Shootouts at Lake of the Ozarks. Check out their website at www.dereberyperformancemarine.com. There are a few videos of the LOTO run on the site that will get your heart pumping even if you could care less about exhaust!

Attached are a couple of pics of a 496 EFI (New 8.1 liter) built by Derebery Performance Marine and displayed at the Dallas Boat show. The engine features our Revolution Marine performance exhaust, a Arizona Speed & Marine intake, and a few more goodies inside. The motor originally made 385 hp and is still NATURALLY ASPIRATED and now makes 640 ft. lbs. at 4000 rpm and 625 hp at 5400 rpm.

Getting those kinds of numbers out of a naturally aspirated 496, I'd say he got what he paid for and then some!

DPM is an authorized dealer for RM products and we are proud to recommend them as a source for anyone looking to buy our products, or engines outfitted with our products.

Regarding comparisons to other performance exhaust, we do our own dyno comparisons against stock exhaust, but we would be happy to supply product and resources for an independent head to head comparison on engines ranging from a stock 7.4 on up to 750-800 hp.

Todd Wondrow
Revolution Marine Inc.

Re: Revolution marine exhaust ?
 

They are very helpful and proffessional. I know my increased speed on my first set of 454 mags was not from the switch to Dart single plane,,it probably hurt me some but I still picked up a few MPH. Many times what you pay for are ads and overhead but that's hard to accept after you've shelled out $ for a well known brand. Gils and the like will have a better finish but I doubt any performance edge. To go the next step you'd need full tube headers. I love my RMs :) and will be buying 850 gals of gas with the difference

Re: Revolution marine exhaust ?
 

I would love to see a neutral party perform a head to head comparison on exhaust manifolds. I don't know that I would necessarily consider Powerboat Magazine as being neutral either.

Always seem to get a lot of mixed reports on exhaust manifolds and results achieved. Ranging from adding X MPH to spend a lot of $'s and showed no gains.

Re: Revolution marine exhaust ?
 

Well said Todd.BOB

Re: Revolution marine exhaust ?
 

I just think about Ford,GM and others going to shorty headers for the Mustang , vette, etc and have to believe there are large gains over the RPM range compared to using a style that dumps into a common chamber an inch or so from the head. ZERO scavaging effect ,,maybe worse. I'd love to see a big side by side test but until then I think similar designs will be VERY similar in performance. Gil=Stainless Marine=RMs or further up Sterling=CMI. Granted on a 800HP engine that diff. may grow a little but I am not in that group,,Yet.