Dana exhast?
 

I am in the process of changing out the stock Merc exhast on my boat. It has stock twin 502's and i am seriously looking at the Dana's. I would like to know if anyone has used them or had any experience with them, good or bad. Any feed back would be greatly appreciated!

Re: Dana exhast?
 

yea i am interested in them too. they look real nice but have not heard anything about them.

Re: Dana exhast?
 

They have to be just about the coolest looking ones out there. And I see they have a new lower price. :cool:

Re: Dana exhast?
 

Just put some on this spring. Very pleased with them!

Re: Dana exhast?
 

KYElimEagle, Did you notice any significant change in performance or hp, or were they installed in addition to other upgrades?

Re: Dana exhast?
 

Added a bunch of new goodies, so can't compare, I believe these fllow really well though. Someone did some research, can't remember who? Hot boat maybe? These performed very well. Each runner is kept separated until the end of the riser. They also stick out laterally farther than some others could be a space issue in some installations.

Re: Dana exhast?
 

Couldn't have said it better. The Dana's have made me a believer again in manifolds. I'll just have to wait for the Bassett headers to 'go' before buying a set.

Brian

Re: Dana exhast?
 

I don't know about the headers, although they look cool, but I will tell you that my experience with dana is that they may send out brackets that don't fit or missing parts. They sent me wrong bracket set and when it didn't fit they said to go to hardware store for parts. They have no costmer service.

Re: Dana exhast?
 

Hi again Gary, for the who don't know the story, Gary has shared this story roughly 6 times on OSO. He was kind enough to purchase an Aqua Step ladder from us and he did receive the wrong stainless bolts. We've offered time and time again to issue a store credit or some cash back for his inconvenience. I still have not yet received a response. But to clarify, yes there was some confusion on the installation and we did send him the wrong stainless bolts. We've apologized, and tried to move forward. As far as the our exhaust systems, they work very well. We've had great success in making good HP on a variety of applications. If anyone needs any technical information I'd be happy to help them. I'm sure our customer base would disagree about the comments that were made about our customer service. It's pretty simple, we're not perfect, and once and a while mistakes happen. The reality is, when you call our shop, a friendly representative answers the phone ready to assist you, our customer, no voice mail run arounds, and we have most products in stock ready for same day UPS.

Re: Dana exhast?
 

Dana-
Is there a limit on the dimensions between cranskshafts for the exhaust systems?

Re: Dana exhast?
 

They'll fit down to 34.5" centers out of the box. We can gain an extra 1/2" by milling off the logo plate and fly cutting the flange allowing installations on 34" center to center applications.

Re: Dana exhast?
 

I have bought a number of things from DMP and have been very satisfied. I am lucky in the fact that I am local (near them) and for a couple of weeks made it my stop on my way home. I went back and forth picking up parts, returning, exchanging, and waiting for parts to be powder coated as I needed them, with no hassles on anything. My boat has some custom parts that couldn't be replaced so DMP even powder coated MY parts to match, they said it would be expensive, but $95 for the finishing parts of a $100k boat, big deal...


Now do I get my free set of Gibsons???

Re: Dana exhast?
 

Almost

Re: Dana exhast?
 

dana, When I see someone on this board that is asking for advice on a product or vendor than I will always tell my experience ( good or bad). I have had GREAT experience out of aqua step, paul phaff, bob teague, trick marine, eddie products. and eliminator boats to name a few. It is not about the money and that is why I told you I did not need any refund. I needed a ladder that would work on your platform. The first time I called you with the bolts not being long enough you told me to go to a hardware store. ( Not I will take care of it and I'm sorry I shipped you the wrong thing). after going to lowes and gettin longer stainless steel nuts and bolt I found out the brackets were not wide enough. I called your customer service and again and was told they could not help me since they did not make the ladder. ( not , we are sorry and will call our rep from aqua step and get it sent out as soon as possible). I than called aqua step and explained to them that your company would not take care of the problem. They apoligized for you and over nited the right brackets. I love my step and the product your company sold but you did not have ANY customer service to mention. I have been in small business my whole life relying on repaeat customers and word of mouth. I would never tell a customer to go anywhere else to correct something after I have taken there money. So I will always on this site or when asked i n person, tell about any vendor I have had dealings with ( good or bad).

Re: Dana exhast?
 

We've gone over this several times, and again, we've apologized several times. You don't want to do business with us, although unfortunate, I can accept your decision. Thank you for your original interest in Dana Marine Products, and if there's anything we can assist you with in the future, please don't hesitate to let us know.

Re: Dana exhast?
 

It is getting a little old Gary, every time DMP starts a thread you jump in and tell your story about some bolts. I hate to be an a$$ but if I got a mail order part and it has the wrong bolts I would go to the hardware store and get the right ones without even calling them, it's just not worth the trouble or the wait to have them send them out to me. As far as the brackets, yeah it sounds like they screwed up and sent you the wrong one's but I gotta tell you there are about 1000 diffrent brackets for aquasteps, I have installed many of them and don't think I have ever used the same brackets twice most of the time we wind up making are own out of aluminum plate. You have made your point now give it a rest.

Re: Dana exhast?
 

Yes. :D

Plus, I need room to squeeze in a pair of diverters at some point. (the natives are getting a little bothered where I boat) I still enjoy having the option of an 'unmuffled symphony' while offshore :drink:

B

Re: Dana exhast?
 

MAN!!!......you are payin' for that one arn't ya.......!!!

Re: Dana exhast?
 

well said hillbilly 24.

Dana, will these be direct bolt on replacements for the newer ('99)502 MPI's that have the oil filter and drive bottle bracket mounted up front without modifying the bracket?
Thanks

Re: Dana exhast?
 

Gary, I did ask for feed back on the exhaust, and don't get me wrong, I appreciate you sharing your story with me, but I am a relatively new here and even I have heard this story enough times. I think when a buisness maliciously wrongs someone then you should bang the drum like the eveready rabbit, but from what I have heard this seems like an honest mistake and as they say CHIT HAPPENS!!! They seem to have made every effort to make it right and at this point that is all they can do!!! I have already spoken to them on the phone and they spent alot of time with me answering my questions and went into great detail to explain the differences between their headers and others. At this point, (as far as the staff goes) I am comfortable with them. No one else has chimed in to beat the drum along with you and as tight knit as this sight seems to be, if they were that bad, you would not be a solo act. However I am still looking for REAL WORLD applications of the headers because that is how you find out how durable they really are!! Thanks to everyone that responded so far, and to those that hopfully will!!

Re: Dana exhast?
 

I have got on this site many of times and gotten good advice from you. The step I ordered from them I did not want to try and fabricate brackets for. It was not they made a mistake ( we all make them) it was the customer service part or lack of. The first call was, go to the hardware store for bolts. The second call was, Oh well your screwed. They did not offer any new brackets, money back or a we are sorry till I told my opinion on oso. I rely on your experience and others on this site to make purchases from vendors I don't know. Danas shipping, price and packaging was great. It was the customer service that was missing. I was saying on this site about the exhaust, if you need something that will just bolt up than dana products should not be a problem, but if there is a chance that you may have to have service or advice after they have gotten your money than good luck. If people only want to hear good things about a company so they can feel good about a purchase than they should go the that companys web site. Dana did NOT try to make it right till I told my storey on oso. When I get on this site and ask about a problem or product than PLEASE be honest and tell me your story ( good or bad). I can than make my own mind up on what to do next. That is what makes the site so valuable.

Re: Dana exhast?
 

To be totally fair about the GSmith story when Gary ordered the Aqua step he did specify he had Dana Marine swim steps. The problem is that over the last few years and the growing desire for people to install the Aqua Steps to our swim platforms we made a machine change on our steps. We have been pre-drilling and tapping all of our steps for the last couple of years. When the Aqua Step was ordered he specified that he had our steps and they were on an Eliminator Boat. We sell hundreds of sets to Eliminator and it is physically impossible for us to know what version of the step he had. We shipped him our standard set up which bolts directly to our swim steps. Upon receiving the step Gary realized his steps were not pre-drilled and tapped and required longer bolts so he could through bolt them. I do remember Gary calling to discuss the bolts and at no time was anyone rude to Gary, we simply suggested that if he wanted to get it handled relatively quick he could find the 1/4-20 bolts at any local harware store. There was never any bad words exchanged, he said he would take care of it. As a matter of fact I never heard another word about the subject until it was brought up on OSO, where I learned that the brackets wouldn't work either. As stated on another thread, if Gary was mis-treated, talked to poorly, or any other form of attitude, I could understand his frustrations. He ordered the step, it was delivered in a timely fashion at a fair price and he had to make a slight modification to install it. Sorry for long, drawn out story, since we aired out half of it so many times, now everyone on OSO knows the whole deal. Thanks for all the support.

Re: Dana exhast?
 

Getting back to the original reason for this thread, US Fountain, the drive bottle is bolted the motor and it can stay there, the exhaust will get closer, but it will work. We can make you the little oil filter legs. You use your stock oil filter bracket, we will provide you will two little stand off legs to adapt it to our risers. No Problem.

Re: Dana exhast?
 

How about some more info on the exhaust? Is there a website? More pictures? How do these flow compared to stock merc manifolds and CMI headers? How good are they with salt water?

Too bad I got stuck in a flame war about ladder bolts...

Re: Dana exhast?
 

Dana, KYElimEagle mentioned that your exhaust was a little wider than stock. How much wider is it? I have a little room to work with, but not alot. It could be an issue and I would like to be able to measure before ordering.

Re: Dana exhast?
 

Our website is www.danamarineproducts.com, go to the products icon, scroll down to exhaust systems and the Dana Marine Flow Torque exhaust will be listed. The manifolds will fit out of the box on 34.5" center lines. I'm not familiar with how wide a stock manifold is, but measure your engine installation and we can see if they'll fit. We can specialize the manifolds to get down to 34" center to centers.

Re: Dana exhast?
 

Hey Zimm, when being used in a salt water environment we hard anodize the manifolds before the powdercoat. This will seal the aluminum and you'll be good to go. Of course, we don't charge 1 extra red cent for this service, unlike others.

Re: Dana exhast?
 

Don't mean to take sides here. I don't know gary and I don't know anyone from dana. Customtouch simply asked for an opinion and even though gary posted his experience several times maybe like me, customtouch hasn't read it before. I for one would like to hear all opinions good and bad. If I hear 10 good stories and one bad, I can pretty much conclude the one bad is the person that you just can't please no matter what you do and so the merchant shouldn't fear for his reputation.If people are tired of hearing the same story simply skip the thread.

Re: Dana exhast?
 

I am considering pruchasing the Dana Marine exhaust for a new Catamaran being built this winter. Do they make custom tail pipes? What size pipe can be used 5 inch?

Re: Dana exhast?
 

The biggest reason I am considering the Dana's is because they can build different tailpipes if needed. I only need a stock configuration for silent choice right now, but if I decide to up-rade motors that will change. I like the fact that I won't have to buy a completly different set of headers if I do! I will just have to change tailpipes. What is availible, I don't know, but I am sure Dana will chime in and tell you!!

Re: Dana exhast?
 

I just checked out the website and the price is more than competetive....Do the aluminum risers have the seperated runners? What is the effective length of the runners with each of the risers? Looks to be a really nice set up. Thanks- Chuck

Re: Dana exhast?
 

I have sold Dana exhausts in the past to quite a few customers and have had no complaints. Awesome looking exhaust. Just my two cents. Steve Snider

Re: Dana exhast?
 

Thanks for all the good feedback. The aluminum risers do not have the individual runners. That option is only available on our Vortech stainless steel risers. With the Vortech stainless steel risers the runner length is 27". We currently don't have anything for 5" exhaust.

Re: Dana exhast?
 

Here's some of requested technical data,

Surface area of a primary port on the manifold flange-
3.062" DMP Manifold
2.759" 1 7/8" tube header

Surface area of a primary port at the collector-
2.785" DMP manifold 4 ports collectively 11.14" area
8.9416" I.D. Tube header with a 3.5" I.D. pipe 4" O.D.
11.787" I.D. Tube header with a 4" I.D. pipe 4.5" O.D.

Normal tube header runner length is 15.5"
DMP exhaust have a 27" long runner length
Our primaries carry through the riser flange.