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reDECKulous
05-29-2007, 02:21 PM
I know I know... Two posts about headers in an hour. Anyway, anyone running these Eddie Marine headers on their 496HO? The seem to be a littel cheaper than the CMI, just want to make sure I'm not sacrificing any quality.
Eric

tamalewagon
05-29-2007, 02:25 PM
Have you looked at Lightning headers too? They're a little less expensive than CMI and probably weigh less than the Eddie Marine headers.

Nordic35Flame
05-29-2007, 02:36 PM
DANA MARINE PRODUCTS, their 496 KIT is badass. It's a complete kit, we bolted on in my buddies garage in 3 hours, with normal tools, and he picked up 8mph. I think he paid like $2700 complete

Hotcobra270
05-29-2007, 03:03 PM
DANA MARINE PRODUCTS, their 496 KIT is badass. It's a complete kit, we bolted on in my buddies garage in 3 hours, with normal tools, and he picked up 8mph. I think he paid like $2700 complete
What size boat did the headers go on?
8mph is HUGE!

Not So Fast
05-29-2007, 03:12 PM
DANA MARINE PRODUCTS, their 496 KIT is badass. It's a complete kit, we bolted on in my buddies garage in 3 hours, with normal tools, and he picked up 8mph. I think he paid like $2700 complete
I agree, Dana with the complete kit is the direction I would go, lots of stuff to relocate if you use others. Pick up 8mph :eek: :confused: :confused: I switched from a 496 HO/24p to an HP 500/26p which comes with CMI headers included and I went from 68 mph to 72+ so these claims leave me very confused, it is just not that easy to pickup 8mph but whatever :idea: NSF

Nordic35Flame
05-29-2007, 03:16 PM
Sorry 6 mph MY BAD:D

Not So Fast
05-29-2007, 03:24 PM
Sorry 6 mph MY BAD:D
No problemo Flame, still 6mph is confusing after what I did and the results are the absolute truth. If you use 12-15 hp for a 1 mph increase then my results are spot on, thats all I can say. NSF

reDECKulous
05-29-2007, 03:24 PM
What were you running stock with the 496ho/24p? I can't seem to get close to 68 with my boat.
I agree, Dana with the complete kit is the
direction I would go, lots of stuff to relocate if you use others. Pick up 8mph :eek: :confused: :confused: I switched from a 496 HO/24p to an HP 500/26p which comes with CMI headers included and I went from 68 mph to 72+ so these claims leave me very confused, it is just not that easy to pickup 8mph but whatever :idea: NSF

Not So Fast
05-29-2007, 03:35 PM
What were you running stock with the 496ho/24p? I can't seem to get close to 68 with my boat.
In Feb, with two guys and half fuel, fairly flat water the best I saw was 68 on the nose. Summer time 64+ so if your boat is new or you have only run summer temps then there you go. I see all of these claims of high gains but what I did resulted in a 4+ mph gain with a step up in prop also. And as stated the HP 500 has CMI exhaust stock. Will your boat sound and perform better, I would say yes, absolutely, but to expect even 4mph is a stretch IMO and we have the same boat so its apples to apples and thats the truth!!! :idea: Good luck and I would use the internally runnered Danas so that everything bolts up and no fabricating Again .JMO NSF

reDECKulous
05-29-2007, 03:37 PM
Awesome, thanx for the advise. I can't seem to touch 64 or 68 regardless of how many people are in the boat. I'm topping out around 55.... not sure what the reason might be... only have 45 hours on the boat.
Eric

Cole Trickle
05-29-2007, 03:57 PM
Awesome, thanx for the advise. I can't seem to touch 64 or 68 regardless of how many people are in the boat. I'm topping out around 55.... not sure what the reason might be... only have 45 hours on the boat.
Eric
What are you topping out at RPM wise?
Are your numbers speedo or GPS?
IMO...If your only seeing 55 you either have lead filled sponsons or something is wrong with your motor.:)
My 28 sleek with a 496HO runs anywhere from 60-65 GPS with a labbed 24 at 5100rpms.(Boat is usualy loaded and has lots of stereo weight)
This weekend I lost about 600 RPM's and 6-8 MPH (Chris at Prestige thinks I am down a cylinder)

epeagle
05-29-2007, 04:02 PM
i believe the eddie manifolds are aluminum...that would save a ton of transom weight too!

reDECKulous
05-29-2007, 04:03 PM
Speedo
RPM's are maxing out around 4500... boat just seems sluggish... I don't know the first thing about engine's so I'm in the dark on this one... any advise is appreciated. Tech at Magic said it probably needs a tune up...?
Eric
What are you topping out at RPM wise?
Are your numbers speedo or GPS?
IMO...If your only seeing 55 you either have lead filled sponsons or something is wrong with your motor.:)
My 28 sleek with a 496HO runs anywhere from 60-65 GPS with a labbed 24 at 5100rpms.(Boat is usualy loaded and has lots of stereo weight)
This weekend I lost about 600 RPM's and 6-8 MPH (Chris at Prestige thinks I am down a cylinder)

Cole Trickle
05-29-2007, 04:07 PM
Speedo
RPM's are maxing out around 4500... boat just seems sluggish... I don't know the first thing about engine's so I'm in the dark on this one... any advise is appreciated. Tech at Magic said it probably needs a tune up...?
Eric
What size prop?(24)
They propped me wrong from the factory when I bought my boat so stranger things have happend. 4500 is way too low so you either have prop or motor issues.(You need to be as close to the limiter as you can without hitting it)
I think you need to take it in for warranty and have them look for obvious problems. Spark or fuel
I call BS on a tune up after 40 hours;)

reDECKulous
05-29-2007, 04:12 PM
That is what I am thinking. I'm running a 24 right now... has a few small dings, but not enough for a 10mph loss. Where are you on the rpm's?
What size prop?(24)
They propped me wrong from the factory when I bought my boat so stranger things have happend. 4500 is way too low so you either have prop or motor issues.(You need to be as close to the limiter as you can without hitting it)
I think you need to take it in for warranty and have them look for obvious problems. Spark or fuel
I call BS on a tune up after 40 hours;)

Magic34
05-29-2007, 04:16 PM
You should be turning around 4900-5000 RPMs.
Prop first, then look at the motor next. They should let you try a different prop. Are you turning a 24 now? Try another 24.
55 MPH, hell I run that. :D

reDECKulous
05-29-2007, 04:18 PM
Yes, 24. For $100k I was hoping to do a little more than 55. Sometimes it takes me a while to plain out as well. Sometimes I'm up in 10 seconds... other times minutes... it's weird.

Music to my Ears
05-29-2007, 04:24 PM
This weekend I lost about 600 RPM's and 6-8 MPH (Chris at Prestige thinks I am down a cylinder)
I thought the same thing last weekend and it turned out to be a bad spark plug. Hopefully you'll be in the same boat - so to speak.:D

supremeWAXer
05-29-2007, 04:26 PM
5000 rpm 68 mph with a 24 prop on mine Big E . magic should let you try new prop.... what do you guys think a 22 would do
Speedo
RPM's are maxing out around 4500... boat just seems sluggish... I don't know the first thing about engine's so I'm in the dark on this one... any advise is appreciated. Tech at Magic said it probably needs a tune up...?
Eric

ULTRA26 # 1
05-29-2007, 04:30 PM
Speedo
RPM's are maxing out around 4500... boat just seems sluggish... I don't know the first thing about engine's so I'm in the dark on this one... any advise is appreciated. Tech at Magic said it probably needs a tune up...?
Eric
Brandin has the right idea.
I too would suggest that you take the boat in and have the motor checked as I don't believe that it is running right. Also could be a drive alignment issue. 40 hours is way to soon to need a tune. Just my .02
John M

reDECKulous
05-29-2007, 04:33 PM
I appreciate the help guys. I will cancel the tune up and have them take a look at the engine... which is all under warranty.
Eric
Brandin has the right idea. Even with a 26 on your boat you should be seeing more than 4500 and at 4500 a 26 would have you running closer to 63 mph at this RPM
I too would suggest that you take the boat in and have the motor checked as I don't believe that it is running right. You shoud be running over 60, over proped or not. Also could be a drive alignment issue. 40 hours is way to soon to need a tune. Just my .02
John M

ULTRA26 # 1
05-29-2007, 04:36 PM
I appreciate the help guys. I will cancel the tune up and have them take a look at the engine... which is all under warranty.
Eric
BTW,
Nice looking boat :D

4trax
05-29-2007, 04:36 PM
Are you talking about these? If so I like them alot.
These are EMI Thunders.
http://i144.photobucket.com/albums/r162/4trax67/Boat%20parts/100_2662.jpg
http://i144.photobucket.com/albums/r162/4trax67/Boat%20parts/100_2657.jpg

ULTRA26 # 1
05-29-2007, 04:42 PM
I have CMI's on my HO and I would suggest the Dana system. Ediie make good stuff too but I know for sure that there are no issues with the Dana system install on an HO
John M

Racey
05-29-2007, 04:49 PM
Eddie makes some quality stuff, i don't think he would put it out there with his name on it if it wasn't bitchin. Everything we've ever got from him has been great, and a couple of our customers are running his aluminum manifolds they are working great too.

undertaker
05-29-2007, 04:51 PM
Have you had issues with your CMI'S....just curious...I installed Dana's but was real close to pulling the triggger on the CMI'S.
Undertaker:D

ULTRA26 # 1
05-29-2007, 04:57 PM
Have you had issues with your CMI'S....just curious...I installed Dana's but was real close on pulling the triggger on the CMI'S.
Undertaker:D
No issues at all. The install was a pain in the a**. Spinning a Merc labbed 28at 5050. Huge mid-range gains and 4 mph on the top. The main resson I recommend Dana's is the performance is said to be close, not nearly as pricey, and Dana's install with much less work.
Have you had any luck with the 27?
John M

Wmc
05-29-2007, 04:58 PM
70 mph is the best i ever did. stock 496ho w/ 24p. 4 passagers

ULTRA26 # 1
05-29-2007, 05:00 PM
70 mph is the best i ever did. stock 496ho w/ 24p. 4 passagers
70 is real good for a stock HO with 4 on board. :D

Wmc
05-29-2007, 05:07 PM
70 is real good for a stock HO with 4 on board. :D
the air was cool. i can do 65 any time. maybe i got a good one

ULTRA26 # 1
05-29-2007, 05:16 PM
the air was cool. i can do 65 any time. maybe i got a good one
I've had a few good top speed numbers too, but my HO has CMI's and they help quite a bit.
Hope to see you on the water
John M

Not So Fast
05-29-2007, 06:55 PM
70 mph is the best i ever did. stock 496ho w/ 24p. 4 passagers
With the current ????? :idea: NSF

Wmc
05-29-2007, 07:10 PM
With the current ????? :idea: NSF
67mph this pass weekend at parker

atomickitn
05-29-2007, 08:07 PM
let me help shed some light on this , and this is my 02...... first no 2 motors are the same ,i have installed in the hood of 100+ 496's& ho's, and have yet to have the exact same result most very close, second...we just put a set of eddies on a 27' with muffs and a 24p bravo 1 , still running 4500rpm, however that 4500 is with 9 people and 65+ gals of fuel and the temp was around 100+, my customer asked me if that was right , yep i said , he said should i have had better rpm after all that work , i said that you ran 4200rpm with all the same conditions as you have now soo you picked up 300rpm, and on your speedo you said you picked up 2+mph....ok so...what do you think? he said humm ...you are the tech i guess that is ok and maybe i should see what it does with out all this weight and on a cooler day.... i said there you go..... so either way you go with after market exhaust is going to be better than stock, how much of a gain you get will depend on several things, size of boat type of bottem weather ,water conditions ect ect ect.... ok so my 02 is this go with waht will be best for you and your wallet, either way you wont be disappointed.....and most exhaust kits will take you just a few hours , some more than others... good luck:)

Newcastle
05-29-2007, 11:00 PM
reDECK...I have the same engine, smaller cat by 3', so #'s won't be exactly the same. I was having the same issues, could barely hit 60 with only 2 on board, took 20 seconds to plane, and was only at 4600 or so RPM. Finally a buddy pointed out one of the spark plug wires looked like it was attached properly but actually wasn't. Next time on the water, hit almost 5200 RPM, got outta the whole twice as fast, and hit 68.8 on gps with 3 passengers, 2 coolers, 40 gallons of gas, 100 degree temp headed from the Sandbar to the channel. Cole Trickle has the right idea...I'd venture to say it doesn't need a tune up as much as just find out what's the dealio, maybe bad spark plug or something that doesn't let all 8 run

reDECKulous
05-29-2007, 11:05 PM
Sounds good man. They are going to take a look it tomorrow. Hopefully that is all it is.
Eric

Dana Marine Products
05-30-2007, 07:33 AM
Atomick, I thought those were Dana Manifolds you just put on that 27??

undertaker
05-30-2007, 07:41 AM
No issues at all. The install was a pain in the a**. Spinning a Merc labbed 28at 5050. Huge mid-range gains and 4 mph on the top. The main resson I recommend Dana's is the performance is said to be close, not nearly as pricey, and Dana's install with much less work.
Have you had any luck with the 27?
John M
Thanks....was just curious..:D
I could not turn the 27, 26 seems to be the right prop, but I am having some sensor issues right now boat is in the shop being hooked up to a scanner we will see what they find, hope to have boat back by the weekend.. Once sensor issue is resolved I will try the 27 again just to be sure..

undertaker
05-30-2007, 07:43 AM
No issues at all. The install was a pain in the a**. Spinning a Merc labbed 28at 5050. Huge mid-range gains and 4 mph on the top. The main resson I recommend Dana's is the performance is said to be close, not nearly as pricey, and Dana's install with much less work.
Have you had any luck with the 27?
John M
Thanks....was just curious..:D
I could not turn the 27, 26 seems to be the right prop, but I am having some sensor issues right now boat is in the shop being hooked up to a scanner we will see what they find, hope to have boat back by the weekend.. Once sensor issue is resolved I will try the 27 again just to be sure..

undertaker
05-30-2007, 07:43 AM
No issues at all. The install was a pain in the a**. Spinning a Merc labbed 28at 5050. Huge mid-range gains and 4 mph on the top. The main resson I recommend Dana's is the performance is said to be close, not nearly as pricey, and Dana's install with much less work.
Have you had any luck with the 27?
John M
Thanks....was just curious..:D
I could not turn the 27, 26 seems to be the right prop, but I am having some sensor issues right now boat is in the shop being hooked up to a scanner we will see what they find, hope to have boat back by the weekend.. Once sensor issue is resolved I will try the 27 again just to be sure..

Not So Fast
05-30-2007, 07:59 AM
I've had a few good top speed numbers too, but my HO has CMI's and they help quite a bit.
Hope to see you on the water
John M
John's boat runs exceptionaly well so dont take his as an example for a Magic comparison. The Ultra is a 26', different boat and bottom. You have to stick with apples to apples IMO. NSF PS I guess what atomikn said is what I just said huh??

atomickitn
05-30-2007, 08:03 AM
Atomick, I thought those were Dana Manifolds you just put on that 27??
they were , we also did a set of eddies the set of danas was a lil better :)

Cole Trickle
05-30-2007, 08:24 AM
reDECK...I have the same engine, smaller cat by 3', so #'s won't be exactly the same. I was having the same issues, could barely hit 60 with only 2 on board, took 20 seconds to plane, and was only at 4600 or so RPM. Finally a buddy pointed out one of the spark plug wires looked like it was attached properly but actually wasn't. Next time on the water, hit almost 5200 RPM, got outta the whole twice as fast, and hit 68.8 on gps with 3 passengers, 2 coolers, 40 gallons of gas, 100 degree temp headed from the Sandbar to the channel. Cole Trickle has the right idea...I'd venture to say it doesn't need a tune up as much as just find out what's the dealio, maybe bad spark plug or something that doesn't let all 8 run
Glad to hear you got your problem figured out:)
I think we all knew the MPH you were running wasn't right and the boat is probably about 100X more exciting to drive now!!!:D

Ivan Dan
05-30-2007, 09:42 AM
reDECK...I have the same engine, smaller cat by 3', so #'s won't be exactly the same. I was having the same issues, could barely hit 60 with only 2 on board, took 20 seconds to plane, and was only at 4600 or so RPM. Finally a buddy pointed out one of the spark plug wires looked like it was attached properly but actually wasn't. Next time on the water, hit almost 5200 RPM, got outta the whole twice as fast, and hit 68.8 on gps with 3 passengers, 2 coolers, 40 gallons of gas, 100 degree temp headed from the Sandbar to the channel. Cole Trickle has the right idea...I'd venture to say it doesn't need a tune up as much as just find out what's the dealio, maybe bad spark plug or something that doesn't let all 8 run
Glad to hear its running better Nate. When I drove it I couldn't get it over about 52-55 so I knew something wasn't quite right. Good to hear you got it sorted out.

Newcastle
05-30-2007, 11:05 AM
Glad to hear its running better Nate. When I drove it I couldn't get it over about 52-55 so I knew something wasn't quite right. Good to hear you got it sorted out.
Fo sho...So much more fun to drive now that I don't have to put Jason (the self proclaimed fat kid) up front just to plane!
I'm a moron when it comes to motors

ULTRA26 # 1
05-30-2007, 12:35 PM
John's boat runs exceptionaly well so dont take his as an example for a Magic comparison. The Ultra is a 26', different boat and bottom. You have to stick with apples to apples IMO. NSF PS I guess what atomikn said is what I just said huh??
Bobby,
What you've said is very true. It would be like comparing my boat to the new 22 Daytona, which with an HO and Dana exhaust, runs in the mid 80's.
Definitely not apples to apples as you said.
jm

reDECKulous
06-12-2007, 12:36 PM
After two weeks... I think we have an answer. I was told that the boat is running awesome and it was a problem with the spark plug wire... boat was running on 7 cylinders.

rvrhlic
06-12-2007, 02:32 PM
67mph this pass weekend at parker
Is that on a GPS Speedo?

ULTRA26 # 1
06-12-2007, 02:34 PM
After two weeks... I think we have an answer. I was told that the boat is running awesome and it was a problem with the spark plug wire... boat was running on 7 cylinders.
Great news for sure. The boat should run way better hitting on all eight.
John M

Cole Trickle
06-12-2007, 02:48 PM
Great news for sure. The boat should run way better hitting on all eight.
John M
Cool Deal...Same thing that happend to me over memorial.
It's amazing what that extra cylinder does....I debated smashing my boat into the rocks when I lost 8 mph;):D:devil:

Cole Trickle
06-12-2007, 02:49 PM
Great news for sure. The boat should run way better hitting on all eight.
John M
Cool Deal...Same thing that happend to me over memorial.
It's amazing what that extra cylinder does....I debated smashing my boat into the rocks when I lost 8 mph;):D:devil:

ULTRA26 # 1
06-12-2007, 04:45 PM
Cool Deal...Same thing that happend to me over memorial.
It's amazing what that extra cylinder does....I debated smashing my boat into the rocks when I lost 8 mph;):D:devil:
:D :D

Blueduck
06-12-2007, 05:22 PM
Newcastle what prop are you running?