Marine Intake Manifolds

[Rockrz]

Anybody ever install a "Mercruiser Volvo 4.3 MPI 8 Bolt Intake Manifold" on their truck?

I found a decent deal on eBay for about $250 shipped at:
http://cgi.ebay.com/ebaymotors/Mercruiser-Volvo-4-3-MPI-8-Bolt-Intake-Manifold-V6_W0QQitemZ370139528292QQcmdZViewItemQQptZBoat_Pa rts_Accessories_Gear?hash=item370139528292&_trksid=p4506.c0.m245&_trkparms=72%3A727%7C65%3A12%7C39%3A1%7C240%3A1318 #ebayphotohosting

This think should be a direct fit physically, but what all would have
to be done to make it work right with the factory ECM?

[White-V-6-S-Ten]

Why would someone want to put a marine manifold on their truck?
Not tryin to be an a$$ I just dont know, I am trying to learn about it!
Is it a better manifold than the factory?
Is this one alumnium? or cast iorn?
Is the factory one iorn? or what?>

[King_Ice_flash]

The factory one is cast aluminum and uses the injector spider while the marine intake manifold is cast iron and uses upgradable MPFI injectors. It has no EGR capability.

Obviously there are advantages and disadvantages of both.

Take a look through the blown/sprayed section or search for "marine intake." You would be suprised how much information is available. Yes tuning is required. You will need to update the injector flow rate as well as add more fuel in the low-mid range.

[chargedextreme]

i just got done doing the swap on my 2000 s10

[White-V-6-S-Ten]

Why did you do the marine swap on yours?
What was the reason? What kind of gains can you get from it?

[chargedextreme]

im supercharged and needed more fuel and have a built motor it gains 42 hp it has been dyno tested

[12sws27]

Awesome! Good to hear. We need more dyno sheets around this site. When ya gonna post them up? What S/C did you go will again? How much boost you running at the present time? I'm dying to see your set up. You gotta post pics if you can. I love sh!t like this. :D

[12sws27]

Why did you do the marine swap on yours?
What was the reason? What kind of gains can you get from it?
That question was answered by King. You need more fuel to run more boost. You can't get bigger injectors for our fuel system. You can how ever get bigger injector for the marine intake.

[chargedextreme]

powerdyne supercharger. and i will have some dyno sheets up on monday when i go for the first dyno pull on 12lbs then 15lbs and then the big 20lbs lol

[12sws27]

powerdyne supercharger. and i will have some dyno sheets up on monday when i go for the first dyno pull on 12lbs then 15lbs and then the big 20lbs lol
Is it one of the new dynes I've heard talked about? If not I've heard a few incidents where they don't hold up if you spin them to fast. Even the ones rebuilt by 929. Is it the dyne that has the sealed bearings like my Jammer has? I won't ever run over 8psi on mine for fear of it falling apart on me. Well maybe 10 :D IDK. I'm still at 6psi. I'm still just a baby :o

[chargedextreme]

lol i have a bd11a powerdyne supercharger on it not the stock bd600 so it all should be good and i have a screen in my charge pipe so if something does blow up it will not go in the motor

[12sws27]

I wont even pretend I know the difference LOL. I jsut wanna say it just incase. I realy don,t know sh!t about the dyne's but what I've heard from a couple of buddies on here with them. They will more than likely post up tomorrow.

Did you do the intake swap yourself? How long did it take you to do it if you did?

[chargedextreme]

yea i did it all my self it was real easy it took about 3 hours to make the wiring harness and change all the vacume lines very easy swap im going to make the harrness and prob start selling it on the forums

[12sws27]

yea i did it all my self it was real easy it took about 3 hours to make the wiring harness and change all the vacume lines very easy swap im going to make the harrness and prob start selling it on the forums
That would be cool. I wouldn't make up a bunch though. Alot of us S10 guys are cheap bastards :D I'd hate to see you spend your time and money on supplys and it take for every to get it back. If the majority of us were big spenders everybody would have aftermarket performance stuff for our trucks. Just be careful is all I'm saying. Best of luck with it. It would help a lotta guys out.

[chargedextreme]

yea im just saying if they want it i would make it

[D-Caf]

The factory one is cast aluminum and uses the injector spider while the marine intake manifold is cast iron and uses upgradable MPFI injectors. It has no EGR capability.


One correction, the Marine manifold does have EGR capability. That's one nice thing for us in emissions states, you can setup an EGR system with it.

[Rockrz]

One correction, the Marine manifold does have EGR capability. That's one nice thing for us in emissions states, you can setup an EGR system with it.
Only if your vehicle came with EGR from the factory.

My 2003 S10 is so efficient, it didn't come equipped
with an EGR from the factory cause it ain't needed.

[D-Caf]

Only if your vehicle came with EGR from the factory.

My 2003 S10 is so efficient, it didn't come equipped
with an EGR from the factory cause it ain't needed.

True, your lucky, I'm stuck with EGR, but plan on doing the Marine intake (already have one sitting at the house) so I can keep my emissions inspectors happy.

[King_Ice_flash]

Can someone post a picture of where the EGR would mount on the marine intake? The one I saw didn't even look like it had a casting for where it would be machined.

[D-Caf]

Can someone post a picture of where the EGR would mount on the marine intake? The one I saw didn't even look like it had a casting for where it would be machined.

The EGR tube fitting is in the same location as the stock EGR, but there is not internal casted space for the EGR valve. In this case you must use an external EGR valve, route the EGR tube from the exhaust to the external EGR valve, and then from that valve to the EGR intake on the manifold. So not an exact match, but the basic pluming is there.

You can see the intake for the EGR in the picture below. It's where the brass bolt is on the bottom left of the picture (note the lack of EGR valve casting space, just the EGR intake hole):

http://www.s10planet.com/forum/attachment.php?attachmentid=4870&stc=1&d=1207708535

[Rockrz]

If the '01 thru '03 engines don't have an EGR, why can't
this simply be done away with.

Other than emissions laws, of course

[King_Ice_flash]

Emissions laws are the issue. He has a 98, so unless he went with the 2001+ PCM/engine which was not equipped with EGR/AIR, he needs the EGR.

[DiCi21]

so this is a direct bolt on for my 03? only thing i need is a harness made for it?

[King_Ice_flash]

Some fuel line modification, wiring, and tuning, and brackets, and you are ready to go.

[Rockrz]

Emissions laws are the issue. He has a 98, so unless he went with the 2001+ PCM/engine which was not equipped with EGR/AIR, he needs the EGR.
Yeah, but I've seen threads where guys are guttin their cats and installing EGR blocks (removing their EGRs altogether) so I don't think too many guys are concerned about emission laws.

They only apply if you get caught :ouch_125: and all you'd really have to do is play dumb http://bestsmileys.com/clueless/4.gif and offer to put the missing items back on. They'd prolly just write you a ticket since it would be hard to prove you intentionally removed emissions equipment (don't leave any witnesses!)

I know here in my state, all they do for "Emissions Testing" is plug in an OBDII scanner and check for emissions related trouble codes. Most of these guys don't even look under the hood like I was required to do back when I was doing state inspections

[King_Ice_flash]

Since you worked at an emissions testing station, I'm sure you are well aware of what the fines are for tampering with mandatory emissions equipment.

[Rockrz]

Back when I was doing state inspections, there was only visual inspections.

And, if we ran across a car that didn't have something it was supposed to have all we were required to do was flunk the vehicle and put a big black X on the backside of the sticker on the windshield to alert any other state inspectors this vehicle had been flunked.

Oh, and we got to charge for the inspection anyway...and we issued them a rejection receipt explaining why the car flunked, and also stating they could get their inspection sticker at no additional charge within 15 days if they fixed the problem.

I don't recall any of the State Troopers talking about a program for busting people that had removed emissions equipment from their vehicle.

Seeing how the government needs mo money now, I'm sure they require inspectors to notify somebody at the Federal level on this now.

[87wildside]

In NJ they used to impound for removing emissions equipment. I was busted for no cat at a roadside check. Then the vehicle had to be towed from the yard and taken to a certified emissions repair shop to have the work performed. Turned into a very expensive week.

[Rockrz]

Yep, it's best to simply hollow out yer cat cause you can pass a sniffer test with no cat pretty easy if all else is working right.

[Rockrz]

Actually, I never jack with the emissions cause it's the law abidin thang to do....but I know, I know...we're all being forced to "go green" even though it's not mankind that is causing "climate change" (actually, I'm lookin to Increase my carbon footprint so I can be more like Algore!)

Soon, they will be putting a big honkin tax on all internal combustion engines so we all need to start making alot more money so we can continue to drive our trucks.

OR, we can all get an electric scooter and put an S10 badge on it :hypnotize
and remember the good 'ol days when we could drive our trucks.

I'm betting this will happen in less than 10 years...
So, enjoy the S10 while you can!

[King_Ice_flash]

What, I am running e85 in mine.

[Rockrz]

What, I am running e85 in mine.
e85 is very un-friendly to the peoples of the earth... (if one was inclined to concern ones self with this type of thing)

It uses up several gallons of fresh water to produce contributing to the increasing problem of water shortages, it's removing more corn from the world wide food market causing more starvation in third world countries, and it's been scientifically proven to be about 35% less efficient than gasoline which means you're gonna have to burn more of it making it more expensive than gas to run.

Typical government deal to mandate stuff without getting the facts first.

In fact, I think it was the state of Washington or Oregon that had their entire state legislature acknowledge that e85 is a scam and should be done away with in their state! As soon as they figure out how to get by without Federal money for their roads, I'd imagine they do away with it....but the government is stickin it in the backside with no lubrication
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[King_Ice_flash]

That's wrong. I am seeing about a 16% difference between e85 and e10. If you consider the 8% increase in fuel mileage I got with PCM tuning from the factory, the e85 mileage isn't very far off now, is it. There is about 20% difference in energy content between gasoline and e85. So if you are seeing a 35% decrease in efficiency, you have other issues.

And like the production of gasoline has no global economic/environmental impact either.

[Rockrz]

And like the production of gasoline has no global economic/environmental impact either.
This is one of the commonly used liberal left talking points...that cannot be proven scientifically

There's alot of scientists that are publishing info from tests and research proving that gasoline is still the most efficient fuel.

If you're actually interested in studying this, contact Ed Wallace at http://www.InsideAutomotive.com and he can provide you with scientific research that proves e85 is not as efficient as gasoline.
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[rabidbandit]

yeah...but it's loads cheaper than CAM2 and it's octane rating is 100...hell E100 is 110! It might not have the BTU equivalent of CAM2 or premium gasoline...but depending on tuning and/or engine build (F/I or high compression N/A) as KIF mentioned, you can get pretty close.....oh....did I mention cheaper ($7gal Cam2....vs. $1.45gal for E85:D) As far as composition...I'm not trying to be a smart ass...but, ever heard of Cellulosic ethanol, it's produced from wood, grasses, sawdust, bio-waste/refuse and non-edible parts of plants. Cellulosic crops such as switchgrass and others, can provide a much better net energy production than corn, producing over five times as much energy as the total used to produce the crop and convert it to fuel. Closed-loop plants like the ones near my hometown uses enzymes and bacteria (yeast) and combining it with manure to ferment the ethanol....making it much more enviornmentaly friendly and using less water which would normally be wasted in the processing phase;)

It's not all bad...ethanol plants just need refinment...just as diesel fuel has evolved...which has the Highest BTU for it's weight...but has been kicked in the balls repeatedly (high sulphur 15k+ppm...lots of smoke...to ULSD less than 500ppm...very little smoke) but can now meet 50 state emissions with catylist reductions (Urea/DPF).:D Another neat prospect...diesel, when a catylist is present....has lower NO2 levels and overall emissions than an equivalent gasoline engine of simliar displacement....and it's cheaper and easier to refine and uses waayy less energy arriving to it's final product!

[chargedextreme]

i dont have a smog pump any more and dont have any egr system in my 2000

[97blazer13]

I am looking to turbo my 97 and was wondering if this marine intake manifold is bolt on. Will I need an older lower intake manifold? How much work needs to be done to make everything work correctly, aside from the injector wiring, fuel lines and EGR hoses? Any help offered will be appreciated.

[King_Ice_flash]

Yes, it will work on the 97 heads.

[12sws27]

I am looking to turbo my 97 and was wondering if this marine intake manifold is bolt on. Will I need an older lower intake manifold? How much work needs to be done to make everything work correctly, aside from the injector wiring, fuel lines and EGR hoses? Any help offered will be appreciated.
Check out these links.

http://www.s-seriesforum.com/forum/showthread.php?t=81022&page=1&pp=10

http://blazerforum.com/forum/showthread.php?t=13610

http://www.fullthrottlev6.com/forums/showthread.php?t=50198

[97blazer13]

Thanks, These are a huge help.

[Jay-Sliver]

I have a wiring diagram around here for wiring your individual injectors too. I'll see if I can find it and scan it and post it.

Jay