300 HP NA

kennyj

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What would it take to achieve 300 rwhp on a mercury marauder all natural?
As in money technology and time?
tune,headers.....Then what? Spacers? Cams?
is it even possible, with out meth or nitrous?
 

Dasfinc

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Don't these things have 300 at the crank already?

I can't imagine the loss through the 4R70W makes it impossible to get 18% more out of the engine with more than just basic bolt-ons.
 

kennyj

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Mercury lied. Advertised 302 at the crank... just sales talk. Real World Horse Power........260....on a good day.
 

kennyj

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have to agree on your assesment. been reading these pages for years. No way I say.
 

Dasfinc

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Mercury lied. Advertised 302 at the crank... just sales talk. Real World Horse Power........260....on a good day.
I'm well aware of the difference between rear wheel HP and crank rated HP.

There is a Drivetrain loss (Typically about 18%) from the Automatic transmission, which puts the car about 250/260 at the wheels.

I'd imagine 40rwhp can be gained from a couple of bolt-on's and a Tune. 3 valve S197 motors can, I'd hope 4 valves would.
 

kennyj

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I did coils, tune, gears, cai, sway bars,.... still won't light the tires up. wondering if its time to stop pretending.
 

ilikemtb999

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Those 300whp builds seem pretty basic. This guy just needs some more bolt ons...
 

kennyj

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Wow the hp numbers are even lower than I thought....242 hp stock??
Looks like a 4.6 is too small but drill em out and it can be done
isnt Leo Vampire using some sort of water or meth kit to double down ??
 

rz79

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MM got the 2001 cobra motor, yes? Then let the 4v breeve! Open up that exhaust
 

kennyj

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Rz....agreed. Should order a SW/ Maucat set up call it done.
Was toying with the idea of putting 3 or 4 K into it over winter months.
This thread was sort of a fishing expedition to get input, Hopefully meet some nice folks and hire them to tweek the merc for spring. Zack comes to mind of course. There are others that do excellent work and have some pretty cool inventions. But you have the best suggestion so far...cheaper too!!
 

Dasfinc

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I did coils, tune, gears, cai, sway bars,.... still won't light the tires up. wondering if its time to stop pretending.
Coils really don't do anything on a stock motor, what is the 'tune' (Professionally dyno tuned, or canned tune? If canned, what brand), What brand CAI?, What gear (and who installed it)? And why would a swaybar help your power?

How many miles are on it? basic Maintenance (Plugs, O2's, etc) can make a big difference. And no-name intakes can hurt more than help in some cases...

As already mentioned, Exhaust will make a big difference, as will a professional dyno tune (assuming you just have a canned tune).
 

kennyj

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cai =reinhart
gears 4:10 from sparta installed by dealer
tune(canned) from...DR, Zack, Lidio, and a guy I know
sway bars = power to the pavement...not! snake oil yes
O2= yes
Plugs...3 sets of ngk, 2 sets of oem originals..2 sets of oem replacements
Granettelli...50,000 volt
mileage?? 80K?
The plugs are a looooonnng story.
 

rz79

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My 01 cobra would only run ( w/o a CEL) on motorcraft plugs... Sounds like a similar issue.
 

kennyj

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I have to go varnish the floor. will check back on sunday. bye and thanks to all the good folks out there in screen ville
 

kennyj

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Soo true my eagle vision was extreme fussy bout plugs.
The Merc had weak coils and could only throw a minimal spark over a 30 thousands gap. the coils fixed that and we are now at 55 thousands and climbing
 

Zack

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OP you have no clue what you are talking about.

Id be happy to give you advice, but I guarantee you wont believe it....throw the coils you put in there in the garbage and put the stockers back in.

Once you've done that report back for more advice, or go to mercurymarauder.net and talk to the dozens of owners who have over 300rwhp NA
 

SirMarco

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Exhaust - headers back
A good CAI
Tune by a respected tuner and not some plug in deal you find on eBay.
I can't see you far from 300 HP if not over from just this.

If you want to spend some coin, cam it.
Maybe a little less coin would be a decent TB and intake
 

guspech750

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Gonna throw 3 to 4 thousand at it this winter?



For 3 to 4 thousand, you can just Eaton swap the sucker. Be at 380 to 440 rwhp and call it done.

I'm at 400rwhp 410tq, stock exhaust and full emissions with my Eaton swap. All parts and a dyno tune cost me a cunt hair over $4,000.
 

musclemerc

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Wow the hp numbers are even lower than I thought....242 hp stock??
Looks like a 4.6 is too small but drill em out and it can be done
isnt Leo Vampire using some sort of water or meth kit to double down ??
LeoVampire is running a water system with 3 jets in the lower intake and ALOT of headwork (all done on a flowbench)
 

Mike K

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Gonna throw 3 to 4 thousand at it this winter?



For 3 to 4 thousand, you can just Eaton swap the sucker. Be at 380 to 440 rwhp and call it done.

I'm at 400rwhp 410tq, stock exhaust and full emissions with my Eaton swap. All parts and a dyno tune cost me a cunt hair over $4,000.
This is what I'd do... Spend $1000 on bolt-ons and what are you going to end up with? A power band that's moved up which will likely yield you even less low end torque and a mediocre horsepower gain or supercharge it and get more horsepower and an assload of torque.
 

Jon01

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If you want it to roll the tires put a 3500 converter in it.
You need to get the motor in the power for it to run.
Ford fucked these cars for grunt. Take your motor that makes the least low end torque, stick it in your heaviest car and saddle it with a tight converter and moderate gear.
 

musclemerc

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If you want it to roll the tires put a 3500 converter in it.
You need to get the motor in the power for it to run.
Ford fucked these cars for grunt. Take your motor that makes the least low end torque, stick it in your heaviest car and saddle it with a tight converter and moderate gear.
I couldn't agree with you more! :fy:
 

kennyj

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Thanks everyone. Some good ideas.
I say keep my money local and do the stall and the headers. Then just have some weekend car show fun with it.
If I still have it next year I will take it to chicago and do a custom tune.
 

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