upper/lower intake porting?

[chief455]

Anyone have first hand data/results from doing this? Even without porting the heads?

Application N/A or S/C

thanks

[FastMerc]

Mine was done at Lidios shop aswell as the heads.

[Joe Walsh]

I had my upper/lower extrude honed, but it went on my new big bore engine.
Couldn't give you dyno results for just that mod.

I will say that the ports were smooth and shiny and slightly enlarged, as I had to port match the head's intakes and the hard plastic intake-to-head gaskets.

[chief455]

I'm thinking, with some radius and smoothing, port matching and an upper intake spacer - it could help, and should not hurt performance....talking on an otherwise stock engine with CAI and headers/exhaust.
thoughts?

[Zack]

Waste of Time IMHO.

If you want any type of intake work have na svt do it.

[cougar9150]

Waste of Time IMHO.

If you want any type of intake work have na svt do it.

+1 on NA SVT and Landy can do a kick ass job on one. Landy saw decent gains (30+hp IIRCC) on a blown car along with the ones he ported for other people. I got one from him in my garage that will be bolted on when I finally finish my SC kit.

[chief455]

Waste of Time IMHO.

If you want any type of intake work have na svt do it.
OK, and on the SVT forum, he states:

"On a stock longblock engine the following mods will do little-to-nothing to increase power: throttle bodies, CAIs/RAIs, intake spacers and shorty headers"
I'll see if he thinks it's worth anything on my set up
thanks, you guys are saving me $$:beer:

[Vortech347]

OK, and on the SVT forum, he states:

"On a stock longblock engine the following mods will do little-to-nothing to increase power: throttle bodies, CAIs/RAIs, intake spacers and shorty headers"
I'll see if he thinks it's worth anything on my set up
thanks, you guys are saving me $$:beer:

Now you get why so many said "boost the *****!"

[chief455]

Now you get why so many said "boost the *****!"
Yup. I got it from the start. Just going down the bolt on list - looks like I'm almost done, which will keep $$ in my pocket :beer:

[whitey]

I disagree with the cai, i think it adds a enough hp to be worth it, the one mod listed that i do agree that did pretty much nothing was the intake spacer. I bought mine used for $25, and would have been extremely dissatisfied if i paid for it new....~$100. The others i have not noticed much talk about for na, so they cant do much at all.

[LANDY]

For the money going FI is the best option. You'll go broke trying to go fast n/a. However I have had good gains on the intakes I have done.

[chief455]

For the money going FI is the best option. You'll go broke trying to go fast n/a. However I have had good gains on the intakes I have done.
For sure FI is the best dollar/power investment to make a 4.6 go FAST in a Marauder.

My goal is less amitious - do the best retun on investment external bolt on mods and leave the car N/A. I do not want to put power adders on this car as a personal preference from my experiences.

No quest for low ET or high dyno numbers - just a well built and tuned, improved handling driver Marauder with more spirit than stock.
With the mod list in my sig, I'll only be looking at a stall convertor (because I love them on the street) and headers/exhaust when $3k falls in my lap.

My wish list decreased quite a bit with member inut on each topic I questioned - saving me from wasting money :beer:

[RacerX]

My ported intakes have about a 20hp gain NA.

Before:

http://www.mercurymarauder.net/gallery/data/579/medium/IMG_0651.jpg (http://javascript<b></b>:;)

After:

http://www.mercurymarauder.net/gallery/data/579/medium/IMG_0825a.jpg (http://javascript<b></b>:;)

http://www.mercurymarauder.net/gallery/data/579/medium/IMG_0827a.jpg (http://javascript<b></b>:;)

http://www.mercurymarauder.net/gallery/data/579/medium/IMG_0549.JPG (http://javascript%3cb%3e%3c/b%3E:;)

http://www.mercurymarauder.net/gallery/data/579/medium/IMG_0838a.jpg (http://javascript<b></b>:;)

[MustangMoser]

RacerX do you have any dyno graphs before/after? What do u charge to do this and what's the down time? Oh, and u have great taste in beer, Boston Ale....yum

[na svt]

No ported, stock runner length intake will provide a 20rwhp gain, n/a or FI....ever. I've ported more of these than anyone and can tell you that there is not 20rwhp or even 20fwhp to be gained with a ported intake.

A 10" short runner may add 20rwhp but only if the engine is cammed for upper RPM hp.

With that, if the intake is installed on a stock, untuned engine and it is tuned after the install a 20rwhp gain is possible. However, putting a ported intake on a tuned car will not result in a 20rwhp gain.

[Zack]

^^^what Todd said

[RacerX]

Dumb a$$es! Try reading next time. "My ported intakes have about a 20hp gain NA."

Where does it say RWHP??? I have complete access to a dyno any time I like. I do my own tuning and run the dyno myself.

I respect you Todd, but, that last post is 4 months old and you seemed to hunt it down just to kill it.

[ctrlraven]

Dumb a$$es! Try reading next time. "My ported intakes have about a 20hp gain NA."

Where does it say RWHP??? I have complete access to a dyno any time I like. I do my own tuning and run the dyno myself.

I respect you Todd, but, that last post is 4 months old and you seemed to hunt it down just to kill it.

http://cdn.memegenerator.net/instances/500x/44320851.jpg

[massacre]

:lovies:I believe you Bill....

[Jokerzl]

Ya I can vouch for helping out big time


Sent from my iPhone using Tapatalk

[na svt]

Dumb a$$es! Try reading next time. "My ported intakes have about a 20hp gain NA."

a 20hp gain is still 16 at the wheels and that ain't happening either. Hell, that's what my short runners provide. These sites refer to hp at the rear wheels, not the flywheel.

As me hunting this thread down, nah. I just didn't pay attention o how old it was.

[Baconbit]

How much would it cost to get the throttle body ported and upper intake port matched? Also what about the lower intake?

[na svt]

Porting a tb makes it shiny but adds no power. This is also true for the upper as there are no mods you can make to it that will increase power or performance.

[Jokerzl]

Na Svt im not saying your right nor am I saying your wrong

But to make sure you know what your talking about. Just keep things in check.

What you should of said is you can't physically port a throttle body without changing the blade. No matter what you do before or in front of the blade matter because it's going through the same size opening regardless.

When you smooth out the inside of a throttle body or plenum or whatever you reduce turbulence which increases the efficiency of the air which keeps heat down which in turn creates horsepower.

There is also the theory called the Venturi effect in which "porting" a throttle body in such a way you increase or mimic blade size increase.

There are some other tricks of the trade that I have learned.


Sent from my iPhone using Tapatalk

[MOTOWN]

I have yet to see anyone port a T/B and yield any gain whatsoever because N/A svt called it correctly, porting a T/B does not gain any H.P.

[Jokerzl]

You just did it yourself

You can't port a throttle body without changing the throttle body blade.

If you port a throttle body and change the blade it will make power as your increasing the cfm . You are also increasing the the diameter of the throttle body. Hence the term port. To open up.




Sent from my iPhone using Tapatalk

[MOTOWN]

You just did it yourself

You can't port a throttle body without changing the throttle body blade.

If you port a throttle body and change the blade it will make power as your increasing the cfm . You are also increasing the the diameter of the throttle body. Hence the term port. To open up.




Sent from my iPhone using Tapatalk

If anyone is simple enuff to take the time to port a throttle body, and then go thru the trouble of buying bigger throttle blades, ill show you a fool, who is tripping over dollars to pick up pennies!:shake:

Its far more cost effective to just buy an Accufab, or a Dragon and be done with it.

[na svt]

Here's how I'll state it, "porting at stock TB will add no power." Also, a larger TB will add no power to a stock or even a cammed, n/a engine. I know because I did a lot of testing with my Mach 1 and have also seen many people install larger TBs and not gain any power.

The only way an engine will gain from a higher flowing TB is when the engine demands more air than what can flow thru the existing TB. With that, a stock cube, n/a, engine will never demand more air than what a stock TB can provide.

[na svt]

If you port a throttle body and change the blade it will make power as your increasing the cfm.

This is not true, the TBs potential to increase power will be greater, but unless the engine demands more air the power will remain the same.

[lefeur]

From this thread, it sounds like the ported short runner is the *****. Even on a stock motor. The images of the dyno runs have been deleted but it sounded like a 30rwhp gain on a stock motor with some exhaust mods.


http://www.mercurymarauder.net/forums/showthread.php?t=53264


Did it turn out that it was not as good as claimed?

[MOTOWN]

From this thread, it sounds like the ported short runner is the *****. Even on a stock motor. The images of the dyno runs have been deleted but it sounded like a 30rwhp gain on a stock motor with some exhaust mods.


http://www.mercurymarauder.net/forums/showthread.php?t=53264


Did it turn out that it was not as good as claimed?

Dont believe the "HYPE" not going to happen , unless lightning strikes!:bs:

[Embassy]

Here's an older thread on this subject.

http://www.mercurymarauder.net/forums/showthread.php?t=17584

I now have FordNut's ported and polished upper/lower plenum on my MM.

[na svt]

it provided a 30rwhp gain near 7000rpm, peak gain was not close to that. Also, the short runner takes away power from an area of the powerband that the Marauder requires. I'm not a fan of the short runners for a heavy, automatic transmission car.