Smooth out Heads or not?

97redgt · April 3rd, 2008, 01:59 PM

I have a set of 04 pi heads with 25k on em and they have all new valve seals and were steam cleaned. The intake and exhaust ports seem to have rough ports i guess from the factory(like a bad cats tounge). Would it be bad to take a low grit sand paper and smooth these things out? I not going crazy and not reshaping the ports or anything like that. Just smoothing them out to where my fingers will reach. I could get any left over shavings with a shop vac so not worried about that. Just wondering if it would be a bad thing at all.

mpboy · April 3rd, 2008, 02:11 PM

i would just leave them, you can really mess up in that area of the head, if there extra heads i would just take them and get them P&P'd

acmillr · April 3rd, 2008, 02:34 PM

It won't hurt to smooth the exhaust side of the runners. However, don't smooth the intake side.

ZoomZoomMFer · April 3rd, 2008, 02:36 PM

sorry a little off topic but did you get a quote on those heads AC?

acmillr · April 3rd, 2008, 02:36 PM

Originally Posted by 98SilverStang

sorry a little off topic but did you get a quote on those heads AC?

Yeah, I'll call you tonight. I think we're gonna go with a set up similar to mine.

ZoomZoomMFer · April 3rd, 2008, 02:37 PM

ok you gonna have your friend do em?

ZoomZoomMFer · April 3rd, 2008, 02:44 PM

and ac is ur pm inbox open? can you accept pm's?

sorry for the threadjacking

acmillr · April 3rd, 2008, 02:45 PM

Originally Posted by 98SilverStang

ok you gonna have your friend do em?

No, I'll talk to you later.

Originally Posted by 98SilverStang

and ac is ur pm inbox open? can you accept pm's?

sorry for the threadjacking

Yes

ZoomZoomMFer · April 3rd, 2008, 02:48 PM

pm sent

03_StangGuy · April 3rd, 2008, 05:40 PM

Originally Posted by acmillr

It won't hurt to smooth the exhaust side of the runners. However, don't smooth the intake side.

Why dont you wanna smooth out the intake side would that have bigger gains?

I know they make sanding kits for a drill or rotary tool to do your own port and polish.

acmillr · April 3rd, 2008, 05:47 PM

Originally Posted by 03_StangGuy

Why dont you wanna smooth out the intake side would that have bigger gains?

I know they make sanding kits for a drill or rotary tool to do your own port and polish.

Smoothing the intake runners will nothing but harm to your a/f mixture. You need some tumble effect to get the liquid fuel to mix well.

andres0286 · April 3rd, 2008, 05:49 PM

You have to be carefull when smoothing the intake side. It has to be rough for a good air/fuel mixture. Too smooth and your mixture is going to be rich as hell. This should be left to a professional.

With the exhaust side you wont have problems if you smooth it.

03_StangGuy · April 3rd, 2008, 07:23 PM

Thanx guys

MustangMatt96GT · April 3rd, 2008, 07:50 PM

Originally Posted by andres0286

You have to be carefull when smoothing the intake side. It has to be rough for a good air/fuel mixture. Too smooth and your mixture is going to be rich as hell. This should be left to a professional.

With the exhaust side you wont have problems if you smooth it.

Im no head porter, but wouldnt it make it run lean? more air same fuel?

andres0286 · April 3rd, 2008, 08:59 PM

Originally Posted by MustangMatt96GT

Im no head porter, but wouldnt it make it run lean? more air same fuel?

It wont be same fuel since you wont have ridges to hold some of the fuel for the mixture

April 3rd, 2008, 01:59 PM	#1
97redgt Regular Join Date: Apr 2007 Location: Quakertown, PA Posts: 99 iTrader: 0 reviews	Smooth out Heads or not? I have a set of 04 pi heads with 25k on em and they have all new valve seals and were steam cleaned. The intake and exhaust ports seem to have rough ports i guess from the factory(like a bad cats tounge). Would it be bad to take a low grit sand paper and smooth these things out? I not going crazy and not reshaping the ports or anything like that. Just smoothing them out to where my fingers will reach. I could get any left over shavings with a shop vac so not worried about that. Just wondering if it would be a bad thing at all. __________________ steeda tri-ax, pypes catback & o/r x, BBK shorties, K&N cai, Full PI Swap, pro-m 80mm maf, 75mm tb and c&l plenum, steeda ud's, screamin demon cp's and ford racing 9mm wires, fox 4cyl front springs 260rwhp 290rwtq

April 3rd, 2008, 02:34 PM	#3
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,120 iTrader: 2 reviews	It won't hurt to smooth the exhaust side of the runners. However, don't smooth the intake side. __________________

April 3rd, 2008, 02:36 PM	#4
ZoomZoomMFer zippeewannabee 06' Mazda Speed6 Join Date: Jul 2007 Location: Orlando, Florida Posts: 3,205 iTrader: 17 reviews	sorry a little off topic but did you get a quote on those heads AC? __________________ Cobb SRI \| Eibach ProKit \| JBR Short Shift Plate \| JBR Rear Motor Mount

April 3rd, 2008, 02:37 PM	#6
ZoomZoomMFer zippeewannabee 06' Mazda Speed6 Join Date: Jul 2007 Location: Orlando, Florida Posts: 3,205 iTrader: 17 reviews	ok you gonna have your friend do em? __________________ Cobb SRI \| Eibach ProKit \| JBR Short Shift Plate \| JBR Rear Motor Mount

April 3rd, 2008, 02:44 PM	#7
ZoomZoomMFer zippeewannabee 06' Mazda Speed6 Join Date: Jul 2007 Location: Orlando, Florida Posts: 3,205 iTrader: 17 reviews	and ac is ur pm inbox open? can you accept pm's? sorry for the threadjacking __________________ Cobb SRI \| Eibach ProKit \| JBR Short Shift Plate \| JBR Rear Motor Mount

April 3rd, 2008, 02:48 PM	#9
ZoomZoomMFer zippeewannabee 06' Mazda Speed6 Join Date: Jul 2007 Location: Orlando, Florida Posts: 3,205 iTrader: 17 reviews	pm sent __________________ Cobb SRI \| Eibach ProKit \| JBR Short Shift Plate \| JBR Rear Motor Mount

April 3rd, 2008, 05:49 PM	#12
andres0286 Hardcore Enthusiast 2002 Mustang GT Join Date: Mar 2008 Location: Guaynabo, Puerto Rico Posts: 1,027 iTrader: 1 reviews	You have to be carefull when smoothing the intake side. It has to be rough for a good air/fuel mixture. Too smooth and your mixture is going to be rich as hell. This should be left to a professional. With the exhaust side you wont have problems if you smooth it. __________________ 2002 GT SOLD 2003 Mustang GT Cobra Clone SOLD Procharged @ 8psi 458 rwhp Mods in Garage

April 3rd, 2008, 07:23 PM	#13
03_StangGuy I Post Entirely Way Too Much Blown 03 GT Join Date: Jun 2007 Location: Long Island NY Posts: 6,238 iTrader: 0 reviews	Thanx guys

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