3000GT Head Porting

[paulme33]

right, address to send my heads too...

[superjervis]

wrong tools,you need a pencil grinder and maybe a sandpaper fitting for it...it's faster and neater

[crnogor]

Hey , Man , put the fucking gougles ! Y newer know when Y can get a litle , tiny fragment to Y'r eye ! Ask me !

[da1stegr]

Haters think they know a thing or two about how a motor flows. they don't. a mild port & polish will defenitely help burn the gas more efficently as the 5 angle valve job (polishing cubustion chamber) will decrease detonation and lower compression which some may think is bad but if you had a brain then you'd know that lowering the compression is actually good for a turbocharged motor. Don't bash a kid for trying and scince when is any1 perfect. haters' get a life & stop hating .Good job kid :)

[HunterCO1]

Somebody forgot to tell this dipshit polishing the combustion chamber does nothing and they also forgot to tell him how to tear drop the guides. My guess is the performance gain was very minimal and I am sure a dyno would show that.

[JulianVR4]

@HunterCO1

Actually, the combustion chamber on these engines are full of casting flaws. Pits and slag are abundant.

[NoobiiPower]

Only 15 more ports to go !

[katona00785]

it never started again :) so he bought a new one :)

[Sicknowledge]

Grinding away all the metal from the cumbustion camber just lowered your compression.. Live and you learn...

[powerviking]

I spent about 2 weeks after work porting my TW heads. Time well spent!

[twodeadpoets]

S'il avait couru ou non après, vous êtes un homme courageux que moi!

[123vortec]

123voretc.......

[parrowman]

nice shirt

[itscody317]

look at this bimbo portin and such

[1355550]

EYE PROTECTION!! Come on, you only got two of them.

Not putting you down (doing it yourself is always fun) but you not only need the right equiptment to do this but need to know where and how much to port, just grinding on things and making them bigger in general can reduce power. Hope you shaved your heads as all the grinding in the CC lowered your compression.

Not one ot those tools you used has anything to do with porting.

[RednekDude15]

ugliest shirt ever

[bigbollocks69]

play some Benny hill music over the top of the fast bits :)

[MVthis]

wat a tweeker leve the meth alone

[ylism]

I am glad your having fun my friend. That looks to be very time consuming work for the power to be gained. Nothing in life is free, as the saying goes. We have done some porting on our heads, and know it takes a good eye and steady hands. making sure to take measurements from one port to the next. making & using templates. to keep them close as can be. It's also a good thing being a welder. That way mistakes can be fixed if things go to far. Or a broken head core. Best ,yl

[TheKeyboardKowboy]

2:52 I bet the ladies love him.

[Corkadder]

that is the worst shit i have ever seen !!

[doc289]

But you have to be careful not to touch the valve seats.

Or the valve seats have to be refaced.

[240SSONLY]

this guy is old school.... chopsticks.... nice. he definitely is meticulous with what hes got

[frogy3623]

Thank's for comments, bads or not. i'm not a pro of port matching, so i just love the sound of my engine and the power it develop. i have not built a drag engine ! if you want to make a job like this, be carefull, take you time and see a lot of videos.

so, i installed a water to air setup with 2 intercoolers 450CFM. i will run a Vi-pec ECU and i hope the car will be tuned on the dyno before jully of this year. i will let you know how HP and torque the car develop without methanol injection.

[captaingowa1]

@frogy3623

Thanks for sharing! One question.. Did the cylinder head have any issues with valves seating properly after polishing the combustion chamber?

[calistofox]

4:05 ummm does that head worked at all? me thinks nottttt

[bmaysS01]

You don't need anything more then a dremel tool for a mild port and polish, and it will get you 5 HP. You don't need a flow bench becuase the changes won't register anyway. Combustion chamber work helps with detonation more then most people would expect.

[MidshipExpress]

Be honest, admit you have no idea what your talking about and go comment on like, Lady Gaga's latest video or something.

[bmaysS01]

Match the port, intake, and gasket. Remove sharp edges and chanfer the valve guides. A mirror finish in the combustion chamber reflects heat.

People have been doing this for 80 years.

So you send all your parts to a CNC shop, good for you. Enjoy bolting it together.

[MidshipExpress]

You have no idea what your talking about, you say small changes don't "register" on a flow bench. You clearly havn't ever been near a flow bench in your life, and definatly don't know what your talking about by the list you just gave.

[bmaysS01]

There you go again with your fancy tools. Ya, i suppose you can measure tiny changes changes with a ultrasonic flow meter and laptop a computer. Most people still use a ball in a glass tube.

Your the kind of person that spazzes out when you see someone match connecting rods with a file.

[1986z28owner]

Most? No. Most high perf machine shops have a computerized flow bench...

[dimman77]

@bmaysS01

Nobody mirror finishes anymore, and it was a bunch of water-filled glass tubes.  The flowbench does to the manometers what the CNC machine does to the Dremel (or air-powered die grinder). Takes all the tedious boring work out of it (math in the case of flow numbers). Less chance of operator error, too. It's called progress.

[mokranjac]

LOL,,,This is just wasting a time and damageing head

[quickboat22]

Talking about doing it the hard way....

[kevrs2]

it would be interesting to see how much it is down on power after his handy work ROTFLMAO

[antrax925]

You have to use FLOW BENCH when porting the CYLINDER HEAD , if you dont how do you know what you've gained?!?! THINK ABOUT IT!!!!

[wackedoutdude]

Totally true mate. Also its not about hoggin it out its to do we air speed. He aint even protected the valve seat im glad he aint got an angle grinder lol. Just because youve got a monkey wrench it dont mean your a mechanic lol.

[Rote70SS]

I totally agree, especially when going for max air velocity and flow, but every type of head out there has known issues that a mild P&P will correct. SBC 492 casting for example. Match the I port opening to a standard gasket (Felpro for example), and taper into the throat of the port, clean up the short side radius and casting flash, polish the bowl and valve stem area, and finish the port to about 80 grit. Gasket match the exhaust port, same bowl work as I port, and polish to 400 grit.

[Rote70SS]

Polish the chamber and clean up the flash around the spark plug, remove all sharp edges to reduce hot spots, then check the volume of the chamber (valves installed) and get them as close as possible to each other. Get your heads shaved if you need to decrease volume afterward, get your valve job, CAREFULLY go over them again, and Voila, a mild P&P and more power.  I have never done a 3000GT head, but they have to have known issues in some areas. Fix those issues, don't go overboard...

[Rote70SS]

And you've got more power. I don't know how much experience this guy has, but if all he's doing is a mild P&P, he should be golden. I can't see what he's doing to shape the port or how much material he's removing. I might think differently if I could. Point is, you don't need a flow bench if you know your product and are just correcting known issues and doing mild cleanup work.

[MrGTR1988]

the man is a big pro

[joe0374]

It would be nice to know what he was saying here and to describe what he was doing ???

[DrC20NE]

3:15-5:11 Wrong job...that's one brutal compression ratio lowering!

And valve lapping is extreme brutal too!

[riflemanjim]

valve lapping is fine dont go overboard just check for loe spots

[craigm4ximus]

i guesing he will have the head skimmed so compression ratio wont be a problem.

[zaf355]

sorry i mean to say look at the state of them valve seats

[zaf355]

why doesnt he just pay some one and have done properly. just at the state of them valve seats.

[burns985]

Can anybody tell me, how many horse-power can increase all this job ?

[30GB]

close to about 5hp or so or more

[burns985]

DO you think its worth doing all this for 5 hp? or is there any other benefit of porting & polishing head ?

[30GB]

i meant per cylinder......

[burns985]

aha ! So that means around 20hp by all this job ? Thats quite good then.

[GEARHEADGUY92]

smoother performance and gain better airflow

[dimman77]

@burns985

This is a turbo motor though, so any small gains are basically 'multiplied' by the density increase of the air. Figure it as a small percentage increase of airflow, but given what some of his mods sound like (standalone ECU, air-water intercoolers which could be chilled) it will likely be a lot more than a 5hp gain. Also smoothing things in the combustion chamber can reduce hot spots which can cause detonation, so he may be gaining a little reliability too,

[burns985]

@dimman77 TNX a lot for explanation dimman. Respect.

[bansheeboi2000]

an engine is basically an air pump. the better flow better engine performance

[OubaDubaTuba]

Nice work, fantastic attention to detail. It's good to see there are still some people in France who enjoy working with machinery and do it well.

[cuico345]

BANG=Horses or less pollution

[revinant99]

polishing around valves and the general chamber area as previously mentioned allows air/fuel to flow better. But horsepower comes from the big BANG that occurs next and polished chambers allow a more even and efficient Flame Front meaning more fuel and air are more efficiently burned equally a bigger BANG.; Bang = Horses.

[JapaLoko11]

nossss com esta cara d Pateta só deve faze merda...kkkk

[Kenny9596]

he could really mess up his valve seat with that drill

[KONGONTOWER]

the reason he does around the valve area is not only to make sure that the valve sits flush, it also allows the air and exhaust to flow smoothly so there is no uneven surfaces hindering the flow. And it looks nicer even though once in the car you cant see it.

[txtrcr]

im not talking about the intake and exhaust ports, i know those need to be smooth. Im refering to the areas around the spark plug tip and the valves, does it really make a difference to smooth those out as well?

[dhrdan]

You mean does it matter that the valves sit 100 percent flush again the head. Yes, yes it does.

[txtrcr]

lol, nevermind

[txtrcr]

I thought the idea behind porting and polishing a head was to increase air/fuel flow into the combustion chamber. The shiny combustion chamber wont make a difference or am i incorrect?

[mattmopar440]

yeah mostly shiny means fresh metal which in term is smother so better air flow

[dhrdan]

It does increase the ability of Air/Fuel to flow into the chamber, so the smoother the surface the better. In a perfect world, they should be as smooth as glass.

[dk47studios]

man i did this on my e30 and got about 15HP, but this guy does such a great job, i thing it would give like 20 to 25HP increase.

i wish he was in south afrika lol

[Goetia78]

.....and for some reason the car never ran right again....

[frogy3623]

lol my car run fine :)

[Goetia78]

Dude, I've done cylinder head work for years and I cringed while watching you or whoever it was hacking at that head.

[marek0086]

HAHA!... poor french bastard.

[7caesar7]

Wow, Bro you are the best, working without eyes protections. ...........

[upbeatmantis86]

@7caesar7 Welcome to the third world.. cheap labor everywhere..

[widter]

I wonder if the Valve seats are strong enough when he slims them down to fit another Valve?

[ohloody]

i think the only thing hard about mechanics is putting everything back together.

[twiztidpurpose]

This is where people often damage their heads are they are not aware of the location of water jeckets in the head, or where they can remove material and how much to safely take out with compromising the structural integrity. Certainly takes practice, patience, and some balls to do it yourself.

[naturalyshocked]

hmmmmm, ever thouged how early F1 and many other old old time tuners did, like alfa, ferrari, etc, etc, etc, i lapped my valves also myself once, but i just wanted to know how it's done, bought tools and did it, the engine ran fine.

[twiztidpurpose]

If you are just looiking to build a daily driver with i/h/e then starting with 150 grit should do fine, finishing with 220. The idea in this process is to smooth out the runners to increase turbulence, but not to open the head too much and loose volumetric efficiency. For those going with a turbo or some larger cams, you may want to match the heads to the manifolds. This is called gasket matching. Use the gasket like a stencil and open up the intake and exhaust runners to match the manifolds.

[Frostman182]

Although I agree with almost all of what you have said in your three posts, there is one thing I do not. Opening up the intake runners is a good idea, yes. How ever, making the runners smooth will decrease turbulence. You want turbulence in the intake to help atomize the full better. Better fuel atomization = better and more consistent burn and reduces hot spots in the combustion chamber which also reduce chances of pre detonation.

[twiztidpurpose]

It really depends on what your head is being ported for. Natural aspiration. Turbo. Nitrous. Daily driver. Dyvo queen. Track only. Just looking to help flow, just pick up a dremel and some sanding rolls and smooth out the runners. Just like you would sand wood. Start with rough (80 grit) to remove the rougher notches in the head. Then move on to a 150 grit to lay a good foundation for what the head should flow like.

[accordv6er]

if i practice on a like lawnmower engine and other like small engines, could i do a decent job on a miata head? simply, how hard is it get a little more power out of the ports. i'm a mechanic, i can do a valve job, but never tried a port polish.

[valenzuela]

fuck that he's porting the valve seats too ur an asshole buddy,

[dowserdude]

i'm glad this dude, aint my dentist!!

[xtremech]

Damn there sausage fingers,still workin on those same heads?Lookin for water huh...Holy fuckin sprinkler system!!

[bajanboyhood]

Thats a gtti head

[blacdout96]

As much work as I do on my cars, or anybodies car, I would never port or heads or intakes, its better to be left to proffesionals. you can open heads up and ruin the flow, also mismatching the intake or opening it up too much so the gasket shows can also ruin all that work. Polishing is another thing, but still should be left ot proffesionals in more appropriate shirts.

[sataraid]

Im curious. How much material did you take off the combustion chamber of the head?? What was the compression ratio prior to and after P&P. The intake side looks very good, very even. Did you flow test afterwards??

[Marvosa]

hahaha id love to hear an oops

[eloidor]

O.k. did it work when you put it together.

post a vid of the engine running and the specs after porting.

thanks!!!

[ONEQUICKVR4]

ok, the camera is making me dizzy

[RIGMON]

mora da ide ide... ORE

[frogy3623]

désolé accentboy182, je ne suis pas du forum civic club quebec.

thank's for all comments.

[accentboy182]

est tu froggy sur le clubcivicquebec??

[accentboy182]

nice shirt

[350vroom]

haha, looks like along with doin his own porting he also likes to make his own shirts, haha

[artofwheels]

top video! 5 star

[Plassi008]

Der sollte lieber ein Buch lesen als den schönen Zylinderkopf zu versauen. Sehr schlecht gemacht. Kanäle poliert man nicht!

[frogy3623]

i know it is not specially the best way to go in some points,but i made it by myself and i'm happy with the result.the engine is runing great and produce a good power.the project is just to run great with TD04HL15G, smics and water injection. i think we all need to respect all the work made by people that are not specialized on head porting. people who modify heads know it's not that easy ! so discussing about bad-good points of porting ok, but when posing bads comments, explain why !

[sergiomarcarroyo]

this mesaje is for hondanutbar:

how many engines did u build?u fuk off stupid azz ur just a mechanic copying that other perosn did so ur a mechanic not abuilder that the big mistake that mechanics are taking advantaje now.u r not doing big stuff

[blumpher]

get a compressor and die grinder...it's much easier! and the tools last better due to the higher rpm.Looks nice...proof of the npudding is always in the eating...how does the engine go?

[fcerratu]

very good work man. congrat. !!

[chad174670]

that is a bad ass shirt

[hondanutbar]

Your a nut case grinding the chamber with out the valves in to protect the seats you got the deck half polished PORT POLISH FOR DUMMIES

[hondanutbar]

here in canada thats the yellow pages under machine shop LOL

[aaron9696024]

um maby he didn't care he was gonna put bigger valves in and deck the head??

[hondanutbar]

um maybe you should fuck off how many engines have you built dick head did you ever here of thermal coatings

[aaron9696024]

what do thermal coatings have to do with what i said noob.

[hondanutbar]

the point is noob i said port and polish for dummies when you shine the intake ports to a shine you change the flow of the fuel a rough suface makes a spiral funel type effect when you grind all the thermal coating off it fucks it up he is grinding free hand this means all the ports are going to take the fuel differant you will loose performance WILL SOMEONE HELP ME OUT AND TELL THIS FUCK PLEASE

[aaron9696024]

usually the intake is polished to a satan finish because fuel will collect on highly polished surfaces. and the proper explanation is the ports need to be rough to keep the fuel atomized. i know that and your a fucking idiot if you think it has "thermal coating" stock and "free hand" well thats how porting is done unless you own a cnc machine and know how to program a good porter can make all the ports the same.

[hondanutbar]

fuck off you american cock sucker go fuck your ugly mother all the niggers do

[aaron9696024]

ha ha little fag gets mad cuz im right.

[alexesteves99]

Boy he took some weight off... ata boy!!!!

[xtremech]

Hey sausage fingers...what is the fuckin deal with the ice pick??

[gjessie05]

Damn backyard mechanics. Safety glasses please. Fuck i hate that dentist sound. Makes me go ouchhhhhh..........

[TrainingPeralta]

safety glasses really are a good idea.

[xtremech]

EZ there sausage fingers!

[purefighter]

What a pain in the a s s!!hahaha

[jdmboss1]

love it!!!

[DIOSpeedDemon]

LOOKS GOOD! I rode in a 3000gt twin turbo and scared the hell out of me. Keep up the good work mon ami? Five stars *****

[dphothisane]

that thing has become a huge grenade!!!!

[hulkvertfonce]

tu fait surrement les jobs chez renault f1

tes debille!

[8av8today]

Lost power there. I doubt that port made power of significant flow. I saw alot of flaws and Big NO NO's on the combustion chamber. The velocity was also affected. Too bad.

[73sebrougham]

damn this video scared me man brought back flashbacks from the dentist

[panoulis20]

didnt know that the guys from the circus also do (or try to do) head porting in their spear time.

[ixlr8turbo]

safety glasses please .....

[alex530man]

no 1 really knows how 2 port like me

[JgHaverty]

holy freaking cow.

[spartanic]

Cool video. I just can't stand his shirt.

[daniellee1277]

these days you would weld fill the port and close it up for airspeed. So old school...

[stock92csm]

dumbass the trannys are great

[mikecassion]

that's dedication.. this guy must have been doing his motor for months that he forgot to fecker his wife anymore!!!!!!!

[jedirifleman]

Damn! That is a lot of hard work. looks like at least 40 hours worth. I hope you get big money for all that work.

[lyolioly]

ta gueule nomuken1 tu dit toujour la meme crisse d'affaire, farme ta yeule !!!

[nomuken1]

Its such a pity that the 4wd transmission is so weak on these cars. They coul have been a cool car but in reality they cant be driven how they were intended to be as the transmission is so very very weak.

[ghufosdhifh]

The transmission are great it was the seals 3rd party manfactured that leaked and ended to transfer case malfunctions. BTW does you tranny run out past 200mph i doubt it. Also can you get a 6 speed tranny for you car that has a pull gear not OD from the factory...

[nomuken1]

can you show me a link to explain the above problem then?

[headfire52]

super boulo fred!!:)