has anyone on here ever ported a head and had good results?? and i dont just mean clean it out a bit and make it look nice .

i will probably get shot to bits for trying this but i get told a lot what you can and cant do at home in your garage and ive done ok so far with making manifolds exhaust systems drive shafts ect .

p-s pic's would be nice if anyone has any of there own work.

 

the problem with fluid dynamics is that its hard to gauge without expesive computer modeling! so the chance of getting a head job done right the first time (ooow errrr) is slim, so the only other best way is trial and error,,,, can you really aford to keep pulling your head on and off, plus the remaps in the middle?
the best way i find with head is to pay an expert

 

i asked a couple of tuners about it garry and they said unless youve got a flow bench or such like its veryhard to do specially if you havnt done them before.

 

mapping is not a problem

 

the man who built my engine (in a shed) also ports heads and has had proven 500bhp results.......this guy has been building engines forever though

 

Nick Waples.

 

ive seen a few of his vid's

 

Neil Roper

http://www.roperdevelopments.co.uk/

cheaper than most

 

the problem is if you do it yourself, how do you know that each cylinder is flowing evenly?

the proof isnt always in the pudding

 

very true thats why i allways leave the head work to those that know what there doing....the experts.

 

..... i wouldn't get mine done "in a shed"......but yes it can be done with good results.....as for "perfect flow"......the problem is paying for it, and when a man in a shed will do it fo a few hundred quid people will bite his arm off for the service.....

 

i wouldnt care where its done, aslong as its done right! some of the brightest inventions has come from a shed

 

whilst hiding from the mrs

 

Don't think every tuner who ports head puts each one on a flow bench ! A friend of mine who helps with my engines ports my heads (lets me cut the material out and he shapes/finishes the ports) and i've had good dyno proven results. He picked it up from someone who really knows what they're doing years ago and has just progressed through doing lots of them and dynoing engine's (he's also flow tested some i believe). It is a bit of a black art i believe, in that people who port heads just know what works and what doesn't and don't have to put every one on a flow bench to prove it. The chap who does mine merely does it as a hobby and for friends, and has done various heads for some big power cossie motors, over 5 years ago now he ported the head of one that made 630bhp so it can most definately be done at home in your garage! In fairness though he mainly does cossie/cvh heads as he really knows his stuff on these, every engine will require different porting techniques to get results so it's not just a matter of taking material out to get bhp, so if you're just looking to do zetec heads you should be able to research what works on them. As said though you'll probably spend alot of time and development work to get anything like the results of a proven head porter.....if you're happy with that then give it a go for sure mate, ideally you need someone to point you in the right direction and give you some hands on advice

 

as iam very good friends with ian howell ive been watching him do his evo heads , to be fair he has fooked 2 up but its a learning process , he took the first out right out until he went through to the water jackets so he knew whats the limit of material in the actual cylinder head was.now his lastest head looks like it has been cnc machined its that good. zetec heads are very cheap so buy a few and give it a bash if you get better results on your engine then you can give yourself a pat on the back if not you wasted a few quid so its no big deal.
i can post some pics up of my head but remember its a shonky silver top lol
no seriously if you want some pics i will send in a pm

cheers paul

 

i have loads of pic's of proper ported zetec heads was just interested if anyone had done a bit them selfes and had pic's.

i have spent a lot to time researching head porting on turbo engines and been taught a fair bit by a top head man so this wont be a shit job by a long way .

and i have ported the the first set of ports and made a mould to match the rest so they will all be the same.

only time will tell if i make more power but im sure i will infact im sure i will max out the turbo

 

Dont head porters cut up a few heads to see who much meat they have to play with when they do a head they have never done before?

 

Do you know of anyone who's used one of his heads?

Serious question, i could be very tempted to get in touch with him as he seems very reasonable.

Thanks, Karl

 

iv used many niel roper and nick waples heads both with great results...steve pacey is very good too..

cheers danny

 

 

is that your own work there then lloyd

 

yes mate, its a st170 head.the port walls are very thin.i off center bored it to increase flow to the shrouded part of the valve face.
i also had some extra alloy welded in by the injector groove so i could straighten out the port a bit more.

 

gary have a go whats it going to cost u? how did the pro's learn?????

 

I'm wondering about getting Ian Howell to do mine at the moment. He said only the exhaust side really needs doing (of my 170 head), as the intake side is already very good. He only wants a Ł100 odd, so might have it done. But then a standard head might take more abuse...

 

lots of the Vauxhall boys use him, ask Chip

polly X off here has one of his heads in his cossie powered westfield

i started a thread about it ages ago https://passionford.com/forum/genera...-know-him.html

cheers

 

the exhaust ports are tiny on the st170 head there the same as the blacktop about 21mm in the throat

 

ive half done it mate heres some of the exhaust ports .

sorry bout the pic's off my phone

 

Thanks steve, i'll send you a pm shortly

Cheers mate!

 

Are you using a standard head (on the exhaust side) at the moment?

Looking at the pictures, it makes me think I'll get mine done...

 

how you going to test your work after? remember we have 4 individual cylinders, so how do we check they are all benifiting from this increased flowrate? problem is they are connected to a common inlet and exhaust system

 

yes the head on my engine is totally standard at the moment. im also building a flow bench to test the heads i have a few blacktops and two st170 heads, a few cvh heads including a jamsport,norris nead and a ferriday head (cvh) to testa and copy .

 

on a home made flow bench and i will be testing the head with and with out the inlet on to see how that is performing.

 

it sounds like your on your way to getting it right!

 

i can only try mate ,i get a lot of pleasure from doing it myself i could buy a cnc head if i wanted to but i have done everything else between me and a few friends and would like to keep it that way.

 

I dont suppose you have a spare (good/complete) 170 head laying about do you? lol

 

i do but after a bit more practice and testing it will be getting worked for a friend off here sorry.

 

No worries.

If you come across a good low mile one, mabe you could give me a nudge?

 

will do mate.