fiestaturbo.com

[crazycage]

has anyone ever done there own porting and had any results from it and i dont mean a little clean up and make it look nice lol
any pic's of the work would be nice.



[Link to guide - JamieFRST]
post1815938/#p1815938

[Excursion]

Always wanted to, but haven't gopt around to building a flow bench yet.

Don't trust a reply from someone who doesn't own, or doesn't have access to a bench. There's a lot more to it than taking material out of the ports. Taking the Zetec for example, the best results on that head mean extremely little taken from certain areas of the roof, but the best tuners will run some paper over the whole port to make sure the customer thinks they are getting something for their money (they are anyway - but this improves their perception and hides the actual areas that were worked on!).

[crazycage]

most of the material i have taken out is from the throat and the short side radious ,but i dont have access to a flow bench as yet.

[dangerousdave]

have you seen this yet mate...??? http://www.turbosport.co.uk/showthread. ... nch-for-24

[Ruishy1]

There is a book that gives you lots of info on this, and it also told you how to build your own basic flowbench
It went walkies but i read it a fair few times.
Its not all about just high flow rate numbers, you need to take into consideration the speed of the gas, swirl and tumble.

Best bet is get a book, an old head and try it your self mate IMO

[crazycage]

have you seen this yet mate...??? http://www.turbosport.co.uk/showthread. ... nch-for-24

nope never seen that will have to have a good read tho,im in the middle of building a flow bench pretty much the same as that

heres a pic of some of the exhaust ports

[dangerousdave]

some of his posts are very interesting mate but with a bench like that you would of prob needed to have a reading of the head in standard form as a comparrison..?? looks like you have taken quiet a bit out but looks all good to me mate!

[crazycage]

some of his posts are very interesting mate but with a bench like that you would of prob needed to have a reading of the head in standard form as a comparrison..?? looks like you have taken quiet a bit out but looks all good to me mate!

i have loads of heads mate including a norris cvh a jamsport cvh and a few standard st170 heads and blacktop heads ,the one in the pic's is a practice zetec head

[dangerousdave]

you want me to test the zetec one if i ever get my zt to pissing run!! lol

[crazycage]

flow bench should be finished tomorrow bring on some real testing

[dangerousdave]

sounds good! cant wait to hear the results!

[crazycage]

ported out the inlet side today what do you lot think ?

[Ruishy1]

TBH mate, the opinions mean pretty much nill, what do the numbers say
oh and how much did your flow bench cost to make ?
the heads on my car flow like s**t, and i want to open them up, i would like to do it myself like you have

[crazycage]

TBH mate, the opinions mean pretty much nill, what do the numbers say
oh and how much did your flow bench cost to make ?
the heads on my car flow like s**t, and i want to open them up, i would like to do it myself like you have

tbh my bench has cost me about £8 because me and my my mate had most of what we needed .that head has not been on the bench yet just not had time ill get it onto the bench before the weekend

[Ruishy1]

8 quid
ive lost more running for a bus

Id like to build a flow bench, but i would invest a little more cash, get a decent manometer and blower.
BUT i dont have that kinda spare cash just now so il need to get someone else to check my heads once im done

let us know how you get on

[crazycage]

8 quid
ive lost more running for a bus

Id like to build a flow bench, but i would invest a little more cash, get a decent manometer and blower.
BUT i dont have that kinda spare cash just now so il need to get someone else to check my heads once im done

let us know how you get on

have a read of this

http://www.gofastnews.com/board/technic ... bench.html

[Ruishy1]

some interesting stuff there, id like to build something slightly more proffesional like the one with the digital readout
It will be a while before i have a spare 500 quid to throw on something like that though

[dangerousdave]

some interesting stuff there, id like to build something slightly more proffesional like the one with the digital readout
It will be a while before i have a spare 500 quid to throw on something like that though

500 quid my zetec turbos only costing about that!! lol

[Ruishy1]

good to hear mate, budget power all the way
How long till your cars ready ?
Im hoping the first incarnation of my engine will only cost me around £1500

Once its running alright i want to invest some cash and build one with the 5.2 stroker kit and a sequential b ox, but thats would be years away

[crazycage]

some interesting stuff there, id like to build something slightly more proffesional like the one with the digital readout
It will be a while before i have a spare 500 quid to throw on something like that though

the digital read it is just a add on to my bench but for now it is more than upto the job.

[Ruishy1]

what are you using to read the flow ?

[crazycage]

what are you using to read the flow ?

a manometer

[Ruishy1]

did you buy it or make it though ?
does it read in cfm ?

[dangerousdave]

surely antifreeze and a windscreen washer tube or hose pipe would be good enough!! if you measure the standard head and mark the flo with a pen then do the same with a ported item you would know a rough % of how well it flows!!???.... what more would you want for under £10? lol

[crazycage]

did you buy it or make it though ?
does it read in cfm ?

i made it its not hard , all your doing is measuring the pressure drop at what ever valve lift then convert to cfm and you would only want a cfm reading to compare to other heads that have been tested that way:D did you not read any of the info on the link

[Ruishy1]

i only gave it a quick browse, im in the middle of tracking down a pulley to go on my crank and a tensioner to suit.
Il give it a closer read when i have some spare time

[crazycage]

some of the inlet ports

[scouse-sambo]

Looking good mate.. you should surely see some improvement in flow there.

Have you got the bench up and running yet

[crazycage]

Looking good mate.. you should surely see some improvement in flow there.

Have you got the bench up and running yet

yes i just need to make valve opening tool,ive left one inlet and one exhaust port standard to measure and then flow test the other 3 and see if they are all within tolerance, the exhaust ports have been opend up over 5mm as they are tiny the inlet has only been ported about 1mm

[scouse-sambo]

I was gunna ask how you wer gunna compare!! but you have just answered it

if the standard zetec head is good for 350 - 400bhp as you have already proven without even touching it then any gain will be more than sufficient as a "practically free" upgrade.. fingers crossed mate its all good.

[Ruishy1]

Not ken on the look of those inlet ports mate, afaik it needs to be smooth transitions and there are some sharp changes there.
then again im no expert and just going on stuff i read in a book.
Only testing will tell

[crazycage]

Not ken on the look of those inlet ports mate, afaik it needs to be smooth transitions and there are some sharp changes there.
then again im no expert and just going on stuff i read in a book.
Only testing will tell

there is only one sharp edge that still needs a little blending and thats the injector port into the main port,the knife edge seperating the ports should be like that .

[crazycage]

I was gunna ask how you wer gunna compare!! but you have just answered it

if the standard zetec head is good for 350 - 400bhp as you have already proven without even touching it then any gain will be more than sufficient as a "practically free" upgrade.. fingers crossed mate its all good.

i would liked to have found the limit of the standard head but i maxed out my injectors then with the time of year i dont use the car that much so that was it i started on a few little jobs and ended up porting a head 350hp is easy on a blacktop and im sure i would of seen 370ish on the standard head but ill never no for sure .
i just want to max out the turbo next year see how that is and then onto a bigger one

[Ruishy1]

i know about the separation between the ports is like that mate, i was talking about the injectors port, i thought you had finished.

is there any shrouding on the valves ?

[crazycage]

i know about the separation between the ports is like that mate, i was talking about the injectors port, i thought you had finished.

is there any shrouding on the valves ?

no i havent done any shrouding ,may do a little but not till i have done some flow testing