PAUL V

Hi all cylinder head specialists can you have a look at these photos and tell me what you think?
I will not say who did it as this is not a name a and shame thread, but there is a few thing i am not happy with.
1 the finish around the seat area is rough i hope you can see in the photos
2 the valve guides were removed for the job to be done and they re used the old ones ? i take it if they were not worn this is ok to do ??
Why i ask is i thought when fitting guides they had to have the bore of the guide finished after being fitted?
3 the valve guides protrude into the ports, will this not upset the flow

4 the head was sent complete with valves fitted with springs collects etc and it came back missing the valves! I had to call up and ask for them, i asked are they numbered they said not you can fit them in anywhere? Having looked at the valves you i can see that they have been faced but some have small pits in them i don’t think this is good.

Your opinion and thoughts would be good
Thanks

JTECH James

iTrader: (13)

doesnt look to bad...


did you pay for hand finishing?

PGT

looks like it was done by a cnc machine judging my the machining marks (cnc heads?).

dont know about refiiting used guides but got told when i had mine done that most of the after market guides available 'dont fit' meaning that maybe they make them a couple of thou bigger so that they will be tight given the potential problems of the removal process (which dont always materialise anyway).

the exhaust guides look like they've been machine a little bit shorter.

also, if those valves in the first photo are exhaust valves they dont look like the proper ones!

PAUL V

I did pay for the hand finish yes,
they are exhaust valves with the number "EL YB0500" on the top of the stem ?? Why you say they dont look right ?

J1mbo

iTrader: (1)

you best take it back and tell em to hand finish it then as that is not
it could have been slightly judging by some of the pics but not to a high standard

JTECH James

iTrader: (13)

mine is hand finished, and is better than that tbh, it doesnt look like they did it

foreigneRS

the valve and seat finishing leaves a lot to be desired.

PAUL V

TBH this is the 1st thing that i saw, and what has made me look closer

like i said i will not say what company did it, but they had a stand at a show and had a YBP head on there and mine did not look like that !

I have told the company about the finish and he said "it will make pleanty of power" ! and i told him about the guides sticking out and he said not that is how it is, but i have just this second looked on their web site and there is loads of photos of the YB head and mine does not look the same !

Aaroncast

-------i Was Hand Finished Once!!!!!!!!!----faster Than Expected Aswell -
Yahooooooooooooooooooooooooooooooooooooo-lol

MikeR

I would mention that and ask him why, it is not about weather it will make power it is about weather you are getting what you thought you would get, and judging by your post you are not,

Mike

Rippers

I hate companies that respond like that, you pay for a top notch job and get the bare minimum. If your not happy and you have been showed examples of what it should be like and didn't get it, they need to refinish it, not blag their way out of it

badnews

the valves are still pitted and it's hardly hand finished and if the guides have been out then in i would thought the valves would be hand finished and matched to each cylinder just to be sure all is good

-beefy-

iTrader: (6)

take it back .

simple as ,

beef ,

PAUL V

I will drive there and show them, just would like to know what i think is right that is why i started the thread

Benni

You might want to PM Karl off this forum and link him to this thread. I'm not sure if he would mind responding but I have seen him give a hood answer on a thread like this before.

Benni.

Garage19

Actual shape of the pors looks good. I've hadd a head from CNC before with the hand finising and you could not make out the maching marks.

Take it back and get them to finish it or get the Ł100-150 ish you paid for hand finishing back.

Not sure i like what they have done with the valve guides and the pitting on the valve seats needs fixing to.

We were very happy with the CNC head but i was over 2 years ago so staff may have changed and quality dropped.

PGT

well i have three sets of valves here which have been removed from cossie heads ive accumulated and the numbers are:

EL14831 exhaust
EL14830 inlet.

those ones you have actually look like the ones that cossie boyz sell on ebay - they are different shape to originals. the genuine valves have a sharper taper up from the head towards the stem and the seat on those valves in your photo are bigger than orignial ones. having said all that i bought a set from cossieboyz that look like yours and they're ok so far .......

PAUL V

I have EL-YB0015 on my inlet valves. My head is a YBP IE a small turbo head so i think the guides and valves were diffrent

frog

You must make sure the exhaust valves are sodium filled to help them cope with the exhaust temps on full boost, etc... if not sodium filled, they may melt and cause a lot of damage.

Don't buy cheap exhaust valves, you will probably regret it later.

PGT

time will tell................

LHD220Turbo

iTrader: (4)

ive seen heads finished better in all honesty; if you've paid for hand finishing; they either havent done it or not done it to a good standard

the valves shown in the pic dont look right to me either; where did they come from? there is a company on ebay selling so called cossie valves but they are of a crap standard

as said above, you need sodium filled ones; but i'm not sure how you can tell if they are sodium filled or not

if that was my head i wouldnt be happy, as no doubt you've paid top money

BM08

Who was it then? if i know who it was i wouldnt bother going there if that is their handy work!

Asturias

Judging by those pics it looks a very poor job indeed.

Iam comparing it with my head which was done by Nick Waples-now that really is a piece of art.

Shame its fooked.

clarke5700

i would be happy with that how much did thet charge and wot did they do?

wes

Run a magnet along the exhaust valves, if they are magnetic all the way along they are not proper cosworth valves, cosworth ones are magnetic from the tip of the valve stem to about 1/3 the way down, then they stop being magnetic.

YB0600 is the cosworth part number.

PGT

it's true! just tried it and the magnet only sticks to the top 1 inch of the exhaust valve which makes all these ones on my desk the real mccoy - see my above post for the correct markings.


the inlet valve by contrast is magnetic for its full length

PAUL V

As far as i know they are my old valves that came out of my head, the cost of the job was Ł1,233 like i said in the start of the thread i will not say who did the job, but will let you know the outcome

PGT

drum roll.............. and its [cnc heads is my guess]

orion_crazy_carl

iTrader: (3)

fuck me pay me that and i'll do a better job with my dremmel

PGT

what was the outcome of this????

Jim Galbally

Ł1200? i thought a PROPER head only cost that much?

NEIL A

iTrader: (6)

I have a CNC big valve head on my car , and the finnish looks alot better than on yours mine was done a couple of years ago have heard that someone left and there work has went downhill a bit ?

Turbosystems

iTrader: (5)

My advice is to send your heads to the cossie engine boys ie turbosystems, Karl Norris,scs,reyland mad.you will then get a proper speced head,for your application

PAUL V

Do you do your own porting in house then tony ?

I took it to CNC as i thought they were the best and did the work In house and not just subbed it out to make a few ŁŁ on the job

Now nick warples is putting it right and i am paying twice

Turbosystems

iTrader: (5)

If you had followed the advice I have given you wouldn't be paying twice.Now you seem to begrudge any of the tuners I listed making a profit for their expertise and knowledge ,what you fail to realise is that they would have payed less than you did and charged you less even with their margin.
Some of you deserve what you get with your attitude you seem to think that the 20+years of expertise these tuners have should not be payed for.
With the comments you have made above particularly this one just subbed it out to make a few ŁŁ on the job I no longer have any sympathy for you .
Next you will be expecting us tuners to send you all our drawings for free so you can get it all done yourself.

PAUL V

With all due respect tony i know a bit about the business of tuning and engine work, I have run my own business for 18 years working in two stroke engines Hell you even called me up for advise on a sunken jet ski you had
I never begrudge anyone making a profit, What i do have a problem with is company’s claiming they do the work but then sub it out and have no control on the finished item.
My reason for going to Ric Wood AKA CNC heads Was.
A: I had seen a YB head at his stand at the Auto sport show and i was impressed with the shape and the finish of the ports.
B: I thought that CNC was the way to go as all 8 inlet and all 8 Exhaust ports would be the same. From experience i know how hard it is to get all the ports the same shape and size working the head by hand.
C: Nick Warples had stopped doing cylinder heads, Karl Norris was on very long waiting list!, but as i have found out Nick has started doing some head for Harvey.

I understand that you have to pay for experience and this applies to tuning and set up and to some extent building and specking a engine, But in the case of cranks, cylinder bores, long studding cylinder heads nearly all tuners SUB this out to specialised company that there area of expertise is just that.
There is no way you are tell me you tell your cylinder head guy how to port a cylinder ?? what shape to make the port ETC ??? this is why they are experts.
I have had P Mason Engineering do my long studding
Perfect Bore do my cylinder bore honeing
And Vibration free do my balancing
Harvey Gibbs is now sorting out by head and furnishing me with a set of valve springs, cams and lifters.
I will then finish the engine build and get Harvey to supply me pectel T6 and set it up

PS Editd to say i am not after your sympathy