going to get my head gasflowed for the new T4 engine,

at the moment im heading CNCs way,

anyone recommend anyone?

want this sorted asap...so it can be mapped

 

Darren at DAMICO, 01953 717784.
He has all the bits to do a good job loads of years experience, a cossie die hard, has engine dynos etc etc, worth a chat.
tabetha

 

are they flow tested?

 

been hearing CNC heads are not so good now Jim as gone back to sweden

 

speak to karl at nms

 

ahhh, maybe its a good thing i asked then....

 

someone who does it by hand is what you want i think scs does them any size might be worth a bell

 

ask ur tuner..........but nms will do a stage 2 head (supplied) for 750 + the twat....give karl a pm

 

Thinking about it you could try guy croft his books on performance engines go for something like £200 there so in demand so he must be doing something right

http://www.guy-croft.com/index.php

Tell him the spec of the engine and what its intended for

 

thanks guys keep the ideas comming!
i have asked my tuner,but this is an interesting topic...

 

other thing to price up if needed.....cams (of ur choice).....iskeys,new valves,seals,gaskets,etc...........

 

i'll do it for a few hundred!

 

will be having all that...and the rest of the engine

 

im having issues with my head,il let you know if well known machine man dont sort it

 

The CNC heads are done by a computerised lathe so it makes no difference if someone has left or not.

 

I used Andy Weston at Cylinder Head Developments. Always had a good reputation in years gone by, and lots of the big power Cossies seem to feature CHD work.

 

Karl Norris (NMS)........Very Well Respected and VERY Experienced.

 

Yes Damico done by hand, every single one, all his heads work as confirmed by his testing results.
tabetha

 

what a croc,a computer is only as good as its operator.

 

What' how can you get it wrong? its a CNC machine ? they will all come out exactly the same

 

unless the new employee gets to play with the program (which i doubt) then ur wrong mate


miller beat me too it!

 

unless you want some specifically for YOUR engine,custom work from someone who KNOWS what they are doing,not a machine that religiously follows what is input to it.it might be EXACTLY the same,but if its not input correctly in the first place then it will all be EXACTLY wrong!
and youre also saying a CNC machine never does anything wrong?hmmm.....well the scrap metal bins outside metal workshops around the country will disagree with you.

 

 

How can you develop a cylinder head without a flow bench, engine dyno?

So if you apply that rule neither Karl Norris or Cylinder Head Developments have either!

And how on earth do you think a hand ported head is preferable over a CNC cut one??? As long as the port shape is good the CNC is best every time as it can replicate that port shape precisly in every port with no variation time and time again.

 

thats what i thought! and i know the likes of cnc heads cut a few heads up to see exactly where they cant,and cant machine...

 

The main problem i heard is Jim used to do everything with the heads the development the computer putting the head onto the CNC machine Jim took great care that everything was 200% spot on

If your 1 mm out when bolting the head into place the whole head will be done wrong

 

The CNC heads make a good base but I think most people still have them fettled after which is a good enough reason not to use them.

Nik Waples, Karl Norris, Neil Roper are a few I can think of who I would use.

 

Never mind 1mm mate, if your a few thou out its gonna be wrong

I would imagine whoever does the cnc stuff there is capable of bolting things down in the right place

 

ordered a cnc one, with hand finishing today

 

good choice IMO!

 

lets hope so....should make proper power this time!

 

[QUOTE=G2RSR;3255637]The main problem i heard is Jim used to do everything with the heads the development the computer putting the head onto the CNC machine Jim took great care that everything was 200% spot on

If your 1 mm out when bolting the head into place the whole head will be done wrong [/QUOT


Use a probe like,should come with the cnc miller can programme it to measure the head every time you bolt/unbolt it