Cosworth cyl heads ! Whos else >>?
10-01-2007 | 10:04 AM
#41
Originally Posted by GARETH T
Originally Posted by CossieRich
What size are the ports on a low-lag head port Karl?
10-01-2007 | 10:05 AM
#42
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From: Sheffield
Originally Posted by Karl
Here's a quick price guide giving approx costs for each stage of head.
Stage 1 low lag suitable for up to 450bhp - £500 +vat
Stage 2 suitable for up to 500bhp - £750+vat
Stage 3 suitable up to 600bhp - £1000 + vat
Stage 4 suitable for power over 600bhp - £1200+vat
All these prices are for the porting work, chambers reworked, new guides, with seats re-profiled and head refaced and new stem seals.
Extras include new valves, different valve springs, different spring retainers, any welding/helicoil work, cams, followers, bigger valves etc.
As always the cost of each head depends on exactly what condition yours is in and the maximum power required. (Pointless fitting a 600+head and using a T34!)
Hope that helps and remember one thing, you get exactly what you pay for!! A cheap head can only be cheap because of the minimal hours spent on it!!
Stage 1 low lag suitable for up to 450bhp - £500 +vat
Stage 2 suitable for up to 500bhp - £750+vat
Stage 3 suitable up to 600bhp - £1000 + vat
Stage 4 suitable for power over 600bhp - £1200+vat
All these prices are for the porting work, chambers reworked, new guides, with seats re-profiled and head refaced and new stem seals.
Extras include new valves, different valve springs, different spring retainers, any welding/helicoil work, cams, followers, bigger valves etc.
As always the cost of each head depends on exactly what condition yours is in and the maximum power required. (Pointless fitting a 600+head and using a T34!)
Hope that helps and remember one thing, you get exactly what you pay for!! A cheap head can only be cheap because of the minimal hours spent on it!!
Cor, its like seeing Jesus in pototo thats been chopped in half
nice to see you post Karl
10-01-2007 | 10:06 AM
#43
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From: barry-south wales
Originally Posted by CossieRich
Originally Posted by GARETH T
Originally Posted by CossieRich
What size are the ports on a low-lag head port Karl?
im sure if you paypal'ed him 500 quid now he would tell you
10-01-2007 | 10:08 AM
#44
Originally Posted by GARETH T
Originally Posted by CossieRich
Originally Posted by GARETH T
Originally Posted by CossieRich
What size are the ports on a low-lag head port Karl?
im sure if you paypal'ed him 500 quid now he would tell you
10-01-2007 | 02:55 PM
#46
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Originally Posted by JonnyBravo
Nick Waples
No idea how his prices compare to anyone elses though.
Speak to Harvey Gibbs as I know he uses (used) him in the past as his work is awesome.
No idea how his prices compare to anyone elses though.
Speak to Harvey Gibbs as I know he uses (used) him in the past as his work is awesome.
when i was at harveys i saw that he has all the necessary machinery to do it himself and also was told nick has given him an extended piece of his knowledge so maybe talk to harvey or mike ??
michael
10-01-2007 | 05:49 PM
#47
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From: Huntingdon
You know a bit about Nick too then
I was good friends with his daughter till they moved abroad.
Harvey or Mike would no doubt be able to help anyone with a enquiry.
Good to see Karl post though, gives people a rough idea of what "real" cylinder heads cost as most people think £500 gets you the works, when really thats the starting point !
I was good friends with his daughter till they moved abroad.
Harvey or Mike would no doubt be able to help anyone with a enquiry.
Good to see Karl post though, gives people a rough idea of what "real" cylinder heads cost as most people think £500 gets you the works, when really thats the starting point !
11-01-2007 | 09:35 AM
#48
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A cossie head made by me.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
13-01-2007 | 12:22 PM
#50
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From: Huntingdon
Originally Posted by rabmc
Thanks for the replys people , its all down to ho much wedge you got really
Karls work for £500 i should think is well worth the money, anything else is wasted unless you have a serious engine to justify spending 2k on a cylinder head.
13-01-2007 | 05:55 PM
#52
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From: In my garage, coventry
Originally Posted by PatrickSwe
A cossie head made by me.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
13-01-2007 | 08:40 PM
#58
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From: Milton Keynes
Re: Cosworth cyl heads ! Whos else >>?
Originally Posted by rabmc
Anyone else other than the two mentioned ,i did liked the sound of the stage 1 low lag 400 head form nms ? 
He does very good prices on head rebuilds and machining.
13-01-2007 | 08:42 PM
#59
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From: Redditch, Worcestershire
Originally Posted by rabmc
That is the business budweis !!!!
Really is , i dont know fook alla bout it but i know its good lol
Really is , i dont know fook alla bout it but i know its good lol
13-01-2007 | 08:45 PM
#61
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From: Milton Keynes
Originally Posted by Garage19
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
Very much agreed.
Some people dont realise just how important the head is to the power of a cosworth and think a little dremel out and a head skim is fine....lol
Good luck Rab, hope you get it sorted and make a real stormer.
13-01-2007 | 08:48 PM
#62
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From: Redditch, Worcestershire
Originally Posted by COMEDY DAN
Originally Posted by Garage19
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
Very much agreed.
'all the gear,no idea' is sometimes the case (not aimed at anyway mentioned above BTW)
13-01-2007 | 08:55 PM
#64
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From: Milton Keynes
Originally Posted by rabmc
Yeah iL be n contact with butch soon , pm`d him and hopefully have a chat with him soon , heard good reports about him
Good luck mate.
14-01-2007 | 01:22 AM
#66
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From: shropshire
Originally Posted by Garage19
I can recommend getting your done at CNC heads. Their headwork has result/measuremnt driven development and and engineering. their machine can replicate their given port shape perfectly over and over again. A 16 valve head from them is usually just under a grand.
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
As a result of this post i looked at CNC Heads Web site and whent to see them at the Autosport show Very Very Impressed i can tell you
I will be spending my £££ with CNC Heads
14-01-2007 | 01:33 AM
#67
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From: Stockport, Cheshire
Originally Posted by Garage19
I can recommend getting your done at CNC heads. Their headwork has result/measuremnt driven development and and engineering. their machine can replicate their given port shape perfectly over and over again. A 16 valve head from them is usually just under a grand.
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
I don't have the skill to port my head myself, but after any edcucated guestimates i went to Karl.
I had many discussions with him, and challenged many of his theroies. JUst because he has fancy Mech Eng degree is irrelevant! We spoke about many "tuner" ideas, then i shut up ant let him get on...
The resilt is my 1600 makes the same power as a YB at the same boost. Impressive considering it's a shopping engine!
14-01-2007 | 02:09 AM
#68
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From: shropshire
Originally Posted by Rick
Originally Posted by Garage19
I can recommend getting your done at CNC heads. Their headwork has result/measuremnt driven development and and engineering. their machine can replicate their given port shape perfectly over and over again. A 16 valve head from them is usually just under a grand.
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
Got to be better than some guy with a die grinder, no flow bench and no measurable results/tests other than " yeah it went much better mate".
I don't have the skill to port my head myself, but after any edcucated guestimates i went to Karl.
I had many discussions with him, and challenged many of his theroies. JUst because he has fancy Mech Eng degree is irrelevant! We spoke about many "tuner" ideas, then i shut up ant let him get on...
The resilt is my 1600 makes the same power as a YB at the same boost. Impressive considering it's a shopping engine!
. The thing is with a CNC it will port the same time and time again same shape same volume 100% the same across all 16 ports.
14-01-2007 | 02:29 AM
#69
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From: fife
garage 19 is this you admitting you port heads on cars which dont work 
or are they done by a machine,everything works on paper but its not like that in real life,seen as karl and others have a good reputaion for there heads am sure they doing something correct
or are they done by a machine,everything works on paper but its not like that in real life,seen as karl and others have a good reputaion for there heads am sure they doing something correct
14-01-2007 | 09:40 AM
#70
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Originally Posted by Alg1k
Originally Posted by PatrickSwe
A cossie head made by me.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
equals to your 'lowlag' versions.
http://s93.photobucket.com/albums/l6...Cossie%20head/
portsize just above the valve 'pit' is recomended around 80-85% of valvediam.
More 'upstreams' in the ports the area is enough to reach around 450-500hp with just 'cleaning up' a little.
The camera lies a bit (crappy phone camera)
but info from www.cncheads.co.uk:
"We offer the standard CNC head and an additional service to hand finish the surface of the ports. This gives the final 1 CFM of flow."
A big ONE cfm better flow, often not worth the extra effort/money.
but if customer got big wallet,, ofcourse i can make smooth surfaces.
my own head(vauxhall):
14-01-2007 | 10:37 AM
#71
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From: scotland
http://www.cncheads.co.uk/ford_cosworth_sv.html
i have that head, finshed off by AVA.
seems to work pretty well
i have that head, finshed off by AVA.
seems to work pretty well
14-01-2007 | 10:55 AM
#73
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From: ON THE PC
Originally Posted by PJ ENGINEERING (PROX)
there is no way karl can replicate the head he did for you no way yes he can try and copy what he has done before but it is all about feel and the look of the port, trust me i do porting for a living . The thing is with a CNC it will port the same time and time again same shape same volume 100% the same across all 16 ports.
. The thing is with a CNC it will port the same time and time again same shape same volume 100% the same across all 16 ports.Certain machine shops have spent thousands on flow benches and cc'ing equipment to do the job RIGHT the first time.
14-01-2007 | 10:58 AM
#74
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with CNC as long as the machine has been programmed right each head should be exactly the same and will get done ALOT quicker.
AVA usually get there machine shop guy to do the heads but it takes so long that its not worth it for him.
Alan at AVA looked a few different heads as an alternative and ended up picking this one after a few phone calls to CNC.
If Alan is happy with the head then I have to be too as Alan is a perfectionist
Jonny...looked amazing when sat next to a standard head..
AVA usually get there machine shop guy to do the heads but it takes so long that its not worth it for him.
Alan at AVA looked a few different heads as an alternative and ended up picking this one after a few phone calls to CNC.
If Alan is happy with the head then I have to be too as Alan is a perfectionist
Jonny...looked amazing when sat next to a standard head..
14-01-2007 | 01:21 PM
#77
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the head comes back bare Rab..no new valves etc.
AVA had to do the maching work for the Iskys and they cut the valve seats a different way if i remember right.
the total price for my head would make a grown man weep
850+ vat for bare head.
i also have a bill for 950 quid from mountune for the rest of the stuff to re build head
AVA had to do the maching work for the Iskys and they cut the valve seats a different way if i remember right.
the total price for my head would make a grown man weep
850+ vat for bare head.
i also have a bill for 950 quid from mountune for the rest of the stuff to re build head
14-01-2007 | 01:25 PM
#78
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Euan thats serious cash mate , dont know if i could sleep at night knowing that shit , but as you have the fastest cossie in scotland i think that would get me off at night lol
14-01-2007 | 01:27 PM
#79
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I dont think of it like that mate...it my hobby and somethin gi will be involved in for years to come so i think its money well spent.
the car was never meant to be what it has turned into but with a bit of help from my tuner, it goes to show that anythingis possible
going by your wages in the other thread you earn ALOT more than i do
so money should be option for you
the car was never meant to be what it has turned into but with a bit of help from my tuner, it goes to show that anythingis possible
going by your wages in the other thread you earn ALOT more than i do
so money should be option for you
14-01-2007 | 01:30 PM
#80
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Im a tight aRSe though euan
And trying to save and have a cossie isn`t the easiest thing to do as you no.
Im still at home mate so trying to save for my own place this year
And trying to save and have a cossie isn`t the easiest thing to do as you no.
Im still at home mate so trying to save for my own place this year