hi there...

have anyone had there Head done at this guy... Read about him in this months Performance Ford.... sounds very attractive...

The thing is, I live in denmark... so I want to be sure, bofore I take my head off, and ship it to the UK

so plaese help

 

yeah he's good but if you someone even better want try david baker@ www.pumaracing.co.uk i've got his 45mm valve cvh head it is worth 40bhp more then most stage three heads

 

turboboss, ive been reading his web page and have thought about using him for a while now as hes had good reports from the few people ive heard of using him

 

im in the same town as engine advantages!any idea how much he charges per hour for set up/tune ?

cheers

 

i cant Recommend him enough his attention to detail and sheer knowledge is unbelieveable i know him Personally have helped him strip down and clean engines before work commence if you are having trouble getting through to his by email i ma going to see him this weekend "havn spoke to him for month's".my old 1.9cvh with a stage three head use to produce 240bhp @ 22psi with his head went up to 296bhp 298fbt @ 22psi flows 10%cfm less then a ported 16v zetec. brom at zoo motorsport has built me a 2.0 zvh with the following spec........

zoo motorsport built 2.0zvh eagle steel rods je pistons 7:8:1 compression ratio
David Newman custom cam
Pumaracing 45mm valve race spec larger insert cvh head with custom double valve springs
Gt25/40r 0.64 dual roller bearing turbo Simpson’s race exhausts tubular manifold hks filter
Zoo three inch exhaust system from the turbo back
Zoo turbo pre-rad and oil cooler with remote oil filter
Zoo spoon style inlet manifold with 45mm ram jets
Grs fm cooler grs 520mm rad
Uprated escort cosworth fuel pump
S8 ecu running coil pack, closed loop lamba
750cc injectors as well as supplying more fuel then my old dark greens these are a much superior injector due to the spray pattern coming from six port hole nozzles instead of one for better fuel atomization. These supply 56cc less then eight greens.
Zoo group a engine mounts and gearbox cradle. This what I can remember so far.

with the flow rate of the head and turbo there is no reason why at 2 bar this engine cant produce just over 400bhp on my last spec 2.1zvh L8 ecu same turbo but normal efi manifold, greens, two inch exhaust from the turbo back which was strangling the power, and the cam shaft not dialed in properly. engine produced 311bhp 296fbt @ 19psi but was starting to run lean I might not even make that figure but the Potential there, i will know for Definite in two weeks time.... hopefully ready for santa pod october 15th

 

here is some of pumaracing handy work



45mm inlet valves




custom valve spring seats

 

How much would one of those cost?

 

i paid £850 but well worth it i have tryed different ported heads and this one beyond a shadow of doubt the best head helps against lag and just flows so much air

 

you could always try VULCAN engineering, awesome modded head made for me there!

 

turboboss thanks for these photo's and the positive comments on pumaracing

i might just send my head there when im ready

i fancy the big valve zetec head

 

ROFLMAO, Tony, u about mate??

 

If Vulcan heads are as good as their valves then I wouldnt touch them with a barge pole.

Vulcan oversized Valves, which were used in my last head, did a fantastic job of being social ....dropping into say hi to my pistons ......
they objected to the over friendly valve head & atempted to eject it ....but he wasnt willing to leave without a fight .

All the above whilst runnig in revs limited to 4K(management governed)

Result of (defective valve @ steam/valve head)

One totaly mullerd engine!

Why? all because of a poorly manufactured Valve.

Nice one Vulcan

 

what work did u have dun by them and how long ago was that? have they not helped u to sort out the probs or take any responsibilty?

 

Here is some of Andy Westons @ Cylinder head developments work



A fully worked Zetec head with bigger valves.
Not mine but a friend n/a zetec thats in a Mk2 Orion

 

AROFLMAO



sIIpinky - You are joking? Right?

 

Sorry to hear that Andy



Vulcan strike again

 

Ah shit happens I suppose Tony. Boundarys cant be pushed without an element of risk.

One things for sure if/when Im having a head worked again, I'll be sure to find out who the Valve manufacturers are.

Back on topic:

Cylinder head developments article in PF looked good, prices appeared to be very reasonable aswell. Pics look good Johnny. Nice

Turboboss again pics look good nice work I must say Im well impressed with Puma Racings web site specificaly the technical info & his straight talking no noncense aproach, there are a lot of parallels between both his and my own tuners 'tuning principles & idealoligies'

 

pumaracing designs his own valves for maximum flow they are not your normal stainless steel crap which end up destroying the valve inserts. if you are aftera cvh head he is the only man to see.
i remember speaking to andy weston about fitting 45mm inlet valves to a cvh head and his words to me was it cant be done. dave baker does'nt talk bull shit,you tell him waht you want and he will tell you how to achieve it.he is a master engine builder who pays so much attention to detail... here is a little editorial from david baker about flow rates, he was explaning why some zvh dont rev check in the techical essay archive under turbos engines dont rev true or false,with the help of his bv head and the addition of newman custom cam i hope to have built one of the most powerfull zvh powered cars in the country. sorry for going a bit off the topic but if you want a modified cvh head contact david baker, he is now taking new orders



As a rough guide, and std flow varies quite a bit from head to head (as of course does flow after modification depending on the skill of the modifier) they flow (or can be made to flow) as follows.

Std CVH - 140/145 cfm
Ported std valve CVH - 160/170 cfm
Std Zetec - 170/175 cfm
Ultimate Ported 45mm BV CVH - 180/190 cfm
Ported std valve Zetec - 190/200 cfm
Ported 33.5mm BV Zetec 210/220 cfm

By ported I mean by an expert with a flowbench who's put a lot of R&D time into it and not by someone with a flapwheel and more optimism than expertise.

As you can see a well ported CVH, especially BV CVH will match a std Zetec and get close to a fairly well ported std valve Zetec. However even a BV Zetec isn't going to turn a 2.1 bottom end into any sort of rev monster without using cams and turbos that are just not going to be very road driveable.

According to Ford my 2.0 Focus ESP produces peak power at only 5750 rpm and I have no reason to doubt that from how it drives. Increase the size of the bottom end a bit, drop the CR to 8:1, make the air go through an intercooler and several feet of plumbing before it even reaches the inlet manifold and that rpm would drop a lot further still. Adding the turbo won't alter any of this.

If high rpm for its own sake is a specific target for someone then tune a N/A engine with throttle bodies and cams or build a turbo one with a smaller bottom end. Personally I'm not sure what the big deal with high rpm is provided the car is geared correctly for its power output.

 

Turboboss is correct the man is a GOD
The Dr

 

 

Andy Weston is pretty good a mate of mine swears by his work. He's only up the road from me so i might pay him a visit to get my headwork done.

 

[quote="turboboss"]i cant Recommend him enough his attention to detail and sheer knowledge is unbelieveable i know him Personally have helped him strip down and clean engines before work commence if you are having trouble getting through to his by email i ma going to see him this weekend "havn spoke to him for month's".my old 1.9cvh with a stage three head use to produce 240bhp @ 22psi with his head went up to 296bhp 298fbt @ 22psi flows 10%cfm less then a ported 16v zetec. brom at zoo motorsport has built me a 2.0 zvh with the following spec........

that mean that you got an extra 56bhp from a pumaracing modified head... now that is alot..

the thing that cought my attention with CHD was the price and the gain of 25bhp...