Who is best for cylinderhead development work uk

[delcbr]

Looking for someone experienced and competent to carry out cylinderhead work that can bias the flow away from the valve shrouding as The chamber wall is right next to the gasket line.

[227bhp]

On what?

[E-bmw]

An engine.

[delcbr]

BMW s54 e46 m3 engine. Engine shouldn't matter if it's in the right hands hence why Iam looking for someone that can overcome the valve shrouding without having to deshroud it by biasing the flow away from the longside to the shortside.

[delcbr]

[delcbr]

[delcbr]

[stevesingo]

Er,

that cylinder head looks much the same as any other 4 valve cylinder head where the valves are a large as practical. This means the valves are close to the extremity of the cylinder.

I'm not sure what unshrouding of the valves you think can be done or what you are hoping to achieve.

There is plenty of S54 experience in the UK and more so Germany. Any of these companies would be able to give advice.

[Boosted LS1]

The only way you'd unshroud those is if you made the head chamber wider and that would be counter productive for all sorts of reasons.

You could do a tiny bit of fettling but personally I'd leave those heads alone.

[delcbr]

Google searched s54 cnc .de
Couldn't find anything.
Any help?

[stevesingo]

Try Geoff Steel or JC Racing.

[viggyp]

Possibly try Guy Croft in Lincolnshire.

Pricey but you do get what you pay for. He's good, very good. First specialised in the Fiat/Lancia Twin Cam lump but works on various other engines too.

[Evoluzione]

viggyp said:

Possibly try Guy Croft in Lincolnshire.

Pricey but you do get what you pay for. He's good, very good. First specialised in the Fiat/Lancia Twin Cam lump but works on various other engines too.

Unlikely to be of much use as he doesn't have a flowbench.

[Evoluzione]

delcbr said:

Engine shouldn't matter if it's in the right hands

It does matter - a lot. Anyone with a lot of development work behind them already on this head/engine will be streets ahead of anyone who isn't.
It would be like taking a Porsche to a Renault specialist.

[viggyp]

Evoluzione said:

viggyp said:

Possibly try Guy Croft in Lincolnshire.

Pricey but you do get what you pay for. He's good, very good. First specialised in the Fiat/Lancia Twin Cam lump but works on various other engines too.

Unlikely to be of much use as he doesn't have a flowbench.

Ah ok. I didn't realise.

[delcbr]

Who's reckoned to be the best in the uk?

[stevesingo]

I know it is school holidays but come on...

Ask a bunch of strangers who is the best and get a bunch of different answers. If you can't work that out and or use Google I don't think it is wise for you to start it the first place.

[delcbr]

I asked around this is what Iv been told
https://www.amacengineering.co.uk/

[Mignon]

There's little point in asking around as no one who has ever had head work done because they couldn't do it themself is in any real position to evaluate what they had done for them. Only those who have been top notch head flow specialists can probably know what the competition was really like. Over the years you get to compare a lot of flow figures and also see how other people's engines go on the track in the same series. The best that I ever knew are also retired now. Or dead actually. God I'm getting old. Bill Blydenstein, Johnny Middleton at Competition Engine Services. Happy days. Johnny taught me more about head flow than weeks of experimenting on my own or any book. I did a scrap Pinto head for days trying everything I could think of on the flowbench. Took it over to show him how I was the dog's bo11ocks now. He flowed it, grumped a bit, took it into his porting room and beavered away for 10 minutes. Recut the seats to a different profile. Put it back on the bench and blew my figures into the effing weeds. I learned a lot about flow and even more about humility.

Most people who do headwork are about as good at it as Donald Trump is at being president.

[delcbr]

that made me chuckle :-)