Valves

[DaveL485]

Basically, I Need to make some valves. The std, NA application ones are going to melt horribly all over my expensive pistons if I don't when I turn the boost up.
I Need 3 sizes, 4 of each, in stainless steel made to fit my head.

Does anyone know where I can get some sort of reference or comparison so I can get something close to what I need? The idea being to buy oversized and cut them back to fit. Either that or buy suitable blanks.

The application is a Renault 2.0 litre 12v head on a J7R (R21Turbo) block, highly modded with wire rung steel liners, forged pistons etc etc, with full standalone management and Nitrous.


I'm kinda stuck cos I didnt really wanna go overseas to get it done....

I'm based in the midlands.

Cheers!

[chuntington101]

have you considered cermaic coating the vavles???

also what car is the engine going in?? sounds an interesting project.

Chris.

[DaveL485]

Renault 21 Turbo Quadra.

I'd rather make some stainless ones than coat std ones.....I havent done half a job on anything so far and wouldnt risk it cos the pistons and liners alone are worth a couple of G.

Anyone?

[FWDRacer]

Try googling Paul Ivey...

[Furyous]

From the Autosport.com directory....


Del West Engineering
Valencia, California, United States
Del West Europe
Roche, Switzerland
Ecotek Technologies Plc.
Surbiton, Surrey, United Kingdom
Forge Motorsport Engineering
Gloucester, Gloucestershire, United Kingdom
Hi-Spec Valves Ltd
Old Cwmbran, Gwent, United Kingdom
MECACHROME S.A.S
Paris, France
MEGATEC
Athens, Greece
Nicole Racing Japan Co. Ltd
Kanagawa-ken, Japan
Performance Springs Ltd
Lytham, St Annes, Lancashire, United Kingdom
Prosport UK
Melton Mowbray, Leicestershire, United Kingdom
Race Engine Components
Albrighton, Shropshire, United Kingdom
Richbrook International Ltd
Wimbledon, London, United Kingdom


HTH
F

[dilbert]

DaveL485 said:

Basically, I Need to make some valves. The std, NA application ones are going to melt horribly all over my expensive pistons if I don't when I turn the boost up.
I Need 3 sizes, 4 of each, in stainless steel made to fit my head.

Does anyone know where I can get some sort of reference or comparison so I can get something close to what I need? The idea being to buy oversized and cut them back to fit. Either that or buy suitable blanks.

The application is a Renault 2.0 litre 12v head on a J7R (R21Turbo) block, highly modded with wire rung steel liners, forged pistons etc etc, with full standalone management and Nitrous.


I'm kinda stuck cos I didnt really wanna go overseas to get it done....

I'm based in the midlands.

Cheers!

If nothing else is already suitable, get them forged and ground by people who regularly do both. I think that modifying existing valves is likely to be more of a disaster than just using valves that you think might melt.

These peole look good.
http://www.gsvalves.co.uk/general_overview.htm

[That Daddy]

FWDRacer said:

Try googling Paul Ivey...

i had some of these fitted to a screaming Ford Xflow with waisted stems,top quality stuff,i would certainly buy valves suited for your purpose rather than modding the stock ones

[DaveL485]

Thanks for the replies.

I Like the look of those Ivey valves, but cant find any contact details for him, the company or any dealers.

Can anyone give me a lead on contacting someone about these?

Cheers in advance.

[K13 WJD]

sodium filled ?????

[stevieturbo]

If going to all this trouble, may as well get Inconel exhaust valves..

I assume you are aiming for huge power ? Or are the std valves really crap ?

Im sure there are plenty of places in the US that could make custom valves, and no doubt be cheaper than the UK, especially given the exchange rate.

[DaveL485]

K13 WJD said:

sodium filled ?????

Thought about it. The standard R21 Turbo valves are sodium filled with brass guides, even considered cutting them down to fit! Cost is a factor now though (baby No2 due in 2 weeks!) so i'd be happy with stainless.

Looks like i'm headed stateside unless someone has info on those Ivey valves?

[carlosvalderrama]

For god's sake don't use normal stainless!

Stainless will be next to useless as a poppet valve. If you go directly to a valve supplier they'll tell you what to use. Typically Nimonic type steels are used, but there are countless alloys capable of doing the job. Most valve steel is heavily alloyed, some with up to half of the material non ferrous.

Any alloyed steel with over 10% Chrome in it can be considered stainless, but the name 'Stainless steel' is usually reserved for alloys with over 15% or so. Normal Stainless as a structural material is next to useless, difficult to bend, cut, machine, drill or weld and comparatively weak compared to a decent high tensile. EN52 was common in the olden days, and is still used on intakes but exhausts need a superior material for the higher temperatures.

[DaveL485]

http://www.ferrea.com/products.php

Have a look here at the 5000 or 6000 series.....thats what I was thinking of getting.

[AlpineAndy]

I've found this:
Paul Ivey (Race Engine Components of West Bromwich 01902 373770)

and

Race Engine Components Ltd
37 Beeches Road
West Bromwich
B70 6HH(Road Map)
West Midlands
Tel: [phone]

Edited by AlpineAndy on Saturday 24th November 15:18

[DaveL485]

Great stuff!!

Cheers for that, i'll give him a headache first thing monday morning lol