M20 +2mm custom supertech intake valves

[Liukas1992]

Long story short, I can not find anywhere +2mm (44mm) oversize intake valves, thinking to order from Supertech, these are one of the best valves you can get, weight, design and quality, but +2mm is minimum 50pcs custom order for 40euro/pcs.
50pcs would be shipped to me in europe and than I would ship these in smaller quantities anywhere you need, expected delivery time ~4-5 months after manufactoring order is placed.
Anyone would be interested in group buy?
Also any idea where to find more m20 engine builders in one place😀?

[digger]

if you dont really want to organise a GB then as an FYI you can order from manley any size and QTY, mutiple materials, custom back cuts, and different keeper styles all within 4 week delivery normally. i have bought several sets of 6 in +2mm, +3mm

[Liukas1992]

Ok, I will try to contact them.

[digger]

Ok, I will try to contact them.

https://www.manleyperformance.com/cu...BUN_nfdnFEQA_E

you are supposed to fill out this form below

https://www.manleyperformance.com/wp...m_valves-1.pdf

and email them back

In order to fill out the form refer to

https://www.manleyperformance.com/wp.../08/valves.pdf

the first few pages describe materials available and page 42 and 43 of the document have the blanks available

you will probably want to use 6.96 mm stems and so 11246 (race series) it can be shortened to suit m20 length without removing the hardened tip and max available head size is 48mm so easily fits 44mm

you can change the margin, seat width and face dish from that shown on page 42/43 and can add back cuts (IMO mandatory)

you can also use 7mm but will need additional effort to hone guides out

bear in mind you can only shorten the length of some blanks so much (typically 38mm) so if you choose the "wrong" blank you may need to run a lash cap so the tip is hard enough as it may get removed if you shorten it too much