Hardened Valve Seats

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luli
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Hardened Valve Seats

Post by luli » Sat Nov 22, 2014 10:58 am

I am looking for Rover P2 hard exhaust valve seats, for converting the engine head to lead free petrol. The outer diameter of the valve is 1-17/64 inch (1.265 inch = 32.14 mm), and the angle is 30 degrees. Actually, Rover P3, and many P4 and P5 and Series Landrovers used exhaust valves of the same diameter but with 45 degrees angle. My questions:
Who can supply the correct seats, made out of Stellite or better advanced materials?
Has anybody modified successfully a 45 degrees seat into 30 degrees?
There are some ONS seats on eBay for the above cars. Are they hardened, suitable for lead free operation?
Rover 10 1946 RHD
Rover 10 1947 LHD
Rover 12 1947 tourer LHD
http://lulisml.wordpress.com/

GOY189
Posts: 557
Joined: Sun Oct 19, 2008 5:08 pm

Re: Hardened Valve Seats

Post by GOY189 » Sat Nov 22, 2014 6:03 pm

HI Luli,

I came across this http://www.hthoward.co.uk/engine-machin ... t-inserts/ and it backs up what I discussed with the Manager of a machine shop specialising in unleaded conversions. The Seats can be cut to accept any valve seat angle.

Hope this helps

Mike

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luli
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Re: Hardened Valve Seats

Post by luli » Sat Nov 22, 2014 6:49 pm

Thank you Mike. That answers one of my questions - good to know.
luli
Rover 10 1946 RHD
Rover 10 1947 LHD
Rover 12 1947 tourer LHD
http://lulisml.wordpress.com/

chris dancey
Posts: 386
Joined: Tue Oct 20, 2009 8:20 pm
Location: Brighton & Paphos, Cyprus

Re: Hardened Valve Seats

Post by chris dancey » Sun Nov 23, 2014 6:12 pm

I bought my valves, insert seats from Mike Evans, some years ago, fitted by my local machine shop. Chris
1934 ( 1935 model ) P1 '10' Saloon RD 6160
1935 P1 '10' Saloon ( originally JB 6729 ) now VSJ 156
1946 P2 '14' Sports Saloon KPG 855
1933 MG J2 Cycle Wing Model APB 560
1933 MG J2 Competition Model ALX 124

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