Unleaded Valve Seats
Turbo Mini Forums

I'm thinking of making and fitting my own unleaded seats. It will cost a bit to tool up but I've got several heads to do.

Anyone know how hard the seat material has to be?

I've seen Stellite mentioned on some sites, but on Axel's Morspeed head, the seats look like a bit of turned stainless bar.

I was thinking of using some 316 bar, any ideas?

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I THINK my (and Vegards) machinist uses old camshafts as valveseats?! You can also get them from the Rover parts dealers I think.

Edited by miniminor63 on 18th Jun, 2007.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

The cylinder head shop sells inserts of all sorts of sizes.

apt chrome nickel manganese .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Part Number
Description
Pkg'd
Price US $

08711221
Valve Seat Insert - 0.87" ID, 1.12" OD, .219" H
EA
$5.75

09311821
Valve Seat Insert - 0.93" ID, 1.18" OD, .219" H
EA
$5.75

09311825
Valve Seat Insert - 0.93" ID, 1.18" OD, .250" H
EA
$5.75

10012521
Valve Seat Insert - 1.00" ID, 1.25" OD, .219" H
EA
$5.75

10012521+10.
Valve Seat Insert - 1.00" ID, 1.26" OD, .219" H
EA
$5.75

10012525
Valve Seat Insert - 1.00" ID, 1.25" OD, .250" H
EA
$5.75

10013121
Valve Seat Insert - 1.00" ID, 1.31" OD, .219" H
EA
$5.75

11213721
Valve Seat Insert - 1.12" ID, 1.37" OD, .219" H
EA
$5.75

11814321
Valve Seat Insert - 1.18" ID, 1.43" OD, .219" H
EA
$5.75

11815021
Valve Seat Insert - 1.18" ID, 1.50" OD, .219" H
EA
$5.75

13115621
Valve Seat Insert - 1.31" ID, 1.56" OD, .219" H
EA
$5.75

13716221
Valve Seat Insert - 1.37" ID, 1.62" OD, .219" H
EA
$5.75

13716225
Valve Seat Insert - 1.37" ID, 1.62" OD, .250" H
EA
$5.95

13716425
Valve Seat Insert - 1.37" ID, 1.64" OD, .250" H
EA
$5.95

14316821
Valve Seat Insert - 1.43" ID, 1.67" OD, .219" H
EA
$5.95

15017525
Valve Seat Insert - 1.50" ID, 1.75" OD, .250" H
EA
$5.95

15618121
Valve Seat Insert - 1.56" ID, 1.81" OD, .219" H
EA
$5.95

16219331
Valve Seat Insert - 1.62" ID, 1.93" OD, .310" H
EA
$5.95

16819321
Valve Seat Insert - 1.68" ID, 1.93" OD, .219" H
EA
$5.95

18121221
Valve Seat Insert - 1.81" ID, 2.12" OD, .219" H
EA
$5.95


Positive Type Teflon Valve Stem Seals - All Sizes

thats apt's list ,ill find the site addy

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

http://www.aptfast.com/

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Thanks robert.

Still fancy machining my own from an old cam.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

how bout nipping off down the scrappy ,and getting a alloy head with the inserts you want and sticking it in the oven till they fall out , and if they are in there too tight hack them out with a disc ??
prob get 4 inserts for a fiver that way !

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

IIRC my pet machinist told me once that alloy vs. iron heads use different material for inserts.