3 angle valve seats

[Gareth_C]

Daft question what's the best way to tell if a head has three angle valve seats

[Royston]

You should be able to see the three ground faces on the seat and valve

[garyc]

also the valve may be back cut too if done properly.

[Gareth_C]

I'll have a look tomorrow cheers

[Will F]

Irrelevant anyway really, doesn't add any performance gains... It was a bit of a fad about a decade ago and people used it on their spec sheets to take up space lol

[Andy]

Bollox.if theyve been done properly with a backcut you will see gains.

[meritlover]

Irrelevant anyway really, doesn't add any performance gains... It was a bit of a fad about a decade ago and people used it on their spec sheets to take up space lol

:wtf:

[mowgli]

/\ i thought that getting rid of sharp edges was the key to decent airflow....and a 3 angle cut would be as close a way to do that with a valve seat as you can realistically get with normal tools...

[Gareth_C]

I Only ask as that's the the modification I can do to the head for the class I run

[garyc]

there are 3 angle seats and 3 angle seats though!

what class are you racing in?

[Gareth_C]

ORCI stockrod's