[TR] TR250 and TR6 heads

[dave1massey at cs.com]

In a message dated 1/21/2010 9:15:30 PM Central Standard Time, 
fogbro1 at comcast.net writes: 
> I have 2 heads from the TR250-TR6 series engines. How do I tell the early
> (TR250) from the late (TR6).
> 

Do you have a manifold gasket?  The exhaust ports were moved for the CF 
series engine.

Also, the 74 or later have a port for the EGR Valve.  The 73 had the cast 
boss for the valve but were not machined. (this is probably the reason for 
repositioning the exhaust ports.

Dave