[TR] TR cylinder heads

[Dave]

I have this booklet that was published by the factory and later reprinted by TRF, describing the different cylinder head configurations fitted up to TS13052E in 1957. The Le Mans heads are rare.
Dave H.


Sent from my iPad

> On Nov 26, 2018, at 1:34 PM, wbeech <wbeech at flash.net> wrote:
> 
> Andrew,
> TeriAnn’s web site give the differences between the head designs, this should help answer your question:
>  
> http://www.tr3a.info/FAQ_heads.htm
>  
> Bill B
> TS30800L
>  
> From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Andrew Uprichard
> Sent: Monday, November 26, 2018 1:15 PM
> To: triumphs at autox.team.net
> Subject: [TR] TR cylinder heads
>  
> When it comes to the 4-cylinder TR models, I am aware of four variations on cylinder head design:  the original low-port TR2 head, the “le Mans” head which was a variation on the low port design, the high port head which came with most of the TR3s and the TR4 head with the smaller intake aperture.
>  
> But someone was talking to me the other day about a variation in the high port TR3 head.  According to this guy, there was a variation in the thermostat housing, some of which were more sloping than rounded.  He claimed the sloped design was more attractive as it lended itself to more shaving and thus a better, high compression engine.
>  
> I must admit I had never heard about this.  I have three heads sitting in my barns and all have what appears to be the same, rounded underneath to the thermostat housing.
>  
> Has anyone heard of this?
> 
> Andrew Uprichard
> Jackson, Michigan
> ** triumphs at autox.team.net **
> 
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