[Fot] difference early and late TR6 Cylinder head

[Jeff Durant]

Bill,
The "short" branch intake manifold came with 2 p/n's, 308088 (TR250 and TR6
(up to engine CC50000) and 311378 (TR6 CC50000 up to CC75000).  Both have the
narrow intake spacing.  The "long" branch intake manifold also came with 2
p/n's, 312187 (CC75000 to CF12500) TKC1100 (after CF12500). One version
supported the EGR valve heads.  The earlier one I believe.  Both have the wide
intake ports.
Hope this helps.
Regards,
Jeff Durant
TR250
'69 TR6
'69 TR6 #12

Sent from my iPhone

On Oct 7, 2014, at 4:53 AM, "Bill Tobin" <william.tobin31 at verizon.net> wrote:

> This brings up another qustion: what's the difference between a long branch
intake as opposed to a not-long branch (short branch?)?
> Part numbers? Usage?
> This bunch is a treasure of information!
> Thanks, Bill
> ----- Original Message ----- From: <rkramer3 at austin.rr.com>
> To: "Henry Morrison" <dos_gusanos at msn.com>; "Robert M. Lang"
<lang at isis.mit.edu>
> Cc: "fot" <fot at autox.team.net>
> Sent: Tuesday, October 07, 2014 7:39 AM
> Subject: Re: [Fot] difference early and late TR6 Cylinder head
>
>
>> I have a 1972 TR6 CC75059LO, the 59th (or is that 60th) car after the
switch to the dual exhaust and long branch intake manifold. I always that the
1972 model (built in 1971 in this case) was the point in time for the cylinder
head change. I gues the head may have been around for the PI cars prior to the
USA change.
>>
>> Bob Kramer
>> rkramer3 at austin.rr.com
>>
>> ---- "Robert M. Lang" <lang at isis.mit.edu> wrote:
>>> From the Goodparts web site:
>>>
>>> http://goodparts.com/shop/index.php?categoryID=36
>>>
>>> scan down to the manifold gasket section.
>>>
>>> Early has 1.875 spacing (center to center)
>>> Late has 2.187 spacing (c to c)
>>>
>>> c ya,
>>> rml
>>>
---------------------------------------------------------------------------
>>> Bob Lang              Triumph TR6!!            |  This space for rent
>>> Former NER Solo Chair                          |
>>> Voice:617-253-7438                             |  Cell: 339-927-4489
>>>
---------------------------------------------------------------------------
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>>
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