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Triumph Torque    Cars    Herald/Vitesse  ›  Tale of two engines
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Nick Jones
August 19, 2007, 6:42pm Report to Moderator

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I recently aquired a spare Vitesse engine (ebay has alot to answer for!) either to rebuild or to go in the car while the existing lump gets a freshen-up.  It is mechanically complete, turns smoothly and has moderate end float.

Like my existing one it is a mk11 and the engine numbers appear to be within 700 of each other:

In car: HC 541XX HE
Spare: HC 548XX HES

So question 1 is what is the significance of the 'S' suffix?

Also there are some visual differences.  
1. The engine in the car has the older straight sided block whereas the spare has the later 'bubble' sided one.  
2. The engine in the car has the front pulley and harmonic damper vitually the same diameter, the spare has the front pulley considerably smaller than the harmonic damper.

Anyone have any ideas why there should be these differences?

Heads both have the same number on them and are consistent with Vitesse MkII.

I always understood all Mk 2 Vitesses had flat top pistons and the hotter cam - I'm hoping this is true!

Nick


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea

http://www.tengaston.plus.com
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roger.england
August 19, 2007, 7:06pm Report to Moderator


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From what I understand these were factory "spare" engines - usually supplied as warranty replacements.

Roger


1971 Gilbern Invader
1956 Terrot 125 EMS
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Smallfry
August 19, 2007, 11:01pm Report to Moderator

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I have read that somewhere before too...............

I believe that the smaller pulley was fitted to engines with alternators ?

Maybe that engine was originally intended for a 2000 saloon ? Only guessing mind.....
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Nick Jones
August 20, 2007, 5:28pm Report to Moderator

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Thanks guys - I suspected that might be what it meant.  I hope it has the proper cam in it.  Will have to check the hard way I suppose.

NIck


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea

http://www.tengaston.plus.com
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davesideways
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Nick Jones
August 20, 2007, 6:39pm Report to Moderator

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Yeah, did that on the engine that's in the car, still got the numbers somewhere.  That's how I know I need another cam, no.1 exhaust has less lift than the others

Nick


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea

http://www.tengaston.plus.com
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Nick Jones
August 20, 2007, 10:04pm Report to Moderator

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Posts: 9,930
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Quoted from SpitBang
do you mean the early 132bhp PI, MkII Vitesse, GT6 type


Yes, this one.  I'll measure the lift/timing with a dti as I can do this by taking the rocker cover off.

Nick


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea

http://www.tengaston.plus.com
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jimio
August 20, 2007, 10:52pm Report to Moderator
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When measuring the lift, is it simply use the dial to record the difference between fully closed and fully open to give the valve lift?

The standard 6's have a 1.42 cam lift-valve lift ratio correct? so factor this in to get the cam lift?
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davesideways
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