Re: SER1 FW: Re: 1997cc head part numbers

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Leon

Quite right, the heads are interchangeable between 1.6L & 2L. The early head
number is 217868 (from Part Book TP/111/A December 1948) & the later head
(with different valve guides fitted) is 233430.

Incidently the question of camshafts has come up recently. Again the 1.6L &
2L camshafts are interchangeable. In fact it would be quite rare to find a
cam labelled 213705 as most spares that are still around today would be
511036. There was a hardening problem with 213705 at some stage, this was
rectified and the camshaft was issued a new number - 511036. 511036 fits 2L
& 1.6L. There is a Rover Technical Bulletin out about this one.

Concerning Rover part numbers: Just because two parts have two different
part numbers, doesn't mean the parts themselves are different. Rover would
change part numbers for various reasons including a change in packaging or
for example if the instructions included with the part were changed. A case
of this was with SI water pump kits.

Philip Avery
New Zealand

----- Original Message -----
From: Jeremy Brooks <seriesonegarage@xxxxxxx.xxx>
To: <series1@xxxxxxxxx.xxx>
Sent: Sunday, October 24, 2004 12:00 PM
Subject: SER1 FW: Re: 1997cc head part numbers


>
> ----------------------------------------------------------
>
> New Message on The Series One Garage
>
> -----------------------------------------------------------
> From: Leon
> Message 4 in Discussion
>
> I'll put my 5 cents worth in (as 1 & 2 cents are now out of circulation in
> New Zealand) The IOE head Part Number did change in 1950 when the seal
(RP#
> 233419) was fitted in the valve stem, from engine # 06106720 onwards. The
> head is the same but because the guide changed, then the head part number
> would have changed. In the 1955  6th edition, of the parts book (RP# 4056)
> both the early and later heads are shown as RP# 233430, but this number
> would have been issued in 1950, so there must be an earlier part number
> (217***) for the head with the earlier type valve guide without the seal
> groove. Is there someone out there with a very early parts book?? Leon
> Wellington New Zealand.
>
>
>
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