I think you are close with the number located on the flange where
the gearbox mounts behind exhaust manifold. In your email below you say is
says “198420-S”. But are there any other characters stamped on the flange
before those numbers like 7D (420, 420G, MKX), 7L (XJ6 S1), 8L (XJ6 S2 and
Paul M. Novak
1990 XJ-S Classic Collection convertible
1987 XJ6 Vanden Plas
1985 XJ6 Vanden Plas (parts)
1984 XJ6 Vanden Plas
1969 E-Type FHC
1957 MK VIII Saloon
From: email@example.com [mailto:firstname.lastname@example.org]
On Behalf Of Queeny
Sent: Tuesday, June 07, 2011 6:07 AM
Subject: [xk-engine] Engine Identification
I am hoping the forum can help me identify the engine in my 420.
The engine has been changed at some point in its life but I cannot
identify from which car it has originated.
The engine numbers I have found do not follow traditional 420/4.2
engine number format though it is clearly a 4.2 as this is cast
into the block.
I have looked around the engine block and found a few numbers that
may help with its ID.
- Located on the flange where the gearbox mounts behind
exhaust manifold. 198420-S
- Stamped into the engine mounting below the inlet manifold
- Cast into the block on the left hand side immediately
below the top of the block/head surface C34750FF
- Cast into the block also on the left hand side and
immediately below the top of the block/head surface 26-10-73
If I am looking at the wrong location could you please indicate
where the number is located.
The head gasket has blown and identification will assist obtaining
the right replacement.
Many Thanks & Regards
//please trim quoted text to context only