Seconding Brian's response: the cams are the same, but if you are re-using cam bearings and tappets, they need to go back in the original banks, with the indivisual tappets in their original positions.
Even then, you need to check valve clearances and adjust shimming as necessary, because at the very least you will have lapped in the valves, disturbed spting caps and retainers etc. It shouldn't make a big difference, but it can (and in any case it is all too easy to get components accidentally mixed up and ruin the clearances).
To be honest, I'd be replacing the cam bearings as a matter of course if I were rebuiilding the engine, though, along with new valve springs and - if there is the slightest sign of wear or pitting - new tappets. Then there are the valve guides, of course, which tend to wear badly in the Twin Cam and are almost certainly going to need replacement in any engine that needs a rebuild, which in turn dictates new valves...it all gets very expensive very quickly, unfortunately, if you are going to do the job right!
Whilst not wishing to say anything against your brother, if he is being kind enough to rebuild your engine for you, the Twin Cam is quite a sensitive engine to rebuild - the thought of it being put back together by someone who forgets to label parts when he strips it down is just a leeeetle worrying! Are you sure you wouldn't rather send it to QED?
Martin
----- Original Message -----
From: ***@***.***
To: ***@***.***
Sent: Thursday, June 16, 2005 6:42 PM
Subject: [LotusElan.net] Cams
Maybe this is a Dumb question, but just wanted to check:
Are both cams the same in the Twink? My brother is rebuilding my UK
Elan+2, and didnt label which was where.
Does it matter where they go back in to?
TIA,
John J
Posted: Thu Jun 16, 2005 5:42 pm