Club Triumph

So, I have removed the head of the PI and, have the overhaul completed with new valves, guides and seats with the help of CW and Howards at his suggestion. The original had lost some compression and a vacuum test on the three throttle bodies seemed to indicate some valve guide wear too.
For the rebuild, I ordered a new cam and gear/chain set from Chris, his 3003 spec item but at his advice, it's being made from a blank rather than regrinding another one. Seemingly, he's had up to 25% failure rates from regrinds, which is not good! Anyway, there's a couple of weeks to wait now for the next delivery so I started on the other bits.

Rocker shaft - I attempted to strip this down after work one night this week thinking it would be a quick job; there's a bit of play in some of the rockers on the shaft and, some wear generally on the pushrod pads. I wanted to get into it to clean out the shaft initially and replace what was necessary however, without resorting to hammers and punches, it's all pretty tightly on the shaft - the pedestals will need to be tapped / punched off after the split pin and locking screw have been removed - is this normal I wonder? The Haynes book seems to imply it's all a sliding fit...!

Paul

Hello Paul,

it is a sliding fit on assembly but with time oil hardens on the shaft and in a high mileage engine or one that hasn't had oil changes the rocker shaft is waisted where the rockers operate so can impede removal. If you can give it a good soaking in de greaser for some hours should help by softening the hardened oil. Careful use of a hammer may be required.

Alec

Hi Alec,

Great, thanks for that - just wanted to be sure before hitting it properly....!

Paul

Use on of the latest quality rocker shafts ... Tuftrided , available from myself and maybe others .

Thanks - will keep it in mind for the rebuild - where are you based and how much are they?

Paul