Search found 6 matches

by iaincockburn1
Sun Jul 12, 2020 7:01 am
Forum: Mechanical
Topic: Clutch assembly
Replies: 6
Views: 1883

Re: Clutch assembly

Hi, Just thought I’d share some ideas on aligning the clutch thrust plate. I fitted a new clutch housing (along with new clutch plate and carbon release bearing) and assumed that it would have been pre-aligned. After heaving the gearbox back in to my horror there was a nasty vibration when pushing d...
by iaincockburn1
Thu Apr 09, 2020 8:06 pm
Forum: Mechanical
Topic: Engine rebuilt - blowing oil
Replies: 13
Views: 2433

Re: Engine rebuilt - blowing oil

Hi again Sorry for the long delay but progress has been slow given all that is going on at the moment. So - the big answer? Well, I removed the cylinder heard again and installed the later valve guides (with the slot for top hat oil seals) and of course the top hats themselves, just to the intakes a...
by iaincockburn1
Fri Feb 28, 2020 1:41 pm
Forum: Mechanical
Topic: Engine rebuilt - blowing oil
Replies: 13
Views: 2433

Re: Engine rebuilt - blowing oil

Hi again, a quick update. The bores were rebored and honed before I reassembled the engine. The cylinder head was lightly skimmed, and new standard valve guides (not the mini type with the extra ridge) were fitted. The valves were refaced and lightly ground in. When I took the head off the first tim...
by iaincockburn1
Sat Feb 08, 2020 7:56 am
Forum: Mechanical
Topic: Engine rebuilt - blowing oil
Replies: 13
Views: 2433

Re: Engine rebuilt - blowing oil

Hi, me again. Just beginning to lose confidence.....! I recall that the edges of the compression rings were stepped, not chamfered. The instructions that came with the rings stated fitting them with the narrower radius on the top, other websites suggest fitting them with the narrow radius downwards ...
by iaincockburn1
Fri Feb 07, 2020 5:46 pm
Forum: Mechanical
Topic: Engine rebuilt - blowing oil
Replies: 13
Views: 2433

Re: Engine rebuilt - blowing oil

Ah - many thanks for your responses especially the graphics. No, I did NOT check to see if the scrapers were orientated as outlined in the diagram, I assumed they were simply flat against the cylinder wall. Yes, the compression rings were correctly fitted but the included instructions did not mentio...
by iaincockburn1
Fri Feb 07, 2020 12:10 pm
Forum: Mechanical
Topic: Engine rebuilt - blowing oil
Replies: 13
Views: 2433

Engine rebuilt - blowing oil

Hi! Just completed a full engine rebuild - cylinders rebored (new pistons and rings), crankshaft reground (new shell bearings), cylinder head overhauled (new valve guides, valve seats reground, new oil seals). The cylinder head and engine block faces were lightly skimmed. All of this performed by a ...