Hi Guys, I am new to the forum and looking for some advice for my 748sps.
I recently bought the beast above and with a promise of an up to date service history with a lack of paperwork I started to ask myself some questions...
The bike has covered 13k but I know all too well that a poorly maintained Duke can lose its valve adjustment pretty quickly.
On checking the shims nearly ALL are out of spec and at that time decided to pull the cams.
On doing this (as I sadly expected) my bike is showing pitting on 4 rockers with another 10 showing wear. At this point I knew this was going to be a big one for the wallet.
I have been through the saga of;
1) Buy new..... No chance (Im not Richard Branson)
2) Get another engine and strip it..
3) Or replate the originals.
After much thought and the temptation to buy a 998 engine I have decided to get the old rockers rechromed.
I have found a great local source in the UK for Hard Chroming but they cannot offer the reprofiling.
My question is... how much re profiling would be needed as the shims will need to be changed anyway.
Unlike a Camshaft I would imagine that the (ground and re-chromed rocker) would not have an altered duration like a peak of camshaft lobe.
Any help or advice on this would be much welcomed.
Thanks in advance guys!!!:blind:
I recently bought the beast above and with a promise of an up to date service history with a lack of paperwork I started to ask myself some questions...
The bike has covered 13k but I know all too well that a poorly maintained Duke can lose its valve adjustment pretty quickly.
On checking the shims nearly ALL are out of spec and at that time decided to pull the cams.
On doing this (as I sadly expected) my bike is showing pitting on 4 rockers with another 10 showing wear. At this point I knew this was going to be a big one for the wallet.
I have been through the saga of;
1) Buy new..... No chance (Im not Richard Branson)
2) Get another engine and strip it..
3) Or replate the originals.
After much thought and the temptation to buy a 998 engine I have decided to get the old rockers rechromed.
I have found a great local source in the UK for Hard Chroming but they cannot offer the reprofiling.
My question is... how much re profiling would be needed as the shims will need to be changed anyway.
Unlike a Camshaft I would imagine that the (ground and re-chromed rocker) would not have an altered duration like a peak of camshaft lobe.
Any help or advice on this would be much welcomed.
Thanks in advance guys!!!:blind: