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#Post#: 2853--------------------------------------------------
idea for improving oil feed to the cams
By: petethediesel Date: August 8, 2020, 4:18 am
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Good morning gents,
I am rebuilding my Nuovo Falcone engine. It started with
intending to just change the clutch plates but once the cases
were off it was clear that more work was needed. So far:
Crank regrind including recovered nose for the oil feed, and
new big end. New bearings throughout the engine/gearbox. New
selector forks. Complete cyl head re build with improved
valves/new guides/springs. New standard oil pump. Camshaft re
grind/new followers.
I'm intending to fit a viton oil seal instead of a plain
bearing on the crank nose oil feed. My attention is now on the
camshaft oil feed. What a dumb system that relief valve fed weir
is!! I'm thinking to tap the relief valve piston and fit a 0.3mm
carb jet into it, giving a permanent small feed to the weir but
still having a full valve operation at 3.8 bar.
Has anyone done this? and/or any thoughts?
PS: I already have the Moto Pirner modified oil feed and full
flow filter system fitted.
#Post#: 2854--------------------------------------------------
Re: idea for improving oil feed to the cams
By: banquo Date: August 11, 2020, 3:18 am
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There's a 'standard' fix for this adding a separate oil delivery
pipe, but I don't have full details of it.
I think it originated in Germany, so you might find something on
guzzitreff.
Also pretty sure it's covered in Leafman's thread on advrider,
but I can't get into that right now to get you a link.
Kater on that thread has definitely done that mod.
#Post#: 2958--------------------------------------------------
Re: idea for improving oil feed to the cams
By: cloggy Date: July 11, 2023, 12:12 pm
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I have the secondary valve feed. It smokes after a while on
idle. Apparently they all do... To minimise cam wear I don't set
the idle really low. I have it set like a brit single.
#Post#: 2959--------------------------------------------------
Re: idea for improving oil feed to the cams
By: banquo Date: July 11, 2023, 1:24 pm
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[quote author=cloggy link=topic=435.msg2958#msg2958
date=1689095537]
I have the secondary valve feed. It smokes after a while on
idle. Apparently they all do... To minimise cam wear I don't set
the idle really low. I have it set like a brit single.
[/quote]
This is the additional feed to the camshaft Cloggy: not to inlet
valve
Incidentally, I have the inlet oil feed, and no issues with
smoking, but I also have the cylinder head modification using
8mm stems and guides fitted with valve stem oil seals
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