DIR Return Create A Forum - Home
---------------------------------------------------------
The Mighty Nuovo Falcone VOC
HTML https://nuovofalcone.createaforum.com
---------------------------------------------------------
*****************************************************
DIR Return to: Engine and Transmission
*****************************************************
#Post#: 406--------------------------------------------------
Valve springs
By: tonya Date: January 13, 2015, 10:36 am
---------------------------------------------------------
Hi Guys,
I've just removed my valves in preparation for vapour blasting
the cylinder head.
Those valve springs !!!!!!!!!!!!!! wow they are strong
!!!!!!!!!!!!!!!! the poor old camshaft must suffer !!!!!!!!!!!!
And I have read that a guy called HUUB has successfully fitted
weaker springs with a successful result.
If Hubert (HUUB) reads this I would be very grateful if he could
tell us what springs he fitted and if he fitted the inner
springs.
I does seem a well worthwhile modification to an engine with
valve guides that have seen a bit of use and are unlikely
(famous last words !) to tighten up and seize on the valve
stems.
With thanks for any advice that might be forthcoming.
Best wishes to everyone for 2015.
Tonya
#Post#: 416--------------------------------------------------
Re: Valve springs
By: banquo Date: January 14, 2015, 3:26 am
---------------------------------------------------------
Hi Tonya,
MTS do a service exchange service (Escher too?) and their web
page is here.
HTML http://www.mts-ricambi.de/html/nuovo_falcone.html
HTML http://www.mts-ricambi.de/html/nuovo_falcone.html
Maybe they can supply the valves, spring and guides loose, for
you to fit yourself?
Translation of their page:
Nuovo Falcone Cylinder head conversion to 8 mm valves
Here we offer a modification of the cylinder head, valves
with an 8.0 mm shank.
This modification includes:
Special valve guides "Titanium" with oil wiper edge
Wear-free change of leadership (gentle procedure f. d. head)
Valve seat milling (overhang)
brand new valves 47/40
reinforced valve springs valve spring retainer, wedges etc.
Distance mounting of valves incl.
Seat plan, combustion chamber blasting
the head comes completely ready for installation!
289,90 EUR
W doir for your Nuovo Falcone:
Cylinder head overhaul
189,00 EUR
Lead-free tags off!
189,00 EUR
Double ignition
99.00 EUR
Cylinder Kit 589 cc
369,00 EUR
Crankshaft grinding, ready for installation *.
179,00 EUR
Motors in Exchange
1.990,00 EUR
Camshaft repair set
On request
* that is, measured, x-rayed, Wedisitze edited, cleaned with new
plug
Hopefully Huub will chip in with what he's done.
I'm sure I read of someone fitting 7mm stems.... ???
#Post#: 417--------------------------------------------------
Re: Valve springs
By: huub Date: January 14, 2015, 3:55 am
---------------------------------------------------------
not sure what happened to my previous answer?
oh well, i'l try again.
i fitted enfield 500 springs , retainers and keepers.
fitted them 2 mm from coilbound at max lift.
having said that , i fitted 8 mm valves too , so i dont know if
the softer spring can handle the heavy original valves.
#Post#: 420--------------------------------------------------
Re: Valve springs
By: banquo Date: January 14, 2015, 7:32 am
---------------------------------------------------------
Thanks huub; is the 8mm valve a stock part off another engine,
or something custom-made?
#Post#: 422--------------------------------------------------
Re: Valve springs
By: nick949 Date: January 14, 2015, 8:57 am
---------------------------------------------------------
I mentioned the 'strong valve springs' to my machine shop when
they were replacing my valves and guides. They weren't
impressed and didn't feel they were excessively strong or out of
the ordinary. They did find the vavles a bit on the massive
side though, even though they mainly deal with industrial
diesels.
Nick
#Post#: 424--------------------------------------------------
Re: Valve springs
By: tonya Date: January 14, 2015, 11:20 am
---------------------------------------------------------
Hi Guys,
Thanks for your helpful comments.
I've Emailed both MTS and Escher to ask if they can supply a kit
of parts containing all I need to change the valves, the springs
and the guides.
I'll let you all know how I get on !
I noticed that the guides are Titanium ! Wow ! never heard of
that before.
Cheers
Tony
#Post#: 425--------------------------------------------------
Re: Valve springs
By: banquo Date: January 14, 2015, 12:01 pm
---------------------------------------------------------
Anything ending in 'ium' just has to be good!
#Post#: 426--------------------------------------------------
Re: Valve springs
By: huub Date: January 14, 2015, 12:33 pm
---------------------------------------------------------
the 8mm valves were cut from blanks.
i just ordered the valves out of the mahle catalog and made the
guides myself.
but the mahle valves are still a bit heavier than i would like.
kibblewhite makes a nice set of blanks that would be perfect, at
40 $ each they are not even expensive, ( 11-10011 and 11-10012
but i have not been able to confirm these numbers)
but just sending the head to MTS is probably a lot easier
#Post#: 2674--------------------------------------------------
Re: Valve springs
By: patentgeek Date: August 6, 2019, 5:15 pm
---------------------------------------------------------
Has anyone figured out specifications for the more
conventionally sized valves and guides so they can ordered from
Kibblewight, Mahle or some other manufacturer?
#Post#: 2677--------------------------------------------------
Re: Valve springs
By: banquo Date: August 7, 2019, 4:55 am
---------------------------------------------------------
I believe the dimensional specs may be in the workshop manual?
But my question would be, "why would you?"
The stock set-up is a known trouble spot, and better solutions
are available.
I think you might be hard pushed to find anything from Mahle,
etc. with 10mm stems; I'd hoped to have spiral inserts fitted to
my worn guides, but they only went up to 9mm....
*****************************************************
DIR Next Page