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Valve specs on 750?
Posted: Fri Jun 02, 2006 4:31 pm
by izaakb
Can't seem to find this listed anywhere..
what are the intake/exhaust valve specs on the 750?
is there a concensus on if this is sufficient?
i picked up a set of F1 spec valves and seats, and I just happen to have some heads laying around...
Posted: Fri Jun 02, 2006 7:01 pm
by paso750
inlet
0.15mm
exhaust
0.20mm
this is from the owner`s manual. Interesting is that the Paso 750 workshop manual indicates 0.10mm (0.0039in) for both.
A german manual for 750SS/900SS states 0.08-0.10mm for inlet and 0.10-0.12 for exhaust valve.
Haynes for SS/Monster 600/750/900 says 0.10-0.12mm for inlet and 0.12-0.15mm for exhaust valve.
No intention to confuse, just wondering about all these differences.
G.
Posted: Fri Jun 02, 2006 8:10 pm
by izaakb
I was referring to the valve diameter, not the rocker gaps.
Anyone?
Posted: Fri Jun 02, 2006 8:15 pm
by paso750
oh, sorry.
diam. 41mm inlet (1.6141in.)
diam. 35mm exhaust (1.3779in.)
why don`t you just check the workshop manual ?
Posted: Fri Jun 02, 2006 8:20 pm
by izaakb
paso750 wrote:oh, sorry.
diam. 41mm inlet (1.6141in.)
diam. 35mm exhaust (1.3779in.)
why don`t you just check the workshop manual ?
Honestly, I looked but it was taking hours to scan through the pages.
Thanks for the info, you answered my question -- they are the same as the F1's valves. I guess I have a spare set now, assuming the stems are the same length.
Posted: Fri Jun 02, 2006 8:20 pm
by 750pheonix
Izaakb the manual is available for anyone to download... or you can buy it on cd off ebay for cash. I recommend the download.
there's the service manual and the Eper diagrams (schematics) of all the components.
Posted: Fri Jun 02, 2006 8:59 pm
by paso750
is there a concensus on if this is sufficient?
mine are 43mm/37mm but there`s nothing original anymore.
For an original or midly tuned engine the original valves are fine.
Posted: Fri Jun 02, 2006 9:07 pm
by Duc750
:funny:
Show off !
Posted: Fri Jun 02, 2006 9:28 pm
by paso750
of course not
In fact keeping the original valves didn`t make sense anymore at a certain stage :screwy:
However, I`m just saying the original combination of valves, cams etc is fine. So changing them does only make sense if you also change/modify other (interacting) parts.
Posted: Sat Jun 03, 2006 7:28 am
by Finnpaso
Porting means a LOT, when talking about valves! Also cams !!!
I have noticed this in my 907IE very clearly.... ST2 cams, porting, open air inlet, open exhaust, etc... :laugh: