valve lash

tmac2853 (25), Petruchio71 (42), Chuff (53)

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New Pipes 2 Posted by rdc142 on 16 May 2010 in Members Rides Viewed 856 times 600w X 800h 191591 bytes

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The sun in your face and the wind in your hair is always such good medicine. -- couion

[1822MC]

ok what has everyone been setting there valves at?Will call JPM but was hoping to hear it hear first.And I too tired and lazy to search for it 

[Bzar]

i think the book calls for 0.05 mm......  If you hear otherwise from Pag i would like to hear about it.

[1822MC]

That is like .002 where I live seems a little tight to me.I will post what JPM tells me.

[TD]

The exhaust should be a little looser than the intakes.  Usually no less than .004 of an inch is good for the exhaust valves and no less than  a loose .002 inches for the intakes.  The exhausts valves get hotter, expansion.  Also, due to the heat, the seats will compress inwards extending the valve stem.

[1822MC]

I had a 1961 T100SS and would set the tappets at 2 & 4 which is what I was thinking,like you said loose 2 and 4 

[1822MC]

Ok I just spoke with Chris at JPM,,,.06 to .10 mm or about .003 US

[Bzar]

Which bike are you going to be doing the adjustments on.....!? (250 or 300)
& would that even make a difference....!?? 

[1822MC]

I did 2 08 300cc spyders, one had like 1430 mi. and other had 33 mi and was only hitting on one lung loosened up valves and is running great on both sides and other one was running ok but valves were kinda tight. On both bikes I set the lash a .003 or .076 mm  my feeler gauge is SAE  .002 is like .056mm and .004 was .105mm  and JPM telling me .06 to .10 I did this for the intakes it was a "sliding fit" and exhaust was a "loose fit" Hope that helps and is clear enough for everyone.

[CarpeDeesNutts]

My 2008 spyder seems to be running stronger out of the left exhaust pipe compared to the right...is that the problem you're talking about?  I already gotta take it back to the dealer, the radiator's leaking pretty bad. 

[1822MC]

My 2008 spyder seems to be running stronger out of the left exhaust pipe compared to the right...is that the problem you're talking about?  I already gotta take it back to the dealer, the radiator's leaking pretty bad. 

Yep ask them to adjust them,because the right side is tight.Is the black tube leaking? the little one that goes to lower tub?ask them to use hose clamp in place of lame spring clip