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APE HD valve springs

  • Thread starter Thread starter gearhead13
  • Start date Start date
G

gearhead13

Guest
I installed a set of hd valve springs in my head, and WOW are they stiff:eek:
I really noticed it when I bolted the cam caps on.
When you race these things do you have to helicoil all the cam bolt holes?
Just wondering.:cool:
 
there are two different stiffnesses; hope you got the street springs


VS1100S 110.17 1100 / 1150Up to 400 lift
TVSRS1100VS 1100SPRO 132.86 1100 / 1150Up to 460 lift TVSRS750
 
Last edited:
posplayr said:
there are two different stiffnesses; hope you got the street springs


VS1100S 110.17 1100 / 1150Up to 400 lift
TVSRS1100VS 1100SPRO 132.86 1100 / 1150Up to 460 lift TVSRS750
Click to expand...
Yes, I did and I doublechecked the part# when I felt how stiff they were:):eek:
My exhaust rockers looked a bit sad, so I put GSXF/R rockers on the exhaust side:cool:.
Found some bits of metal in one of the metal oiling feeder tubes on the exhaust side, probably restricting flow:mad:
 
I would make sure your not running more than 40lbs at the installed height. Any time I tried to run more than that I would chew up rockers. Finally put in some hard faced rockers this year.
 
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