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Ok so I got the 57H cams in on Andrews recommendation, and will be installing them soon, so we'll see how they are?
Also as I look at the bike currently I realize its halfway apart and not much further to go if I wanted to bore the cylinders and go up to a 98"? I've read up a little on it, my question is would it be worth the price for the gain achieved, and would it work well with the 57H cams I have?
Setting your piston to deck to deck height at zero, 0.030 head gaskets, and shaving your heads will give you a nice compression bump to work with that cam. Blueprinting what you have sometimes gives you enough.
Ok so I got the 57H cams in on Andrews recommendation, and will be installing them soon, so we'll see how they are?
Also as I look at the bike currently I realize its halfway apart and not much further to go if I wanted to bore the cylinders and go up to a 98"? I've read up a little on it, my question is would it be worth the price for the gain achieved, and would it work well with the 57H cams I have?
That's what I did. Get some domed pistons and bore the cylinders to 97" targeting about 10-10.2 compression with the .030 head gaskets. The 57's want the compression bump. Cost is pretty minimal if you order the pistons then take the cylinders and pistons to a machinist to grind to proper fit. Cost me about $600.
That's what I did. Get some domed pistons and bore the cylinders to 97" targeting about 10-10.2 compression with the .030 head gaskets. The 57's want the compression bump. Cost is pretty minimal if you order the pistons then take the cylinders and pistons to a machinist to grind to proper fit. Cost me about $600.
Yeah that's what I was wondering if the 57's would still be a good choice if I go bigger. Hopefully be able to do it all at once in the next couple weeks, as long as I can get the money together.
The 37H and 57H have the same cam timing, the 57H has a higher lift. I had an Evo with the EV-27 cam with almost identical timing. At part throttle it was smooth throughout the RPM range. If you grabbed full throttle below about 2,500 RPM (I didn't have a tach) it was flat. At highway speeds in top gear all I did to pass was add throttle, the power was right there. It sounds like you are running at mid to high RPM's when you're riding with your buddies. That being the case the only time the engine will be in "bagger" range is leaving from a stop in first gear. After that you will be at 2,500 plus where the 37H and 57H shine. Enjoy the build, ride safe.
Ok, so I got the SE heavy duty clutch spring installed while Im waiting on the other parts. Now I dont know if its the COVIDs fault or what, but with the new spring installed I can barely pull the lever. Is the SE clutch spring that much stiffer than stock? Also if it is in fact just me, will switching back to stock be that much of an issue? I know Ive read in other threads that switching to the heavier clutch spring was recommended when upgrading cams, but is it necessary, and if I keep it stock whats the downside, or problems that may arise?
Ok, so I got the SE heavy duty clutch spring installed while Im waiting on the other parts. Now I dont know if its the COVIDs fault or what, but with the new spring installed I can barely pull the lever. Is the SE clutch spring that much stiffer than stock? Also if it is in fact just me, will switching back to stock be that much of an issue? I know Ive read in other threads that switching to the heavier clutch spring was recommended when upgrading cams, but is it necessary, and if I keep it stock whats the downside, or problems that may arise?
I'd leave the stock in and just see if the clutch slips without the heavy duty spring. The heavy spring is for when you are generating enough torque that the clutch plates slip and you need more pressure on them,
I'd leave the stock in and just see if the clutch slips without the heavy duty spring. The heavy spring is for when you are generating enough torque that the clutch plates slip and you need more pressure on them,
Yeah that was kinda the thought I had. I looked into the different spring rates, and my local dealer doesn't have any other than the heavy duty one. I was thinking about throwing one in from one of the 103's which would be heavy than mine is now but not as hard a pull as the SE one. I know I lost a lot of muscle through all of this but I gotta give credit to the ones that are rocking the SE clutch plate, that pull is no joke.
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