Showing posts with label ratainer. Show all posts
Showing posts with label ratainer. Show all posts

Wednesday, October 15, 2008

parts came today



keepers, springs, retainers, everything a good cam needs to perform. in addtion a timing set to tie the crank and cam together grand total 175 bucks of work-study money. only 425 left to earn and spend and 200 of it is sitting in my wallet waiting to be transfered onto the wired card and ordered with.



This Is the basic assembly you look at under the vlave covers, the only thing its missing is the valve itself and the cylider head(I'll show ya later after the long week-end)

Tuesday, September 2, 2008

Valve float

Yes you read it right, Ive found more problems with some of my parts. the valve springs have a closing force which is less then the requirement for my cam shaft. 150lbs as opposed to 230lbs. This means the missing closing force has to find a place to be made up at, which in the form of valve float. valve float is the valves staying open too long at high RPM because the springs cant close the valves quick enough to ride over on the cam ramps hence the valves dont fully close. were it a stock cam i wouldnt have much problem with it as it would be low duration and realtivly low lift, but at .447 lift (we're talk tenths of an inch here not thousanths) we're watching our street machine chew up a lobe.
Good news, Ive potetnially got a Reputation + as ive Designed an engine for a Real life client of my instructor and hopfully he likes it(400 ft/lbs of torque at low RPM, he Better like it. stump pullers for the win)