Saturday, September 13, 2008

So last we wrote

I had a valve train problem, which the solution took some money. My first work study check will be sent out on the 25th and i have well over 20 hours at 6.55 in addition to a 20 dollur tip from doing a brake job for the welding instructors and 29 from scrap metal. hopfully it will be close to the 186.95 I need for the first installment of parts for my valve train.

If all goes well next weeks pay peroid I'll order my second order which will consist of roller rocker arms and mounting studs.(very nearly 200 on the second order as well)

After that ill Have an anally excessive number of assembly pictures and maybe some Videos Which will be embedded here for your veiwing pleasure. One that you will absolutly get is the start-up and break in of the engine, thats a given.

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)