 Cooling fan ?, Anyone know the degrees per blade? |
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| ottox914 |
 Feb 17 2006, 09:41 PM
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The glory that once was.  Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest   |
Messing around with some updates to the 914, no problem finding TDC, but my other timing marks are hard to find. As a means to double check my work, anyone know how many degrees per fan blade? Yes, I've tried Mr Search to no avail.
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| Jake Raby |
Feb 18 2006, 10:36 AM
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Pop out the number one spark plug and the corressponding valve cover.. Rotate the engine clockwise until the intake valve on #1 opens fully and then closes fully.
Then use a drinking straw in the spark plug hole to feel the piston as it travels up the bore to TDC. When you have found the point where the piston is highest and dwells there for a second that is TDC, remove the timing plug and using a nling, sharp chisel or screw driver stamp a mark. You are done and within a degree of where TDC really is if you do the job accurately. BTW, there are 4 different 914 fans- you can't use the blade method due to this unless you are a half asser! |
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Posts in this topic
ottox914 Cooling fan ? Feb 17 2006, 09:41 PM
Dave_Darling Check the photos in the "914 timing" article on th... Feb 17 2006, 10:15 PM ottox914 Good answer dave, but not exactally what I was loo... Feb 18 2006, 07:37 AM Mark Henry What system are you running? I take it you have so... Feb 18 2006, 09:01 AM swl The template on the pelican site is great tool. Y... Feb 18 2006, 09:27 AM Mueller ... Feb 18 2006, 10:47 AM McMark How about an adjustable timing light? Then you on... Feb 18 2006, 11:42 AM spare time toys Cant you count the number of blades and devide 360... Feb 18 2006, 11:47 AM Cap'n Krusty Measure the circumference of the fan, divide by 36... Feb 18 2006, 12:02 PM davep |
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