 Type IV Static Engine Timing?, Stuck in the middle of my rebuild |
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| ThinAir |
 Apr 30 2005, 04:32 PM
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Best friends  Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region 
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I'm really paranoid about making sure I get everything right as a rebuild this engine so after I got the rocker arms bolted down I double-checked the timing. It was quite clear that I'd somehow gotten the distributor shaft off by 90 degrees and I figured that I knew which direction to rotate it so I did.
As I've checked things again, I'm just not sure that I'm not 180 degrees out now that I've repositioned it. My confusion comes because both 1 & 3 are at TDC when the "0" on the fan is lined up with the case split. Both sets of valves look to me like they are closed at this point, but that doesn't seem right. So how can I tell from the position of other valves whether #1 is at TDC and on the compression stroke? I know this just got discussed in another thread, but when it came down to actually doing it on the engine it just didn't seem as clear as I expected it to be. |
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| Pugbug |
Apr 30 2005, 07:24 PM
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Member Group: Members Posts: 449 Joined: 14-February 05 From: Victoria, BC Member No.: 3,604 |
Before you go further..... There is an oil passage in the case that should line up with the one in the distributor shaft. Did you check this when you installed the distributor?
My engine is waiting to be installed, so I went and took a look. When the rotor is at the #1 cyl. notch on my distributor it is pointing directly toward the front (pulley side) The only pair of valves that are fully closed when #1 is TDC are on #1. My engine is a 1.8 litre converted to 1910cc, with a Web 86 cam, so I'm not sure if the cam makes a difference in your situation. Top pic is #3&4 cyl....next down is #1&2 Hope this helps. Attached thumbnail(s) 
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Posts in this topic
ThinAir914 Type IV Static Engine Timing? Apr 30 2005, 04:32 PM
ArtechnikA turn the engine through a few revolutions. you kn... Apr 30 2005, 06:24 PM Pugbug By the way....Here is a shot of the engine. It wil... Apr 30 2005, 07:31 PM ThinAir914 Thanks guys! The explanations and the picture... Apr 30 2005, 10:40 PM Aaron Cox OT- is that a DTM?
http://www.914world.com/bbs2/up... Apr 30 2005, 10:42 PM Pugbug No Aaron... I'm not sure who made this, but it... Apr 30 2005, 11:24 PM
Dr. Roger Before i fire up a newly assembled engine, i like ... Apr 30 2005, 11:43 PM |
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