7

It's either in time, or it isn't. You can rotate cams on a non-interference engine in any direction, all you want. However, in general I'd suggest it's best to only rotate only in the natural engine direction. If you are off by one tooth, backing up one tooth on a cam is not going to get you into "interference" territory. I always crank the engine over ...


5

The F22B2 Honda motor is an interference motor. What this means is, the pistons and the valves share the same physical space inside the engine just not at the same time ... well, that is if everything is timed correctly. What most likely happened to you is you've bent exhaust valves. When the cam was no longer spinning like it should have been, the valves (...


4

Simple engine dynamics of a 4-stroke engine dictates as long as the timing marks are aligned for the engine, it will take two complete rotations of the crankshaft for things to be aligned again. As long as the marks are aligned in one of the two rotations, there is no issue. The crank position indicator shows when the #1 piston is at top dead center (TDC). ...


3

The raised rear lip is used to align the timing belt. It only needs one of these to keep the belt aligned, thus the difference.


2

So, changing the spark timing is easy as you state and the main issue is detonation as you point out - if you stick to the range 10 to 14 BTDC then the stresses should be fine. The manufacturer will have tested to the extreme and chosen a setting giving the "best" performance for what they decided was suitable for the car depending on the quality / range of ...


2

First, verify the vacuum gauge and the port you are connecting to. 5in is very low vacuum and I suspect the car would idle like crap. Vacuum is produced by the engine efficiently trying to pump air and the carburetor choking it off. Engine condition (piston, rings, heads), timing chain (advanced/retarded) affect how much vacuum it produces. Ignition ...


2

Most (all) engines will have timing marks and usually manufacturers provide locking mechanisms or simple holes on the pulley that locate to a hole so a dowel or pin csn be used to locate the position precisely. This applies to crank and cam pulleys. On some engines, the crank is located by a dowel or pin then the cam is positioned using a dial gauge - once ...


2

A camshaft can only be attacked to the camshaft sprocket in 1 orientation which you can see when you look at the camshaft sprocket. (See below image for an example) It is important to know the position of the camshaft relative to the crankshaft, so the timing is correct.


1

On a 4-stroke engine, when #1 is at TDC, it's at TDC. It doesn't matter at that point if the cam(s) are not connected. Once you align the cam timing mark(s), then you'll set which stroke you are on. Caveat: Be careful when you're setting the timing and moving the crank without the cams connected. You run the distinct risk of damaging something if it is an ...


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