Engine diagram

[Joekingiam]

Hi,
Is there a diagram available on line of the Insight motor? I would like to see a breakdown of the top end.
Joe

[ibjeff]

http://images.google.com/imgres?imgurl= ... 7%26sa%3DX

[Joekingiam]

Hi,
That diagram was ok.
My issue is a lobe on the end of the camshaft snapped off inside the water/oil housing cover and am wondering is that the casting of the camshaft or just an end piece thats removable?
Joe

[Insightful Trekker]

Originally Posted by Joekingiam

My issue is a lobe on the end of the camshaft snapped off inside the water/oil housing cover and am wondering is that the casting of the camshaft or just an end piece thats removable?
Joe

HUH

Umm Ok the camshaft is broken somewhere. Inspect the cam bearing journals in the cylinder head for scoring / damage. Commonly caused by oil starvation. Which means a thorough and complete inspection of all internal engine parts is a requirement if you expect a successful engine "build".


Check the exploded parts diagrams here:

http://www.hondaautomotiveparts.com/

HTH!

[Joekingiam]

Hi,
Standing in front of the engine to the far right on the engine top, the camshaft or part of it extends past the Valve cover into a smaller cast housing which contains an oil passage and a water passage. The end of that shaft has two small "ears" or lobes. One of those lobes snapped off. I dont know if the end of the camshaft is separate with what I described or cast as whole with them. I have not taken the valve cover off yet to determine this difference.
I do not what the purpose of this end of the shaft is anyway. So some helpful "insight" will be useful, sorry for the bad pun.
Joe

[Insightful Trekker]

A picture is worth a thousand words... and you've only typed a couple dozen so far.

Sorry, but no image is forming in my mind. Maybe another Insighter's mental imagery is better than mine.

But your gonna have to dig through the parts diagrams anyways to see how its available (e.g individually or as part of a whole something).

[highwater]

Originally Posted by Joekingiam

Standing in front of the engine to the far right on the engine top, the camshaft or part of it extends past the Valve cover into a smaller cast housing which contains an oil passage and a water passage. The end of that shaft has two small "ears" or lobes

Me thinks the camshaft is one piece.
I believe the housing in question, is the mounting for the TDC sensors. There are 2 TDC sensors. Both the same part #.


Look to the right hand side of this diagram. Sensors are #18, housing #6 in the view. #6 is called the Water Cover Outlet.

http://www.slhondaparts.com/browse.a...ViewParts=true

Randall

[Joekingiam]

Thanks highwater,
That site is excellent, it is 6 the water cover outlet.
On that end there are two passages in the cover, one circulates water, the other has oil from the camshaft flowing through with the end of the camshaft and the two lobes. What do the lobes(ears) do inside with those sensors?
The camshaft end I am talking about is one piece according to a camshaft diagram. Can that cast aluminum lobe be welded? How about JB weld? Seriously.
Joe

[Insightful Trekker]

Originally Posted by Joekingiam

Seriously.
Joe

You expect us to believe that from a member name Joeking I am

Ok Joe,

If the damage is to the water cover outlet then its a relatively inexpensive part vs welding. JB weld will usually buy you some time, but when the leak recurrs, if its not "caught" in time then the consequences can be worse than the cost of the part.

The sensors mounted there are the fuel systems TCD sensors #1 & #2 FSM pgs 11-24, & 43. Their input is critical for ignition and injector pulse timing.

Use caution when using the term "lobe" in automotive circles. "Lobes" of metal on a shaft that are used for signal generation of various sensors (usually magnetic) are more precisely called reluctors. Else it is commonly understood that this is part of the camshaft, its valves opening / closing operations and nowhere else. If these reluctors on the camshaft end are damaged, their _shape_ is critical for correct signal waveform production of the above sensors.

Within a _limited_ range of damage this signal will be unaffected. There is no specification in the manuals to determine if yours will pass muster. Only an experienced auto tech with advanced skills in fuel system diagnosis will be able to tell by looking.

Good luck.

HTH!

[highwater]

Due to the critical function of all parts in play, I would go with new replacements.

Randall