Long story short: rebuilding an R motor, it was assumed to be 100% stock. Went to time and install timing belt, and found that the cams that came with the motor line up like this with the cam holders in place




Anyone have any idea as to what cams these might be? I seached the found some threads on identifying cams. The closest these match up to is 89-91 b16a, but whats with the crazy timing?

 

are you sure you know what you are doing???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">are you sure you know what you are doing???</TD></TR></TABLE>

5th one I've done a full rebuild on, countless others where I've just done a timing belt or cams. This is the first one I've encountered that has been like this.

I know the stock gears are supposed to be lined up when tdc especially when using the cam holders. But as you can see, the holders are in place and it still ends up like this... I'm baffled to say the least as I've installed many aftermarket cams and none of them look like this.

 

wtf?

 

hahaha

 

you realize vtec cams dont have holes in them like the ls do to hold them for cam timing right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EARLdaSQUIRREL &raquo;</TD></TR><TR><TD CLASS="quote">you realize vtec cams dont have holes in them like the ls do to hold them for cam timing right?</TD></TR></TABLE>

Factory B-series VTEC cams DO have TDC alignment holes.

 

I've seen that before once when I was working on a B17 in a car that my friend had just purchased. I didn't know any history on the motor but I assume were stock cams as they had the holes in them like to line up to TDC like factory cams.

However, when the holes were lined up with the cam caps, they sat advanced like in your picture. When I started up the motor, the car idled horribly so I just set them to TDC using the arrows on the cam gears and fixed that problem.

Based on this previous experience, I would guess they may be B17 cams?

 

pop the distrubitor cam cap off and look at the engravings and show us what they are.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eva01 &raquo;</TD></TR><TR><TD CLASS="quote">Based on this previous experience, I would guess they may be B17 cams? </TD></TR></TABLE>

Thanks for the input... Makes me question the history of this car even more!


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbociv910 &raquo;</TD></TR><TR><TD CLASS="quote">pop the distrubitor cam cap off and look at the engravings and show us what they are.</TD></TR></TABLE>

 

taken from here: https://honda-tech.com/zerothread?id=710175

89-91 b16a cams, perhaps?

 

^that ,or the holes are off.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by letsdrive &raquo;</TD></TR><TR><TD CLASS="quote">^that ,or the holes are off.....</TD></TR></TABLE>

Or the head/Block was decked an inch ( thats a rough estimate )

EDIT , On a second look mabye more like a half inch

 

but what would decking have to do with the cams not lining up to their respective holes?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx(gator) &raquo;</TD></TR><TR><TD CLASS="quote">but what would decking have to do with the cams not lining up to their respective holes?</TD></TR></TABLE>

it wouldnt... and my bad about my statement earlier i guess it has been awhile since i have used oem cams