Question about D15B camshaft timing/TDC
Is it not possible to line up anything for TDC on my stock D15B cam gear? Mine looks like this:

I can also get it like this:

But I can't get it like this:

(I know at least this thread https://honda-tech.com/zerothread?id=1096648 and a lot of other ones are saying to do it like a D15Z1 - VX.)
How you like those mspaint skillz, bitches? I swear I would have done a Katman style photoshop if I could have taken a pic of it.
Trying to get my timing back straight since my car won't start, but I don't know how to put the cam gear so that the right marks are lined up. And I am pretty sure this is the original cam gear that comes in this motor)
(Another reason my car might not be starting also is a recent OBD1 conversion..
But if anyone knows 100% how D15Bs are supposed to be, please post.
Thanks!
Scott

I can also get it like this:

But I can't get it like this:

(I know at least this thread https://honda-tech.com/zerothread?id=1096648 and a lot of other ones are saying to do it like a D15Z1 - VX.)
How you like those mspaint skillz, bitches? I swear I would have done a Katman style photoshop if I could have taken a pic of it.
Trying to get my timing back straight since my car won't start, but I don't know how to put the cam gear so that the right marks are lined up. And I am pretty sure this is the original cam gear that comes in this motor)
(Another reason my car might not be starting also is a recent OBD1 conversion..
But if anyone knows 100% how D15Bs are supposed to be, please post.
Thanks!
Scott
Are adjusting it to TDC and then it "pops" or rotates further than what you wanted it to? Let me know what you are trying to do, and I'll see if I can help you out. I've timed my d15b gods knows how many times. Best of luck
Oh yes, and if it does "pop" or rotate past where you need it to, have you buddy hold it in place while you setup the belt and get the tenstion on it. Secure it all down, and you'll be golden.
I'm not even messing with the timing belt yet, I think that's what you are talking about tightening....
I'm trying to get the cam gear to be at TDC so I can do the belt right.
I'm trying to get the cam gear to be at TDC so I can do the belt right.
No love for the D15Bs?? I guess I'll just put the timing somewhere in the middle so that it will start then re-do the timing later or get an adjustable gear.
Nobody with a D15B has ever done their cam timing?
Here's another thread that shows how to do it: https://honda-tech.com/zerothread?id=1015898
They all say to do it like the VX, lining up the marks with the 2 triangles on the sides that say P08.
And then this pic shows it matching up to the right triangle mark, but you can't even see the left one (if you know where to look close you can barely see it).

My main concern is, why don't the marks on the gear line up to the triangles on the sides?? And why would you just line one of them up then? And if so, which one?
Here's another thread that shows how to do it: https://honda-tech.com/zerothread?id=1015898
They all say to do it like the VX, lining up the marks with the 2 triangles on the sides that say P08.
And then this pic shows it matching up to the right triangle mark, but you can't even see the left one (if you know where to look close you can barely see it).

My main concern is, why don't the marks on the gear line up to the triangles on the sides?? And why would you just line one of them up then? And if so, which one?
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dang I really need a digital camera...
i'd go take a GOOD CLEAR shot of mine right now for y'all
my advice, if you're changing ur timing belt or something, just be VERY careful NOT to move the cam or crank at all during the change... will save u some headaches.
but yeah, would be good to know how to do it for sure.
i'd go take a GOOD CLEAR shot of mine right now for y'all
my advice, if you're changing ur timing belt or something, just be VERY careful NOT to move the cam or crank at all during the change... will save u some headaches.
but yeah, would be good to know how to do it for sure.
Yeah that would be awesome... too bad you don't have a camera.
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by whizdumb »</TD></TR><TR><TD CLASS="quote">Yeah that would be awesome... too bad you don't have a camera.
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)</TD></TR></TABLE>
wait, so the timing belt is still on?
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)</TD></TR></TABLE>
wait, so the timing belt is still on?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by whizdumb »</TD></TR><TR><TD CLASS="quote">Yeah that would be awesome... too bad you don't have a camera.
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)</TD></TR></TABLE>
sounds wierd,
also you'd have to get the belt cover off too
really, the whole prob is that you cant find where the cam is tdc..
it's ez to get the crank tdc.. no need to take the pulley off
I finally thought of something I could do... line up the cam to where I think it is TDC, then take the crank pulley off, see if the oil pump is lined up behind that and if it is, then wherever the cam is has to be TDC (assuming whoever had the motor in Japan kept it at TDC, don't see why they wouldn't)</TD></TR></TABLE>
sounds wierd,
also you'd have to get the belt cover off too

really, the whole prob is that you cant find where the cam is tdc..
it's ez to get the crank tdc.. no need to take the pulley off
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by senpai »</TD></TR><TR><TD CLASS="quote">wait, so the timing belt is still on? </TD></TR></TABLE>
Yeah, timing belt is still on.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad »</TD></TR><TR><TD CLASS="quote">sounds wierd,
also you'd have to get the belt cover off too
really, the whole prob is that you cant find where the cam is tdc..</TD></TR></TABLE>
I have both belt covers off.
OK here's what happened:
D15B swap into my HF, stayed OBD0 for a couple of days
got a CEL for TDC sensor in the distributor, decide to convert to OBD1 if I'm gonna have to get a new dist. anyway
So I do an OBD0-OBD1 conversion, now it won't start
It made a really weird noise when it was about to start, hard to describe. Kind of like a shooting/farting, hehe I can't really remember.
So I thought maybe my timing could have gotten off like I jumped a tooth or something, check the timing belt and it is pretty loose. Not so loose I can get it to slip, but loose enough so that I could pull it off the cam gear if I wanted to.
So then I am going to tighten the belt, and want to make sure everything is TDC.
I think the whole problem is I'm stupid. Looking down at the motor and not using a straight edge makes it hard to tell if the cam gear marks are even with the P08 triangles on the sides.
Now I realized it could just be my distributor timing causing it not to start, I haven't been able to set the ignition timing since it never started.
Is it possible to have the ignition timing so far off that it wouldn't even start?
This is with the distributor that came with the longblock...
Thanks for all the help guys.
Yeah, timing belt is still on.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad »</TD></TR><TR><TD CLASS="quote">sounds wierd,
also you'd have to get the belt cover off too

really, the whole prob is that you cant find where the cam is tdc..</TD></TR></TABLE>
I have both belt covers off.
OK here's what happened:
D15B swap into my HF, stayed OBD0 for a couple of days
got a CEL for TDC sensor in the distributor, decide to convert to OBD1 if I'm gonna have to get a new dist. anyway
So I do an OBD0-OBD1 conversion, now it won't start
It made a really weird noise when it was about to start, hard to describe. Kind of like a shooting/farting, hehe I can't really remember.
So I thought maybe my timing could have gotten off like I jumped a tooth or something, check the timing belt and it is pretty loose. Not so loose I can get it to slip, but loose enough so that I could pull it off the cam gear if I wanted to.
So then I am going to tighten the belt, and want to make sure everything is TDC.
I think the whole problem is I'm stupid. Looking down at the motor and not using a straight edge makes it hard to tell if the cam gear marks are even with the P08 triangles on the sides.
Now I realized it could just be my distributor timing causing it not to start, I haven't been able to set the ignition timing since it never started.
Is it possible to have the ignition timing so far off that it wouldn't even start?
This is with the distributor that came with the longblock...
Thanks for all the help guys.
well whenever u cant get ur motor to start,
I say just cover all ur bases.
of course tdc for everything,
make sure the dizzy's not rotated 180,
make sure the TPS is set right
tripple check all grounds and fuses
check ur firing order
about setting it to tdc though,
put the crankpulley on and make sure it is perfect at tdc.
then the cam gear only has to be close enough so that it fits within that one tooth region, it doesnt have to be "exact".
then put ur belt back on and tighten it down...
now move onto checking other things cuz ur set in that department..
I say just cover all ur bases.
of course tdc for everything,
make sure the dizzy's not rotated 180,
make sure the TPS is set right
tripple check all grounds and fuses
check ur firing order
about setting it to tdc though,
put the crankpulley on and make sure it is perfect at tdc.
then the cam gear only has to be close enough so that it fits within that one tooth region, it doesnt have to be "exact".
then put ur belt back on and tighten it down...
now move onto checking other things cuz ur set in that department..
yeah that's what I thought, I really hope its the ignition timing and not the conversion wiring I did on the plugs (put the OBD1 distributor pins into the OBD0 plug
I didn't think the distributor would fit into the camshaft if it wasn't perfect...
Does the TPS sensor even do anything when the car is first starting up?
I think everything else is good cause it was running before I did the distributor swap/conversion........
But yeah I think the reason I thought cam timing was off was because I wasn't getting the same angle looking into the engine bay as the diagram in HELMS
I didn't think the distributor would fit into the camshaft if it wasn't perfect...
Does the TPS sensor even do anything when the car is first starting up?
I think everything else is good cause it was running before I did the distributor swap/conversion........
But yeah I think the reason I thought cam timing was off was because I wasn't getting the same angle looking into the engine bay as the diagram in HELMS
yez the dizzy can fit in backwards,
it has a notch to make it ez to line up proper but you can put it on backwards.
if your tps is unset, or set wrong, your can can not start at all,
or run like complete and utter crap
it has a notch to make it ez to line up proper but you can put it on backwards.
if your tps is unset, or set wrong, your can can not start at all,
or run like complete and utter crap
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