UPDATE: AT bottom of thread!

Setup: D16y7 block, D16y8 head.

Problem: I set the engine to TDC (Cam gear TDC marks aligned w/ head and No. 1 Cyl. @ TDC) and the car will run "decent" above idle but will not idle. I put the timing light on it (After warmed up and in car connector jumped) and it's showing WAY retarded(lights up on TDC mark so, 12deg. retarded). Anyone ever have this issue? Could it be possible that the OE marks are incorrect? Thanks.

Phil


Modified by hondaguyef at 5:27 PM 7/5/2006

 

no the oem marks are not incorrect. why are you using a timing light? what are trying to do, adjusted the timing(as in you have a timing gear) or just out of curiosity?

 

are you trying to adjust ignition timing or cam timing...?

a timing light will show you ignition timing. There's no need to set the engine to TDC, just put the electrical pickup thingy (I forget what it's called) on the spark plug wire for the #1 cylinder. If you want to adjust cam timing (with an adjustable gear), you don't need a timing light.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philosofy1 &raquo;</TD></TR><TR><TD CLASS="quote">no the oem marks are not incorrect. why are you using a timing light? what are trying to do, adjusted the timing(as in you have a timing gear) or just out of curiosity?</TD></TR></TABLE>

To see where the timing is at. I have it aligned as to the book but, it's 12deg. retarded. The light flashes on the TDC mark not on the timing marks. If I fully advance the dizzy it runs a little smoother and yields about 11deg. timing.

Phil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">are you trying to adjust ignition timing or cam timing...?

.</TD></TR></TABLE>

I'm trying to see if it's a tooth off or not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">I'm trying to see if it's a tooth off or not. </TD></TR></TABLE>

then you shouldn't be using a timing light. That's like getting a blender so you can make toast. It's nice to have, but it won't help in this case.

Do you have an adjustable cam gear? Is there slack in your timing belt?

 

on second thought, I can see how you can use a timing light to determine that. Have you adjusted you cam or ignition timing recently?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">on second thought, I can see how you can use a timing light to determine that. Have you adjusted you cam or ignition timing recently?</TD></TR></TABLE>

I was hoping you would realize what you were saying . I just put this head on here and I have a feeling it is a tooth off even though by the book it's dead on. I'm a DOHC guy that just started messing w/ these SOHC's and I hate them already

EDIT: Stock cam gear

Phil

 

on the Y8 head...on the back timing cover there's an arrow that "lines up" with the cam markings, but doesn't line up with the top of the block...humm
i got the same damn prob and im thinking it's one tooth retarded thanks to this arrow...try to see if it is in fact retarded...i'm fixing it later, i hope..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">I was hoping you would realize what you were saying . I just put this head on here and I have a feeling it is a tooth off even though by the book it's dead on. I'm a DOHC guy that just started messing w/ these SOHC's and I hate them already </TD></TR></TABLE>

It didn't really click at first why you would be concerned with ignition timing, then I realized I'm a tard.

Are you sure you used the right marks when you put the head on? My b7 head and my z6 head use different timing marks to align them for TDC. I'm not sure if the y7 and y8 heads differ with which timing marks to use.

I love SOHC's. Just thought I should throw that in there

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EvilPinkEye &raquo;</TD></TR><TR><TD CLASS="quote">on the Y8 head...on the back timing cover there's an arrow that "lines up" with the cam markings, but doesn't line up with the top of the block...humm
i got the same damn prob and im thinking it's one tooth retarded thanks to this arrow...try to see if it is in fact retarded...i'm fixing it later, i hope..</TD></TR></TABLE>

I see that arrow but, I thought I was needing to go the opposite direction that where that arrow would want me to turn the cam ?

Phil


Modified by hondaguyef at 5:38 PM 7/4/2006

 

you are retarded one tooth obviously. advance the cam one tooth and check ignition timing again, should be 14-16° at idle. only if the idle is perfectly steady.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody &raquo;</TD></TR><TR><TD CLASS="quote">you are retarded one tooth obviously. advance the cam one tooth and check ignition timing again, should be 14-16° at idle. only if the idle is perfectly steady.</TD></TR></TABLE>

Yep, that's what I'm going to do.

 

oh, and turn the motor over manually before trying to crank, just incase you go to far, you wont damage anything. counterclockwise just so you know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody &raquo;</TD></TR><TR><TD CLASS="quote">oh, and turn the motor over manually before trying to crank, just incase you go to far, you wont damage anything. counterclockwise just so you know. </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody &raquo;</TD></TR><TR><TD CLASS="quote">you are retarded one tooth obviously. advance the cam one tooth and check ignition timing again, should be 14-16° at idle. only if the idle is perfectly steady.</TD></TR></TABLE>

if what i read is right, then i been running this bitch retarded for a long time.. bastards i bought the motor from...

damn, i just slapped my new timing belt and pump one and matched the timing mark on the cam and arrow...

man i hope it helps my low idle and power

 

Well, It's still running like **** so, I ran a compression test. 200psi on 2,3 and 4 but, 0psi in NO. 1cyl!!!!!!!!!! I'm thinking the head is bunk (bent valves). Sucks for me.

Phil

 

pull the head, sounds like a bent valve for sure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody &raquo;</TD></TR><TR><TD CLASS="quote">pull the head, sounds like a bent valve for sure.</TD></TR></TABLE>

In the process of.

 

Put the Y7 head back on and everything is peachy . Thanks for the help guys.


to the guy that sold the head to me on here (I forgot his username) and for wasted time and money

Phil

 

why not put his name out there so others dont buy from him. by the way, glad to see you figured it and, sucks you had to go through all the labor of the headswap twice and spend money in the process.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">Well, It's still running like **** so, I ran a compression test. 200psi on 2,3 and 4 but, 0psi in NO. 1cyl!!!!!!!!!! I'm thinking the head is bunk (bent valves). Sucks for me.

Phil
</TD></TR></TABLE>

so wait...u changed the timing one tooth towards the firewall and u got the same results???...bad pressure...damn now i'm worried

Had any valve train noise??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody &raquo;</TD></TR><TR><TD CLASS="quote">why not put his name out there so others dont buy from him. by the way, glad to see you figured it and, sucks you had to go through all the labor of the headswap twice and spend money in the process.</TD></TR></TABLE>

Yeah, sucks for me. I forgot his username but, I'll try to figure it out. I couldn't find the thread yesterday.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EvilPinkEye &raquo;</TD></TR><TR><TD CLASS="quote">

so wait...u changed the timing one tooth towards the firewall and u got the same results???...bad pressure...damn now i'm worried

Had any valve train noise??</TD></TR></TABLE>

Yep, did every thing I could w/ the Y8 head and it turned out to be no good. NO comprssion in cyl. 1. Put the Y7 head back on and 190+ across the board again. No valvetrain noise from the Y8 head and it's not bent/burnt valves (not visible at least).

Phil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah, sucks for me. I forgot his username but, I'll try to figure it out. I couldn't find the thread yesterday.


Yep, did every thing I could w/ the Y8 head and it turned out to be no good. NO comprssion in cyl. 1. Put the Y7 head back on and 190+ across the board again. No valvetrain noise from the Y8 head and it's not bent/burnt valves (not visible at least).

Phil</TD></TR></TABLE>

maybe a need of a valve adj. read in some places that would be the prob.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EvilPinkEye &raquo;</TD></TR><TR><TD CLASS="quote">

maybe a need of a valve adj. read in some places that would be the prob.
</TD></TR></TABLE>

Valves were adjusted properly . The head was just junk(Burn't valves).

The user I bought this from is Skunk_duece and he is denying that it is bad. He's a new user and had no vouches so, I guess that's my bad for buying from him but, he's saying I'm trying to scam him

Phil
5150