[DeTomaso] Timing Problem

Sat Mar 1 17:53:36 EST 2008

Art,

What you are talking about was called static timing back in the day. You
could get the timing close with a test light wired in. As you turned the diz
the points would open and the light would go out. In this world you are
looking to make sure the rotor is just pointing at the #1 wire on TDC. All
this is telling you is that the diz is in right.

When the motor is running all kinds of other things come into play. You may
get some advance at idle depending how things are hooked up.

Are you sure you are getting good spark? Did you have the key on when you
adjusted the valves?

Larry - Cleveland

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Art Stephens
Sent: Saturday, March 01, 2008 5:40 PM
To: detomaso at realbig.com
Subject: Re: [DeTomaso] Timing Problem

     If my ignition had been timed to 16 degrees at idle with the vacuum 
line plugged,  what should I see with the engine not running while looking 
at the timing pointer and #1 piston at TDC on the compression stroke? 
Should the rotor be pointing 16 degrees before the #1 terminal on the cap or

should it be pointing straight to the #1 terminal?  I guess this is another 
way of asking if there is supposed to be any advance taking place at idle?

Art

----- Original Message ----- 
From: "Art Stephens To: List-Subscribe:" 
<artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
listinfo/detomaso>; 
"Sender: detomaso-bounces at realbig.com" 
<mailto:detomaso-request at list.realbig.com?subject=subscribe>
Sent: Saturday, March 01, 2008 2:29 PM
Subject: Re: [DeTomaso] Timing Problem

>        Thanks Larry,  I looked at the pin and it looks to be in place,  I
> can see all the way thru it.  I have disconnected the battery and will try
> again.
>
> Art
>
>
>> I do like the pin idea. Pull the diz to
>> take a look.
>>
>> Larry
>>
>> -----Original Message-----
>> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
>> On
>> Behalf Of Art Stephens
>> Sent: Saturday, March 01, 2008 5:19 PM
>> To: detomaso at realbig.com
>> Subject: Re: [DeTomaso] Timing Problem
>>
>>     Even if I screwed up the valve adjustment,  that should have no 
>> affect
>> on ignition timing should it?
>>
>> Thanks,
>> Art
>>
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Art Stephens To: List-Subscribe:"
>>
<artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
>> listinfo/detomaso>;
>> "Sender: detomaso-bounces at realbig.com"
>> <mailto:detomaso-request at list.realbig.com?subject=subscribe>
>> Sent: Saturday, March 01, 2008 2:13 PM
>> Subject: Re: [DeTomaso] Timing Problem
>>
>>
>>>     It passed the straw test.  So it does appear that 0 degrees on the
>>> timing mark is in fact TDC on #1.
>>>
>>>
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Art Stephens To: List-Subscribe:"
>>>
>>
<artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
>> listinfo/detomaso>;
>>> "Sender: detomaso-bounces at realbig.com"
>>> <mailto:detomaso-request at list.realbig.com?subject=subscribe>
>>> Sent: Saturday, March 01, 2008 1:35 PM
>>> Subject: [DeTomaso] Timing Problem
>>>
>>>
>>>>     I adjusted my right side, (1-4), valves on my hydraulic roller cam
>>>> engine with adjustable roller rockers.  I had the distributor cap and
>>>> wires off during the project.  Now my timing is all screwed up.  My
>>>> timing
>>>> light shows that I am way retarded and the engine now runs bad where it
>>>> ran smooth before the work.  I am stumped!  I didn't touch the
>>>> distributor
>>>> adjustment.  I have the MSD adjustable timing control.  I thought I had
>>>> the distributor set a 16 degrees BTDC.  That is not what I am seeing.
>>>> The
>>>> light shows 10 -15 degrees ATDC?  With the engine not running,  the
>>>> rotor
>>>> is pointing to the #1 terminal on the cap as the balancer shows 0
>>>> degrees
>>>> advance.  I disabled the adjustable timing control to see if it was the
>>>> problem and I saw no improvement.  I am going to go get a plastic straw
>>>> and stick it down the #1 cylinder and see what the timing mark on the
>>>> balancer shows with the piston at TDC.  I took the Duraspark II
>>>> distributor apart and could find no problems.  The distributor gear
>>>> appears to be pinned in its proper place.  Spark plug wires all appear
>>>> to
>>>> be going to the correct cylinders.  I thought it must have been
>>>> something
>>>> stupid I did,  but I can't figure it out.  It has a new harmonic
>>>> balancer.
>>>> The only thing I can think of is that maybe one of the timing gears has
>>>> moved on its shaft?  Help!
>>>>
>>>> Art
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