Re: Easiest way to find TDC without removing timing cover
[Re: W5Duster436]
#258861
03/19/09 02:10 PM
03/19/09 02:10 PM
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Joined: Dec 2007
Posts: 7,759 So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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Quote:
Let's say that the balancer did slip and is off a tad. I rotate to 10* BTDC clockwise and then put on the piston stop. Now I go counter clockwise and it should stop exactly 10* ATDC when it hits the stop. Since the balancer is not likely to slip while doing this manually shouldn't it always come up equidistant on the other side of the starting point?
If you could put the stop in and have it stop at 10 before, rotate and have it stop at 10 after... then your balancer did not slip. Having a Stop be able to stop at 10 is not as easy as writing it. Plus using this method if the balancer is off you will now need to use a new place on the pointer as zero vs. just using the new mark on the crank (the way I just typed it above).
Marking the balancer is a better method.
Quote:
I can see it being off a little bit just from the chain tension when one goes from clockwise to counterclockwise?
Chain tension has nothing to do with it. The pointer is not connected to the chain, the balancer is not connected to the chain either.
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Re: Easiest way to find TDC without removing timing cover
[Re: W5Duster436]
#258866
03/19/09 03:09 PM
03/19/09 03:09 PM
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Joined: Dec 2007
Posts: 7,759 So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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Well another thing to consider is valve springs and valve float. How strong is the springs and and how old are they?
Be careful going with a larger line size with a marginal pump. It can make things worst.
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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Re: Easiest way to find TDC without removing timing cov
[Re: W5Duster436]
#258870
03/19/09 03:40 PM
03/19/09 03:40 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
master
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master
Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
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If you do need to change the springs there is a tool available that allows you to leave the head on. With it you end up changing 4 springs on 2 different cylinders at the same time. It only takes about an hour to change all 16. Mancini sells the tool. Rule of thumb: If you're running a 5/16 fuel line, you only need a single spring. If you're running a 3/8 fuel line you need a double spring. Oh, and don't forget to line up the dots on the springs and retainers otherwise your spring timing will be retarded.
Last edited by 64Post; 03/19/09 03:41 PM.
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Re: Easiest way to find TDC without removing timing cov
[Re: W5Duster436]
#258875
03/19/09 03:51 PM
03/19/09 03:51 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
master
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master
Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
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Quote:
Quote:
If you do need to change the springs there is a tool available that allows you to leave the head on. With it you end up changing 4 springs on 2 different cylinders at the same time. It only takes about an hour to change all 16. Mancini sells the tool.
Rule of thumb: If you're running a 5/16 fuel line, you only need a single spring. If you're running a 3/8 fuel line you need a double spring. Oh, and don't forget to line up the dots on the springs and retainers otherwise your spring timing will be retarded.
At this point I'd rather take the engine out and get rid of the trw 2232 pistons and buy some eddy heads.
I like that line of thought much better...
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Re: Easiest way to find TDC without removing timing cover
[Re: RapidRobert]
#258877
03/19/09 04:04 PM
03/19/09 04:04 PM
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Joined: Dec 2007
Posts: 7,759 So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
|
Quote:
Quote:
Think about it. Even if the chain was missing it would not affect finding TDC.
Since you put it like that it took ~ 3 seconds of thinking about it to figure it out. I am so embarrassed, I'm thinking of cam degreeing (I think )
That's ok I did drink my coffee this morning
Besides the other problem I have with using the marks on the timing tab is...
What if the balancer moved more than the timing marks allow?
Lets say it moved 30 degrees and the timing marks only go 12 before and 12 after. You use the 10 btdc method and go the other way and the balancer stops before registering on the timing marks? What do you do then?
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Re: Easiest way to find TDC without removing timing cover
[Re: RapidRobert]
#258879
03/19/09 04:21 PM
03/19/09 04:21 PM
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Joined: Dec 2007
Posts: 7,759 So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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I guess we just work differently. To me it is easier to put a piece of tape on the balancer than it is to make the piston stop at 10 BTDC.
But I don't think it moved either...
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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Re: Easiest way to find TDC without removing timing cover
[Re: HealthServices]
#258880
03/19/09 04:33 PM
03/19/09 04:33 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Actually I put the marks at 10BTDC then thread the tool into where it is snugly hitting the piston but yes point taken.
live every 24 hour block of time like it's your last day on earth
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