Link and Sync issues 1988 Mercury Black Max 175

[shankforce]

I have been following the link and sync in the Merc manual some of it I do not understand fully.
One question is the first step when it says TDC the #1 piston and set fly wheel to 462 I think it means when the piston is all the way up is this true.
Another question is with the trigger screw on top when hit with the timing light what # should this be on I thought 20 BTD is this correct?
And when you are timeing with all plugs out but #1 are you supposed to crank the engine to get the reading.
What readings are you suposed to get on the other screws?
I have been trying this for a while now and I cant seem to get it right I think I am not getting something.

 

[Chris1956]

Re: Link and Sync issues 1988 Mercury Black Max 175

Shank, Merc uses the .464" BTDC to make sure you have a precise setting for the TDC mark. As the piston hits TDC, it pauses at that point, while the flywheel still turns, due to bearing clearance and the nature of the crank and rods. Merc wants the TDC mark to be at the spot where the piston just stops.

The link and Synch requires you turn the flywheel until it just hits the .464" measurement on the dial indicator setting on #1 piston. The #1 piston is nearly 1/2 inch from TDC. Now set the Timing pointer to read .464 BTDC and you have precisely marked TDC. You need to look up the spec for the idle pickup timing, but on those V6s it is usually a few degrees ATDC. Max timing is another spec you need to look up.

Normally you set the timing with plugs 2-6 out, so the motor won't start. Once timing is set on #1 plug, the rest are automatic.

 

[shankforce]

Re: Link and Sync issues 1988 Mercury Black Max 175

Thanks for the response I will make sure I have this right. Before I get back with the results.

 

[philbur]

Re: Link and Sync issues 1988 Mercury Black Max 175

You absolutely MUST use either a dial indicator, or a vernier caliper to get this value....it is a critical step to ensure your timing is set right during idle and WOT timing adjustments@cranking speed. Watching to see when the piston stops its upward/outward travel may be too speculative and can vary by 10 degrees or more.

Once you are sure the 462 or 464 is reached you must loosen the two set screws on the pointer and adjust it to read Zero. Once this is done you know for sure that the following adjustment procedures for obtaining timing specs for idle ATDC@cranking and the WOT BTDC@cranking are pretty darn close to the required spec.

 

[Chris1956]

Re: Link and Sync issues 1988 Mercury Black Max 175

Phil, When you have used the dial indicator to set the motor to .464 BTDC, the timing pointer should read .464 BTDC, right?

 

[shankforce]

Re: Link and Sync issues 1988 Mercury Black Max 175

philbur,
That was the main point I was missing you nailed that part. I was not setting the pointer to 0 on the flywheel cover after I set TDC.
Another 2 questions I have is how do I know I am getting enuff oil to the motor and where is it ajusted the alarm is flaky I dont trust it.
For a decarb I read that you use a remote tank with 1 gallon of gas and 1 can of sea foam and run it. Is this a good way of doing it I have all that stuff to get it done.

 

[j_martin]

Re: Link and Sync issues 1988 Mercury Black Max 175

philbur,
That was the main point I was missing you nailed that part. I was not setting the pointer to 0 on the flywheel cover after I set TDC.
Another 2 questions I have is how do I know I am getting enuff oil to the motor and where is it ajusted the alarm is flaky I dont trust it.
For a decarb I read that you use a remote tank with 1 gallon of gas and 1 can of sea foam and run it. Is this a good way of doing it I have all that stuff to get it done.

Don't forget the 2 cycle oil in the clean out gas mix. Also, it works well, but is hard on neighbors and wives, especially if the windows are open or there's clothes on the line. (ask me how I know)

When I do it, I idle at least half a gallon of this witch's brew through the engine, which takes fast idle to keep it running. Then I let it sit and soak overnight. Fire it up on the regular stuff and clean it out. If you plan to change the plugs, wait till you're done with the cleanout.

hope it helps
John

 

[shankforce]

Re: Link and Sync issues 1988 Mercury Black Max 175

I have oil injection so I do not need to add oil to the remote tank right?

 

[j_martin]

Re: Link and Sync issues 1988 Mercury Black Max 175

I have oil injection so I do not need to add oil to the remote tank right?

Nope, VRO does it for you. The comment is that the SeaFoam is not a sufficient lubricant. Be sure it's oiled.

hope it helps
John

 

[shankforce]

Re: Link and Sync issues 1988 Mercury Black Max 175

I tried to move the slider on the flywheel cap to 0 from the .464 mark it is to far to make it so do you just get tdc and put the flywheel on 0?
Also question on a remote starter I picked one up but where do you hook this up to? Could not start remotely.