how to Replace your entire opti-spark Unit
Maybe someone can stiicky this..
first be sure your engine is off and cold before you start... 1. Drain your radiator and hoses of all fluid, (you can use the drain plugs if you like, i just took my hoses loose and did it that way) 2. remove your air intake system by loosening all clamps and hardware.. 3. remove your radiator Shroud 4. remove your radiator hoses and set them aside 5. remove your fans (besure to disconnect your fan connectors) 6. disonnect all of your hard lines from your radiator and the metal line going to your A/c container 7. after making sure all connections are disconnected from your radiator and condenser (including the sensor on the radiator for fluid levels) remove both the radiator and condenser (please be sure to be gentle with these there not cheap) 8. locate your tensioner pully and remove your serp belt. (take a picture of how the belt setup before doing so, for easy installation later) 9. take a 9/16 deep socket and take the 5 bolts you can get to out of the water pump, now there is a 6th bolt on the passenger side of the block your going to needa 6 inch extension and a short 14mm or 9/16 socket to get to the bolt behind the pully..now wiggle your water pump alittle and it should come right off 10. after taking your serp belt off, and your water pump off... grab your self a 5/8 socket (if im right) remove the 3 botls holding the balancer off (mine was stuck i had to heat it with a torch) this does not require a puller DO NOT USE THE ONES THAT WRAO AROUND THE BALANCER IT WILL DAMAGE IT! i found out the hard way. 11. after taking your balancer off get your self a marker and mark your plug wires on each side (ex from top to bottom 1,2,3,4) and remove them, now get yourself a 3/8 socket or wrench and take the 3 bolts holding the Opti-spark onto the timing cover out and the whole unit should come right out.. 12. heres a trick when putting your new opti-spark back into your motor and finding the keyway the easy way. Grab your old opti-spark and turn to the back of it... see the gear drive?? grab it and pull it out of the old opti-spark... now use that alone to findout where your keyway is in your motor and mark it with chalk or a marker. then spin your new opti-sparks gear drive to the same spot or close to it and it should slip right in, you may have to twist the unit alittle to get it to slip in right... but there you go, now put your three bolts back in and youre finished replacing your opti-spark.. now put everything back together and have fun... hope this helped, if any questions Please PM me. or post on here... if im wrong about anything orforgot anything let me know.. this is how i replaced mine. |
Re: how to Replace your entire opti-spark Unit
;)Someone posted "how to replace opti"along time ago...but good info none the less.
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Re: how to Replace your entire opti-spark Unit
You realize the drive mechanism is different on the vented (95-97) and unvented (93-94) Optis? Only the unvented is driven by the splined shaft. The vented version is driven by the cam dowel pin.
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Re: how to Replace your entire opti-spark Unit
Originally Posted by Injuneer
(Post 6727871)
You realize the drive mechanism is different on the vented (95-97) and unvented (93-94) Optis? Only the unvented is driven by the splined shaft. The vented version is driven by the cam dowel pin.
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Re: how to Replace your entire opti-spark Unit
Originally Posted by my1994z28
(Post 6727802)
;)Someone posted "how to replace opti"along time ago...but good info none the less.
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Re: how to Replace your entire opti-spark Unit
6 and 7 are totally unnecessary. Why discharge the a/c? You could even leave the fans in if you wanted to. It just depends on how much room you think you really need.
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Re: how to Replace your entire opti-spark Unit
so what do I do different on my 94?
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Re: how to Replace your entire opti-spark Unit
The fans are easy to come out so I would pull them either way- the rad/ac units do not have to come out IMO...
Another step that I do to prevent the mess is use a CLEAN wet/dry vac and get a reducer that fits into the thermostat neck on the water pump. Turn it on and drain the coolant into the vac. That way no mess when taking the water pump off, and you don't have to mess with the block drains... |
Re: how to Replace your entire opti-spark Unit
Originally Posted by detroitlt1
(Post 6729133)
so what do I do different on my 94?
and guys, as for my a/c it was empty anyway. i dont know if it has a leak or just wasnt charged. and i guess if you wanted you dont have to remove the radiator.. or condenser.. but you could remove just the radiator and leave the other.... that wouldnt hurt either.. and sorry about posting the how to replace opit again guys, i didnt see a sticky for it so i thought id try. plus i seen someone asking about it, so i figured why not... |
Re: how to Replace your entire opti-spark Unit
Originally Posted by Procharged94Lt1
(Post 6729210)
The fans are easy to come out so I would pull them either way- the rad/ac units do not have to come out IMO...
Another step that I do to prevent the mess is use a CLEAN wet/dry vac and get a reducer that fits into the thermostat neck on the water pump. Turn it on and drain the coolant into the vac. That way no mess when taking the water pump off, and you don't have to mess with the block drains... |
Re: how to Replace your entire opti-spark Unit
Originally Posted by shoebox
(Post 6729125)
6 and 7 are totally unnecessary. Why discharge the a/c? You could even leave the fans in if you wanted to. It just depends on how much room you think you really need.
but yes you are right about that. an it is a time saver as for reassmebly |
Re: how to Replace your entire opti-spark Unit
Originally Posted by shoebox
(Post 6729125)
6 and 7 are totally unnecessary. Why discharge the a/c? You could even leave the fans in if you wanted to. It just depends on how much room you think you really need.
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Re: how to Replace your entire opti-spark Unit
Here is how you replace it http://www.eficonnection.com/eficonn...omponents.aspx.
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Re: how to Replace your entire opti-spark Unit
great writeup!
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Re: how to Replace your entire opti-spark Unit
Originally Posted by detroitlt1
(Post 6729317)
great writeup!
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