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View Poll Results: Replace working Optispark when replacing Water Pump?
Yes; Replace the Optispark "while your in there"..
33.33%
No; Leave the working Optispark alone.
66.67%
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Poll.. Replace working Optispark when doing Water Pump?

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Old Apr 26, 2015 | 03:22 PM
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Default Poll.. Replace working Optispark when doing Water Pump?

When doing the water pump it is said that you should do the Opti "while your in there". This would basically mean replacing a functional and working Optispark..

Is it worth it?

Yes or No..
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Old Apr 26, 2015 | 06:32 PM
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I personally wouldn't A good optispark is pricey just becarfule not to get it wet when removing the water pump.I forget which bolt it is but even after you think you have everything drained there is one bolt in the water pump were fluid pours out when you remove it.

Last edited by MRPVette; Apr 26, 2015 at 06:38 PM.
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Old Apr 26, 2015 | 06:57 PM
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I would if yours is a 92-94 non-vented opti.
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Old Apr 26, 2015 | 07:07 PM
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Originally Posted by PLRX
I would if yours is a 92-94 non-vented opti.
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Old Apr 26, 2015 | 07:09 PM
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Originally Posted by MRPVette
I personally wouldn't A good optispark is pricey
For the most part. Additionally, based on the plethora of "opti" posts on here, a replacement is not guaranteed to outperform an older, but working unit.

HOWEVER, I would for sure, remove the opti, clean the inside out good, and check the bearing and replace (the bearing) if necessary.
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Old Apr 26, 2015 | 07:11 PM
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Originally Posted by Tom400CFI
For the most part. Additionally, based on the plethora of "opti" posts on here, a replacement is not guaranteed to outperform an older, but working unit.

HOWEVER, I would for sure, remove the opti, clean the inside out good, and check the bearing and replace (the bearing) if necessary.
If your car was over say 75,000 miles on the original non-vented opti, would you consider it?
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Old Apr 26, 2015 | 09:01 PM
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It is indeed a non vented original Opti with 130k miles. Seems reasonable to be needing to be replaced with it being 22 years old.. But theres nothing wrong with it at the same time. I think I will just remove and clean it out and replace the bearing as suggested.
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Old Apr 26, 2015 | 10:07 PM
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Just did my 93 a few months ago, don't forget to replace the oil seals on the WP and opti. I only replaced my rotor and cap, (65k),used the vented kit from MDS, opti was clean inside. Runs great.
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Old Apr 26, 2015 | 11:38 PM
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Originally Posted by Jon Hekking
If your car was over say 75,000 miles on the original non-vented opti, would you consider it?
No. My car's original lasted until 155k. BUT, I'm good at, and enjoy wrenching, so for me, pulling the pump to get the the opti again, wouldn't be a big deal at all. 2 hours work at most. As unreliable as new opti's seem to be, if I had a good working one in my car, I'd inspect, clean, and keep running it. For people where the work far out weighs the cost of an opti, it would likely be worth replacing "while in there". And for anyone paying for labor on a water pump, it would definitely be worth it.
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Old Apr 26, 2015 | 11:46 PM
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Originally Posted by Tom400CFI
No. My car's original lasted until 155k. BUT, I'm good at, and enjoy wrenching, so for me, pulling the pump to get the the opti again, wouldn't be a big deal at all. 2 hours work at most. As unreliable as new opti's seem to be, if I had a good working one in my car, I'd inspect, clean, and keep running it. For people where the work far out weighs the cost of an opti, it would likely be worth replacing "while in there". And for anyone paying for labor on a water pump, it would definitely be worth it.
Makes sense.................... As for me, I would avoid a repeat and do the both. Maybe I'll take it to my wife's office in Park City and let you do it.
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Old Apr 27, 2015 | 12:07 AM
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Its common knowledge here that the aftermarket optis are not as good as originals, so why pull a unit thats better than what you can replace it with? If you must mess with it I'd do what jph46 did and just put the MSD vented cap and rotor on it. Most likely that will last longer than any aftermarket unit you put in there. My 94 has the original opti and 54k miles but I'm not gonna touch it until it gives me a reason to.

Last edited by Polo Vert; Apr 27, 2015 at 12:10 AM.
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Old Apr 27, 2015 | 10:41 AM
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Other way around. Replace working water pump when doing Optispark.
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Old Apr 27, 2015 | 10:51 AM
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If it's original (20 plus yrs), yes. Most difficult part of installing a water pump on the LT1 is getting the old gasket material off the motor, otherwise one of the easiest to replace.
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Old Apr 27, 2015 | 12:05 PM
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Originally Posted by MRPVette
I personally wouldn't A good optispark is pricey just becarfule not to get it wet when removing the water pump.I forget which bolt it is but even after you think you have everything drained there is one bolt in the water pump were fluid pours out when you remove it.
Pull both knock sensors for a good flushing the only way to get it all
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Old Apr 27, 2015 | 06:05 PM
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Originally Posted by Jon Hekking
Makes sense.................... As for me, I would avoid a repeat and do the both. Maybe I'll take it to my wife's office in Park City and let you do it.
I'd be happy to! I doubt you'd find a better value for that work anywhere. PM me if interested, I can give you rate, etc.
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Old Apr 27, 2015 | 10:47 PM
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Originally Posted by Tom400CFI
I'd be happy to! I doubt you'd find a better value for that work anywhere. PM me if interested, I can give you rate, etc.
Do you wrench? If so we may have met as there's very few mechanics in Utah I don't know through my time at CARQUEST, Mac Tools and Factory Motor Parts.
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Old Apr 27, 2015 | 10:54 PM
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I don't know if we've met or not, but I ran the Veh Maint shop at Canyons resort for 15 years....now I run a small shop out of my garage. Only place our paths may have crossed would be Park City Car Quest (when it was going), and MAC tools, but we never had much MAC service at Canyons.
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Old Apr 27, 2015 | 11:05 PM
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Originally Posted by Tom400CFI
I don't know if we've met or not, but I ran the Veh Maint shop at Canyons resort for 15 years....now I run a small shop out of my garage. Only place our paths may have crossed would be Park City Car Quest (when it was going), and MAC tools, but we never had much MAC service at Canyons.
Interesting, we may have crossed paths. Greg Park should be in the canyons every Tuesday in his Mac truck, he's a great guy.
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Old Apr 28, 2015 | 02:32 AM
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I'm generally of the don't fix what ain't broke mentality, and for me that applies to this as well, so long as you keep the Opti out of harms way.

Originally Posted by Tom400CFI
No. My car's original lasted until 155k. BUT, I'm good at, and enjoy wrenching, so for me, pulling the pump to get the the opti again, wouldn't be a big deal at all. 2 hours work at most. As unreliable as new opti's seem to be, if I had a good working one in my car, I'd inspect, clean, and keep running it. For people where the work far out weighs the cost of an opti, it would likely be worth replacing "while in there". And for anyone paying for labor on a water pump, it would definitely be worth it.
Yeah. I'm newer to wrenching (started more seriously about a year ago) and I just did my WP/t-stat w/o Opti and it went well. Took way longer than it needed to, but now that I've done it I could see pulling it off in a few hours myself, and like I said I'm just a shadetree mechanic at best. Having to "do it over" doesn't intimidate me in the least if the opti were to go at some point.

And like you said, if you're paying for labor... yeah. Definitely want to consider opti as well in that case. But that still pushes the parts cost up significantly.
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