C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1996 LT1 Convertible Starter Replacement

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Old Jun 15, 2021 | 04:40 PM
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Default 1996 LT1 Convertible Starter Replacement

We need to remove the starter on my neighbor's 1996 LT1 convertible and at a glance the clearance looks pretty tight under there with the exhaust so close. Anyone have any tips or suggestions before we begin this job? It sounds like the solenoid is bad. When the key is turned we hear one click each key turn until the solenoid engages and the starter activates. When working, the starter sounds strong. Convertibles have the "X" brace under the exhaust so does the brace and exhaust need to be dropped for clearance or can the starter be removed and wiggled out with everything intact?
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Old Jun 15, 2021 | 04:51 PM
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Originally Posted by TiIngot
We need to remove the starter on my neighbor's 1996 LT1 convertible and at a glance the clearance looks pretty tight under there with the exhaust so close. Anyone have any tips or suggestions before we begin this job? It sounds like the solenoid is bad. When the key is turned we hear one click each key turn until the solenoid engages and the starter activates. When working, the starter sounds strong. Convertibles have the "X" brace under the exhaust so does the brace and exhaust need to be dropped for clearance or can the starter be removed and wiggled out with everything intact?
Have you done complete diagnostics of the system before deciding to remove the starter? Your intention is to maybe do a solenoid plunger, contacts etc to the starter you have or ....?

Not that it should matter but how many miles?

Last edited by WVZR-1; Jun 15, 2021 at 04:54 PM.
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Old Jun 16, 2021 | 08:55 AM
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I had to pull the starter on my 92 automatic Vert. It was tight getting it out because of the transmission lines. I didn’t have to drop exhaust or the x brace. I don’t know if they changed it for the 96 Vert or not. Kevin
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Old Jun 17, 2021 | 11:32 AM
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He got the job done yesterday. Nothing had to be removed to get at the starter. The one 14MM starter bolt was a little hard to get at because the Cat heat shield was close but a 3/8" extension squeezed through OK. Both starter bolts required a breaker bar to snap them loose and the transmission lines had enough give to just push them aside enough to drop the starter out. Thanks for the reply's.
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Old Jun 17, 2021 | 11:40 AM
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Originally Posted by TiIngot
He got the job done yesterday. Nothing had to be removed to get at the starter. The one 14MM starter bolt was a little hard to get at because the Cat heat shield was close but a 3/8" extension squeezed through OK. Both starter bolts required a breaker bar to snap them loose and the transmission lines had enough give to just push them aside enough to drop the starter out. Thanks for the reply's.
Out and back in with a reman or what? Just out? If there's been a reman purchased I wouldn't part with the 'core'!
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Old Jun 17, 2021 | 03:18 PM
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Originally Posted by WVZR-1
If there's been a reman purchased I wouldn't part with the 'core'!
hijacking post.
Why not? I have mine that I took out of my 96 when I put a reman in.
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Old Jun 17, 2021 | 03:22 PM
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Originally Posted by puterami
hijacking post.
Why not? I have mine that I took out of my 96 when I put a reman in.

I'd say that if you saved yours you've answered the question! If you've still doubt, think about it for a while longer!
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Old Jun 17, 2021 | 04:05 PM
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Originally Posted by puterami
hijacking post.
Why not? I have mine that I took out of my 96 when I put a reman in.
While WVZR-1 decided to avoid answering your question with the actual answer, the actual answer is that in general the Nippondenso units don't fail as a unit. That is, their coil windings aren't what go bad. The plunger system doesn't go bad. What goes bad are the brushes, which is true of any brushed motor over long periods of time, and the plunger itself, which can also be replaced easily. Total cost of the parts to get an original Nippondenso back working again is around $25. So it's far better to refurbish the original unit than it is to install a cheap reman that may actually have QC issues down the line.
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Old Jun 17, 2021 | 04:23 PM
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Originally Posted by Nomake Wan
While WVZR-1 decided to avoid answering your question with the actual answer, That is, their coil windings aren't what go bad. The plunger system doesn't go bad. What goes bad are the brushes, which is true of any brushed motor over long periods of time, and the plunger itself, which can also be replaced easily. .
I avoided 'nothing' I left it to the '@Puterami' to figure it out. I left him with a 'think about it'! 'denso brushes will often do at least 2 refurbs! Maybe you can 'think about it also' for just awhile longer! You missed the most common point of failure in a 'denso.

Last edited by WVZR-1; Jun 17, 2021 at 07:30 PM.
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Old Jun 17, 2021 | 08:25 PM
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Originally Posted by WVZR-1
I avoided 'nothing' I left it to the '@Puterami' to figure it out. I left him with a 'think about it'! 'denso brushes will often do at least 2 refurbs! Maybe you can 'think about it also' for just awhile longer! You missed the most common point of failure in a 'denso.
Or maybe you could realize that the whole point of a forum such as this is to not only help those asking the questions, but those lurkers both now and well into the future who may want to know the answers as well. Being coy helps no one. Hopefully you figure that out.
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Old Jun 17, 2021 | 09:23 PM
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Originally Posted by puterami
hijacking post.
Why not? I have mine that I took out of my 96 when I put a reman in.
If you believe your starter was likely an 'original' it should still have a label on it. Take a snapshot of that label and post it. If it's NOT an original it could still potentionally have a label so post a snapshot of whatever you find.

Last edited by WVZR-1; Jun 17, 2021 at 09:24 PM.
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Old Jun 21, 2021 | 09:47 AM
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Eh, it must not be original. No label, but the body has a stamp. I'd say the starter has been replaced before.

"Delco Remy 10455709"
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Old Jun 21, 2021 | 10:34 AM
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Originally Posted by puterami
Eh, it must not be original. No label, but the body has a stamp. I'd say the starter has been replaced before.

"Delco Remy 10455709"
Stamped or casting? An original I would have expected a label with that # and also the 'denso #. If yours has a casting 10455709 on the drive-end housing it would be safe to assume that it should be considered reasonable to consider a DIY for future. I thought I had a snapshot of a label for L98/LT1 & LT5 'denso starter labels but it's likely on an older PC. I'll look but if you're interested in parts then shopping for 128000-8111 Nippendenso might offer up more appropriate parts information.

I buy starter motors for my Kawasaki FS/FH ZTR engines from these guys but they do have parts listings for that 'denso. I may have bought a couple plunger & contact packages from them but years ago. I should also have complete parts listings for the internals.

** It appears that dbelectrical.com no longer direct links to a BOM for this starter. There are others that still do I believe. I left the link because I'm quite sure they actually do have the parts most often used for DIY

https://www.dbelectrical.com/product...-10455703.html

Last edited by WVZR-1; Jun 21, 2021 at 11:50 AM.
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Old Jun 21, 2021 | 10:47 AM
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That's good info about the original starter. I kept mine when I replaced it a few months go.

Gonna have to remember to take a look at it to see if it's actually the original.

I always keep all of my orignal parts.
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Old Jun 21, 2021 | 01:45 PM
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Wow, that's a good price with free shipping for that starter.

The one that came out of mine is definitely a reman. Picture below of the only label. Yes, my bad, the number is cast, not stamped on the drive-end housing.
The issue with this starter is that it appears that the bendix started going out. Now and then I when I would go to start it, I'd get the awful gear clash a time or two until it would engage properly. After about ten times, I replaced it since it's cheaper/easier than a flywheel. :-)





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Old Jun 22, 2021 | 05:14 PM
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Originally Posted by WVZR-1
Stamped or casting? An original I would have expected a label with that # and also the 'denso #. If yours has a casting 10455709 on the drive-end housing it would be safe to assume that it should be considered reasonable to consider a DIY for future. I thought I had a snapshot of a label for L98/LT1 & LT5 'denso starter labels but it's likely on an older PC. I'll look but if you're interested in parts then shopping for 128000-8111 Nippendenso might offer up more appropriate parts information.

I buy starter motors for my Kawasaki FS/FH ZTR engines from these guys but they do have parts listings for that 'denso. I may have bought a couple plunger & contact packages from them but years ago. I should also have complete parts listings for the internals.

** It appears that dbelectrical.com no longer direct links to a BOM for this starter. There are others that still do I believe. I left the link because I'm quite sure they actually do have the parts most often used for DIY

https://www.dbelectrical.com/product...-10455703.html
Originally Posted by puterami
Eh, it must not be original. No label, but the body has a stamp. I'd say the starter has been replaced before.

"Delco Remy 10455709"
I took a couple of snaps of my old one. It's pretty dirty. It's off of my '90. But it's original. Lasted over 30 years.





Last edited by Natty C; Jun 22, 2021 at 05:37 PM.
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