Starter/flexplate alignment
Starter/flexplate alignment Hey guys, i just wired up my starter on my conversion project, when i tried to see if everything matched up… starter/flexplate by spinning it over, the starter hits the flexplate instead of engaging with it, i don't know of anyone needing to shim a ls1 starter and this looks to be too much to shim, its a 98 LS1 with a Advance adapters flexplate part # 712500A, stock ls1 starter, any advice?
I'm not saying it isn't possible but I've never heard of a need to shim a Gen III / IV engine starter.
Is the battery fully charged? A low battery may not allow the starter to fully engage.
Are you sure the starter is good?
I'm assuming the donor vehicle was wrecked with these:
Is the starter seated properly against the block (not bound against something) or have a cracked housing?
Are the bolt holes / threads damaged on the block?
Are the bolts straight?
Is the battery fully charged? A low battery may not allow the starter to fully engage.
Are you sure the starter is good?
I'm assuming the donor vehicle was wrecked with these:
Is the starter seated properly against the block (not bound against something) or have a cracked housing?
Are the bolt holes / threads damaged on the block?
Are the bolts straight?
this engine was removed from my daily driver 6spd 98 z28 a few weeks ago, it never had a starting problem , it turned over with no noise or issues, i just thought of something, are the starters from 6 spd's to automatics the same?, and yes i have a fully cgarged yellow top, starter fully seated, almost look like the flexplate diameter is too large.
I would remove the flexplate and compare it to the flywheel from the original setup. If the diameter is too large, not a lot you can do beyond return the flexplate.
I always use GM flexplates that come with the engines or get them from the salvage yard. I've only used one aftermarket flexplate and it was a TCI SFI approved ($$$) which went on a car I was building for someone else because that is what he wanted.
I always use GM flexplates that come with the engines or get them from the salvage yard. I've only used one aftermarket flexplate and it was a TCI SFI approved ($$$) which went on a car I was building for someone else because that is what he wanted.
well this is what i found today, tried the same thing first by just spinning the starter, Same result, so i turned the flexplate 90* and wola it turned the eng over but every time it got to the same problem section it started making the I NEED A SHIM noise very loud then normal then noisy letting me know that my flexplate is big time out of round.
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I just put a jegs sfi flywheel on my 6.0 I turned the motor over by hand and found the flywheel hits the starter in one spot. I tried a few different ideas then bolted the stock flywheel and no issues. Jegs is sending another flywheel out asap.
Staging Lane
Joined: Aug 2010
Posts: 51
Likes: 1
Bringing this back from the dead as I stumbled across it.
I too am (recently) having a potential out of round/too large flex plate issue and wanted to see if anyone else has as well?
The starter is hitting the flex plate due to it's circumference (not depth). When I shim the starter down the starter gears engage.
Flex plate is a SFI plate. I wont mention the name until I confirm for sure that is the issue.
I too am (recently) having a potential out of round/too large flex plate issue and wanted to see if anyone else has as well?
The starter is hitting the flex plate due to it's circumference (not depth). When I shim the starter down the starter gears engage.
Flex plate is a SFI plate. I wont mention the name until I confirm for sure that is the issue.