flywheel ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

squint · 07-24-2005, 01:46 PM

Well you may have heard about my starter ordeal..

I am wondering if its possible that the guys who installed my engine put in a different flywheel?.. Possibly bigger than usual?..

My starter wont do anything.. It enguages.. but wont turn over the truck.. and the gear gets stuck against the flywheel..

BALDMIKE · 07-24-2005, 04:18 PM

Well I guess you could remove the dust cover and lay under the truck and count the teeth on the flywheel ?

squint · 07-24-2005, 05:07 PM

i thought of that.. but you cant see the teeth at the top..

. I would have to cound.. rotate.. count.. rotate.. count...lol

if it comes down to it.. I will

WakBordr7387 · 07-25-2005, 01:40 AM

You could snake a tape measure up there, I cant remember exactly the dimensions but a 153 tooth is about 12" and the 168 is 14".
Could also be that you need starter shims, or using the wrong starter. The difference in starters is for the different flywheels. The staggared bolt pattern is for the 168 and the straight across is for 153.
I hope this helps.

squint · 07-25-2005, 02:03 AM

i have it shimmed to the hilt.. I have 8 shimms under it..!

i have the staggered one.. so i guess that means i have the one for the 168..

I managed to get it to start.. I (think) it was the batter terminals.. I got some battery spray.. and a wire brush and pollished everything to a nice perfect shine and put it all back on nice and tight.. seems to start now..

I will keep my fingeres crossed..

piecesparts · 07-25-2005, 01:31 PM

If oyu have the staggered on then it is for the big plate, if they put in the wrong flywheel or flexplate, then it would be really smaller than the starter mount. Are you sure the starter is good? Has someone machined it to fit someother mess. The shop manual (Chevy) has a process for machining the starter mounting pads for fitment, I personally would try another starter before I went anywhere else.

WakBordr7387 · 07-26-2005, 01:31 AM

I have another suggestion, I dont really have anything to explain why it worked better for me, but it did anyway.
I constantly had grinding problems like yours. My starters would turn over fine a couple times, the start grinding real bad and no amount of shimming or adjustment could do a thing about it. I tried gear reduction mini starters, They worked a ton better. They would go alot longer before they started grinding.
I later found out I was using a th350 torque converter on a th350c and it was pushing and bending my flywheel out a shape and it was what was causing my problem.
I just thought Id share that since the mini starters worked alot better than the stock style did for me.

piecesparts · 07-26-2005, 10:20 PM

If you go to the trouble of replacing the troque convertor then go to a heavy duty SFI approved flexplate. I have one on my 91 Chevy and it flexes enough that the ballooning of the torque converter allows it to touch the starter drive on my mini starter, causing a scraping noise when under acceleration. Presently I am running a rebuilt stock starter and the noise is gone, but I will upgrade again later.

07-24-2005, 01:46 PM	#1
squint Registered User Join Date: Jul 2005 Location: Vancouver Posts: 195	flywheel ? Well you may have heard about my starter ordeal.. I am wondering if its possible that the guys who installed my engine put in a different flywheel?.. Possibly bigger than usual?.. My starter wont do anything.. It enguages.. but wont turn over the truck.. and the gear gets stuck against the flywheel..

07-24-2005, 04:18 PM	#2
BALDMIKE Enormous Member Join Date: May 2005 Location: CLOUD "9" Posts: 108	Well I guess you could remove the dust cover and lay under the truck and count the teeth on the flywheel ? __________________ "79" Chevy Stepside 350/350 Check my Blog @ www.BaldMikesWorld.blogspot.com

07-25-2005, 01:40 AM	#4
WakBordr7387 Registered User Join Date: Jun 2005 Location: Corpus Christi, TX Posts: 45	You could snake a tape measure up there, I cant remember exactly the dimensions but a 153 tooth is about 12" and the 168 is 14". Could also be that you need starter shims, or using the wrong starter. The difference in starters is for the different flywheels. The staggared bolt pattern is for the 168 and the straight across is for 153. I hope this helps. __________________ 86' C-10 Silverado 85' C4 Corvette When in doubt, BURN OUT!!

07-26-2005, 01:31 AM	#7
WakBordr7387 Registered User Join Date: Jun 2005 Location: Corpus Christi, TX Posts: 45	I have another suggestion, I dont really have anything to explain why it worked better for me, but it did anyway. I constantly had grinding problems like yours. My starters would turn over fine a couple times, the start grinding real bad and no amount of shimming or adjustment could do a thing about it. I tried gear reduction mini starters, They worked a ton better. They would go alot longer before they started grinding. I later found out I was using a th350 torque converter on a th350c and it was pushing and bending my flywheel out a shape and it was what was causing my problem. I just thought Id share that since the mini starters worked alot better than the stock style did for me. __________________ 86' C-10 Silverado 85' C4 Corvette When in doubt, BURN OUT!!

07-24-2005, 05:07 PM	#3
squint Registered User Join Date: Jul 2005 Location: Vancouver Posts: 195	i thought of that.. but you cant see the teeth at the top.. . I would have to cound.. rotate.. count.. rotate.. count...lol if it comes down to it.. I will

07-25-2005, 02:03 AM	#5
squint Registered User Join Date: Jul 2005 Location: Vancouver Posts: 195	i have it shimmed to the hilt.. I have 8 shimms under it..! i have the staggered one.. so i guess that means i have the one for the 168.. I managed to get it to start.. I (think) it was the batter terminals.. I got some battery spray.. and a wire brush and pollished everything to a nice perfect shine and put it all back on nice and tight.. seems to start now.. I will keep my fingeres crossed..

07-25-2005, 01:31 PM	#6
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	If oyu have the staggered on then it is for the big plate, if they put in the wrong flywheel or flexplate, then it would be really smaller than the starter mount. Are you sure the starter is good? Has someone machined it to fit someother mess. The shop manual (Chevy) has a process for machining the starter mounting pads for fitment, I personally would try another starter before I went anywhere else.

07-26-2005, 10:20 PM	#8
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	If you go to the trouble of replacing the troque convertor then go to a heavy duty SFI approved flexplate. I have one on my 91 Chevy and it flexes enough that the ballooning of the torque converter allows it to touch the starter drive on my mini starter, causing a scraping noise when under acceleration. Presently I am running a rebuilt stock starter and the noise is gone, but I will upgrade again later.



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