The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-05-2011, 05:22 PM   #1
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
what the hell happened to my starter?

okay so i fired it up, did the timing, let in run for a few minutes, shut if off, go to start it back up all i hear is this grinding noise, so when i look at the starter, the teeth that engage into the flex pate are stuck in the flex plate.

the starter has not been moved since the engine has been dropped in, the bolts were tight as well?

everytime i do the paperclip trick and get it at a good spot, i tap the start button, and it gets stuck in to flex plate... everytime.

what happened?
dbmx66 is offline   Reply With Quote
Old 03-05-2011, 05:29 PM   #2
lilpoindexter
Registered User
 
lilpoindexter's Avatar
 
Join Date: Sep 2010
Location: los angeles
Posts: 1,134
Re: what the hell happened to my starter?

Are you using starter shims?
lilpoindexter is offline   Reply With Quote
Old 03-05-2011, 05:32 PM   #3
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
Re: what the hell happened to my starter?

Quote:
Originally Posted by lilpoindexter View Post
Are you using starter shims?
no. for the past 2 months its started perfectly everyday. now all of a sudden it wont engage right
dbmx66 is offline   Reply With Quote
Old 03-05-2011, 10:11 PM   #4
Big Port Jimmy 6
Addicted to Rust
 
Big Port Jimmy 6's Avatar
 
Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
Re: what the hell happened to my starter?

Make sure the flex plate/flywheel isn't loose or cracked.
__________________
Current trucks:
(48 GMC100 320 inliner) Gone
(48 Suburban in pieces) Sold
87 GMC CCSB 5.3 4l60E Daily Driver

ECTA National record holder XO/PP

We never really grow up, we just learn how to act in public.
Big Port Jimmy 6 is offline   Reply With Quote
Old 03-05-2011, 10:39 PM   #5
cableguy0
Senior Member
 
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
Re: what the hell happened to my starter?

Do you have a starter brace? Are you sure the nosecone on the starter isnt cracked? Also check and make sure the block itself isnt cracked around the starter mounting hole.
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.
cableguy0 is offline   Reply With Quote
Old 03-05-2011, 11:10 PM   #6
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
Re: what the hell happened to my starter?

flexplate is brand new, and its not a stock style starter, its a race starter, no cracks in block either.
dbmx66 is offline   Reply With Quote
Old 03-05-2011, 11:33 PM   #7
Dave
DND Trucks
 
Join Date: Dec 1999
Location: NW Indiana
Posts: 2,397
Re: what the hell happened to my starter?

There's nothing like being in front of the problem first hand, but here it goes.

How many teeth is there on the flex plate, i.e. 168? How about the starter bendix gear? What's the height of the race starter in comparison to stock? If there's say around 10 thousands or more difference in height at the mounting surfaces, I've seen it cause a problem.

At this point with what you've described thus far, it sounds like an engagement / alignment issue.
Dave is offline   Reply With Quote
Old 03-05-2011, 11:40 PM   #8
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
Re: what the hell happened to my starter?

Quote:
Originally Posted by Dave View Post
There's nothing like being in front of the problem first hand, but here it goes.

How many teeth is there on the flex plate, i.e. 168? How about the starter bendix gear? What's the height of the race starter in comparison to stock? If there's say around 10 thousands or more difference in height at the mounting surfaces, I've seen it cause a problem.

At this point with what you've described thus far, it sounds like an engagement / alignment issue.
flexplate is 168 i think, not positive. idk about the starter, didnt check the height difference.

only thing i wanna know is how come i could start it fine since the first time woke broke the engine in, and now all of a sudden it doesnt work.
dbmx66 is offline   Reply With Quote
Old 03-06-2011, 12:20 AM   #9
Dave
DND Trucks
 
Join Date: Dec 1999
Location: NW Indiana
Posts: 2,397
Re: what the hell happened to my starter?

I wish I could give you a definitive answer to your problem, but I think it lies with the bendix gear properly meshing with the flywheel. Does the bendix gear look as if it has been damaged in any way, (missing teeth)?

Have a friend bump the starter (after you've taken all safety precautions) with you underneath watching the engagment of the starter to flywheel.

Hope this helps.
Dave is offline   Reply With Quote
Old 03-06-2011, 12:44 AM   #10
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
Re: what the hell happened to my starter?

Quote:
Originally Posted by Dave View Post
I wish I could give you a definitive answer to your problem, but I think it lies with the bendix gear properly meshing with the flywheel. Does the bendix gear look as if it has been damaged in any way, (missing teeth)?

Have a friend bump the starter (after you've taken all safety precautions) with you underneath watching the engagment of the starter to flywheel.

Hope this helps.
teeth on flexplate and starter are both fine. i have my brother lay underneath and watch as i tapped the button. it makes a jammed/grinding noise and the starter gear is wedged in the flexplate. makes no sense
dbmx66 is offline   Reply With Quote
Old 03-07-2011, 10:13 AM   #11
willett
Another Day, Another Dollar
 
willett's Avatar
 
Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
Re: what the hell happened to my starter?

check runout on the bendix gear. perhaps you somehow bent the input shaft??
__________________
-78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box

"its hip to be square"
willett is offline   Reply With Quote
Old 03-07-2011, 11:43 AM   #12
motornut
78K & 79C Jimmys
 
motornut's Avatar
 
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
Re: what the hell happened to my starter?

have you tried the starter when loose
does it engage and disengage when loose(try many times)
seen starter gear get a little rusty and not work right in/out
if the flywheel wasn't new i'd say check it too for wear/damage
__________________
John
1978 GMCJimmy4X4-350/203
1979 GMCJimmy4X2-305/350
motornut is offline   Reply With Quote
Old 03-07-2011, 04:15 PM   #13
dbmx66
Registered User
 
Join Date: Aug 2009
Location: PA
Posts: 883
Re: what the hell happened to my starter?

Quote:
Originally Posted by motornut View Post
have you tried the starter when loose
does it engage and disengage when loose(try many times)
seen starter gear get a little rusty and not work right in/out
if the flywheel wasn't new i'd say check it too for wear/damage
there isnt any rust any where on either of them. it makes no sense
dbmx66 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:26 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com