Periodic starter grind - Team Camaro Tech
Engine General Engine Discussion.

 2Likes
  • 1 Post By 4Speed67CamaroRS
  • 1 Post By ZEN357
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old Dec 28th, 18, 07:29 AM Thread Starter
Gold Lifetime Member
Jim
 
Join Date: Apr 2015
Location: Torrance
Posts: 396
Garage
Periodic starter grind

Hi,
Does/did anyone have an issue like this? I purchased this starter https://www.summitracing.com/parts/PWM-9100 for my bbc and it has no issue turning over the motor but half the time, it doesn't engage properly and grinds against the flywheel. I've used no shims up to four shims in an effort to correct this issue with no luck. I had purchased the starter over a year prior to getting the car running and thought maybe it was the starter but the warranty was only for a year so I purchased another but no difference. This starter says good for 168 or 153 tooth flywheels. I don't quite understand that but apparently it has to do with different diameter flywheels. I now have this starter coming https://www.summitracing.com/parts/pwm-9526 which only states 168 tooth flywheels in hopes that it will consistently engage properly cure my issue. Aside from the damage it's doing frankly it's embarrassing!
Thanks, Jim

No School Like The Old School!
67 RS 4 Speed with Big Block conversion
12 bolt with Richmond 3.90's
4Speed67CamaroRS is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old Dec 28th, 18, 07:53 AM
Tech Team
Rick
 
Join Date: Feb 2018
Location: Palm Desert CA
Posts: 70
Re: Periodic starter grind

The last time that happened to me it turned out that one of the starter bolts loosened up a bit. I figured that the torque of the starter would throw off the alignment and some times it would catch properly and some times it wouldn't. Also check the new bolts that came with the starter. Cheep bolts may not be sized correctly. The knurl is supposed to keep the bolt shaft snug in the starter bolt holes so the torque of the starter does not have that little movement that throws off the alignment.

Rick
Sam 15 is offline  
post #3 of 7 (permalink) Old Dec 28th, 18, 12:17 PM
Senior Tech
Al
 
Join Date: Jun 2007
Location: Iowa
Posts: 3,035
Re: Periodic starter grind

Jim, This thread discusses how to check starter clearance and shimming. Alignment,
rigidity/support are very important. You can't just replace the starter without checking
the alignment, etc. I doubt there's anything wrong with the first starter you used.
https://www.camaros.net/forums/19-el...-question.html
Here's an article you may also find helpful .
https://www.chevyhardcore.com/news/c...all-situation/

Al

my 67' build thread:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
allanjs is offline  
 
post #4 of 7 (permalink) Old Dec 28th, 18, 12:48 PM Thread Starter
Gold Lifetime Member
Jim
 
Join Date: Apr 2015
Location: Torrance
Posts: 396
Garage
Re: Periodic starter grind

Quote:
Originally Posted by allanjs View Post
Jim, This thread discusses how to check starter clearance and shimming. Alignment,
rigidity/support are very important. You can't just replace the starter without checking
the alignment, etc. I doubt there's anything wrong with the first starter you used.
https://www.camaros.net/forums/19-el...-question.html
Here's an article you may also find helpful .
https://www.chevyhardcore.com/news/c...all-situation/


Thanks a bunch. I guess I should look at the starter bolts a bit closer. Can you tell me the correct (hopefully easy) way to manually engage the starter?
I'll look into what I have before opening the box of the starter on order.
Thanks, Jim

No School Like The Old School!
67 RS 4 Speed with Big Block conversion
12 bolt with Richmond 3.90's
4Speed67CamaroRS is offline  
post #5 of 7 (permalink) Old Dec 28th, 18, 03:33 PM
Senior Tech
Al
 
Join Date: Jun 2007
Location: Iowa
Posts: 3,035
Re: Periodic starter grind

Quote:
Originally Posted by 4Speed67CamaroRS View Post
Thanks a bunch. I guess I should look at the starter bolts a bit closer. Can you tell me the correct (hopefully easy) way to manually engage the starter?
I'll look into what I have before opening the box of the starter on order.
Thanks, Jim
Jim, This will help.
Chevy Starter Tuning - Super Chevy Magazine

Al

my 67' build thread:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
allanjs is offline  
post #6 of 7 (permalink) Old Jan 2nd, 19, 09:10 PM Thread Starter
Gold Lifetime Member
Jim
 
Join Date: Apr 2015
Location: Torrance
Posts: 396
Garage
Re: Periodic starter grind

Quote:
Originally Posted by 4Speed67CamaroRS View Post
Thanks a bunch. I guess I should look at the starter bolts a bit closer. Can you tell me the correct (hopefully easy) way to manually engage the starter?
I'll look into what I have before opening the box of the starter on order.
Thanks, Jim
So after finally having a day off to look at the starter issue the result was, no matter how I lined up or shimmed the starter that I have on the car https://www.summitracing.com/parts/PWM-9100, the same thing kept happening. I took the starter off and compared it to the new one (more expensive one) https://www.summitracing.com/parts/pwm-9526 that I had just bought, and I could see the quality difference. The first thing was the pinion gear was actually bigger than the cheaper starter. I had read that the pinions gears are the same for 153 tooth and 168 tooth. It's the flywheel size that makes them both work. Whether that is the case or not, the more expensive one definitely has a bigger pinion gear and only lists it fitting the 168 tooth flywheel.
Ultimately I installed the new starter with no shims and it starts beautifully. Hopefully that continues the be the case. So far so good. If it turns out this didn't solve the issue, I'll let you know.
Thanks, Jim
allanjs likes this.

No School Like The Old School!
67 RS 4 Speed with Big Block conversion
12 bolt with Richmond 3.90's
4Speed67CamaroRS is offline  
post #7 of 7 (permalink) Old Jan 3rd, 19, 04:32 AM
Senior Tech
Ed
 
Join Date: Feb 2018
Location: Wheeling, WV
Posts: 339
Re: Periodic starter grind

I had the same issue with my 66 Big Block Vette. I think I bought three starters before I found the correct one and got it shimmed properly before I had no grinding noise.
4Speed67CamaroRS likes this.
ZEN357 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome