Starter Interference

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

K

Kwg10305

Junior Member
Joined
Jul 19, 2024
Posts
6
Reaction score
2
Location
Federal Way Wa
First Name
Kevin
Truck Year
1984
Truck Model
K10
Engine Size
5.7L
You must be registered for see images attach

My starter jumps teeth and this is what it looks like after we try to start it.
 
K

Kwg10305

Junior Member
Joined
Jul 19, 2024
Posts
6
Reaction score
2
Location
Federal Way Wa
First Name
Kevin
Truck Year
1984
Truck Model
K10
Engine Size
5.7L
So I have a 168 tooth flexplate and I can get the truck to Crank for a few times like it should but then it's starts skipping teeth on the flexplate. Any help would be great. See photos
 

Attachments

  • 20240806_141423.jpg
    20240806_141423.jpg
    59.4 KB · Views: 28
  • 20240806_141439.jpg
    20240806_141439.jpg
    66.7 KB · Views: 28
  • 20240806_141442.jpg
    20240806_141442.jpg
    81.2 KB · Views: 25
squaredeal91

squaredeal91

Full Access Member
Joined
Mar 10, 2023
Posts
2,487
Reaction score
4,472
Location
Cave junction Oregon
First Name
Greg bush
Truck Year
1991 SB
Truck Model
K30
Engine Size
5.9 Cummins 12 valve
Kwg10305 said:
So I have a 168 tooth flexplate and I can get the truck to Crank for a few times like it should but then it's starts skipping teeth on the flexplate. Any help would be great. See photos
Click to expand...
Now that you confirmed you have a 168 tooth flex plate and a 350 Let's back up to the history on the starter. How did we get to this? Replacing starter? Did you get the vehicle without a starter? Did the old one work good till it didn't and the new one is crap?
 
K

Kwg10305

Junior Member
Joined
Jul 19, 2024
Posts
6
Reaction score
2
Location
Federal Way Wa
First Name
Kevin
Truck Year
1984
Truck Model
K10
Engine Size
5.7L
We brought a new crate 350 from GM and are doing a full rebuild with all new parts. We have been working on this for a few years now and the old starter was no good
 
ali_c20

ali_c20

Full Access Member
Joined
Sep 20, 2016
Posts
1,265
Reaction score
1,803
Location
Austria
First Name
Alexander
Truck Year
1974, 1979
Truck Model
C20, K5
Engine Size
350, 350
Try to find an original starter for a 168 flexplate and mount it. If the original starter fits the after market starter is the issue. Shiming the starter at the outer bolt will move the gear closer to the flex plate but that is normally only used for fine adjustment of the gear gap.
Is the block of the crate engine new or remanufactured?
 
85K304SPD

85K304SPD

Full Access Member
Joined
Mar 29, 2022
Posts
471
Reaction score
700
Location
Las Cruces, NM
First Name
Richard
Truck Year
1985
Truck Model
K30
Engine Size
402
Maybe you have the wrong starter bolts. There is two different sizes. Some blocks take metric bolts and some take standard bolts. They have to be the knurled ones that are the right ones for that block. Most likely the newer blocks take the metric ones.
 
Long Rider

Long Rider

Full Access Member
Joined
May 5, 2023
Posts
76
Reaction score
150
Location
La Grande Oregon
First Name
Jim
Truck Year
1979
Truck Model
C10
Engine Size
350
If you still have the old starter, I have had good luck using the front of the old starter on the new one. They always line up. (so far)
 
M

mw78c20

Junior Member
Joined
Dec 26, 2022
Posts
2
Reaction score
0
Location
western canada
First Name
mike
Truck Year
1978
Truck Model
c20
Engine Size
5.7L 350 V8
ya the parts are incredibly near universal other than a few specific ones. i managed to swap the nosecone from the parallel bolt one to staggered and have no issues
 
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,333
Reaction score
8,481
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
mw78c20 said:
ya the parts are incredibly near universal other than a few specific ones. i managed to swap the nosecone from the parallel bolt one to staggered and have no issues
Click to expand...
That was with O E starters we swapped nose cones all the time,used to be able to buy just the nose cone,I'd tell you why but it would just start arguments. Anyway looks like he has an aftermarket replacement starter,I doubt an O.E. nose cone would fit. First thing I'd do is go back to O.E. starter and correct bolts.
 
You must log in or register to reply here.

Similar threads

JKRamsey1991
Gear Reduction Starter Praise
Replies
10
Views
833
squaredeal91
squaredeal91
TX87R10
Yet Another Starter Diagnostic Thread
2 3
Replies
34
Views
3K
TX87R10
TX87R10
E
C20 Camper Special 454 Engine Starter Wiring
Replies
5
Views
517
desertdog1
D
AZ Highlander
Problematic Starting - rotate crank before starter engages?
Replies
11
Views
944
Broken85
B
Girth
Starter dropping out early?
2 3
Replies
33
Views
2K
SquareRoot
SquareRoot

Latest posts

Forum statistics

Threads
43,982
Posts
947,092
Members
36,039
Latest member
1986 Hooligan
Top