LT1/LT4 Tech 1993-1997

distributor cap issues need help bad

Thread Tools
 
Search this Thread
 
  #1  
Old 02-25-2011, 09:32 PM
red star's Avatar
1st Gear Member
Thread Starter
Join Date: Apr 2007
Location: Fort Pol, LA
Posts: 285
Default distributor cap issues need help bad

I have to replace the distributor cap and rotor. i have done this before. i got everything pretty much done and found that the harmonic balancer rubs the cap but just enough that you can hear it. is this a bad thing?

also, the main issue...i have spend the last 3 days working on geting this done. i got it all back together and it didnt start. the only thing i can think of that i may have done wrong was when i put the distributor back on the block i didnt line it up right. it wants to start but wont. i though it only went on one way...im wrong tho right?
 
  #2  
Old 02-25-2011, 09:50 PM
BasicConcepts's Avatar
Overdrive Member
Technical User
Join Date: Oct 2009
Location: Greenville, South Carolina
Posts: 4,597
Default

if the balancer is just barley touching than eventually it will wear out the cap enough to stop making noise and hopefully not cut thru the cap

as for the opti being in the right way i know nothing about them except there a pain and expensive
 
  #3  
Old 02-26-2011, 09:04 AM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Default

What year is your car? The opti hub to cam mount designs are different between the old and new style opti, but they still go on only one way (as long as you don't try to force it on). You should have a sufficient gap between the cap and lower pulley. If the cap is fit on correctly, then the opti isn't seated into the cam all the way, which would explain why the engine isn't running. Did you get the opti to slide in place nicely by hand with no gaps between the mounting ears and the block first, or did you "make it go in or else" by cranking down on the bolts (the bad way)?
 

Last edited by Camaro 69; 02-26-2011 at 09:12 AM.
  #4  
Old 02-26-2011, 09:22 AM
torque_is_good's Avatar
4th Gear Member
Join Date: Nov 2008
Location: under the hood
Posts: 2,614
Default

Originally Posted by Camaro 69
What year is your car? The opti hub to cam mount designs are different between the old and new style opti, but they still go on only one way (as long as you don't try to force it on). You should have a sufficient gap between the cap and lower pulley. If the cap is fit on correctly, then the opti isn't seated into the cam all the way, which would explain why the engine isn't running. Did you get the opti to slide in place nicely by hand with no gaps between the mounting ears and the block first, or did you "make it go in or else" by cranking down on the bolts (the bad way)?

me thinks camaro69 nailed this one

balancer should not rub opti

sounds like you don't have it on correctly
 
  #5  
Old 02-26-2011, 09:49 AM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Default

The pics below will help make sense of it. The first is the old design opti (unvented). The splined shaft has a flat spot on it, and can only go into the cam one way. The second is the new design (vented). See that little notch in the 2 o'clock-ish position of the hub? That's an important indexing point to pay attention to when slipping the opti on. Take a look at your cam if you have this design opti, you'll see.

Name:  OptisparkOldDesign.jpg
Views: 81
Size:  36.1 KB
Name:  OptisparkNewDesign.jpg
Views: 55
Size:  39.2 KB
 

Last edited by Camaro 69; 02-26-2011 at 09:51 AM.
  #6  
Old 02-26-2011, 11:14 AM
craby's Avatar
April 2011 ROTM
ROTM Winner's Club
Join Date: Mar 2009
Location: Tokeland, Washington
Posts: 21,750
Default

yep gona have to take it apart again. either cap or opti is installed wrong. if your on your second cap and rotor for this opti i would replace the complete unit. the optical reader and the circuits go bad in the distributor.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Sydthebarrett
70-81 General
13
07-25-2012 01:57 AM
t-fly
General Tech
0
06-26-2009 07:52 PM
sewerrat
82-92 V8 Tech
3
06-26-2009 12:59 AM
KTM90
70-81 General
4
01-27-2007 08:34 AM
btrux06
93-02 V6 Tech
1
12-03-2004 08:27 AM



Quick Reply: distributor cap issues need help bad



All times are GMT -5. The time now is 06:09 PM.