1996 Optispark - Corvette Forum

Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory
Search

C4 Tech/Performance
L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1996 Optispark

Reply
 
 
 
Thread Tools Search this Thread
Old 12-08-2004, 01:29 PM   #1
urtoslo
CF Senior Member
 
urtoslo's Avatar
 
Member Since: Jun 2001
Posts: 719
Location: Loudoun County, VA
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1996 Optispark

I need to replace the optispark in my 94. It's been through 4 water pumps and an engine replacement. Will the opti from the 1996 year fit directly onto my engine, or will I have to replace other things to get the 96 opti to fit?

Any help/insite is appreciated!
urtoslo is offline   Reply With Quote
Old 12-08-2004, 02:09 PM   #2
SloRvette
CF Senior Member
Cruise-In VII Veteran
 
SloRvette's Avatar
 
Member Since: Aug 2001
Posts: 1,500
Location: Holliston MA
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to SloRvette
Default

Your going to need a different timing cover, different optispark connector, maybe a different cam if your's isn't drilled for the late optispark drive, long cam dowel pin, modify or replace the timing chain cam gear, and the later vacuum venting harness.
SloRvette is offline   Reply With Quote
Old 12-08-2004, 07:28 PM   #3
Tom Piper
CF Senior Member
 
Tom Piper's Avatar
 
Member Since: Feb 1999
Posts: 3,504
Location: Mexico Beach FL
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by urtoslo
I need to replace the optispark in my 94. It's been through 4 water pumps and an engine replacement. Will the opti from the 1996 year fit directly onto my engine, or will I have to replace other things to get the 96 opti to fit?

Any help/insite is appreciated!
I put a '95 Opti-Spark on my '92.

I suggest '95 Opti-Spark parts over the '96 because you can use your original crank hub.
The '96 has a crankshaft sensor for the OBD-II that needs additional parts to put on a '92 - '94.

Tom Piper
Tom Piper is offline   Reply With Quote
Old 12-08-2004, 07:43 PM   #4
FD2BLK
CF Senior Member
 
FD2BLK's Avatar
 
Member Since: Dec 2002
Posts: 3,552
Location: Charleston SC
Thanks: 0
Thanked 0 Times in 0 Posts
Default

A 95 timing cover and the vacume lines (Including check valve) are needed and thats about it. You will need to drop the oil pan a bit also.
FD2BLK is offline   Reply With Quote
Old 12-08-2004, 08:07 PM   #5
SloRvette
CF Senior Member
Cruise-In VII Veteran
 
SloRvette's Avatar
 
Member Since: Aug 2001
Posts: 1,500
Location: Holliston MA
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to SloRvette
Default

Quote:
Originally Posted by FD2BLK
A 95 timing cover and the vacume lines (Including check valve) are needed and thats about it. You will need to drop the oil pan a bit also.
You sure about that ?
SloRvette is offline   Reply With Quote
Old 12-08-2004, 08:25 PM   #6
Corvette Kid
Large Upstanding Member
St. Jude Donor '04-'05-'06-'07
Support Corvetteforum!
 
Corvette Kid's Avatar
 
Member Since: Jul 2003
Posts: 46,981
Location: Guns don't kill people - Planned Parenthood kills people
Thanked 47 Times in 22 Posts
Default

Quote:
Originally Posted by SloRvette
You sure about that ?
You'll need to extend your cam pin too.
Corvette Kid is offline   Reply With Quote
Old 12-08-2004, 09:52 PM   #7
urtoslo
CF Senior Member
 
urtoslo's Avatar
 
Member Since: Jun 2001
Posts: 719
Location: Loudoun County, VA
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Wow, it's not all that simple. Seems like the Delteq opti replacement may be the way to go...
urtoslo is offline   Reply With Quote
Old 12-08-2004, 10:48 PM   #8
BrianCunningham
CF Senior Member
 
BrianCunningham's Avatar
 
Member Since: Mar 2001
Posts: 26,689
Location: Boston, Dallas, Detroit, SoCal, back to Boston MA
Thanked 13 Times in 10 Posts
Default

You can vent the older ones, if that's what your after.
BrianCunningham is offline   Reply With Quote
Old 12-08-2004, 11:24 PM   #9
FD2BLK
CF Senior Member
 
FD2BLK's Avatar
 
Member Since: Dec 2002
Posts: 3,552
Location: Charleston SC
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by SloRvette
You sure about that ?
Nope forgot the new opti pig tail. As for the cam dowl, I did not need to do this on my 94 but I did install a hot cam at the same time so I am not sure on this one.
FD2BLK is offline   Reply With Quote
Old 12-08-2004, 11:36 PM   #10
ddr698
CF Senior Member
St. Jude Donor '09
Support Corvetteforum!
 
Member Since: May 2004
Posts: 1,280
Location: Gretna NE
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by urtoslo
Wow, it's not all that simple. Seems like the Delteq opti replacement may be the way to go...
Depends, if your opti is bad as of right now, you will still have to get a new opti in order to run the delteq. The delteq only replaces the high voltage side of the opti. The cam sync in the rear of the opti is still required for the delteq system.

So really if its water contamination you are worried about the Delteq system helps nothing. You still have to have the opti and water can still ruin the cam sync inside of it.
ddr698 is offline   Reply With Quote
Old 12-09-2004, 07:22 AM   #11
Tom Piper
CF Senior Member
 
Tom Piper's Avatar
 
Member Since: Feb 1999
Posts: 3,504
Location: Mexico Beach FL
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I'm not sure about the '94, but on my '92, the cam had to be changed because the hole in the front of the cam has to be large enough for the '95 Opti-Spark to fit into -- my '92 cam had a hole that was too small.

Tom Piper
Tom Piper is offline   Reply With Quote
Old 12-09-2004, 07:46 AM   #12
urtoslo
CF Senior Member
 
urtoslo's Avatar
 
Member Since: Jun 2001
Posts: 719
Location: Loudoun County, VA
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by ddr698
Depends, if your opti is bad as of right now, you will still have to get a new opti in order to run the delteq. The delteq only replaces the high voltage side of the opti. The cam sync in the rear of the opti is still required for the delteq system.

So really if its water contamination you are worried about the Delteq system helps nothing. You still have to have the opti and water can still ruin the cam sync inside of it.
The car runs, but something is not right. Dyno readouts indicate possible electrical breakdown in the upper rpm range. I'm replacing the knock sensor module with a 1996 version before I proceed further (with a possible opti replacement).
urtoslo is offline   Reply With Quote
Old 12-09-2004, 12:50 PM   #13
ddr698
CF Senior Member
St. Jude Donor '09
Support Corvetteforum!
 
Member Since: May 2004
Posts: 1,280
Location: Gretna NE
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by urtoslo
The car runs, but something is not right. Dyno readouts indicate possible electrical breakdown in the upper rpm range. I'm replacing the knock sensor module with a 1996 version before I proceed further (with a possible opti replacement).
I actually had the same thing happen to me, in upper rpms it would have a miss, sometimes little, sometimes terrible. I put it on the dyno and found out the same thing. Turned out that it was my opti. Another thing to try would be your ICM.
ddr698 is offline   Reply With Quote
Old 12-09-2004, 02:15 PM   #14
Vis Croceus
CF Senior Member
 
Vis Croceus's Avatar
 
Member Since: Apr 2003
Posts: 3,697
Location: NoVA
Thanks: 0
Thanked 0 Times in 0 Posts
Default

http://para.noid.org/~muttvette/opti.html

A simpler option is the dynaspark

http://www.dynotech-eng.com/dynaspark.htm
Vis Croceus is offline   Reply With Quote
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Reload this Page 1996 Optispark
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Oil Leak LT1 Timing Cover After Replacing Water Pump and Opti-Spark 94 LT1 wheeljo2 C4 Tech/Performance 19 04-10-2013 10:30 PM
Opti-Spark Distributor 95 Vette jcreech C4 Tech/Performance 6 07-18-2011 05:46 PM
so i just replaced my opti-spark daniel5625 C4 Tech/Performance 14 10-10-2010 12:05 AM
Opti-spark prices...where and who 69mako C4 Tech/Performance 13 06-13-2005 10:48 PM
opti-spark replacement step by step boonie2 C4 Tech/Performance 8 10-24-2003 11:16 PM


Tags
1996, optispark

Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump



All times are GMT -4. The time now is 09:48 AM.