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

Timing?????

Thread Tools
 
Search this Thread
 
Old Jun 9, 2017 | 05:04 PM
  #1  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default Timing?????

Hello how is everybody doing out there everybody's been a help in the past so I don't see how the situation could be any different okay long story short had to replace the distributor put the brand new one in there the engine was undisturbed try to fire it up she stammers but will not catch everything tells me that this is timing but before I go stupid I was just like a little confirmation from those out there or a possible new route that I haven't thought of thank you in advance you guys are all a big help and I don't care what my lady says the Corvettes are not a money pit
Reply
Old Jun 9, 2017 | 05:52 PM
  #2  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 763
Default

I do the physical alignment method when installing the distributor. set the engine at #1 TDC, compression, and position the slot of the oil pump shaft at approximately the 5:30 position. set the distributor squarely on the engine - use the four distributor cap mounting points - parallel and perpendicular to the engines CL. position the rotor pointing to the center of the LH valve cover emblem, and lower the distributor to engage the drive gear. a little wiggle-giggle may be necessary, but everything should fall into place. when fully seated, the rotor should be pointing to the #1 spark plug. turn the distributor about 2-3° CCW, and secure. cap and plug wires, and you should be good to go. your initial static timing should be around 4-6° BTDC. fine tune as required.
Reply
Old Jun 9, 2017 | 07:34 PM
  #3  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

There we go thank you so much I tried to half-*** it to be honest you know see what I did is I just took a picture with my phone of the old one before I took it out and I match marked it on the EGR valve and right there on the hood weathering and I just you know tried to matches perfect as I could I was hoping more than knowing that it would work but when she stambul I felt good and I knew I was close so thank you for the advice that is what I'm going to do
Reply
Old Jun 9, 2017 | 07:40 PM
  #4  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

One last thing real quick what size socket to move the cam thank you
Reply
Old Jun 9, 2017 | 09:42 PM
  #5  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 763
Default

Originally Posted by 86 pacer eric
One last thing real quick what size socket to move the cam thank you
I don't understand - cam? are you referring to the center bolt on the crank pulley/harmonic balancer? if so, it's 5/8" - HOWEVER I don't recommend using it to turn the engine with all (8) spark plugs in place. the torque on that bolt is 60 ft.lb. and you could easily exceed that going against engine compression. the last thing you want to do is over torque and possibly shear the head off that bolt. if you remove the plugs, you can easily turn the engine using that bolt without excessive torque. I use a 5/8" 6-point, with a 1/2" drive, long handle ratchet -
Reply
Old Jun 9, 2017 | 09:54 PM
  #6  
A Peter C4's Avatar
A Peter C4
Burning Brakes
 
Joined: Jun 2016
Posts: 761
Likes: 66
From: Fitzwilliam New Hampshire
Default

What Joe C said .Do not break crank bolt.
Reply
Old Jun 9, 2017 | 10:08 PM
  #7  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

Okay thanks I was going to put new filters in an oil change and I was thinking about doing the plugs anyway since she's been sitting for awhile so cool thanks for the advice
Reply
Old Jun 9, 2017 | 10:12 PM
  #8  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

Since we're talking spark plugs are replacing the wires a pain in the *** or not cuz I mean might as well new distributor and all
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Jun 11, 2017 | 05:52 AM
  #9  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 763
Default

factory routing is not difficult, but a (just a little) PITA. you have to take your time, and pay attention to detail, and foremost, be very ****. there are a series of plastic wire holders, that route the wires along the bottom flange of the valve covers, up and behind, and ultimately to the cap. contrary to the FSM's, three wires route BEHIND the distributor , #1, #2, and #3. that has been an error in the FSM's since day one, and for some reason, never corrected.

I personally use Tylor spiro-pro, 8mm silicone, custom fit for the L98 corvette. I've installed several sets, and IMO, quality product, and they fit very well. about $55 on-line.

are your wires in place now, and does it appear to be original wires and routing? if so, half the battle is done. the wires are a specific length, and are meant to route to the factory configuration. do a search within this forum on spark plug wire routing and installation - as I recall, lately, there have been several thread on the subject.

here's a start -

https://www.corvetteforum.com/forums...lug-wires.html

https://www.corvetteforum.com/forums...e-routing.html

https://www.corvetteforum.com/forums...e-lengths.html

Reply
Old Jun 11, 2017 | 12:47 PM
  #10  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

Originally Posted by Joe C
factory routing is not difficult, but a (just a little) PITA. you have to take your time, and pay attention to detail, and foremost, be very ****. there are a series of plastic wire holders, that route the wires along the bottom flange of the valve covers, up and behind, and ultimately to the cap. contrary to the FSM's, three wires route BEHIND the distributor , #1, #2, and #3. that has been an error in the FSM's since day one, and for some reason, never corrected.

I personally use Tylor spiro-pro, 8mm silicone, custom fit for the L98 corvette. I've installed several sets, and IMO, quality product, and they fit very well. about $55 on-line.

are your wires in place now, and does it appear to be original wires and routing? if so, half the battle is done. the wires are a specific length, and are meant to route to the factory configuration. do a search within this forum on spark plug wire routing and installation - as I recall, lately, there have been several thread on the subject.

here's a start -

https://www.corvetteforum.com/forums...lug-wires.html

https://www.corvetteforum.com/forums...e-routing.html

https://www.corvetteforum.com/forums...e-lengths.html

well thank you so much I did do a little research on my own and I don't know if there's any truth to it or not but from what I understand the spark plug some cells is going to be about for our job to get them out and it's best to come from the bottom and from what this guy was saying this forum is that number eight is near impossible to do so I'm thinking before I even go about doing this project I better look thoroughly into this but thank you for the help
Reply
Old Jun 11, 2017 | 12:49 PM
  #11  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

Originally Posted by 86 pacer eric
well thank you so much I did do a little research on my own and I don't know if there's any truth to it or not but from what I understand the spark plug some cells is going to be about for our job to get them out and it's best to come from the bottom and from what this guy was saying this forum is that number eight is near impossible to do so I'm thinking before I even go about doing this project I better look thoroughly into this but thank you for the help
sorry for the context I know it doesn't make sense autocorrect what I was trying to say the spark plugs are supposed to be A4 to 5 hour job if I understand it correctly and that the best route is to come from underneath and that number 8 is near impossible to do is why I was trying to say but autocorrect
Reply
Old Jun 11, 2017 | 01:06 PM
  #12  
86 pacer eric's Avatar
86 pacer eric
Thread Starter
Instructor
 
Joined: Feb 2016
Posts: 117
Likes: 0
Default

Originally Posted by 86 pacer eric
sorry for the context I know it doesn't make sense autocorrect what I was trying to say the spark plugs are supposed to be A4 to 5 hour job if I understand it correctly and that the best route is to come from underneath and that number 8 is near impossible to do is why I was trying to say but autocorrect
and I know and understand this was supposed to be a timing thread and we got way off onto the spark plug thing but thank you for your advice
Reply

Get notified of new replies

To Timing?????





All times are GMT -4. The time now is 03:36 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE