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

what's holding me back?

Thread Tools
 
Search this Thread
 
Old May 21, 2014 | 03:09 PM
  #81  
Tapio@FTTRacing's Avatar
Tapio@FTTRacing
Advanced
 
Joined: Jul 2013
Posts: 92
Likes: 2
Default

Originally Posted by DanielRicany
That's what I do for a living, fix cars.
Then you should know that your cylinder 1 tdc is when you have both of your marks 12 o'clock. With crank mark on 12 o'clock and cam mark 6 o'clock you should be firing to cylinder 6, and you are.

Put it back together, hit the dyno and let us know.
Reply
Old May 21, 2014 | 03:19 PM
  #82  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Originally Posted by Tapio@FTTRacing
Then you should know that your cylinder 1 tdc is when you have both of your marks 12 o'clock. With crank mark on 12 o'clock and cam mark 6 o'clock you should be firing to cylinder 6, and you are.

Put it back together, hit the dyno and let us know.
I think you're mistaken. I've had 3 people from 3 different shops come over and take a look, they all agreed that it was 180 out. Plus, I took my old cam and my old timing gear, put the gear on the dowel pin on the cam and had the timing mark at 6 oclock. In the position, cylinder 1 intake valve just finished closing, meaning that it was time to fire the cylinder, I rotated it clock wise, the next valve up was the exhaust valve, then immediately after, the intake.
Reply
Old May 21, 2014 | 03:25 PM
  #83  
tunedport85inject's Avatar
tunedport85inject
Drifting
10 Year Member
 
Joined: Aug 2010
Posts: 1,704
Likes: 8
Default

Sorry buddy if i insists,i see your base out about 90 degree,but someone correct me if i'm wrong
look at position of cable on the base
[IMG][/IMG]
look at your cable position it's lined with the distributor clamp
[IMG][/IMG]
Reply
Old May 21, 2014 | 03:27 PM
  #84  
ch@0s's Avatar
ch@0s
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Default

Originally Posted by DanielRicany
I think you're mistaken. I've had 3 people from 3 different shops come over and take a look, they all agreed that it was 180 out. Plus, I took my old cam and my old timing gear, put the gear on the dowel pin on the cam and had the timing mark at 6 oclock. In the position, cylinder 1 intake valve just finished closing, meaning that it was time to fire the cylinder, I rotated it clock wise, the next valve up was the exhaust valve, then immediately after, the intake.
If it was 180 out it would not run.
Reply
Old May 21, 2014 | 03:28 PM
  #85  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Originally Posted by tunedport85inject
Sorry buddy if i insists,i see your base out about 90 degree,but someone correct me if i'm wrong
look at position of cable on the base
[IMG][/IMG]
look at your cable position it's lined with the distributor clamp
[IMG][/IMG]
This is an aftermarket distributor. Also, the base timing on mine has been changed from what factory was. Among other reasons.
Reply
Old May 21, 2014 | 03:29 PM
  #86  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Originally Posted by ch@0s
If it was 180 out it would not run.
Just talked to 2 people who said they've had it run 180 out.
Reply
Old May 21, 2014 | 03:30 PM
  #87  
Tom400CFI's Avatar
Tom400CFI
Team Owner
Pro Mechanic
20 Year Member
 
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Default

^It doesn't really matter where the distributor body is oriented (where the "cap is pointing")


Originally Posted by DanielRicany
I think you're mistaken. I've had 3 people from 3 different shops come over and take a look, they all agreed that it was 180 out. Plus, I took my old cam and my old timing gear, put the gear on the dowel pin on the cam and had the timing mark at 6 oclock. In the position, cylinder 1 intake valve just finished closing, meaning that it was time to fire the cylinder, I rotated it clock wise, the next valve up was the exhaust valve, then immediately after, the intake.
It's really hard to believe that you "fix cars for a living" but you can't see this basic thing.

You JUST explained the cycles of a 4 stroke engine above. Tell us: if the spark fires between exhaust and intake TDC with both valves open (overlap and no cylinder pressure).....HOW IS THE ENGINE GOING TO RUN???

It won't. Your engine can't be 180 and run. It's not 180 out.
Reply
Old May 21, 2014 | 03:33 PM
  #88  
ch@0s's Avatar
ch@0s
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Default

Originally Posted by DanielRicany
Just talked to 2 people who said they've had it run 180 out.
Well tell those 2 people to fix it for you.
I can't tell how many times I have had friends or other so called techs replace and intake or dizzy then come to me because the car would not start. The problem was always the same.

Last edited by ch@0s; May 21, 2014 at 03:42 PM.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old May 21, 2014 | 03:37 PM
  #89  
cgantner5150's Avatar
cgantner5150
Pro
10 Year Member
 
Joined: Feb 2010
Posts: 677
Likes: 3
From: Metairie LA
Default

This is getting absolutely ridiculous.
This reminds me of an autozone employee who insisted I did not have a factory chevy big block 454 in my 72 Monte Carlo because the distributor was not in the front of the engine. He refused to sell me a Comp Cam. I had to sign a waiver for him to sell it to me. Haha.
Reply
Old May 21, 2014 | 03:42 PM
  #90  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Originally Posted by Tom400CFI
^It doesn't really matter where the distributor body is oriented (where the "cap is pointing")



It's really hard to believe that you "fix cars for a living" but you can't see this basic thing.

You JUST explained the cycles of a 4 stroke engine above. Tell us: if the spark fires between exhaust and intake TDC with both valves open (overlap and no cylinder pressure).....HOW IS THE ENGINE GOING TO RUN???

It won't. Your engine can't be 180 and run. It's not 180 out.
I never said compression happened during overlap. When the camshaft was at the 6 o'clock mark, both valves were closed. Rotate the cam clockwise, go maybe 3/4 of a turn, now its the exhaust valve open, right before the exhaust valve closes the intake starts opening, then it repeats the process. Right after that intake valve is closed, according to the cam lobes, the cylinder is firing.

Did no one watch my video?
Reply
Old May 21, 2014 | 03:49 PM
  #91  
QCVette's Avatar
QCVette
Le Mans Master
15 Year Member
Active Streak: 90 Days
Liked
Top Answer: 3
 
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
Default

Originally Posted by Tom400CFI
^It doesn't really matter where the distributor body is oriented (where the "cap is pointing")

It's really hard to believe that you "fix cars for a living" but you can't see this basic thing.

You JUST explained the cycles of a 4 stroke engine above. Tell us: if the spark fires between exhaust and intake TDC with both valves open (overlap and no cylinder pressure).....HOW IS THE ENGINE GOING TO RUN???

It won't. Your engine can't be 180 and run. It's not 180 out.


I have purposely put the distributor body in different orientation on a couple of motor swaps so the wiring was easier, but it does not have any effect on the car running. It is only the position of the rotor matching to the cap/wire that needs to fire.

You said you have had 3 guys from 3 shops tell you it is 180° out, then you need to find some new shops.
Reply
Old May 21, 2014 | 03:53 PM
  #92  
ch@0s's Avatar
ch@0s
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Default

Originally Posted by QCVette


I have purposely put the distributor body in different orientation on a couple of motor swaps so the wiring was easier, but it does not have any effect on the car running. It is only the position of the rotor matching to the cap/wire that needs to fire.

You said you have had 3 guys from 3 shops tell you it is 180° out, then you need to find some new shops.
Keep in mind, he is probably talking to people who have never seen a dizzy before.
Reply
Old May 21, 2014 | 04:20 PM
  #93  
Tom400CFI's Avatar
Tom400CFI
Team Owner
Pro Mechanic
20 Year Member
 
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Default

Originally Posted by DanielRicany
I never said compression happened during overlap.
I know you didn't say that. I never said you did!


Originally Posted by DanielRicany
right before the exhaust valve closes the intake starts opening,
And where is the piston at this point? It's at TDC. There is no compression, there is no fuel. You throw a spark at that point (which would be your 180 out) and guess what?? NO FIRE! Ding ding ding!! The engine won't run, buddy!



Originally Posted by DanielRicany
Did no one watch my video?
We all did which is why we're all shaking our heads at you. Palm slapping, if you will.
Reply
Old May 21, 2014 | 04:21 PM
  #94  
GREGGPENN's Avatar
GREGGPENN
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Default

Do 85's have the same reference wire that 89's have? You know the (brown) one you have to disconnect before setting the timing? Have you done so? Does the 85 bin have the same offset shown in later bins -- where you indicate the mechanical advance locked into your distributor?

Are you sure you have 35-deg total advance AND your balancer hasn't slipped, and you set the timing right and you've indicated base timing in your bin?

Anyone drive a car with the timing 10-20 degree's out? Anyone impressed with how that ran?

Lots to f-up there.
Reply
Old May 21, 2014 | 04:34 PM
  #95  
Tapio@FTTRacing's Avatar
Tapio@FTTRacing
Advanced
 
Joined: Jul 2013
Posts: 92
Likes: 2
Default

Since you like to tear your engine down, try this: take your driver side valve cover off. rotate your crank untill your #1 exhaust valve just finish closing and #1 intake valve starts to open. Now turn your crank one full turn. Where are your timing marks and where is your dist. rotor? I know where they going to be, but since you like to learn new, you should try it
Reply
Old May 21, 2014 | 05:00 PM
  #96  
bjankuski's Avatar
bjankuski
Safety Car
20 Year Member
Photogenic
Liked
Top Answer: 1
 
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Default

Originally Posted by DanielRicany
I never said compression happened during overlap. When the camshaft was at the 6 o'clock mark, both valves were closed. Rotate the cam clockwise, go maybe 3/4 of a turn, now its the exhaust valve open, right before the exhaust valve closes the intake starts opening, then it repeats the process. Right after that intake valve is closed, according to the cam lobes, the cylinder is firing.

Did no one watch my video?
Daniel, I watched your video and it is correct, it was pointed at #6 as stated by a few people. When you install the cam it is easier to see if the cam is installed correctly by lining the crank up at 12:00 and the cam at 6:00, so that is how the most people install the cam. The issue is you cannot install and line up the distributor at this position on number one cylinder because it will be 180 degrees out and the car will not run. If you wanted to install the distributor when the cam and crank were lined up you would install it so the rotor was pointing at cylinder #6 like your video showed. Otherwise you would turn the engine over 1 revolution and install the distributor at cylinder #1 when the crank and cam marks are at 12:00.

Your distributor is installed correctly and the distributor is not 180 degrees out. The engine will not run at 180 degrees out no matter what your two mechanic friends said.
Reply
Old May 21, 2014 | 05:24 PM
  #97  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Okay, you guys are right, I was wrong. I got confused. Sorry.
Reply

Get notified of new replies

To what's holding me back?

Old May 22, 2014 | 12:15 AM
  #98  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Default

I can't believe this thread is for real. I think Daniel is having a good laugh at the rest of the forum.
Reply
Old May 22, 2014 | 10:21 AM
  #99  
Tom400CFI's Avatar
Tom400CFI
Team Owner
Pro Mechanic
20 Year Member
 
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Default

It's hard to tell. 90% of his threads/posts just scream "TROLL!" to me. I mean...who seriously asks these questions and has these issues, this often, this fast....very questionable. It has the ring of "84L83/85L98" et al. But then he posts a video which is a pretty good indicator that actual work may have been done.

What ever the case....He claims to be a mechanic....I sure wouldn't want him working on MY car! Wow.
Reply
Old May 22, 2014 | 10:36 AM
  #100  
DanielRicany's Avatar
DanielRicany
Thread Starter
Melting Slicks
 
Joined: Jun 2013
Posts: 3,065
Likes: 39
Default

Originally Posted by Tom400CFI
It's hard to tell. 90% of his threads/posts just scream "TROLL!" to me. I mean...who seriously asks these questions and has these issues, this often, this fast....very questionable. It has the ring of "84L83/85L98" et al. But then he posts a video which is a pretty good indicator that actual work may have been done.

What ever the case....He claims to be a mechanic....I sure wouldn't want him working on MY car! Wow.
You're just an *** hole to everybody. I come to you for help and you insult me and put me down. You can go screw.
Reply



All times are GMT -4. The time now is 07:38 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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