LT1-LT4 Modifications 1993-97 Gen II Small Block V8

help me analyze this spark plug

Thread Tools
 
Search this Thread
 
Old Jan 1, 2016 | 11:56 AM
  #41  
Shownomercy's Avatar
Man-Crush Warning
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Jun 2009
Posts: 3,195
Likes: 129
Default

I have my TR6s are a .035 area gap, and they are super clean. As pointed out, if you are trying to ignite oil, you really need a glow plug...

Have you tried to measure crankcase pressure and see if you can lesson it?
Reply
Old Jan 1, 2016 | 06:42 PM
  #42  
AdsoYo's Avatar
Thread Starter
12 Second Club
15 Year Member
Photogenic
Photoriffic
Community Favorite
iTrader: (1)
 
Joined: Sep 2007
Posts: 1,444
Likes: 107
From: Bend, OR
Default

Originally Posted by 96capricemgr
My junk runs fine at a .045 gap making 100+hp more than yours with a stock coil and opti, but it isn't trying to light oil. At your power level an opti and .05 would work just fine.
Try running a bigger ground cable from the engine to battery and chassis to battery long as you are playing. It can help clean up marginal spark and generally make everything electrical work a little better.
Electrical stuff can use a bigger "intake and exhaust" just like an engine.
I actually upgraded the big 3 a few years ago with 2 gauge wire and you're right, car loves it.

Originally Posted by Shownomercy
I have my TR6s are a .035 area gap, and they are super clean. As pointed out, if you are trying to ignite oil, you really need a glow plug...

Have you tried to measure crankcase pressure and see if you can lesson it?
The wider gap is mainly to achieve a stronger flame kernel. Since 24x allows me to do it, why not take advantage of it? I'm also not sure what you mean by measure and lessen crankcase pressure? I've been shopping for a compression tester...
Reply
Old Jan 1, 2016 | 06:59 PM
  #43  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

He is suggesting ring seal is poor pushing excess pressure through the pcv system and that is where some of the oil is getting to the chambers from.
Reply
Old Jan 1, 2016 | 08:01 PM
  #44  
Shownomercy's Avatar
Man-Crush Warning
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Jun 2009
Posts: 3,195
Likes: 129
Default

Originally Posted by 96capricemgr
He is suggesting ring seal is poor pushing excess pressure through the pcv system and that is where some of the oil is getting to the chambers from.
Pretty much.

I run a decently wide gap on mine, ~.022 top and do not run stock PCV system. Unless you have rings that never sat, or glazed the cylinders I can't see why you would have so much oil in the chambers. Unless its being sucked in via valve seals or intake tract. Too much crankcase pressure will play hell with your rings and their sealing though.
Reply
Old Jan 2, 2016 | 05:33 AM
  #45  
BIGsmokey10's Avatar
TECH Regular
iTrader: (3)
 
Joined: Apr 2012
Posts: 447
Likes: 0
From: michigan
Default

Double check the pcv system.

The fact that you have oil on All of them would pretty much rule out a intake gasket that may have cracked to the llitter valley area .


Can you do a leak down check on it? That would rule out the rings.



Is there a baffle on your valve cover where the hose is at?


15W50 is a bit excessive. That motor would have to have some sloppy bearing clearances to run that kindof oil. Do yyou have a oil pressure gauge on the engine besides factory sensor?

Is it pushing the dipstick out ?
Reply
Old Jan 3, 2016 | 04:09 AM
  #46  
AdsoYo's Avatar
Thread Starter
12 Second Club
15 Year Member
Photogenic
Photoriffic
Community Favorite
iTrader: (1)
 
Joined: Sep 2007
Posts: 1,444
Likes: 107
From: Bend, OR
Default

Originally Posted by BIGsmokey10
Double check the pcv system.

The fact that you have oil on All of them would pretty much rule out a intake gasket that may have cracked to the llitter valley area .


Can you do a leak down check on it? That would rule out the rings.



Is there a baffle on your valve cover where the hose is at?


15W50 is a bit excessive. That motor would have to have some sloppy bearing clearances to run that kindof oil. Do yyou have a oil pressure gauge on the engine besides factory sensor?

Is it pushing the dipstick out ?
I'm searching around online for a leak down/compression tester so I can do both. PCV system is stock, no baffles. Only oil pressure gauge is the stocker. Pressure is 60 psi at all times. It is not pushing the dipstick out.
Reply
Old Jan 3, 2016 | 08:35 AM
  #47  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

Are you sure the sheetmetal tray is on the bottom of the intake manifold?

If one understands the oiling system you would get that the system is going into bypass and staying there and that the excess oil is getting heated and circulated within the pump without ever going across the bearings. The pressure being stuck on bypass all the time would cause me to go thinner on the oil.

Pressure is NOT what keeps the bearings alive, flow is, the parts are basically hydroplaning across each other.
Reply
Old Jan 3, 2016 | 11:48 AM
  #48  
Kevin97ss's Avatar
TECH Enthusiast
 
Joined: Jul 2007
Posts: 563
Likes: 0
From: Central,NJ
Default

Originally Posted by 96capricemgr
Are you sure the sheetmetal tray is on the bottom of the intake manifold?

If one understands the oiling system you would get that the system is going into bypass and staying there and that the excess oil is getting heated and circulated within the pump without ever going across the bearings. The pressure being stuck on bypass all the time would cause me to go thinner on the oil.

Pressure is NOT what keeps the bearings alive, flow is, the parts are basically hydroplaning across each other.
Very good point! Assuming the gauge is reading correctly, the bearing clearance my not be loose enough for a 50 weight.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old Jan 3, 2016 | 11:54 AM
  #49  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

I should have expanded on the sheetmetal tray on the bottom of the intake, if left off it can contribute to pcv sucking oil.
Reply




All times are GMT -5. The time now is 01:04 PM.

story-0
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-1
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-2
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-3
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-4
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-5
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-6
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-7
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE