My blown BBC has glowing red hedders - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 02-01-2012, 11:23 AM
crazypj's Avatar
I fake being smart
 
Join Date: Sep 2011
Location: Altamonte Florida
Age: 57
Posts: 35
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Even N/A engines will make tubular headers glow red if you hold at 2~3,000 rpm, which part of hot exhaust gas didn't you understand?
Steel starts coloring around 900 degrees f, if the wrong cam is fitted and valve is opening while combustion is taking place the pipes will glow real quick even if timing and A/F ratio's are perfect stainless steel or titanium pipes are often made of thinner gauge material and glow real quick at any rpm above idle
If he was using cast manifolds I would say there is a major issue
As it stands, it's more a 'fine tuning' thing and I think a trip to dyno will be quickest /cheapest solution

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 02-01-2012, 11:56 AM
Registered User
 
Last photo:
Join Date: Jan 2012
Location: baton rouge la
Age: 49
Posts: 54
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by crazypj
Red hot headers seems pretty normal to me, zero airflow as it's not moving and takes about 30 sec.
Your using tube exhaust manifolds which are pretty thin, normal exhaust gas temps are in the 1,000~1,400 deg range which is plenty to make them glow.
What diameter pipes are you using?
They could be a restriction as your moving a LOT of gas through them.
You really need to get it on a dyno with multi gas analyser, it will be much cheaper than a re-build
Ok to.anwser this ? Headders.are.headmans yes pretty thin.2inch primarys with collector.cut.off.to.3.5 inches into.the.same.dia. Dyno max.see. Though muffs.


Im going to to fire up my other.streetrod.and see if they glow.same brand headder but 409w.in.83.gt mustang runnint.11.26 &10.09.on 200 shot
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 02-01-2012, 05:50 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,250
Wiki Edits: 9

Thanks: 105
Thanked 133 Times in 124 Posts
Can you stop having periods appear after every word or two in your posts? Along with your run on sentences, it makes your posts very difficult to read. I'm not throwing the grammar card, only trying to make it easier for others to provide help.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 02-01-2012, 06:35 PM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Quote:
Originally Posted by 68NovaSS
Can you stop having periods appear after every word or two in your posts? Along with your run on sentences, it makes your posts very difficult to read. I'm not throwing the grammar card, only trying to make it easier for others to provide help.
I noticed this in his early post
posting by phone?
mine does that (random periods) you really gotta pay attention
then its a pain to get rid of them
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 02-01-2012, 06:39 PM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 57
Posts: 5,238
Wiki Edits: 26

Thanks: 7
Thanked 119 Times in 104 Posts
Quote:
Originally Posted by crazypj
Even N/A engines will make tubular headers glow red if you hold at 2~3,000 rpm, which part of hot exhaust gas didn't you understand?
Steel starts coloring around 900 degrees f, if the wrong cam is fitted and valve is opening while combustion is taking place the pipes will glow real quick even if timing and A/F ratio's are perfect stainless steel or titanium pipes are often made of thinner gauge material and glow real quick at any rpm above idle
If he was using cast manifolds I would say there is a major issue
As it stands, it's more a 'fine tuning' thing and I think a trip to dyno will be quickest /cheapest solution
Your tagline under your name fits you perfectly
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 02-01-2012, 08:04 PM
Member
 
Last photo:
Join Date: Dec 2004
Location: San Antonio, Texas
Age: 50
Posts: 4,023
Wiki Edits: 0

Thanks: 0
Thanked 23 Times in 23 Posts
glowing header is fuel burning inside the header.

surge at idle means lean.

low timing at idle makes you turn up the idle screws which opens the throttle blades past the transfer slots which makes the mixture very rich.

when you advance the timing, the idle goes up and you turn down the idle speed which places the throttle blades in the correct postion, but it is leaner.

30 degrees at idle (locked) and richen up the idle mixture screws sounds like the cure to me.
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 02-01-2012, 08:18 PM
bigblockragtop's Avatar
Registered User
 
Join Date: Nov 2009
Location: new york
Posts: 186
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
I and others had suggested this. I think his fear is too much timing and detonation. The cure would be a boost retard or locked timing like you said. The locked timing makes for hard starts but a boost retard ignition box has a start retard also.
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 02-01-2012, 10:36 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,250
Wiki Edits: 9

Thanks: 105
Thanked 133 Times in 124 Posts
Surge, or blower roll, isn't necessarily a product of a lean motor, especially in a roots blown motor. I have blower roll and I'm rich at idle, the leaner I tune it the tamer it gets.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 02-02-2012, 03:43 AM
Registered User
 
Last photo:
Join Date: Jan 2012
Location: baton rouge la
Age: 49
Posts: 54
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
[QUOTE=bigblockragtop]I and others had suggested this. I think his fear is too much timing and detonation. The cure would be a boost retard or locked timing like you said. The locked timing makes for hard starts but a boost retard ignition box has a start retard also.[QUOTE]
A msd .Digtal.6.aould.take.care.of.the.cranking.cause.ot .retards.10°on.start.upplis.has.moe.feature

please.be.kind.my cell space.bar.to to colse.the.the.peroid.burrom.plis.i ogt.big thumbs.i.sid.not.ser.rhisphome.up to my touch that could be.rhe.problem.but yes.i can.say i.do have run.sentcences.but.hey i dropped.up in9rh.grade.but most.be.doong.somerhing right if.i got.7.cars.total

how.yoy lkke.thay.rhYs whay happens when i type fasr..i trt.as.besr.i can.sllwso gibe.i poor.boy.a.break.only got half.a.brain.of.you.know.what i mean
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 02-02-2012, 06:34 AM
Registered User
 

Last journal entry: Finally some floor!
Last photo:
Join Date: Dec 2011
Location: New Point,IN.
Age: 65
Posts: 64
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
[QUOTE=2fox][QUOTE=bigblockragtop]I and others had suggested this. I think his fear is too much timing and detonation. The cure would be a boost retard or locked timing like you said. The locked timing makes for hard starts but a boost retard ignition box has a start retard also.
Quote:
A msd .Digtal.6.aould.take.care.of.the.cranking.cause.ot .retards.10°on.start.upplis.has.moe.feature

please.be.kind.my cell space.bar.to to colse.the.the.peroid.burrom.plis.i ogt.big thumbs.i.sid.not.ser.rhisphome.up to my touch that could be.rhe.problem.but yes.i can.say i.do have run.sentcences.but.hey i dropped.up in9rh.grade.but most.be.doong.somerhing right if.i got.7.cars.total

how.yoy lkke.thay.rhYs whay happens when i type fasr..i trt.as.besr.i can.sllwso gibe.i poor.boy.a.break.only got half.a.brain.of.you.know.what i mean
WOWZA! SCARY!!!!!
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 02-02-2012, 07:14 AM
Registered User
 
Last photo:
Join Date: Jan 2012
Location: baton rouge la
Age: 49
Posts: 54
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
[QUOTE=StreetKruzer][QUOTE=2fox]
Quote:
Originally Posted by bigblockragtop
I and others had suggested this. I think his fear is too much timing and detonation. The cure would be a boost retard or locked timing like you said. The locked timing makes for hard starts but a boost retard ignition box has a start retard also. WOWZA! SCARY!!!!!
Did you like that.fast.typing ?.i thought.not so get what you can get out of it.of not.just dont post here.anymore
but everyone else.thanks for.all the.advise
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 02-02-2012, 08:38 AM
Registered User
 
Last photo:
Join Date: Jan 2012
Location: north east Ohio
Posts: 103
Wiki Edits: 0

Thanks: 2
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by 68NovaSS
Surge, or blower roll, isn't necessarily a product of a lean motor, especially in a roots blown motor. I have blower roll and I'm rich at idle, the leaner I tune it the tamer it gets.
X2 and i think you are rich off idle.i tuned my carbs with blocked pv,s and use a LC-1 a/f meter.
http://i1180.photobucket.com/albums/...1/100_4126.jpg

Last edited by metalstorm; 02-02-2012 at 08:55 AM.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 02-02-2012, 08:48 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,108
Wiki Edits: 0

Thanks: 17
Thanked 335 Times in 315 Posts
Glowing headers is usually from not enough ignition advance or too lean of fuel mixture. It could be something else but I would start there. It sounds like your fuel curve is really fubared, rich in some spots, lean in others. A few more degress of timing will help but I doubt its the cause of this problem. You need to boost reference your carbs as stated.
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 02-02-2012, 08:50 AM
Registered User
 
Last photo:
Join Date: Jan 2012
Location: baton rouge la
Age: 49
Posts: 54
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I been watxhing you.tube videos of.red glowing headders.even an indy car
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 02-02-2012, 08:58 AM
bigblockragtop's Avatar
Registered User
 
Join Date: Nov 2009
Location: new york
Posts: 186
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
ok now your just scaring me
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
need help finding hedders zenchal26 Engine 4 09-28-2011 06:17 PM
Hedman Elite hedders boss350 Engine 2 02-16-2007 01:03 PM
tri-y hedders for a hot 482 BBC dykkerdan Engine 9 12-22-2005 02:27 AM
66 Stang w/ 302 Hedders?!?!?! slavboy1 Engine 0 06-29-2004 08:16 PM
who makes hedders PropanePower Hotrodding Basics 7 04-01-2004 09:17 AM


All times are GMT -6. The time now is 06:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.