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

what does red hot glowing header mean ???

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Old Nov 12, 2007 | 02:29 PM
  #21  
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Originally Posted by emo-vet
Originally Posted by rodj
Originally Posted by emo-vet
Just one quick last question, though.

When you are trying to install the dist at the correct dist timing
position, do you turn the motor over clockwise until it gets to the
exhaust stroke and position the mark on the balancer to line up with
the "0 " or " 5 " btdc marks on the timing pointer?

After this, do you position the rotor terminal to point to #1 cylinder
terminal in the dist cap?
You need to find TDC on the COMPRESSION stroke.

Pull #1 plug, put finger over spark hole, crank engine and feel for
compression. Look at damper timing mark and it should be near or just
past the stationary timing pointer. Then you line up with "0" mark.

After you have installed dist (rotor lined up with #1 lead in dist cap),
you set the timing with engine running (EST disconnected ) and a
timing light.
Thanks for the confirmation re: dist timing. I did what you mentioned,
but I lined it all up at 5 degrees btdc.

When I rotate by hand at the alternator nut and I am on the exhaust
stroke, I can start to feel compression for a bit. But then if I keep
going for a couple more turns of the alternator movement, by the
time I feel this compression, I'm nowhere near the " 0" degrees btdc
mark on the pointer!

Also, when I was turning over by hand, I was on the left hand side of
car near alternator and I was pulling motor anti-clock wise as this was
the only way I could get the motor to turn over by hand, as opposed
to bumping it with the starter. Is this a problem then?
Rotate the crankshaft in a clockwise direction (as viewed from the front
looking toward the rear).

Chin up.

Slowly, methodically - you'll work things out in due course.

.
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Old Nov 12, 2007 | 02:45 PM
  #22  
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Originally Posted by emo-vet
I feel that what has happened has really stuffed me know guys. The car
smells of smoke as the trans tunnel caught on fire and a little part of
the carpet /fibreglass burnt.

How do I ever get the smoke smell away?
For now, sprinkle some baking soda on the carpet. It absorbs odours
and as long as you don't get it wet, it vacuums out as easily as dust.
Try a small bit to convince yourself it will come out and if convinced,
apply more.

Once the car is running well, drive fast with the windows open.

Originally Posted by emo-vette
The fuel pressure was running at about 60 psi when it was idling, couldn't
get it much lower with out reg screw falling out.
You are able to see 30-35 psi while the engine is stopped but FP goes to
60 psi while the engine is running? My vote is that increased
voltage while the engine running may be raising pump flow and
if so, then this higher flow is exceeding the capacity of the return
line. Because the return line can not pass the necessary capacity,
pressure between the pump and regulator rises.


On the other hand, if you were once able to set the pressure lower
but can no longer adjust the regulator below 60 psi under any conditions,
then my vote is that something is now obstructing the return line.

Edit: Italicized statement above originally appeared as follows

Originally Posted by Slalom4me
My vote is that either engine vacuum is commanding the
regulator to open beyond your static setting (which I need to
think about) or that increased voltage while the engine running
is raising pump flow and then this higher flow is exceeding the
capacity of the return line.
When manifold vacuum is present at the port of a conventional
regulator, this reduces rather than increases pressure in the system between
the pump and the regulator. Manifold pressure (from boost) to a
secondary, rising rate regulator will cause pressure in the pump-to-reg
system to rise - potentially to the maximum pressure the pump is capable of.


.

Last edited by Slalom4me; Nov 12, 2007 at 04:47 PM.
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Old Nov 12, 2007 | 02:53 PM
  #23  
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Use Baking Soda, this is different than baking powder.

I can't say whether BS is that much different than BP as far as odour
absorption is concerned, but you do not want to accidently use one in
place of the other when making pancakes for the family.

.
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Old Nov 13, 2007 | 03:52 AM
  #24  
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hi guys,
im back again after a long day at work
thanks once again to slalom and you other guys for your great help

as soon as i got home after letting the whole car air out over night and today, i then washed car exteror,then sprinkled like you said carpet deodoriser and glen 20 disinfectant into whole car capet,i also vaccumed up where whole in carpet is to remove old smelly flakey charcoal bits,i think in time should be ok.

now r.e problem i think that where the hot glowing pipes were it was running very lean on those cylinders.
im thinking rite to get tom wong do do two chips for me,one chip just to adjust fuel and igntion timing tables to just try and get the thing to run and idle and then another chip with the list of all the mods i have already and will get next year so then onece i have rebuild my spare 4 bolt roller block i can just fit it all inc ther new custom worked chip.

do you think that i have the fuel preasure reg placed in the wrong position may be ??

what could be obstructing the return fuel line do you reackon ??
what should i do r.e the vaccum port then from manifold??
is it needed and tro strong like you were mentioning ?
#4 &#6 were glowing bright red last night
so what is first course of action guys please now ??
should i put olkd **** 22 lb injectors back in then do you reackon for the moment ??
just wait till i get new tune/chip ,then have another go at running the car as well as re check dist timing /spark plug locations ??
thanks alot
shae

Last edited by emo-vet; Nov 13, 2007 at 04:02 AM.
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Old Nov 13, 2007 | 09:44 AM
  #25  
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Originally Posted by emo-vet
the m.a.p is connected on the same pipe as the regulator vacuum pipe and they connect to back of manifold fitting which get conects to bottom of manifold chamber that is built in.
so it only goes to the one chmaber not indivdual runners
I'm not sure what your manifold looks like, but from what you're saying
it has some sort of plenum where vacuum from all cylinder runners
is connected.
If that is the case than your engine could work with stock ECU.
If you are using vacuum source from only one cylinder runner you can forget about tuning your engine with stock ECM.
Also, if your vacuum source is coming from only one cylinder, FPR
won't work properly.
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Old Nov 13, 2007 | 09:51 AM
  #26  
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Originally Posted by Slalom4me

When manifold vacuum is present at the port of a conventional
regulator, this reduces rather than increases pressure in the system between
the pump and the regulator.
This is exactly where I'm shooting at. ITB manifolds tipically have very
low vacuum.

And if emo-vet is using vacuum from only one cylinder, there is NO WAY
that his engine will run right ( edit: with stock ECM )

Last edited by Sliding; Nov 13, 2007 at 09:59 AM.
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Old Nov 13, 2007 | 01:25 PM
  #27  
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Originally Posted by emo-vet
So, what is first course of action guys please now ?
Print off the thread, draw boxes beside each suggestion
& question made to date, tick each one as you work through
the list and then report back with your findings.

.
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Old Nov 13, 2007 | 02:22 PM
  #28  
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Originally Posted by Sliding
I'm not sure what your manifold looks like, but from what you're saying
it has some sort of plenum where vacuum from all cylinder runners
is connected.
If that is the case than your engine could work with stock ECU.
If you are using vacuum source from only one cylinder runner you can forget about tuning your engine with stock ECM.
Also, if your vacuum source is coming from only one cylinder, FPR
won't work properly.

hi sliding,
yes mate,my manifold base at bottom has a built in vacuum chamber ito each runner,no problem there.
slalom4me, do you think that my adj fuel regualator is in the ok position located on drivers side after fuel rail location ??
what about how i hooked up the i.a.c,can that stuff things up for me at all?
so what praesure should i have 30 lb injectors at?,or should i put 22 lb back in ?
i will do what you said slalom,i will print of questions/answers and go thru all of them!
thanks
shae
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Old Nov 13, 2007 | 03:08 PM
  #29  
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IF you have possibility, you could try and hook up a vacuum gauge to manifold and check readings to make sure that map sensor and FPR
are getting proper vacuum to work with.
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Old Nov 13, 2007 | 03:10 PM
  #30  
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headers glowing are from 2 things. Lean mixtures or Late timing. It's odd that it's only on 2 so I would triple check the plugs, wires and wires on the dizzy.

My headers glowed a bit when I was first tuning my motor and it was due to late timing.
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Old Nov 14, 2007 | 04:09 AM
  #31  
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hi sliding and pryderei,
thanks for your helpful info also!
cheers
shae
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Old Nov 14, 2007 | 07:20 PM
  #32  
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Straight up question..

Have you gone back and double checked the routing of plug wires and distributor installation?
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Old Nov 14, 2007 | 08:18 PM
  #33  
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I remember the first time when I accidentally set the base timing to 8 degrees ATDC on a crappy carbed car. The car felt slow, sluggish and the carpet covering the transmission tunnel felt unusually warm against my leg. My dad told me to pop the hood and we saw the exhaust manifolds glowing. It was the combustion happening in the exhaust manifold which was essentially being wasted there instead working to drive up the piston in the next cycle. Yes, it is true that retarded timing essentially makes cars feel "retarded", run hot and slow at the same time.
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Old Nov 14, 2007 | 09:44 PM
  #34  
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Originally Posted by emo-vet
hi guys,
just wandering what a red hot glowing exhasut header mean ??
It means, "Hey honey, grab the marshmallows, huh?"
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Old Nov 15, 2007 | 03:40 AM
  #35  
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Originally Posted by RainDelay
Straight up question..

Have you gone back and double checked the routing of plug wires and distributor installation?
hi raindelay,
thanks for asking on my progress .
on the weekend im going to re set tps,re wire plug leads,check over fuel regulator,dist timing,base timing and see how we go again.
also i did what slalom suggested and put baking soda on intertior carpet where fire was also.
i will keep you guys posted ok.
cheers
shae
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Old Dec 16, 2007 | 10:23 AM
  #36  
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Any news about this?
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Old Dec 16, 2007 | 10:36 AM
  #37  
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Check your timing. I had redone the heads on another vehicle of mine (94 Ranger) and the exhaust manifold was glowing red also. Reset the timing and it was fine.
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Old Dec 17, 2007 | 02:07 AM
  #38  
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emo-vet, you didn't mention it, but did you adjust the valves on your engine lately?
It sounds like you tightened a couple down too far, keeping the valve open during combustion. As for the fire on the headers, that sounds like oil dripped on them while you adjusted the valves.
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Old Dec 17, 2007 | 02:47 AM
  #39  
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hi there guys,
how are ya!
r.e the glowing headers i had and the valves, i didnt even touch the valves at all actually guys.
so im thinking that it had some thing to do with timing or fuel i guess.
but now i have just brought a heltech e6x after market computer to install now which should help run this 8 t/b intake!
thanks for the interest/enquiry again
merry x-mas and happy safe new year to you all!
cheers guys
shae
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