Zentar44_ed

iTrader: (1)

Here is the specs:

Brand new 12a barely broke-in (street-ported)
Holley 465cfm carb setup
timing : 5 deg retarded at idle
Holley red pump
regulated at 6psi

Issues:
I have the stock manifold on it till i can get a header...(yes i know i wont get full performance from the stock one)..and i just put a new exhaust system no cats, 2.5" exhaust..dumps right before the rear wheel on the passenger side...but if i drive it around for 10min and park i can open my hood and see the manifold glowing dull-red...and i dont mean just a little either the whole thing is...but the rest of the exhaust isnt...and it backfires out of the exhaust when it warms up...(i pulled into the shell station that was packed and it backfired...hehe..sounded like a cannon went off...scared the crap outta everyone..)and it smelled like raw gas after i put exhaust on it..while it was running...then i tuned it(leaned it)...now it smells like idk but it burns my eyes... and i have throttle issues from 2k to 3.5k...kinda wandering....

?Any ideas to why its glowing red hot...i dont like engine fires...so im hoping to get this fixed before it does...should i just wait till i get the header before driving it...

bumpstart

the glowing manifold is indicating that the motor is lean or heavily retarded, or both

if only one runner is glowing then its an issue with a primary or idle jet that side , or an air leak under the carb that side

if its both runners then the carb is jetted way too lean or the timing is way retarded

confirm your timing mark position is the correct one
-- if the pulley has been removed ( the 5th hole rivet ground off ) it may have been put back on 90 degrees out

the backfire is also pointing heavily at an air leak at the exhaust manifold,, or very retarded timing

Zentar44_ed

iTrader: (1)

its in time...i did this...(if you have a standard flywheel on,, ( view from rear ) then the bite missing from the back ring will be pointing at the exhaust at 3 oclock) then lined up the timing marks on the pulley, then the timing marks on the distributor...i enriched the fuel... it ran coller but i was day time couldnt tell if it was glowing...i found the leak in the exhaust...apartly the guy i took it to forgot to torque the manifold bolt down, so it backed off... um i have one more question...the idle wanders some and when it warms up it makes this eek noise from the carb area...goes away for a split second when u crack the throttle...im assuming thats a vac leak...it dont think its a intake manifold gasket its brand new...and i torqued it down to the specs...do u think it could be the carb gasket...

Jdrift

Hey said retarded timing. lol. But, he's got a point. Too much air in the mixture will cause egt's to spike. Carb tuning, intake leak.

bumpstart

could well be a leak at the phelonic spacer ( and also commonly from a loose top on the PCV valve )
[ and uncommonly from the carb throttle seals ]
though the screech is often from the water pump belt when the airpump is deleted
( put the 10a 550 water pump saver/helper belt on the spare pulley grooves )

kero on a brush while someone else holds an idle will find leaks very quickly !


if the motor is ported it may still want a little more initial timing than stock, hence the poor idle, and also the afterburning
try 5- 10 BTDC , not 5 ATDC

Zentar44_ed

iTrader: (1)

well re-tuned the carb the screws are 2 1/2 turns out...drove it around the block opened the hood still glowing red...how easy is it to be a tooth off on the distributor?

bumpstart

easy enough to get the dizzy wrong as you drop it down
when its done right,, its should be near the middle of the adjust on the base plate
and the reluctor vane should be directly opposite the inductive pickup ( leading )

Zentar44_ed

iTrader: (1)

ok i took some pics of the timing... so you guys can see wheres its at on the dizzy when my timing marks on the pulley are lined up... and replaced the intake manifold gasket and my carb to manifold gasket...still have this kinda pulsing eek noise from the front of the intak area...and its still glowing red hot...

Zentar44_ed

iTrader: (1)

Okay I think i might have figured it all out, but do you think this is it? I do have a exhaust leak I know that much to say the least. Which might mean air is getting into the exhaust manifold? That is one side of the combustion pyramid; next is the heat caused by the car running, and exhaust gases escaping the engine that are extremely hot, so there is the next side or the pyramid. The last one is fuel, simple unburned fuel caused by fouled plug on the rear rotor, no trailing ignition, and two 25+ year old coils, and distributor, and probably a weak ignitor I am suspecting because my leading one died a long time ago, and i took the trailing one and used it(if you wanted to know why my trailing doesn't work). That is all three sides of the combustion pyramid. I ask again do you think is the problem? Is this why I can light a cigarette off of my manifold?

Kentetsu

Fix your ignition system and you should be in good shape. That definitely sounds like the most likely suspect.

Good luck...





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Zentar44_ed

iTrader: (1)

it was my ignition system...never guess what it was...i feel like a idiot....i had the good ignitor in the trailing side and had it running my leading coil and plugs...i swapped the postion of the ignitor runs fine except the intake manifold leak i found when i spilled a cup of water where the intake manifold meets the engine...it killed the car...its a brand new manifold gasket...its the two middle ports where its leaking...now i need to find a way to fix that...and im good...but even with the leak it runs good...i can do a burn out from first gear to 4th....