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Topic Review (Newest First)
02-22-2013 02:35 PM
Jaykobo Sorry for late ansewer guys...was busy


the problem was fixed ......the new starter fix the problem

Thanks guys for your help all
02-04-2013 06:25 PM
oldbogie
Quote:
Originally Posted by Jaykobo View Post
it's 10.5 CR........I think the KB climer piston...when it getting tight to the cylinder wall....extended with the heat as the tech tell me....it's the first start for the engine and need to be trained....I just run it totally 24hr.....I belive the engine will work much better after it's trained and turn easily

and take a round with it slowly for 30 km...........some told me the timing....and I adjust it ....sure it work greater but the starter the same.....also the ICM ...was bad and I change it with Dyno one from summit

Davis Unified Ignition Dyna-Modules 000444 - SummitRacing.com


it's miss fire the engine and make it shut off....I replace it with cheap used one from the JY... 10 $us and work fine...but the part not reliable.


and I read a lot talking about cables....I check it for worn,cut,corrosion,heat and test it with clamp meter.... .it's ok....even though I bought new cables from local shop....the same

I replace the starter with AC delco remunfactured....the same



I have 3 engines in my home.....I but the old starter on stock 305 engine working great with the same cables....but on the first one....slowly

the starter working great when the battery full charged 13.4 volt.......but once the drop to 12.75...it's start working weak.....when it's 12.2 V the starter almost stop....I changed the battery with higher amper "the stock was 73A I bought 78A......work little bit better...so I finally decide the starter is the problem

so I,m sure it's the starter.......sorry for taking long.....now all is fine only the starter
The little appreciated wire that runs from the ignition switch to the solenoid by way of several connectors can also show up as what appears to be a starter problem. It gets old, loose, corroded, etc. reducing the voltage on the solenoid that is located atop the starter motor. This thing has two jobs on a GM it switches a set of contactor lugs that connects the battery bus cable to the starter. It also moves the starter pinion gear into contact with the ring gear at the same time.

If it is not receiving full voltage to the solenoid terminal it will not make a solid enough perhaps not even contact with the contactor terminals which will result in the motor turning slowly if at all, or may be unstable where it runs fine one time and not at another time. This condition can also be caused by dirty, burnt or otherwise damaged contacts of the contactor lugs themselves.

A test for weak power being applied to the solenoid is to jumper that small terminal on the solenoid directly to the battery, if it spins the starter hard every time you connect it youíre onto the problem, it not itís back to square one.

If this has the large old fashion starter on it, it can be replaced by the newer permanent magnet type which suck a lot less power off the battery as these only have armature coils no electro field magnets to take power as well. This will also provide some air space between the motor and headers.

Bogie
02-04-2013 02:05 PM
cobalt327
Quote:
Originally Posted by Jaykobo View Post
Gap is 30 for the first ring......16 for the 2ed and 3th......
Someone's running KB's.
02-04-2013 07:39 AM
Jaykobo Gap is 30 for the first ring......16 for the 2ed and 3th......
02-04-2013 07:29 AM
Greg T Possibility that you don't have enough piston/bore clearance and the motor is nearly seizing. If that is the case you'll be destroying your pistons and bores. Maybe your ring end gaps are too tight, also?
02-04-2013 06:55 AM
Jaykobo yes.....in the rest it's 12.75V ....I already bought the starter......and will see what happen with the new one.....this all will be checked this thrusday......I will replay if the problem is fixed
02-03-2013 11:26 PM
cobalt327 If "I didn't check the Amp draw.....just the voltage it's drop to 11.5V to 10.8 while crancking" means the CRANKING voltage is between 11.5 and 10.8, that might be OK. If this is saying it starts out at 11.5 AT REST and drops from there when cranking, it's not OK.
02-03-2013 11:11 PM
Greg T 11.5 volts WHILE CRANKING is fine. If you dip to low 10s or lower you have trouble. Nothing wrong at all with 11.5 volts under full load.
02-03-2013 02:12 PM
vinniekq2 North American batteries are 12.6 volts.This includes Canada,United States and Mexico
02-03-2013 02:11 PM
cobalt327
Quote:
Originally Posted by Jaykobo View Post
hi......I just call the battery loacl dealer


this drop is normal for all batteries in Asia........the USA battery is powerful that's why it's not drop much man


if it drop less than 11V while cranking.....it need rechared or replace



but more ...it's ok...................why this diffrence even in battery???

and he told me....the Rocket,Voltage battries in Asia are the same

I have now Korean battery....and I ask brother to check dad car..11.5v while crancking...the same drop...so I think USA battery build for harsh weather
IDK about the diff between an Asian and an American battery, but even my small 12V lawnmower battery would be dead at 11.5V. Not talking about while the engine is being cranked, I'm talking about the battery at rest after the surface charge is removed.

The way a wet cell battery is configured, I don't see how it could be built to have less voltage regardless of where it made, unless the value of a volt is different there than here. Which I can't see happening, either. But who knows- stranger things have happened I suppose.
02-03-2013 02:05 PM
Jaykobo hi......I just call the battery loacl dealer


this drop is normal for all batteries in Asia........the USA battery is powerful that's why it's not drop much man


if it drop less than 11V while cranking.....it need rechared or replace



but more ...it's ok...................why this diffrence even in battery???

and he told me....the Rocket,Voltage battries in Asia are the same

I have now Korean battery....and I ask brother to check dad car..11.5v while crancking...the same drop...so I think USA battery build for harsh weather
02-03-2013 11:47 AM
Jaykobo
Quote:
Originally Posted by cobalt327 View Post
I'm not sure if I'm reading this right, but the battery should have more than 11.5V at rest. 11.5V is basically a dead battery.
really!!!!this is the new one...and have warranty on it and I bought it 2 weeks ago....XP...I will recheck the voltage again and check my ampers too this off day....my off only in thursday and friday.....will check it


I already bought the starter...it's good for the OEM starter to live 20 years I think.....is the torque is reading is normal?about 110ft.lbs??
02-03-2013 11:35 AM
cobalt327
Quote:
Originally Posted by jaykobo
I didn't check the Amp draw.....just the voltage it's drop to 11.5V to 10.8 while crancking...
I'm not sure if I'm reading this right, but the battery should have more than 11.5V at rest. 11.5V is basically a dead battery.
02-03-2013 10:49 AM
Jaykobo oh yes....I try all....and sorry for my bad language...it's the 2ed language

I didn't check the Amp draw.....just the voltage it's drop to 11.5V to 10.8 while crancking

the battery 100% good..I mean the new one ...and the battery is still in the stock location

I do the torque turn it's reach 110 ft.lbs when it's in compression stroke....but not exactly about the # but not higher than 115ft.lbs

I,m away from the car now so I just work on it on my off days .....ok


thanks for helping man
02-03-2013 10:20 AM
vinniekq2 Jaykobo,what is your first language? please do a load test on your battery
consider an ignition kill switch if the engine is hard to crank due to high static spark advance.
do a draw test on the starter.
do a load test on your battery using your cables if the battery is good.
Do a draw test with your starter using your cables,all to make sure the parts work together.
Is you battery in the stock location?
Put a torque wrench on your engine to measure how hard it is to rotate your engine.
Do a starter motor draw test with the ignition disconnected.

do some math
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