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  #1 (permalink)  
Old 12-24-2006, 06:05 PM
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Engine wont turn fast.

Today I made an attempt to get the truck all wired up with the new engine and do the break in. The engine spins very slowly even without all the other things turned on 2 fans water pump and fuel pump. I thought maybe the starter was binding so I shimmed it. It spun a lot faster but not enough to light it up. The shims are super thin maybe 1/32 each. Does it need more shimming or more power. The battery is a 875 CCA fully charged and a jump box that can run 800 amps. Its a powermaster master torque starter. The engine is 10.5 CR but the starter can turn 18:1. Its a small block chevy. Shoot some ideas at me and let me know what you think.
Thanks for any replies.

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Old 12-24-2006, 06:10 PM
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Wire size, terminal connections? Ground? Just some ideas.
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Old 12-24-2006, 06:19 PM
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tite motor, try truning by hand
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Old 12-24-2006, 06:27 PM
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i would vote for more power. hook a charger up to the battery and see if it makes any dif
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Old 12-26-2006, 05:01 PM
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I have re checked everything and have 5 shims on starter and it spins better but still not enough. I have 4awg from positive to BAT+ on starter.The battery is a 875cca. with the jump box on or off it spins same amount. For the people that says it needs more power what do you suggest. A dry cell 16v racing battery? A red or yellow top optima? Or anything else that you guys run?
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Old 12-26-2006, 05:10 PM
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Try disconnecting the coil and see if it turns over faster. If it does your timing is to far advanced.
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Old 12-26-2006, 05:19 PM
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I have HEI and the everything is on a switch. Ignition, fuel pump, water pump, fan 1, fan2. They are all independent. The starter is on a push button switch. Its going slow even without everything else on.
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Old 12-26-2006, 05:28 PM
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Just to be clear. You tried turning the starter with no power going to the hei etc. ?
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Old 12-26-2006, 05:30 PM
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I allways run chassie grounds to the motor.clean all connection.
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Old 12-26-2006, 05:35 PM
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Quote:
Originally Posted by weirdbeard
Just to be clear. You tried turning the starter with no power going to the hei etc. ?
Originally I tried to fire it right up water, fuel, ign, and one fan and it just would turn over so I thought it was a power issue. Well with everything off same deal. I have only tried like twice without ignition on. besides that its always been on.

I do have the main power coming into the truck cab attached to the BAT side of starter like OEM. 4awg from POS to Starter, then above that I have lead running to cab on same post.
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Old 12-26-2006, 05:39 PM
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If your starter is hooked up correctly its really a no brainer, you should be fine. You've probably got too much initial advance with that much compression and the motor is kicking back on the starter. Sounds just like a low battery when that happens. Try to reduce your initial advance-

K
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Old 12-26-2006, 05:40 PM
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you should do like weirdbeard said and get it turning over with out trying to start it.pull all plugs out ,check grounds,it takes time and it's a pain in the ***,but has to be done!
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Old 12-26-2006, 05:46 PM
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Quote:
Originally Posted by 84 Monte Carlo
you should do like weirdbeard said and get it turning over with out trying to start it.pull all plugs out ,check grounds,it takes time and it's a pain in the ***,but has to be done!
It spins allright without plugs in but once there in it crawls. Im gonna recheck re sand grounds.
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Old 12-26-2006, 06:15 PM
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Weak starter....Have you tried a different one?
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Old 12-26-2006, 06:41 PM
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Quote:
Originally Posted by poncho62
Weak starter....Have you tried a different one?
brand new powermaster, although being new doesnt mean it has to be okay its the only one i have. I am going to put another ground cable to block
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