Update on new motor
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bigredlaguna
Podor
6 posters
G3GM :: G3 :: General Discussion
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Update on new motor
Got the motor fired and broke in the cam.
A few questions. The car gets super hot runs about 220 in the driveway, I haven't driven around yet. And can someone help me "purge" the air out of the system and what I need to do.
Also I burnt two plug wires and I'm getting a new set of 8. The motor doesn't seem to want to idle below 950-1000. It'll try to die. The cam is the XE274H comp cam. Any help on that is appreciated.
Since I accidentally burnt the number one plug wire I haven't been able to time it very well. And I burnt the number 2 plugs wire.
A few questions. The car gets super hot runs about 220 in the driveway, I haven't driven around yet. And can someone help me "purge" the air out of the system and what I need to do.
Also I burnt two plug wires and I'm getting a new set of 8. The motor doesn't seem to want to idle below 950-1000. It'll try to die. The cam is the XE274H comp cam. Any help on that is appreciated.
Since I accidentally burnt the number one plug wire I haven't been able to time it very well. And I burnt the number 2 plugs wire.
JF74chevelle- G3GM Member
- Street Cred : 0
Re: Update on new motor
Try a Spill Free Funnel from Lisle tools. It is a large funnel that attaches to the filler neck of the radiator. It raises the level of the coolant above the high spots in the system and helps push the air out, and it allows it to burp and keep the coolant level up. It should be at most parts stores and is fairly cheap. Make sure your mechanical fan clutch is working. Without air flow, it will overheat. Once you get the plug wires fixed, timing set and carb adjusted, if it still won't idle, check for vacuum leaks.
Podor- G3GM Member
- Street Cred : 2
Re: Update on new motor
I sometimes take the thermostat housing and thermostat out and fill it till it comes out of the intake there. That way I know the engine in full and no air in it.
fasrnur- G3GM Enthusiast
- Street Cred : 9
Re: Update on new motor
fasrnur wrote:I sometimes take the thermostat housing and thermostat out and fill it till it comes out of the intake there. That way I know the engine in full and no air in it.
I'll try this
JF74chevelle- G3GM Member
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Re: Update on new motor
How far out are the idle mix screws?
bigredlaguna- G3GM Senior Member
- Street Cred : 53
Re: Update on new motor
bigredlaguna wrote:How far out are the idle mix screws?
I haven't checked yet
JF74chevelle- G3GM Member
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Re: Update on new motor
bigredlaguna wrote:What is the timing set at?
I tried to set the timing but the plug wire burnt so I couldn't get a reading. I have a new set on the way
JF74chevelle- G3GM Member
- Street Cred : 0
Re: Update on new motor
Ok, get the timing set properly first, then work with the carb. Late timing can cause the issues with running hot and bad/no idle.
If there is a vacuum leak big enough to kill the engine, you would more than likely hear it. But check for leaks with a spray can of carb cleaner that has a straw and spray the vacuum lines, ports, and along the gaskets under the carb and between the heads and intake. Some guys like to use propane, if the engine speed changes, you found the leak.
Keep at it, this is the fun part!
If there is a vacuum leak big enough to kill the engine, you would more than likely hear it. But check for leaks with a spray can of carb cleaner that has a straw and spray the vacuum lines, ports, and along the gaskets under the carb and between the heads and intake. Some guys like to use propane, if the engine speed changes, you found the leak.
Keep at it, this is the fun part!
bigredlaguna- G3GM Senior Member
- Street Cred : 53
Re: Update on new motor
bigredlaguna wrote:Ok, get the timing set properly first, then work with the carb. Late timing can cause the issues with running hot and bad/no idle.
If there is a vacuum leak big enough to kill the engine, you would more than likely hear it. But check for leaks with a spray can of carb cleaner that has a straw and spray the vacuum lines, ports, and along the gaskets under the carb and between the heads and intake. Some guys like to use propane, if the engine speed changes, you found the leak.
Keep at it, this is the fun part!
Yeah, I don't want to run the engine with those burnt wires because I think it burnt them so bad I dropped those cylinders so I'm not going to fire it up till I get my wires. Then I'll set timing and adjust the valves and carb.
JF74chevelle- G3GM Member
- Street Cred : 0
Re: Update on new motor
Sometimes new motors will run a little hotter than normal due to tight tolerances, or at least that what a motor builders once told me. I usually drill a small hole in the termostat before putting it in. That Way air wont get trapped and its no problem getting the air out.
Hs1973- G3GM Enthusiast
- Street Cred : 14
Re: Update on new motor
Hs1973 wrote:Sometimes new motors will run a little hotter than normal due to tight tolerances, or at least that what a motor builders once told me. I usually drill a small hole in the termostat before putting it in. That Way air wont get trapped and its no problem getting the air out.
I'm still working on trying to get the motor to idle. I think I'll check the floats and clean out the idle circuit. Or throw it in the trash and get a Holley lol
JF74chevelle- G3GM Member
- Street Cred : 0
Re: Update on new motor
I bet you will get it going as it should, just keep plucking away at it and you will get there. When i first restored my chevelle it took almost a year before it was running and driving as i should. It had a lot of small issues that i needed to fix before it was reliable and working like i wanted it to. I had a carb issue that ended with a new edelbrock. And a driveline vibration that drove me nuts. Its not like on overhauling where its done in 7 days. ( i wonder how there cars work after 7 days) lol
Hs1973- G3GM Enthusiast
- Street Cred : 14
Re: Update on new motor
Forgot to tell you guys.....I found bent exhaust valves. Pulled the heads this morning and brought them to a machine shop. Hopefully get hem back soon.
JF74chevelle- G3GM Member
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Re: Update on new motor
That's too bad sir. You've had some terrible luck with this so far. It's got to get better. The cam being off surely caused the bent valves, huh?
fasrnur- G3GM Enthusiast
- Street Cred : 9
Re: Update on new motor
fasrnur wrote:That's too bad sir. You've had some terrible luck with this so far. It's got to get better. The cam being off surely caused the bent valves, huh?
Yeah but I'm not going to sweat it. I already dropped them off at a reputable machine shop and the price was good. I guess you live and learn and next motor I will definitely not be doing making this mistake again lol
JF74chevelle- G3GM Member
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Re: Update on new motor
Well that really sucks. Make sure none of the pushrods are bent either.
bracketchev1221- G3GM Enthusiast
- Street Cred : 16
Re: Update on new motor
bracketchev1221 wrote:Well that really sucks. Â Make sure none of the pushrods are bent either.
That is how I noticed it. I bought new ones.
JF74chevelle- G3GM Member
- Street Cred : 0
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