Engine Miss.. rounded lobes?

[64nailhead]

6 pages and you hadn't checked the timing?? Unfortunately, I can't say I haven't been there before (in my youth). If you are going to play around with a carb'd motor you need some basic tools - fuel/vacuum gauge, a timing light and a compression tester - to make basic tune up checks. Your vacuum gauge would have identified the issue and so would have the timing light.

But glad to hear you have it resolved.

 

[ttype]

Hey uhh... i'm curious to know... could you post what you find out as far as vacuum signal strength goes? I'm sure others are as curious... Motor On!

 

[pontiacgp]

Just wondering when you broke in the cam how did you set the timing?

 

[Clone TIE Pilot]

6 pages and you hadn't checked the timing?? Unfortunately, I can't say I haven't been there before (in my youth). If you are going to play around with a carb'd motor you need some basic tools - fuel/vacuum gauge, a timing light and a compression tester - to make basic tune up checks. Your vacuum gauge would have identified the issue and so would have the timing light.

But glad to hear you have it resolved.

I would add a dwell meter, multimeter, and Mityvac to that list too

 

[MrSony]

Just wondering when you broke in the cam how did you set the timing?

before I put the engine in the car, I brought #1 upto tdc on compression, looked at the mark on the balancer (TA Balancer I used has factory timing marks, as does my timing cover), rotated it by hand to 12btdc on the balancer/timing cover, and dropped the dizzy in with the rotor pointing to #1 and put the plug wires on accordingly and it popped off and once it got stable, I turned the idle up to 2500rpm, then down to 2000 20 minutes later, then down to 1500 20 minutes later, then upto 2500 again for another 20.

 

[pontiacgp]

before I put the engine in the car, I brought #1 upto tdc on compression, looked at the mark on the balancer (TA Balancer I used has factory timing marks, as does my timing cover), rotated it by hand to 12btdc on the balancer/timing cover, and dropped the dizzy in with the rotor pointing to #1 and put the plug wires on accordingly and it popped off and once it got stable, I turned the idle up to 2500rpm, then down to 2000 20 minutes later, then down to 1500 20 minutes later, then upto 2500 again for another 20.

no wonder your timing was off.....

buy yourself a timing gun, they aren't expensive

 

[Texas82GP]

Your dad doesn't have a timing light?

 

[ttype]

Hot Rodding is kinda like sports as a kid... yer folks likely told you that winning or losing is not as important as gettin' o there for a "team" effort in an effort to have fun. This place is a team! All players on it really look out for their little brothers, and often the guys who don't have the fanciest skates, the best rackets or even the expensive "name brand" equipment... but they are all welcome to get out and apply an effort.

Look up just for sh*ts and giggles a piston stop tool... and ask around to see what an apprentice Mechanic spends on personal tools before he is a "Journeyman" you'll find it is a lot, and yes, you do need good tools!!! It's an absolute must... but take that piston stop tool as an example... how expensive does it have to be when you are working on a fine ride, put together with your blood sweat and tears, and a drive to succeed. Imagine what your pals will think when you index a timing mark against your factory dampener, then compare it to the "0" as indicated by your factory timing pointer. When you get that compressor testor for your tune-up, think of how many ways you can use it, and how many details you can actually test with it... just sayin'! Use a common marking point for your "before TDC" and that very same point (without messing around with your "testor tool"), you "could" use a dress makers' tape to calculate the distance between YOUR marks, divide them equally to "calculate your TRUE TDC and mark your balancer accordingly. Paint or modify that factory timing tab to "reflect" your new "calculated" zero mark to achieve a proper starting point for your tune-up. Some have removed the porcelain and conductor from non service-able spark plugs, hogged them out with the means available to them, and add a bolt, or weld a nut to that metallic leftover, spin a threaded rod into that with a jam nut, and they now have "official" bragging rights that they can find TRUE TDC for practically any engine without fancy shmancy tools... even the big guys out there started with whatever means they had... and not everyone gets into this hobby with a complete "mechanics'" tool set. Have fun!!!

 

[ttype]

There are conditions to the use of such devices!!! Disable your starting circuit is the first thing!!! Remove all your spark plugs(because that will le you grab that balancer with a good "two hander", and then turn your motor over manually this way(for your first mark!) then that way for your second mark! You're halfway there!!! It's so simple that you could use a piece of paper the same length as your marks' distance, fold it in two, then mark your zero... TAH DAHHH! There are discrepancies in almost everything that is mass produced... what hav you got to lose? Or gain? Fuel economy! Clean tailpipe emissions?(if required, hmmmm) patting your own back every time you wonder why you really have to change motor oil that looks so much better than the last few intervals worth... you might just impress yourself...

 

[ttype]

Safety is a must! Disable that starting circuit before you start inserting your extremities in th path of moving parts