Why is my timing so high
#1
Why is my timing so high
I have a 360, bored .060 over, eagle rods Keith Black pistons magnum heads, new everything. I had a Mopar purple cam in it originally, and the timing ran way advance- around 30 initial and 50 or so total. I tried everything, re curved the distributor and all, still wanted all the timing. That camshaft wiped out after around 800 miles and I too it all apart to clean and put it back together this time with a comp cams XE268. It STILL wants all that timing. I'll probably just ignore it and give it what it wants, but why would it be doing this? Comp timing set installed at the o mark, crank keyway on the domed slot. Could the timing set cause it to want the timing? The damper is a Summit one, very good quality, and it lined up with 0 at TDC, I made sure to double check the second time putting it together so I don't think that's a problem at all.
#3
#5
Vacuum advance capped off, initial timing at 800-1000 rpm and total at 2000-2500 rpm. It has one light spring and one medium spring on the weights.
#7
#9
Mopar Lover
I Would install it O-Cam and O-Crank... I'm Guessing you used the ^-Diamond and have the cam advanced and the engine is not liking it...
I have seen some of these stamped wrong or what you might call defective casted.... Just my 2 cents...
But I would install it as stated above....
Keep up posted....
I have seen some of these stamped wrong or what you might call defective casted.... Just my 2 cents...
But I would install it as stated above....
Keep up posted....
#10
I Would install it O-Cam and O-Crank... I'm Guessing you used the ^-Diamond and have the cam advanced and the engine is not liking it...
I have seen some of these stamped wrong or what you might call defective casted.... Just my 2 cents...
But I would install it as stated above....
Keep up posted....
I have seen some of these stamped wrong or what you might call defective casted.... Just my 2 cents...
But I would install it as stated above....
Keep up posted....
You can barely see the stampings on this picture but it's the best I could find
#11
Mopar Lover
I think I would match it up with the old one or pick up a Cloyes set and see if that might fix the issue.
That cam is a "hush puppy" you should not be having this kind of an issue
Unless we have a problem somewhere else in the motor? Like an intake vacuum leak of something.
That cam is a "hush puppy" you should not be having this kind of an issue
Unless we have a problem somewhere else in the motor? Like an intake vacuum leak of something.
#12
Mopar Lover
c -
I'm thinking along the same lines as Bob, but don't forget the stupid stuff.
Is your timing marker in the right place and if you have an adjustable timing light, is it zeroed correctly?
You timing may be fine, but your readings off.
It's happened.
Archer
I'm thinking along the same lines as Bob, but don't forget the stupid stuff.
Is your timing marker in the right place and if you have an adjustable timing light, is it zeroed correctly?
You timing may be fine, but your readings off.
It's happened.
Archer
#13
Super Moderator
I'm thinking dampner has spun so timming marks are off. You need to veryfiey top dead center ..............
#14
#16
I tried checking the dampner with a homemade piston stop and it seems to be fine. However, I began messing with the idle mixture screws and it seemed to run better at lower timing. Soooo, could my carb be a factor in any way?
It's a Holley 600cfm I bought off Craigslist. Vacuum secondaries
It's a Holley 600cfm I bought off Craigslist. Vacuum secondaries
#18
I had it on another motor before and never had a problem. Guy sold it cheap because he could never get it to work right. He put on a wrong gasket and gas would dump in the motor through the power valve chamber. Even had the right gasket in the rebuild kit gave gave me with the carb.
#20
UPDATE: I messed with the carb enough to where it idled when the timing was turn back to where it should be. Guess the carb ended up being the problem after all. Thanks for all the help!
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