Rocker Arm Studs + More trouble now

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70_F100
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Re: Rocker Arm Studs + More trouble now

Post by 70_F100 »

Fordtastic wrote:when i adjust the timing do i need to plug up the hole on the side of the carb for the pcv valve too? and if so do i plug the hole into the valve cover it sits on?

i need to invest in those allen lock rocker arm nuts......

btw 30 mins and 1 qt of oil all over the place later i adjusted them with it running... I can definetly say every pushrod is throwing tons of oil out of it. lol
They make little "stopper" clips to help with that... :D
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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Re: Rocker Arm Studs + More trouble now

Post by DuckRyder »

Did you listen around with a hose (a pry bar also works) as outlined by 70_F100?
Robert
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"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

stopped clips eh?

I took it out on a test run up to 50mph in some hilly areas and such.. it seems to hesitate and surge .. doesnt like climbing hills too well.. I didnt have to floor it but i definetly wasnt impressed with it. I have the timing set at 10 btdc.. is this the wrong setting?

Even after I adjusted the rocker arm on #6 exhaust it would still chatter for a second then stop for a bit and then do it again.. I could actually see it happening .... Almost like it was bobbing up and down extra times... Then sometimes it would quiet down for fairly long periods of time.

The other knocking that seems to be coming from near the bottom of the motor (sounds basically like knocking on a peice of wood) is still around and seems to get worse to how much it happens the longer the truck runs.. almost I would say a slower rate than the rocker on #6.. if i cool it off it wont do it for a bit then intermitently start doing it till the point where it does it all the time at idle.. i cant hear it at higher rpm but doesnt mean it isnt there.

oil presure is still good.. and all fluids are the places they belong...

Anyhow I stuck it out in the rain tonight as punishment for being a huge pain in my rear

If anyone can help or has ideas please feel free to post... im starting to feel its nothing more than a boat anchor
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

DuckRyder wrote:Did you listen around with a hose (a pry bar also works) as outlined by 70_F100?
for the deep sounds knock i havent done that yet.. ill get on that in the AM.
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Re: Rocker Arm Studs + More trouble now

Post by fordman »

sticking valve? what do you guys think? transmission fluid? or marvel mystery oil?
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

in regards to the deep sounding knock it is the loudest at the oil pan... it does transmit up my shifter pretty loud too... it doesnt get louder with clutch in our out though. Im hating to say it but i got this icky feeling its a rod knock caused from when the oil presure dropped from the crummy but new only for break-in fram oil filter (soon as that filter was swapped oil presure returned to normal. i will get a hose or pry bar on it tomorrow. Im fed up with the thing for the day!!!
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Re: Rocker Arm Studs + More trouble now

Post by 70_F100 »

Check the end play on the crankshaft.

I worked on a 289 many years ago in a Cougar that had had a crankshaft kit put in it, and they had ground the thrust surfaces on the crank. The end play was excessive, and it had a knock that sounded similar to what you've described.

A rod knock usually won't sound "dull". And, since you only ran it a few minutes with the lower oil pressure, it's doubtful that it was caused by that.
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

70_F100 wrote:Check the end play on the crankshaft.

I worked on a 289 many years ago in a Cougar that had had a crankshaft kit put in it, and they had ground the thrust surfaces on the crank. The end play was excessive, and it had a knock that sounded similar to what you've described.

A rod knock usually won't sound "dull". And, since you only ran it a few minutes with the lower oil pressure, it's doubtful that it was caused by that.
if it is what you describe how do i fix it?"
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Re: Rocker Arm Studs + More trouble now

Post by 70_F100 »

Fordtastic wrote:
70_F100 wrote:Check the end play on the crankshaft.

I worked on a 289 many years ago in a Cougar that had had a crankshaft kit put in it, and they had ground the thrust surfaces on the crank. The end play was excessive, and it had a knock that sounded similar to what you've described.

A rod knock usually won't sound "dull". And, since you only ran it a few minutes with the lower oil pressure, it's doubtful that it was caused by that.
if it is what you describe how do i fix it?"
If that is, in fact, the problem, there are only a couple of options.

It may be that the thrust bearing is worn because of a very stiff clutch. If that's the case, you may be able to get by with replacing the main bearings. (Always replace them as a set!!) You'll need to check the crankshaft for the measurement between the thrust surfaces to make sure they're not worn. :thup:

If the crankshaft is worn, you'll have to replace it, along with the bearings. :doh:
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

ok thanks for your reply...

my guess about it missing while driving is that the timing is off... Maybe my spark plug gap is wrong too? The book said .35 that seems awefully small but that is what i put them at.

I also will get a set of the stop locks and take it from there....

Am i at risk of blowing up the motor with this knocking from the lower end?
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Re: Rocker Arm Studs + More trouble now

Post by DuckRyder »

If it is in fact a bottom end knock, then yes there is a risk if blowing the engine up. It is hard to say without hearing it. If it is mains less so, rod greatly so.

For the rockers, I posted a link to some general information on Comp Cam's site that has a good bit of rocker information. Every small black that I recall ever being in (that didn't have bolt down rocker arms) has locking nuts on the rockers. I don't understand how the rockers keep loosening up.
Robert
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"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

ive got a nice set of poly locks coming for my rocker arms...

http://www.summitracing.com/parts/CCA-4604-16/

also i have looked at guide plates but im worried i may get a clearence issue if i put them on.

A client of my wifes used to build dragsters and heard of my ordeal with the noise in the engine.. He is going to help me identify it.. I hope its nothing serious because i love this truck but im out of money for more work for now.
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Re: Rocker Arm Studs + More trouble now

Post by Fordtastic »

it turns out my truck has a rod knock.. my wife's client that used to build dragsters when he was younger has offered to help/teach me to rebuild the whole engine for free!! We are also going to redo the heads and everything else that hasnt been replaced.. He even has the experience to regrind the vavles and do all of it and has all the tools! so its good news and bad news (do to the money issue) but im actually very excited about this learning experience!!! I will take pictures along the way so i can show you guys the progress and such...

I cant wait to do this!!!! I love working with tools and such and ever since I was a kid I have wanted to build a motor from the ground up!

Thanks again to all of you for your help!
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Re: Rocker Arm Studs + More trouble now

Post by DuckRyder »

Sorry to hear about the rod knock, I am glad to hear you will have help.
Robert
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"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
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