Kind of sounds like something is rubbing on the frame. I had an oil pan rubbing on the frame and it shook the truck and it got worse with rpm. I wouldn't think the engine would shake the whole truck with rubber motor mounts, even if it was out of balance.
Creampie Build
- Thread starter BlueWaffle
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BlueWaffle
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No its a heavy rotational shake...not an impact vibration if that makes sense.
Cutting-Edge Diesel
Active member
pulled the rear crank today and with Morgan's help I believe we found the problem.
The rear crank adapter has a dowel hole in it. But there is not a dowel pin on the crank. Some cranks have a hole in them and some do not. Lances did not. The dowel hole on the adapter is suppose to be 180* away from the key way on the crank gear.
Our theory was that when the crank adapter was removed to time the motor it was put on incorrectly causing the flex plate to not be installed correctly.
So to test this theory I had to remove the crank adapter to see the end of the crank and see the crank gear key way. What I found could be our issue.
Here is a diagram that Morgan made to show the proper location of the crank adapter dowel and the crank gear key way. (note the location of the key way and the dowel hole, 180* apart)
now this is lances motor (note it is 180* off the correct location)
this is with the adapter installed to give you a better idea
The rear crank adapter has a dowel hole in it. But there is not a dowel pin on the crank. Some cranks have a hole in them and some do not. Lances did not. The dowel hole on the adapter is suppose to be 180* away from the key way on the crank gear.
Our theory was that when the crank adapter was removed to time the motor it was put on incorrectly causing the flex plate to not be installed correctly.
So to test this theory I had to remove the crank adapter to see the end of the crank and see the crank gear key way. What I found could be our issue.
Here is a diagram that Morgan made to show the proper location of the crank adapter dowel and the crank gear key way. (note the location of the key way and the dowel hole, 180* apart)
now this is lances motor (note it is 180* off the correct location)
this is with the adapter installed to give you a better idea
Cutting-Edge Diesel
Active member
I have a junk crank im going to pull the adapter off to double check the correct location of the adapter dowel hole in relation to the crank gear keyway.
Wayne
Active member
You may already know this, but when you are reassembling it, you will need new tty bolts. They are the same as the harmonic balancer ones. (Can't order for that spacer plate because ford says to never remove it. If removed, discard entire crankshaft) I use blue loctite. Use same torque specs as harmonic balancer. Throw a dial indicator on, and make sure run-out is .003" or less. Gotta be super clean mounting surfaces. Good luck with the reassembly. I hope it cures your problem. Those flex plates have a lot of certrifugal weight at 4000 rpms 
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nice to have smart people around isnt it !
Cutting-Edge Diesel
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Yes sir! Lance was no help haha
PTSUPERD
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LOL !
PTSUPERD
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Yes. Update is V Ice still makes more power.
Breaking Habits
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We have updated ARP Crank adaptor bolts in stock, stronger than factory and wont twist.
My truck had a nasty vibration to it when my cam was off 1 tooth when we first put one in it back in 2010.
Jared
My truck had a nasty vibration to it when my cam was off 1 tooth when we first put one in it back in 2010.
Jared
BlueWaffle
New member
jared...i'll call you in a bit for the rma stuff so we can get that injector back to you guys.
PTSUPERD
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Dont be mad at me bruh. Just trying to lighten the mood in the room.
Hope yall get that **** lined out...
But neither owner will break 60mph in them. :toast:
JoeDaddy
New member
LOL LOL LOL
MorganY
New member
The adapter doesn't twist 120 degrees out of position. It can only be mounted in 6 different positions.
< 1 degree under large acceleration isn't going to cause a vibration like that.
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Cutting-Edge Diesel
Active member
pulled the adapter off of a junk crank I have here and its 180* off the key way. This one even has the hole in the crank to line up with the hole on the adapter. (unlike lance's) So that just confirms that lance's is 180* off
BlueWaffle
New member
Morgan you're so smart. You make me moist.
smokinstroker
New member
Just because I don't want to go back and read. This was running prior to purchase? Did you see it in person, video, 3rd party watch it run?
Not knocking anyone as I don't know where the motor came from. But something doesn't "unbolt and rotate" on it's own.
Hope this gets running soon for ya Lance.
Not knocking anyone as I don't know where the motor came from. But something doesn't "unbolt and rotate" on it's own.
Hope this gets running soon for ya Lance.
