ATI balancer alignment issues
ATI balancer alignment issues Alright, after countless searches that turned up everything except what Im looking for here it is. I am having issues with getting the ati blancer to go far enough down on the crank to make all 3 belts align properly. This is on an 05 model 6.0 LQ4 engine with a stock bottom end. The a/c, the serp, and the 8 rib blower belts are all off by about 1/4" or so. I have tried to loosen all the a/c bracket bolts and pull it towards the front in hopes of gaining some extra slack but no luck. The crank pulley needs to go on further. I have tried using the install tool and a 24" long 1/2" breaker bar with a flywheel holder tool on it but I still cant get it to go on far enough. It is almost like the balancer needs some material shaved off the back to allow it to go on further. Has this ever happened to anyone else? The initial install went smooth and the pulley bottomed out and felt just like it should. I have installed and removed ls style crank pulleys many times with no issues. Any ideas? 
is the balancer seated against the pump drive
Meas. the depth from the crank to the balancer, call ATI and see how much should be exposed
Could be you have the wrong balancer-there are a few, have to match the asses. drive
Meas. the depth from the crank to the balancer, call ATI and see how much should be exposed
Could be you have the wrong balancer-there are a few, have to match the asses. drive
If it isn't seated something is wrong and I cant imagine what it would be. It pressed on and the install went pretty smoothly until it stopped and I assumed it was bottomed out. I thought the balancer seated against the timing gear or sprocket whatever you wanna call it? Im using a melling high pressure pump but I was thinking it slid over the gear and didn't contact the balancer at all. If you are talking about the shoulder height inside the hub from the crank surface to the hub shoulder then its 0.246" measured with a micrometer. These are the two surfaces that the ati pinning kit would sit on and the drill bit cuts the hole in for the pin. Correct? Is there a ati part # on the balancer any where that I can look at to make sure I have the right part #?
Found the ati box and the part # on the box is 918853. Im gonna try to check and see if the assessory belt is aligned. Its gonna be kinda hard with the a/c compressor still attached to the car and the ps pump still attached to the kmember. I wonder if the a/c bracket bolt holes in the block could be drilled slightly off from the factory on the iron block? The procharger alignment is easily fixed as long as the rest of the belts are aligned.
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Found the ati box and the part # on the box is 918853. Im gonna try to check and see if the assessory belt is aligned. Its gonna be kinda hard with the a/c compressor still attached to the car and the ps pump still attached to the kmember. I wonder if the a/c bracket bolt holes in the block could be drilled slightly off from the factory on the iron block? The procharger alignment is easily fixed as long as the rest of the belts are aligned.
Hmmm havent heard this one before. No I didnt measure it as I just assumed that all ls cranks were the same diamiter. Guess I need to read up on them. Thanks.
Its a gen 3 engine supposedly out of an 07 silverado 2500 classic. It has the ls1 reluctor wheel on it, would that still possibly need a different balancer? It didnt have the balancer on it when I bought it so I have nothing to compare it to from a balancer spacing stand point. I just assumed it was the same. Would a block casting # help to identify it to make sure I was given the correct info on the engine?
On The Tree
Joined: Sep 2011
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From: fredericksburg va
so are you using the ft cam sensor in the cover ? I would call ATI but I think you are going to run into a mis match with that crank/cover and your accessories I'm assuming form a std F body LS1
It has a gen 3 cover on it and all gen 3 stuff from factory. It might have been an 06 model that he said, I cant exactly remember. Talked to Bob and ATI today and I need to remove the hub and make sure the part # is correct. ATI said it sounds like a truck hub may be on it. The vette is too short and the ls1 hub would line up correctly.
Rereading your posts, it looks like you have truck acces if they came with the engine, but I think the balancer is for an F body
I don't see that balancer in the cat., but its listed as LS1 F in my
price list
I have a stock 2004 truck balancer in the garage, I could take a meas,
like where it hits the cam gear to the front of it
I don't see that balancer in the cat., but its listed as LS1 F in my
price list
I have a stock 2004 truck balancer in the garage, I could take a meas,
like where it hits the cam gear to the front of it
Rereading your posts, it looks like you have truck acces if they came with the engine, but I think the balancer is for an F body
I don't see that balancer in the cat., but its listed as LS1 F in my
price list
I have a stock 2004 truck balancer in the garage, I could take a meas,
like where it hits the cam gear to the front of it
I don't see that balancer in the cat., but its listed as LS1 F in my
price list
I have a stock 2004 truck balancer in the garage, I could take a meas,
like where it hits the cam gear to the front of it
It went on about the same as the stocker did.. No marks were left on the crank or in the hub. I also removed the front cover and reinstalled it to verify it was seated against the timing gear. The hub is aligned properly because the accessory drive belt is aligned as far as I can tell.
