HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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I need some help with the pilot bearing

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I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 12:29 pm

Not so much help as hand holding. I don't need to remove the LS1 pilot bearing, do I? It sits behind the adapter for the 944/LS1 bearing so it doesn't look to be in the way. They are in the freezer now getting ready to be installed. Thanks
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Re: I need some help with the pilot bearing

Post  cfgioja on Tue Jun 29, 2010 12:38 pm

I removed mine just to be sure on my ls1, but I dont know the true answer
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 12:44 pm

Thanks, for the quick reply. It sounds like a PITA to take out. I am trying to conserve energy. Anyone know for sure if it needs to be removed?
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Re: I need some help with the pilot bearing

Post  spence on Tue Jun 29, 2010 1:25 pm

I hope the answer is no... I didn't remove mine
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 5:07 pm

Anybody have a definitive answer? Thanks, for the previous replies.
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Best one I've ever used

Post  xschop on Tue Jun 29, 2010 5:43 pm

[You must be registered and logged in to see this link.]
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 5:57 pm

Thanks for the link. So, does that mean I have to take it out?
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Re: I need some help with the pilot bearing

Post  xschop on Tue Jun 29, 2010 6:04 pm

If it interferes with the adapter seating, certainly. What is the crank depth left over for the adapter? the LS pilot adapter is 1.00" tall
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 6:12 pm

The hole for the adapter is about 11/16ths deep. The bearing sits in a deeper hole behind that. It doesn't look like it could interfere at all. Once the flywheel is on the adapter should be flush. Does that sound about right?
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Re: I need some help with the pilot bearing

Post  xschop on Tue Jun 29, 2010 6:24 pm

Just curious....Is the O.D. of the original bearing the same as the adapter O.D.? or is it stepped?

On my 5.3l crank end, the 1.0" tall LS pilot adapter fit snug seated and stuck out past the crank end. I actually used a 15x35x14 instead of a 15x35x11 pilot bearing to bring the pilot bearing right before (1/8") the TT shaft step....this is absolutely critical or you need to have a spare T-Tube on hand....

Look at 4th pic of the first post....

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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 6:33 pm

Yes the area the adapter sits in is stepped with the bearing deeper in it. The adapter would seat fully ahead of the bearing and stick out about 3-4/16ths.
It occurs to me that I may not know WTF I am talking about. Is the step I am looking at actually the face of the pilot bearing?
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Re: I need some help with the pilot bearing

Post  xschop on Tue Jun 29, 2010 6:41 pm

The step would be the O.D. of the original Pilot bearing (that would sit behind the LS-944 pilot adapter)

Calculate your TT shaft length from the TT flange....
then calc. your BH depth, BH adapter....
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Tue Jun 29, 2010 6:47 pm

Thanks, now I know what I will be doing this weekend. I was looking for that exact picture you linked to. I knew I had seen it somewhere.
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Re: I need some help with the pilot bearing

Post  xschop on Tue Jun 29, 2010 7:27 pm

No problem.... Where's that pic of the friction welded pilot bearing?
If you can install the 15x35x14, I would recommend it as it will last longer and protect the TT shaft much better as it has more radial load interface with the 15mm TT shaft O.D. Very Happy
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Re: I need some help with the pilot bearing

Post  cfgioja on Tue Jun 29, 2010 10:49 pm

if you are going to remove it go to Autozone, its the only place with the slide hammer with enough prongs to get mine out, I managed to remove mine in 5 mins once I got it.

They rented one out to me here in Oklahoma.
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Re: I need some help with the pilot bearing

Post  Porch on Wed Jun 30, 2010 9:49 am

+1 to cfgioja!
Go to Autozone, rent the slide hammer and pilot bearing adapter (two separate rentals). You'll have it out in 2 minutes, guaranteed!
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Wed Jun 30, 2010 12:17 pm

I will do that this weekend. I think they call it a blind hole bearing puller. Thanks for everyone's help.
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Wed Jun 30, 2010 7:33 pm

[You must be registered and logged in to see this image.]
This is what I am looking at. The pilot bearing is deep inset. The first step is for the LS6 bearing below.
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The adapter will sit where the LS6 bearing would be. So, for a LS1 it doesn't look like removal of the pilot bearing is going to get the adapter any deeper since it is going to seat in front of the bearing.
This is what it looks like with both bearings removed.
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Re: I need some help with the pilot bearing

Post  xschop on Thu Jul 01, 2010 8:14 am

Ahhh, O.k. Glad you took pics. The Truck crank ends don't have that. I would gander that the reason your motor has that inner bearing is for the ability of a different transmission to mount up (auto and manual tranny shaft tips vary)

I wouldn't bother with it unless you are really picky about rotational weight Smile
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Re: I need some help with the pilot bearing

Post  spence on Thu Jul 01, 2010 9:35 am

The LT1 was like that too.... The adapter fit fine without having to remove the old bearing.
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Re: I need some help with the pilot bearing

Post  Arthropraxis on Thu Jul 01, 2010 9:53 am

If the tip of the torque tube doesn't stick past the bearing in the adapter then the LS1 bearing shouldn't need to come out. I will measure to be sure. That would be great to have one less thing to do. Thanks for everyone's input. Now onto fitting the motor.
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Re: I need some help with the pilot bearing

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