what puller do i need for a crank hub on
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 5,761
Likes: 47
From: munising MI USA
what puller do i need for a crank hub on
my 92 lt1. It apparently needs to screw into the existing threaded hole in the hub. Any options other then the 250 dollar set that's sold on ebay?
Racer
Joined: Dec 2007
Posts: 416
Likes: 3
That puller will work but you need to use 5/16 bolts with nuts because that puller is just a bit too small in diameter.
You also need to take the bolt out of the center holding the hub on and put a smaller diameter bolt in there thats approx 1" longer than the bolt you took out.
The hub has a 7/16 to 1/2" hole in the middle, it's not open the size of the crank snout, thats the reason for all this.
When you put it back on you need either 7/16 fine allthread rod 6", or a bolt approx a few inches longer than the one that holds the hub on.
Sorry, don't have any specifics, I had all the bolts in my parts drawers so I didn't measure anything.
You also need to take the bolt out of the center holding the hub on and put a smaller diameter bolt in there thats approx 1" longer than the bolt you took out.
The hub has a 7/16 to 1/2" hole in the middle, it's not open the size of the crank snout, thats the reason for all this.
When you put it back on you need either 7/16 fine allthread rod 6", or a bolt approx a few inches longer than the one that holds the hub on.
Sorry, don't have any specifics, I had all the bolts in my parts drawers so I didn't measure anything.
Drifting
Joined: Mar 2012
Posts: 1,492
Likes: 61
From: New Jersey
The center hub bolt is 5/8 and it slides through the hub and tightens into the crank to hold the hub on. Its been awhile but I believed I removed it and got a longer bolt at HD, Lowes or a hardware store to bottom the remover against. You'll also need three small diameter bolts nuts for the balance ears for the remover to attach to.
I used a remover like this -
I used a remover like this -
Racer
Joined: Dec 2007
Posts: 416
Likes: 3
The center hub bolt is 5/8 and it slides through the hub and tightens into the crank to hold the hub on. Its been awhile but I believed I removed it and got a longer bolt at HD, Lowes or a hardware store to bottom the remover against. You'll also need three small diameter bolts nuts for the balance ears for the remover to attach to.
url]
url]
The bolt size is 7/16"
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
specifically, it's 7/16ths fine thread.
unscrew the existing 7/16ths center bolt and screw in a longer 7/16th fine thread bolt; NOW set up your $20 generic puller, with the end of the puller screw bearing against the head of the aforementioned 7/16ths cap screw. The hub will move out ward till it contacts the underside of the head of the cap screw; disassemble, replace cap screw with a longer cap screw, repeat. After a couple of evolutions with ever longer cap screws, the hub will pop off.
A caveat: the hub comes off easily, if it doesn't, something is wrong, and trying to force matters with cheater bars, big hammers, etc. will only damage the hub and or crank snout.
unscrew the existing 7/16ths center bolt and screw in a longer 7/16th fine thread bolt; NOW set up your $20 generic puller, with the end of the puller screw bearing against the head of the aforementioned 7/16ths cap screw. The hub will move out ward till it contacts the underside of the head of the cap screw; disassemble, replace cap screw with a longer cap screw, repeat. After a couple of evolutions with ever longer cap screws, the hub will pop off.
A caveat: the hub comes off easily, if it doesn't, something is wrong, and trying to force matters with cheater bars, big hammers, etc. will only damage the hub and or crank snout.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 5,761
Likes: 47
From: munising MI USA
I ordered one of these http://www.jegs.com/i/JEGS-Performan...89711/10002/-1 Its says its compatible with lt1 and l98 motors. I hope I didn't screw anything up. I had a standard puller on it thinking the shaft went all the way through and when it wouldn't come I put heat to it and a pipe on the breaker bar with lots of reef!! The picture of it in the service manual is so small I couldn't tell how it worked. Oh well this isn't the first bone headed moment of my life and wont be the last.
Racer
Joined: Dec 2007
Posts: 416
Likes: 3
You better contact Jegs because in that link above they say what size all the bolts are and it's ALL WRONG, they say 5/16" instead of 5/16ths!!!!!!!!
In fact just about everyone forgets the "ths" you've got your work cut out for you.
In fact just about everyone forgets the "ths" you've got your work cut out for you.
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
Melting Slicks
Joined: Feb 2003
Posts: 2,688
Likes: 815
From: Saskatoon Sask.
Pretty sure he was trying to emphasize the "fine thread" part which you had not mentioned. Had nothing to do with "ths".
Team Owner
Joined: Sep 2003
Posts: 25,413
Likes: 2,745
I gave up long ago mentioning USS or SAE because no one actually understood after the Metric "mix" the various Metric fine/coarse differences or the differences in the Metric hex specifications so I just mention the thread pitch. If someone doesn't get that then that's their problem.
7/16-20 and then it's up to the "USER".
Hex Metric hardware in the big box stores is another interesting experience usually.
7/16-20 and then it's up to the "USER".
Hex Metric hardware in the big box stores is another interesting experience usually.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
I ordered one of these http://www.jegs.com/i/JEGS-Performan...89711/10002/-1 Its says its compatible with lt1 and l98 motors. I hope I didn't screw anything up. I had a standard puller on it thinking the shaft went all the way through and when it wouldn't come I put heat to it and a pipe on the breaker bar with lots of reef!! The picture of it in the service manual is so small I couldn't tell how it worked. Oh well this isn't the first bone headed moment of my life and wont be the last.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Did u get it out yet? Man that Jegs puller must have something that will work - its got something for every car on the planet. Well if u didnt get it out yet FYI i used my craftsman 3 prong puller: http://www.craftsman.com/shc/s/p_101...id=00946906000.
It needs something to push on in the center so i found a long used bolt from my used bolt bucket and took the stock center bolt out then install the longer bolt in partway. Did the job.
Ya know there is some dedicated hub puller and installer for the LT1 but its like $200 or more. Here it is a Kent-Moore:http://www.toolsource.com/crankshaft...-p-111789.html. Only 433 bucks.
Hope this helps if not to late.
It needs something to push on in the center so i found a long used bolt from my used bolt bucket and took the stock center bolt out then install the longer bolt in partway. Did the job.
Ya know there is some dedicated hub puller and installer for the LT1 but its like $200 or more. Here it is a Kent-Moore:http://www.toolsource.com/crankshaft...-p-111789.html. Only 433 bucks.
Hope this helps if not to late.
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 5,761
Likes: 47
From: munising MI USA
pullers here but I haven't got back to working on it yet
Did u get it out yet? Man that Jegs puller must have something that will work - its got something for every car on the planet. Well if u didnt get it out yet FYI i used my craftsman 3 prong puller: http://www.craftsman.com/shc/s/p_101...id=00946906000.
It needs something to push on in the center so i found a long used bolt from my used bolt bucket and took the stock center bolt out then install the longer bolt in partway. Did the job.
Ya know there is some dedicated hub puller and installer for the LT1 but its like $200 or more. Here it is a Kent-Moore:http://www.toolsource.com/crankshaft...-p-111789.html. Only 433 bucks.
Hope this helps if not to late.
It needs something to push on in the center so i found a long used bolt from my used bolt bucket and took the stock center bolt out then install the longer bolt in partway. Did the job.
Ya know there is some dedicated hub puller and installer for the LT1 but its like $200 or more. Here it is a Kent-Moore:http://www.toolsource.com/crankshaft...-p-111789.html. Only 433 bucks.
Hope this helps if not to late.
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 5,761
Likes: 47
From: munising MI USA
got it off but needed to alter the puller. the slots for the 3 bolts that bolt to the hub were to small so had to be hogged out to take 3/8s bolts. I could have used 5/16s and put nuts behind the holes in the hub but I figured this way if I ever needed 3/8s again it was opened up.