The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Work those trucks!




Share what you're up to this summer!

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
14 registered members (Gazz, 51sub, matthews940, Achipmunk, beltfed, drdoug), 296 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums47
Topics116,101
Posts923,138
Members42,336
Most Online940
Apr 5th, 2017
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Tapping Threads Into the Crank #1294216 Thu Jan 10 2019 04:55 AM
Joined: Sep 2011
Posts: 1,782
L
Lugnutz Offline OP
Shop Shark
I decided to press fit the HB on my freshly rebuilt 1963 230ci (as opposed to tapping it onto the crank snout.) I've tapped them on using heat and a hammer before, but thought it was time to try a press fit.
Every 230/250 I own has a blind crank snout (no threads or bolt).

I bought a kit from Jerry (Hot Rod Lincoln) that is designed to accurately tap threads into the crank snout so you can press fit the HB. I'm happy to report that it works great. I did two cranks tonight. First, I did a trial run on a 1972 250ci that has seen better days. That went smoothly. Next, the 1963 230ci. That went faster since I had already done one. Here is a step by step for those who like pictures. Jerry's kit is top notch. The kit is shown in the first picture. LINK HERE

Last edited by Lugnutz; Thu Jan 10 2019 01:34 PM.
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294232 Thu Jan 10 2019 01:48 PM
Joined: Aug 2001
Posts: 3,679
2-Ton Offline
Shop Shark
That does look like a slick setup!!

Don


Of all the things I've lost in my life, I miss my mind the most!

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
More pix on Photobucket
'46 2-Ton grain truck
'48 3/4-ton grain truck
'50 2-ton flatbed
'54 Pontiac Straight Eight
'70 American LaFrance pumper fire truck.
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294238 Thu Jan 10 2019 02:16 PM
Joined: Jan 2013
Posts: 1,381
S
sstock Offline
Shop Shark
Yeah, I'm on his list to get one of his kits, every detail right down to the bearing, I've seen guys snap off their 7/16" bolts not using a proper installer.


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, omaha orange, still 6 volt, RPO green glass, side carrier spare
https://www.youtube.com/watch?v=Bli...n05i04t1aokgm4p04jiwgffwhyyih5xbk0h00410
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294460 Fri Jan 11 2019 10:53 PM
Joined: Aug 2018
Posts: 159
D
drdoug Online
Shop Shark
Very nice looking kit. Thanks for the link to the photos.

Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294486 Sat Jan 12 2019 02:41 AM
Joined: Jun 2016
Posts: 228
4
42465967 Offline
DLBrooks
dang!

Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294651 Sun Jan 13 2019 01:47 AM
Joined: Jun 2011
Posts: 2,794
E
EdPruss Offline
Shop Shark
Great kit, notice the installing arbor threads into the crank with the 7/16-20 threads, the acme threads pull the balancer into place, the 7/16-20 threads are not designed for that load, make sure to use HRL's arbor for this.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1294653 Sun Jan 13 2019 02:12 AM
Joined: Jun 2016
Posts: 228
4
42465967 Offline
DLBrooks
Ed, ok but what would be the diff if I used a longer grade 8 7/16x20 bolt then push it on with a 7/16x20 nut suitable washer. I do agree that HRL has a good design and tool.

You're saying just do not pull it in with the crank threads, correct?

Last edited by 42465967; Sun Jan 13 2019 11:35 AM. Reason: words
Re: Tapping Threads Into the Crank [Re: 42465967] #1294684 Sun Jan 13 2019 05:44 AM
Joined: May 2015
Posts: 1,355
K
klhansen Offline
Shop Shark
Originally Posted by 42465967
Your saying just do not pull it in with the crank threads, correct?

Yes, they are not designed for a load like that. Static loading is OK, but when the bolt is heavily loaded and then turned, the crank threads will likely strip off or shear.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1295008 Wed Jan 16 2019 12:34 AM
Joined: Feb 2004
Posts: 18,997
H
Hotrod Lincoln Offline
Boltergeist
Since the hole in the front of the balancer is just over 3/4" in diameter, the 3/4" ACME thread just keeps the thrust centered a little better. A 3/4" V thread and a nut and flat washer, or even a piece of 7/16-20 all thread would do the same thing as long as the threads in the crank snout remain stationary- - - - -the ACME thread and the banded ball bearing just make it look a little less shade tree!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Tapping Threads Into the Crank [Re: Lugnutz] #1295258 Fri Jan 18 2019 04:33 AM
Joined: Nov 2001
Posts: 1,646
D
delux54panel Offline
Shop Shark
Beautiful setup! Is it for rent, or sale only? Also, can this job be done with the engine in the truck?
Thanx,
Marty

Re: Tapping Threads Into the Crank [Re: Lugnutz] #1295260 Fri Jan 18 2019 04:47 AM
Joined: Feb 2004
Posts: 18,997
H
Hotrod Lincoln Offline
Boltergeist
I tried renting kits for a while, but the logistics of getting a deposit, shipping back and forth, etc. just got too involved. A couple of kits disappeared, so I had to make the deposit big enough to make it worthwhile to remake the missing ones.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Page 1 of 2 1 2

Moderated by  48bigtrucks, MNSmith 

Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.3