The New "What did you do with your Z today" (with off topic replies) XXXII

bunk · 04-14-2019, 03:14 PM

Now its not backing out either..lol

Rusty · 04-14-2019, 03:16 PM

Quote:

Originally Posted by bunk

Now its not backing out either..lol

That burr will not let it reverse directions. Going backward will make the burr bigger.

bunk · 04-14-2019, 03:23 PM

Quote:

Originally Posted by Rusty

That burr will not let it reverse directions. Going backward will make the burr bigger.

Ah. Gotcha. Point of no return then. BFH and a 10-12" bolt or cut some all thread to length.

Rusty · 04-14-2019, 03:47 PM

I know all about burrs. I have ruined a few things over the years. Like a $80,000 coupling for a shaft.

Coupling was a interference fit. Meaning the bore of the coupling was smaller then the diameter of the shaft it was going on. Shaft diameter 12.000". Bore diameter 11.980", 0.020" smaller. Have to heat the coupling up to expand the bore diameter. Heat it 600F to grow the bore to 12.010". Start to slide the coupling over the shaft. Coupling started to cool off. Picked up a burr about 90% of the way on. Stop the coupling dead in it's tracks. Hurried up and threw more heat to the coupling with 3 rose bud torches. Stuck! End up machining off the coupling and ordering a new coupling.

What saved my bacon on that job. I had the foreman right there with me, giving me a hand.

What makes the diff bushing install hard is that it just like the above, but without the heat. And the sub-frame hole is not perfectly round either. It's somewhat egg shaped from the welding on the sub-frame.

jchammond · 04-14-2019, 05:31 PM

Quote:

Originally Posted by bunk

Now its not backing out either..lol

Keep going; while pulling in with the bolt, occasionally smack the bushing side with a 5# hammer

bunk · 04-14-2019, 05:49 PM

Quote:

Originally Posted by jchammond

Keep going; while pulling in with the bolt, occasionally smack the bushing side with a 5# hammer

I'm gonna keep chugging at forcing that B in. just picked up an entry level BFH, 32oz. If that doesnt work, I'll rent a 3# sliding hammer from autozone, if that shaft is 1/2", otherwise I'll have to find thor's hammer

eastwest2300 · 04-14-2019, 06:10 PM

Quote:

Originally Posted by bunk

I'm gonna keep chugging at forcing that B in. just picked up an entry level BFH, 32oz. If that doesnt work, I'll rent a 3# sliding hammer from autozone, if that shaft is 1/2", otherwise I'll have to find thor's hammer

jchammond · 04-14-2019, 06:21 PM

Quote:

Originally Posted by bunk

I'm gonna keep chugging at forcing that B in. just picked up an entry level BFH, 32oz. If that doesnt work, I'll rent a 3# sliding hammer from autozone, if that shaft is 1/2", otherwise I'll have to find thor's hammer

Thought that hole was a tad larger? 9/16” or maybe 5/8”

bunk · 04-14-2019, 06:43 PM

Quote:

Originally Posted by jchammond

Thought that hole was a tad larger? 9/16” or maybe 5/8”

1/2" bolt and I'm wiggling it to get it though... we're making this too easy for zingston..lol

jchammond · 04-14-2019, 06:29 PM

Measure that hole Bunk

You could potentially get a larger threaded rod & nut to work with

Rusty · 04-14-2019, 06:29 PM

Quote:

Originally Posted by jchammond

Measure that hole Bunk

You could potentially get a larger threaded rod & nut to work with

13mm is the biggest you can go.

jchammond · 04-14-2019, 06:36 PM

Quote:

Originally Posted by Rusty

13mm is the biggest you can go.

The base of the stud in back of diff is just over 14mm...so hole would have to be larger; unless it is tapered on front side...can’t remember

jchammond · 04-14-2019, 06:41 PM

Quote:

Originally Posted by jchammond

The base of the stud in back of diff is just over 14mm...so hole would have to be larger; unless it is tapered on front side...can’t remember

0.569” diameter

jchammond · 04-14-2019, 06:42 PM

Quote:

Originally Posted by jchammond

0.569” diameter

9/16” ... I’m pretty sure that’s what Madwi & myself ended up using
That translates to 0.5625

Rusty · 04-14-2019, 07:09 PM

Quote:

Originally Posted by jchammond

The base of the stud in back of diff is just over 14mm...so hole would have to be larger; unless it is tapered on front side...can’t remember

The stud has a taper that fits into the taper in the bushing. Anything larger then 13mm. The threads with chew on the bore

04-14-2019, 03:14 PM	#1 (permalink)
bunk A True Z Fanatic Join Date: Mar 2018 Location: Southern California Posts: 4,077 Drives: 2010 370z Roadster Rep Power: 2684370	Now its not backing out either..lol __________________ -Drop in K&N Filter -Invidia Gemini CBE -Z1 Oil Cooler -Swift Springs - EcuTek -Forgestar F14 -SPL Camber Links -Akebono BBK Upgrade -Z1 Premium SS Lines -SPL Diff Bushings -SPL FUCAs - BellRaceworks Diff Brace

04-14-2019, 03:47 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,516 Drives: 2011 Nismo GM 6M Rep Power: 2684439	I know all about burrs. I have ruined a few things over the years. Like a $80,000 coupling for a shaft. Coupling was a interference fit. Meaning the bore of the coupling was smaller then the diameter of the shaft it was going on. Shaft diameter 12.000". Bore diameter 11.980", 0.020" smaller. Have to heat the coupling up to expand the bore diameter. Heat it 600F to grow the bore to 12.010". Start to slide the coupling over the shaft. Coupling started to cool off. Picked up a burr about 90% of the way on. Stop the coupling dead in it's tracks. Hurried up and threw more heat to the coupling with 3 rose bud torches. Stuck! End up machining off the coupling and ordering a new coupling. What saved my bacon on that job. I had the foreman right there with me, giving me a hand. What makes the diff bushing install hard is that it just like the above, but without the heat. And the sub-frame hole is not perfectly round either. It's somewhat egg shaped from the welding on the sub-frame. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

04-14-2019, 06:29 PM	#10 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Measure that hole Bunk You could potentially get a larger threaded rod & nut to work with __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

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