Tooth pattern check, Ford 8 inch. - Pirate4x4.Com : 4x4 and Off-Road Forum

Flybyford · 03-26-2010, 08:27 PM

USED 3.80 gear set, 0.009" BL, 0.026" Pinion shim thickness, Originally had an 0.018" pinion shim, but I am using a Currie pinion support. Honestly, out of my own lack of experience, when I first used the 0.018" shim I didn't make a readable pattern, dipshit...

I thought my pinion was too deep, so I went to 0.030" then to 0.026", not much difference.

Coast Side:

Drive Side:

Thanks for any help!

AddictedOffroad · 03-26-2010, 08:52 PM

Drive pattern tells me too deep. Go back to the stock pinion shim and get a good pattern on it. Use some gear oil with the marking compound as well to thin it slightly and you will get a more definite pattern.

FWIW, I tend to lean more towards the coast pattern than the drive with used gears. Both tell me too deep on that setup though.

-Nathan- · 03-26-2010, 08:58 PM

i concur, with used gears focus on the coast side. Also, doesn tlook like youre getting a proper pattern reading...are you applying load to the carrier when you check your pattern? a big mistake people make is to just run teh gear set through the pinion with no load...this leads to an incorrect pattern. Check the DIY on bellavista here in teh tech section, it will give you more of an idea.

Flybyford · 03-28-2010, 06:35 PM

Cool...

I searched, found some info on focusing on the coast for used set, also found a tip on loading the gear to get a readable pattern!

Appreciate the help!

Bray D · 03-28-2010, 07:26 PM

I've found I get a good(readable) pattern by turning the ring gear by a ring gear bolt.

Do as these guys have said, and check back when you're gettin close.

03-26-2010, 08:27 PM	#1 (permalink)
Flybyford Registered User Join Date: May 2009 Member # 136390 Posts: 5	Tooth pattern check, Ford 8 inch. USED 3.80 gear set, 0.009" BL, 0.026" Pinion shim thickness, Originally had an 0.018" pinion shim, but I am using a Currie pinion support. Honestly, out of my own lack of experience, when I first used the 0.018" shim I didn't make a readable pattern, dipshit... I thought my pinion was too deep, so I went to 0.030" then to 0.026", not much difference. Coast Side: Drive Side: Thanks for any help!

03-26-2010, 08:52 PM	#2 (permalink)
AddictedOffroad Pirate4x4 Addict! Join Date: Sep 2006 Member # 79221 Location: Windsor, CO Posts: 7,442 Blog Entries: 1	Drive pattern tells me too deep. Go back to the stock pinion shim and get a good pattern on it. Use some gear oil with the marking compound as well to thin it slightly and you will get a more definite pattern. FWIW, I tend to lean more towards the coast pattern than the drive with used gears. Both tell me too deep on that setup though. __________________ Scotty http://www.AddictedOffroad.com/ 970-420-4198 Toyota Winch bumpers on SALE! 10% OFF ALL TRAIL-GEAR PARTS! Project "Always Smooth" Toyota based U4 buggy

03-28-2010, 07:26 PM	#5 (permalink)
Bray D Registered User Join Date: Sep 2007 Member # 100050 Location: Manito, IL Posts: 826	I've found I get a good(readable) pattern by turning the ring gear by a ring gear bolt. Do as these guys have said, and check back when you're gettin close. __________________ 96 Ranger-2012 4WOR Ultimate Adventure Invited Reader

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03-26-2010, 08:58 PM	#3 (permalink)
-Nathan- Registered User Join Date: Dec 2009 Member # 147542 Location: Saskatoon, SK Posts: 35	i concur, with used gears focus on the coast side. Also, doesn tlook like youre getting a proper pattern reading...are you applying load to the carrier when you check your pattern? a big mistake people make is to just run teh gear set through the pinion with no load...this leads to an incorrect pattern. Check the DIY on bellavista here in teh tech section, it will give you more of an idea.

03-28-2010, 06:35 PM	#4 (permalink)
Flybyford Registered User Join Date: May 2009 Member # 136390 Posts: 5	Cool... I searched, found some info on focusing on the coast for used set, also found a tip on loading the gear to get a readable pattern! Appreciate the help!