Topic: 40 spline Birfs

[surfindave]

Hey guys i was readin a topic on pirate and Chis geiger said they are waiting on some 40 spline birfs from newfields ?
Have you guys herd anythin about these?
Dave

[HFCRAOffroading]

40 spline?  In the birf joint only?  Would have to be, I don't know of a hub that will take a 40 spline unless Marlin makes a 40 spline flange.

[CTENG in KS]

Haven't we already reached the point where the 30 spline birf is killing hubs and ring gear?  What is the 40 spline gonna do other than be more expensive?  And if these get too much more expensive, and you wanna run big meats, then isn't it more cost effective to just go D60 to start?  I am all about beefing my toy axle for 37-38 inch tires just because of the weight savings, but if I am going 40's or bigger, I'll be hookin up a 60 or truhi9 under my rig.

[MiniSimp]

 

[CTENG in KS]

   to you too!   

[surfindave [OP]]

Yer its just what i saw but the 30 spline will do for me as i only run the 35s maybe go 36 at the most
Just was curious as to how they would fit?
Anyone got pics for an exo cage on a 2nd Gen 4runner getin a bit too much panel damage ?
Thanks Dave

[MiniSimp]

  to you too!   

Just wondering what the point would be...r&p are breaking now with 30's...

[CTENG in KS]

 

surfindave...thats an easy one, search marlin and the pirate toyota board for exo*
You will get responses up the wazoo.

[Marketing]

CV unlimited is working on a new design that is expected to be similar to the 30 spline joints Bobby sells. If testing goes well we plan to carry these axles and joints. We do not have prices or timeline on this.

[mr4x42u]

Haven't we already reached the point where the 30 spline birf is killing hubs and ring gear?  What is the 40 spline gonna do other than be more expensive?  And if these get too much more expensive, and you wanna run big meats, then isn't it more cost effective to just go D60 to start?  I am all about beefing my toy axle for 37-38 inch tires just because of the weight savings, but if I am going 40's or bigger, I'll be hookin up a 60 or truhi9 under my rig.

this was my point..what would be the point,,hubs a nd gears already are an issue with the 30 splines..40 is just overkill..

[RHG]

i was thinking about going w/the 30 longfields someday and I seen that they can also cryo your r/p gears. Whats next? I guess the next weak spot is hubs? Ight, then somebody needs to come up with some bulletproof hubs. Just playin...it'll never end. But for real has anyone run a r/p thats been cryoed? Lets hear some opinions and feed back.

[mr4x42u]

with the 30 splines,,,hub flanges,,4 dowl hub pins,,arp hub studs and a cryo ring and pinion your going to have a really stout front end,,and with a bigger ring and pin like 4.88 or higher it only gets stronger from there..on a light rig its going to be almost bullet proof..

[CTENG in KS]

I still see myself running the 27 splines...if they get to be too weak, then I will bump up to the 60...

[MiniSimp]

I still see myself running the 27 splines...if they get to be too weak, then I will bump up to the 60...

Chevy 60's & Hendrix Chassis will be the next step.

[CTENG in KS]

Chevy 60's & Hendrix Chassis will be the next step.

Don't make me come over there!
I would be interested in the F-toy chassis, that would reduce a lot of weight too, make those toy axles last longer, plus you could compete!

[MiniSimp]

Don't make me come over there!
I would be interested in the F-toy chassis, that would reduce a lot of weight too, make those toy axles last longer, plus you could compete!

You can only compete if you keep the Toy axles.
Here's the rules:

Engine

Toyota 20r, 21ru ,22r, 22re engines are allowed
Propane Allowed with 5 point penalty per event
EFI allowed with 5 point penalty per event
No penalty for rigs running carburetors
All Motors Must:
Must use factory head - for block
Must use stock type carburetor
Must use stock type intake manifold
Must use pump gasoline
Must be naturally aspirated
Radiator must mount in front of engine
Electric fans allowed
Engine can be moved back 0"- 8" from stock
Engine can be moved down 0"-1" from stock

Transmission /Transfer case

Any Toyota make or model manual or automatic transmission
Any Toyota gear driven mini truck case or combination of cases
Any manufactures gear set.
Any gear ratio
Dual case adapter adapter must be commercially available

Cage / Chassis / Body

Safety cage built by an approved vendor
Frame must be Toyota Pickup or 4Runner frame, 2wd or 4wd 

Steering

Any manual or power steering box.
Box must be attached to main frame rail
Drag link must attach to pitman arm on steering box
Ram assist steering is allowed
Any aftermarket high/cross over steer kit allowed. 
Steering must attach to stock steering arm location using the stock method

Front axle

Front axle must be from 1979 - 1985 Toyota Pickup or 4Runner
Aftermarket birfields allowed
Aftermarket inner axles allowed
Any Toyota 8" third member allowed (FJ80, V6 or 4cyl)
Any factory or aftermarket ring & pinion gear sets
Must use oem Toyota Pickup/4Runner knuckles
Differential shaving allowed
Trussing and diff armored allowed
Birfield eliminator kits not allowed

Rear axle

Rear axle must be from 1979 - 1995 Toyota Pickup or 4Runner
Any Toyota 8" third member allowed (FJ80, V6 or 4cyl)
Any factory or aftermarket ring & pinion gear sets
U-bolt flip allowed
Aftermarket axle shafts allowed
Differential shaving allowed
Trussing and diff armored allowed

Lockers

Any aftermarket locker
Open or welded differential allowed

Front suspension

Any conventional 1/2 elliptical leaf spring allowed
Attachment methods must be oem style, fixed at one end and a single shackle at the other end
Any aftermarket steel non take apart shock.
Shock must attach to axle in oem fashion
No traction bar or link type attachments
Springs must be mounted so they are stock width apart
U-bolt flip allowed

Rear Suspension

Any conventional 1/2 elliptical leaf spring allowed
Attachment methods must be oem style. fixed at one end and a single shackle at the other end
Aftermarket inner axles allowed
Frenched spring hangers allowed
Inboarding of springs allowed
Springs must be mounded no closer together than front stock spring width
Single traction bar allowed
U-bolt flip allowed

Brakes

Any year Toyota front disc
Any year Toyota rear drum
No cutting or turning brakes
Functional parking brake or micro lock

Battery

Any spill proof style battery
Battery must be securely mounted, no bungee cords

Tires

Any tire
Any wheel
Internal or external beadlocked wheels permitted

Fuel system

Stock tank or fuel cell
Fuel system must either be closed loop system or spill proof roll over valve. 
Vehicles that leak fuel will not be allowed to continue with competition until the issue is fixed.

Safety

D.O.T. approved helmet
Four point seat harness
Window net
Metal roof must cover entire roof opening
Solid metal roof can be bolt on at least every 12" inches
Expanded metal roof must be welded at each contact point
First aid kit
Fire extinguisher

[CTENG in KS]

My runner would qualify, I'd just be taking penalties for 22re.  I think this may be my route if I kill the bady too bad. 

[Makman]

this was my point..what would be the point,,hubs a nd gears already are an issue with the 30 splines..40 is just overkill..

Do we actually know how much larger these 40-spline shafts would be?  Spline count does not = diameter without more details.  Splines typically have a module classification (module = # teeth/pitch diameter in mm), per DIN 5480, but I think ANSI and the Japanese are all similar.

Basically, a 30- and 40-tooth spline can be directly compared if they have the same module.  More teeth equals larger diameter.  My guess is that a 40-spline is going to be a little bigger but really gains it's advantage with more numerous and smaller teeth effectively making the minor diameter of the spline larger.  Coul dbe good marketing or like stated above, overkill given the drivetrain it's designed for.  I want to see one either way.     

[6.72:1]

i was thinking about going w/the 30 longfields someday and I seen that they can also cryo your r/p gears. Whats next? I guess the next weak spot is hubs? Ight, then somebody needs to come up with some bulletproof hubs. Just playin...it'll never end. But for real has anyone run a r/p thats been cryoed? Lets hear some opinions and feed back.

I have cryogenically treated ring and pinion both front and rear and they are glorious!