Author Topic: 27 0r 30 spline (Read 4597 times)

surfindave · « **on:** Jul 11, 2005, 04:30:08 AM »

Guys looking at buying some new birfs.
Was looking at the longfield 27 spline or the 30 spline sets.
Is there much diff between the 2 i read the 30 spline uses the c clip and no need for martac is the 27s the same?
Also what part of the US is WA ?washington?
I may need to call and order a set im from Australia
I have dual cases with 4:1 rear and 2.28 front just exploded me first birf and dont wanna do it again lolol.
thanks
Dave

CTENG in KS · « **Reply #1 on:** Jul 11, 2005, 05:09:23 AM »

What size tires are you running with what axle gearing? I like the 27 spline if you are running 35-38 inch tires...this way you can carry your old birfs as spares. With bigger tires than that though, you might want to go full out with the 30 splines. I believe that all of the superlongfield kits (27 and 30) do not need the martack...I think there is a bulge machined into the shaft to serve the same purpose?

surfindave · « **Reply #2 on:** Jul 11, 2005, 06:35:34 PM »

Cteng
Im running 35s JT2s like a swamper pretty eggresive
Gears are 5.7 but now i have the crawlers i wil be dropping down to 5.29s when the go.
But they seem to be holding up pretty well so far when i order from bobby ill prob get the cryod front ring .Also its a auto an a 2.4 turbo diesel motor not much power but good enuff .
Cheers Dave

CTENG in KS · « **Reply #3 on:** Jul 11, 2005, 10:29:22 PM »

Are you still running the stock birfs?

mr4x42u · « **Reply #4 on:** Jul 12, 2005, 02:50:35 AM »

30 spline...and you can still use your stock birfs and axles if need be..just swap it all as a whole and its a done deal..with the 30 splines though your stock birfs and axles will get loaned out more then you will EVER use them..

surfindave · « **Reply #5 on:** Jul 12, 2005, 06:52:03 PM »

The Birfs i have are hardend or at least they where

I think i may get the 30 spliners and be done with it.

Has anyone had problems breaking there free wheelin hubs with the new longs?
Now with the 30 spliners what will happen next me gears may go bang ? or will i blow the detroit no spin locker out? any experiences?
Thanks again guys
Dave

coolcruiserfj40 · « **Reply #6 on:** Jul 12, 2005, 09:56:27 PM »

proubly bust a pinion

mr4x42u · « **Reply #7 on:** Jul 12, 2005, 10:52:22 PM »

Quote from: surfindave on Jul 12, 2005, 06:52:03 PM

The Birfs i have are hardend or at least they where
I think i may get the 30 spliners and be done with it.
Has anyone had problems breaking there free wheelin hubs with the new longs?
Now with the 30 spliners what will happen next me gears may go bang ? or will i blow the detroit no spin locker out? any experiences?
Thanks again guys
Dave

all of the above

but you not running a 60 so you have to expect to bust

from time to time..But there are more ways to add strength,,drive flanges,,cryo ring and pinion,,cryo hub gears..The detroit will prolly hold up better now with the 30 splines over anything..Detroits usally bust from the shock of broken axles,,I doubt you will bust a 30 splins so not that it won't happen,,but less likey then with a axle that could bust or will bust..

HFCRAOffroading · « **Reply #8 on:** Jul 13, 2005, 03:50:13 PM »

According to Bobby, the hub is now the "fuse"

http://www.pirate4x4.com/forum/showthread.php?t=372780

IMHO, I would rather change a hub than a birf. That is why I went with his Cromo R/P 5.29's and his Super Axles. Sure it's more money, short term, less down time if I bust a hub on the Trail, long term.

surfindave · « **Reply #9 on:** Jul 13, 2005, 06:57:48 PM »

Thanks guys.
Does Bobby actually sell cryod 5.29s ? or do ya send them too him to be done?
I would go for the crod front and leave the rear as its a daily driver.

coolcruiserfj40 · « **Reply #10 on:** Jul 13, 2005, 07:12:49 PM »

you send him yours

HFCRAOffroading · « **Reply #11 on:** Jul 13, 2005, 08:40:53 PM »

Bobby used to sell the cromo ring and pinion, he doesn't now. I am pretty sure he will cromo anything you send him.

http://www.longfieldsuperaxles.com/

mr4x42u · « **Reply #12 on:** Jul 13, 2005, 10:20:37 PM »

Quote from: HFCRAOffroading on Jul 13, 2005, 08:40:53 PM

Bobby used to sell the cromo ring and pinion, he doesn't now. I am pretty sure he will cromo anything you send him.

http://www.longfieldsuperaxles.com/

from what I understand its not that he don't sell them anymore,its that the 5.29's were on back order for a while..

HFCRAOffroading · « **Reply #13 on:** Jul 13, 2005, 10:31:42 PM »

Quote from: mr4x42u on Jul 13, 2005, 10:20:37 PM

from what I understand its not that he don't sell them anymore,its that the 5.29's were on back order for a while..

Either way, 40 bucks to get your ring and pinion heat treated and cryoed ain't a bad deal

mr4x42u · « **Reply #14 on:** Jul 13, 2005, 10:47:51 PM »

I fully agree..

surfindave · « **Reply #15 on:** Jul 16, 2005, 03:24:31 AM »

Ok guys ive decided to go for the longs 30 spliners.
1 more Q please.
I got a email about the poly performance axles being stronger than bobbys 4340 axles would this be correct?
If i went the 30 longs CVs then the poly shafts wont fit so id have to go 27 spline longs so what do i do?

Im getin confused
Just go the 30s ??
You guys know te stuff aint herd of poly axles here in aus HELP
Dave

HFCRAOffroading · « **Reply #16 on:** Jul 17, 2005, 12:06:51 AM »

http://www.longfieldsuperaxles.com/

On his website he tested his birfs against just about everything. It is on the right hand side of his website.

mr4x42u · « **Reply #17 on:** Jul 17, 2005, 10:46:40 PM »

Quote from: surfindave on Jul 16, 2005, 03:24:31 AM

Ok guys ive decided to go for the longs 30 spliners.
1 more Q please.
I got a email about the poly performance axles being stronger than bobbys 4340 axles would this be correct?
If i went the 30 longs CVs then the poly shafts wont fit so id have to go 27 spline longs so what do i do?
Im getin confused
Just go the 30s ??
You guys know te stuff aint herd of poly axles here in aus HELP
Dave

I don't know if poly performance even sells 30 spline axles,,and I doubt there 27 spline stuff is as strong as bobbys 30 spline,,,and if polly does sell the 30 spline axles,,I really doubt they could be all that stronger if any..Just get bobbys 30 spline axles and birfs and don';t worry about it..
Trust me,,you birf and axle prayes have been awnsered by the god of birfeilds,,bobbylong,,toyota axle saint..

surfindave · « **Reply #18 on:** Jul 18, 2005, 12:40:18 AM »

30 spliners from Bobby have been ordered

Hope to have them soon thanks again guys .

Yota4life · « **Reply #19 on:** Jul 18, 2005, 06:23:57 PM »

Im soon going to order 30's also. Figure ill ask a question also. If im running 30's and hydro assist and NO locker in the front would i still have a chance of busting a 5.29 r/p or a hub? Seems most the stress is because of the locker that forces them to bust.

CTENG in KS · « **Reply #20 on:** Jul 18, 2005, 07:42:19 PM »

Quote from: surfindave on Jul 16, 2005, 03:24:31 AM

Ok guys ive decided to go for the longs 30 spliners.
1 more Q please.
I got a email about the poly performance axles being stronger than bobbys 4340 axles would this be correct?
If i went the 30 longs CVs then the poly shafts wont fit so id have to go 27 spline longs so what do i do?
Im getin confused
Just go the 30s ??
You guys know te stuff aint herd of poly axles here in aus HELP
Dave

The inner shafts you are talking about are poly's super bling $550 just for the inners 300M axleshafts. That is bank baby, lotta money.

mr4x42u · « **Reply #21 on:** Jul 19, 2005, 02:42:54 AM »

Quote from: Yota4life on Jul 18, 2005, 06:23:57 PM

Im soon going to order 30's also. Figure ill ask a question also. If im running 30's and hydro assist and NO locker in the front would i still have a chance of busting a 5.29 r/p or a hub? Seems most the stress is because of the locker that forces them to bust.

it will prolly never brake unlocked..set up like that you can get yer throttle on

CTENG in KS · « **Reply #22 on:** Jul 19, 2005, 01:59:59 PM »

I just went back to the Pirate thread with the Longfield data, looks like the 30's hold up to nearly 9,000 lb-ft of torque. Significantly more than the 27 longs and newfiels which are holding up to about 7,000...

KWP · « **Reply #23 on:** Jul 19, 2005, 03:01:47 PM »

Anyone know how the bellfields compare to the longs? I just put a set in a little while ago, oh and sorry to threadjack.

Yota4life · « **Reply #24 on:** Jul 19, 2005, 05:35:58 PM »

Quote from: mr4x42u on Jul 19, 2005, 02:42:54 AM

it will prolly never brake unlocked..set up like that you can get yer throttle on

Thats what im talking about

surfindave [OP]

surfindave [OP]

surfindave [OP]

surfindave [OP]

surfindave [OP]

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