| [ Total Views: 855 | Total Replies: 15 | Thread Id: 100509 ] |
|
|
 Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 17th, 2013 at 02:02 PM |
|
|
Kombi box ratio's
Currently running a 1600 3 rib box in baja and would like to get a slightly taller top gear. At present it rev's at 3000rpm at 100km's with the 33'
rear tyres but would ideally like 2800rpm @ 100. Really like the low 1st , 2nd gears for bush and beach but would love to knock it back a little @
100. Is the 5 rib box gears or diff interchangeable ? Any option other than a 1800 box swap ? Have access to a 5 rib box but needs work.
|
|
|
13bwagon
Officially Full-On Dubber
Posts: 316
Threads: 9
Registered: November 11th, 2006
Member Is Offline
Location: wallabadah
Theme: UltimaBB Pro Blue
|
| posted on January 17th, 2013 at 06:55 PM |
|
|
3000 is about stock for most aircooled engines and dropping it 200 wont make any difference and will also slow down your cooling fan with 33 i would
stay with your box
BUY A REAL BUG A PRE S BUG...
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 17th, 2013 at 07:24 PM |
|
|
| Quote: | Originally
posted by 13bwagon
3000 is about stock for most aircooled engines and dropping it 200 wont make any difference and will also slow down your cooling fan with 33 i would
stay with your box
|
Who said anything about aircooled ! Aircooled, WHY ? 200rpm will make a difference if you are driving TO the Cape or simpson desert.
|
|
|
h
A.k.a.: Towely BuMpEr KING! ILLegal ALIEN on a roadtrip
Scirocco Rare
fractals - an ever changing lifestyle
Posts: 7670
Threads: 375
Registered: February 3rd, 2005
Member Is Offline
Location: noosa hillbilly 'yee har'
Theme: XMBX Pro Green
Mood: A T3 is not a Kombi - stop waving at me
|
| posted on January 17th, 2013 at 07:29 PM |
|
|
throw in a taller top gear shane, if you are overall happy with it?
|
|
|
13bwagon
Officially Full-On Dubber
Posts: 316
Threads: 9
Registered: November 11th, 2006
Member Is Offline
Location: wallabadah
Theme: UltimaBB Pro Blue
|
| posted on January 17th, 2013 at 08:50 PM |
|
|
WHO said you didn't have an aircooled engine ?
yeah ok if drive a baja 30,000 k's a year it would make a big difference
BUY A REAL BUG A PRE S BUG...
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 17th, 2013 at 09:00 PM |
|
|
| Quote: | Originally
posted by h
throw in a taller top gear shane, if you are overall happy with it?
|
Paul if only it was that easy. I dont know anything about rebuilding g/box's and certainly dont have the tooling/jig to do it. If I
went that way you would certainly go the full reco. Not sure on $$ figure but $2000 I guess for a stock rebuild. Hoping for Subarugears to release a
entry level 5 speed for the ej22 boys and I would look at that option for sure.
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on January 18th, 2013 at 04:49 PM |
|
|
My maths say you should be right at about 2785-2813 now with a 33" tyre.(either 5.375 or 5.4286 diff)
If you have one of the less common "Alpine" 5.86 ratio diffs you will have about 3035rpm.
1800 bus has a taller diff, but lower 4th gear meaning rpm would be theoretically 2726rpm,
but lose your lower ratio crawl gears.
The suba gears are agreat box, but way too tall for 33" tyres.
Cheapest option would be a normal 1600 box, or rebuild with taller 0.77 albins 4th gear(if you find you have the 5.86 diff)
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
h
A.k.a.: Towely BuMpEr KING! ILLegal ALIEN on a roadtrip
Scirocco Rare
fractals - an ever changing lifestyle
Posts: 7670
Threads: 375
Registered: February 3rd, 2005
Member Is Offline
Location: noosa hillbilly 'yee har'
Theme: XMBX Pro Green
Mood: A T3 is not a Kombi - stop waving at me
|
| posted on January 18th, 2013 at 07:01 PM |
|
|
^ there you go shane 
|
|
|
11CAB
Compulsive Aussie Vee Dubber
If ya got it....Baja it
Posts: 4674
Threads: 321
Registered: August 30th, 2002
Member Is Offline
Location: Brisbane Northside
Theme: UltimaBB Pro Blue
Mood: Beach'n
|
| posted on January 18th, 2013 at 07:09 PM |
|
|
Try another Tacho to see what revs you are actually doing
65 Meyers Manx
68 Country Buggy (KO 367)
68 Country Buggy (KO 669)
68 Country Buggy (KO 789)
68 Country Buggy (KO 815)
68 Baja Bug
76 Baja Kombi Twincab
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 18th, 2013 at 11:39 PM |
|
|
| Quote: | Originally
posted by 11CAB
Try another Tacho to see what revs you are actually doing
|
I will check the actual tyre height first. Remember the 31's are not actually 31 inches high so math theory is not accurate. Will
the number on box confirm alpine box ? Box was out of first IRS camper (68) ? which if I can remember correctly still had the large 5 stud 205 pcd.
Was there such a thing ??
|
|
|
Subarugears
Officially Full-On Dubber
Posts: 236
Threads: 17
Registered: December 24th, 2011
Member Is Offline
Location: Sydney, Australia
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 19th, 2013 at 05:55 AM |
|
|
| Quote: | Originally
posted by dangerous
The suba gears are agreat box, but way too tall for 33" tyres.
|
Maybe not with our new 4.86 diff ratio.... :-)
The beach buggy guys reckon the 4.44 diff ratio is perfect for 31" tyres so I reckon 4.86 should be about perfect for 33"s.
Bone if you are after an entry level box for an EJ22 I might have something that fits the bill - just getting my hands on some 4 bolt EJ22 boxes now
to do a couple.
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 19th, 2013 at 05:56 AM |
|
|
| Quote: | Originally
posted by dangerous
My maths say you should be right at about 2785-2813 now with a 33" tyre.(either 5.375 or 5.4286 diff)
If you have one of the less common "Alpine" 5.86 ratio diffs you will have about 3035rpm.
1800 bus has a taller diff, but lower 4th gear meaning rpm would be theoretically 2726rpm,
but lose your lower ratio crawl gears.
The suba gears are agreat box, but way too tall for 33" tyres.
Cheapest option would be a normal 1600 box, or rebuild with taller 0.77 albins 4th gear(if you find you have the 5.86 diff)
|
Thanks Dave will have to try and find out what ratio 3 rib box is in it !
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 19th, 2013 at 09:53 AM |
|
|
| Quote: | Originally
posted by Subarugears
| Quote: | Originally
posted by dangerous
The suba gears are agreat box, but way too tall for 33" tyres.
|
Maybe not with our new 4.86 diff ratio.... :-)
The beach buggy guys reckon the 4.44 diff ratio is perfect for 31" tyres so I reckon 4.86 should be about perfect for 33"s.
Bone if you are after an entry level box for an EJ22 I might have something that fits the bill - just getting my hands on some 4 bolt EJ22 boxes now
to do a couple.
|
Sounds good !
Well as suspected the 33' tyre is not 33' but rather 32' tall with 18psi on a 8' wide rim.
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 21st, 2013 at 03:29 PM |
|
|
Checked again and 100km's is 3000-3050rpm with the actual 32' tyre height .
|
|
|
11CAB
Compulsive Aussie Vee Dubber
If ya got it....Baja it
Posts: 4674
Threads: 321
Registered: August 30th, 2002
Member Is Offline
Location: Brisbane Northside
Theme: UltimaBB Pro Blue
Mood: Beach'n
|
| posted on January 21st, 2013 at 05:16 PM |
|
|
Next question, have you GPS'd your speed? Your 100km/h on the speedo probably isn't 100km/h
65 Meyers Manx
68 Country Buggy (KO 367)
68 Country Buggy (KO 669)
68 Country Buggy (KO 789)
68 Country Buggy (KO 815)
68 Baja Bug
76 Baja Kombi Twincab
|
|
|
Bone
Officially Full-On Dubber
Posts: 299
Threads: 43
Registered: August 9th, 2009
Member Is Offline
Location: Cooroy
Theme: UltimaBB Pro Blue ( Default )
|
| posted on January 21st, 2013 at 06:06 PM |
|
|
Graham, Graham why do you continue to argue with me ! Yes mate that is the GPS speed. There's the figures, you do the math and tell me the ratio !
Ps.. highly recommend EJ22's..see you at dubs.
|
|
|
