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rear axle ratios

Posted by sailadams 
sailadams Avatar
Larry Adams
Atlanta, GA, USA   usa
1967 MG MGB GT "Jose The GT"
1969 MG MGB "Raggedy (Ann) Roadster"

Is there any source of gear sets to change the standard 11/43 (3.909:1) rear end to 14/43 or 13/43?



When you get to a fork in the road, take it.

rrmgb Avatar
robert schau
Reston, VA., USA   usa
1973 MG MGB
1973 MG MGB

try in the motorsport section.
RS

mowog1 Avatar
Rick Ingram
Saint Joseph, Illinois, USA   usa
1968 MG MGC "The Green C"
1969 MG MGC "Vicky"
1972 MG MGB "Mallard"
1974 MG MGB GT V8 Conversion "The V8"
1978 MG MGB "Maggie"

MGC



1968 MGC - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com


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Pieces of Eight! has provided gas-charged bonnet & bootlid strut kits for the MGB/MGC and hatch kits for the MGB/GT-MGC/GT since 1996. We have recently added MG Midget bonnet and bootlid kits to inventory. Contact Rick at: mowog1@aol.com
sailadams Avatar
Larry Adams
Atlanta, GA, USA   usa
1967 MG MGB GT "Jose The GT"
1969 MG MGB "Raggedy (Ann) Roadster"

mowog1 Wrote:
Quote: MGC

What I was afraid of, Rick.

Robert, Motorsport is looking for higher ratios, not lower.



When you get to a fork in the road, take it.

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99hjhm Avatar
James H
West Midlands, England, UK   gbr
1971 MG MGB
1971 MG MGB GT "DLP 692J"
1971 MG MGB GT "WEL 682J"
1975 MG MGB GT "LVT 844P"

It depend on what axle you have, front loader (banjo) or tube axle... 13/43(3.03:1) can be found in a MGC for the tube axle.... search the forum. 14/43(3.07:1) is a V8 ratio, avaliable in the UK for the tube axle.

mowog1 Avatar
Rick Ingram
Saint Joseph, Illinois, USA   usa
1968 MG MGC "The Green C"
1969 MG MGC "Vicky"
1972 MG MGB "Mallard"
1974 MG MGB GT V8 Conversion "The V8"
1978 MG MGB "Maggie"

MGC had 3.07; 3.7; and 3.301




1968 MGC - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com


Member Services:
Pieces of Eight! has provided gas-charged bonnet & bootlid strut kits for the MGB/MGC and hatch kits for the MGB/GT-MGC/GT since 1996. We have recently added MG Midget bonnet and bootlid kits to inventory. Contact Rick at: mowog1@aol.com
MT-B Avatar
Matt T
New York, USA   usa
1959 MG MGA "Delilah"
1959 Royal Enfield Indian
1961 Royal Enfield Interceptor
1972 Opel GT
1976 MG MGB "Ruby"

This is the only source I have heard of in a while.

http://mgv8.homestead.com/rearaxle.html

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sailadams Avatar
Larry Adams
Atlanta, GA, USA   usa
1967 MG MGB GT "Jose The GT"
1969 MG MGB "Raggedy (Ann) Roadster"

Thanks, guys. I've got tube axles. One wire wheel, one bolt-on. I wish I could get these gears for a little less than $650 + shipping from UK. Yow! (Do I at least get to subtract VAT?) But special thanks, Matt, for the source, I never found it. However, current income makes me think I'll be looking for a whole used MGC rear axle instead. Kind of hoping there was some differential underground parts railroad I could tap into. Jack's probably got 'em all stowed away up in Blowing Rock.



When you get to a fork in the road, take it.

MT-B Avatar
Matt T
New York, USA   usa
1959 MG MGA "Delilah"
1959 Royal Enfield Indian
1961 Royal Enfield Interceptor
1972 Opel GT
1976 MG MGB "Ruby"

Larry you might want to contact Glen Towery or TS Imported Automotive, they are both MGB V8 conversion outfits. The MGC rear ends used to be popular with V8 conversions but now it seems most people are going with shortened American axels, so those guys may have some old C axels that they are willing to make a deal on.
FYI You have probably heard the warnings to be careful if you plan to use a 3.3 or a 3.0 on a stock B, I’m not sure they have the power to pull those gears off the line.


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sailadams Avatar
Larry Adams
Atlanta, GA, USA   usa
1967 MG MGB GT "Jose The GT"
1969 MG MGB "Raggedy (Ann) Roadster"

MT-B Wrote:
Quote: FYI You have probably heard the warnings to be careful if you plan to use a 3.3 or a 3.0 on a stock B, I’m not sure they have the power to pull those gears off the line.

Point taken and agreed on. They're for V-6 conversions, though. A Ford 8" would give more options, but the bolt-on axle already has a Classic Conversions 4-link rear welded on, and boy is that sweet! (It's just that the combo of S-10 tranny and 3.9 rear-end runs out too fast.) The other rear axle I want to keep with splines for wires, so I was thinking, keep that MGB (or MGC) too for simplicity sake.

Still thinking... Open for suggestions... Offers... Speaking of which, thanks, Rick, just not sure yet.



When you get to a fork in the road, take it.

twentyover Avatar
Greg Fast
Burbs of Detroit MI, USA   usa

Well, I'll step in here and kind of disagree. I ran a close ratio (2.5:1 first gear) with a stock and lightly modified engines, and had not problem pulling off a stop. First gear with a 3.9 gave about 10:1 reduction; with a stock box, a 3.3 rear gear gives over 11:1 reduction, and 4th would emulate the overdrive ratio.

In a perfect world, limited to a 4spd, I'd select the 3.3 MGC ratio and the intermediate (3:1 first gear) MGC overdrive transmission ratios.



Edited for spelin'



Edited 1 time(s). Last edit at 2008-11-25 11:33 AM by twentyover.

BritishV8 Avatar
Curtis Jacobson
Longmont CO, USA   usa

John Targett has new matched sets (crown wheel and pinion) at 3.07, 3.7, and 3.9:



Please tell him I sent you.



Edited 1 time(s). Last edit at 2008-11-25 11:15 AM by BritishV8.

mowog1 Avatar
Rick Ingram
Saint Joseph, Illinois, USA   usa
1968 MG MGC "The Green C"
1969 MG MGC "Vicky"
1972 MG MGB "Mallard"
1974 MG MGB GT V8 Conversion "The V8"
1978 MG MGB "Maggie"

BritishV8 Wrote:
Quote: John Targett has new matched sets (crown wheel and pinion) at 3.07, 3.7, and 3.9:
Please tell him I sent you.
Edited 1 times. Last edit at 11/25/08 11:15AM by BritishV8.

Too bad he doesn't offer the 3.307.

Does he have a website, or just e-mail/phone?



1968 MGC - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com


Member Services:
Pieces of Eight! has provided gas-charged bonnet & bootlid strut kits for the MGB/MGC and hatch kits for the MGB/GT-MGC/GT since 1996. We have recently added MG Midget bonnet and bootlid kits to inventory. Contact Rick at: mowog1@aol.com
Bill Young Avatar
Kansas City, MO, USA   usa
1952 MG TD
1959 MG MGA 1500
1973 Lotus Europa
1973 MG Midget "Half Asp Or Frank"
1998 Jaguar XK8 Convertible

I think this company in England has about all the ratios that are available for either type axle. http://www.autogear.co.uk/product/?groupid=5&model=&manufacturer=5




Bill Young
'73 Midget
'59 MGA

There is a fine line between a 'hobby' and 'mental illness'.

BritishV8 Avatar
Curtis Jacobson
Longmont CO, USA   usa

Rick asked: "Does he have a website, or just e-mail/phone?"

John Targett DOES have a website, but it doesn't have his whole catalog or price-list on it. Just his wheels, actually: http://www.minilitewheels.us/

Websites are a pain for many small businesses to maintain. When you talk to John, you might mention how cool it would be if he had a "mini-website" or linked pdf orderform like the ones Pieces-of-Eight, Mantell Motorsport, and others have on the BritishV8 server! (Cheap, easy, and effective!) I'll see John this weekend at Summit Point ("Turkey Bowl" vintage races) and I'll probably suggest the same thing.

Incidentally, U.S./U.K. exchange rates have changed dramatically so these gear sets are probably finally getting more cost-effective.

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