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rear diff ratio?

Started by dsm2evo, Dec 08 2017 07:31 AM

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9 replies to this topic

#1
dsm2evo

Posted 08 December 2017 - 07:31 AM

Advanced Member

Active Members
157 posts

Locationcanada

Ok I have been looking for a straight answer to this for hours but everything I am finding people fight if its 3.545 or 3.909. So I will cut it to the chase,

my car is a EVO 1 GSR, my rear diff decided to pile up the other day and being in Canada parts are scarce. However if my diff is a 3.545 then its no big deal as a 2g manual dsm is also a 3.545 and there are tons of those here. I am aware that there are lots of threads stating its a 3.909 but there are just as many saying its a 3.545 so I am just trying to cover my bases before I go and buy a part that I can not use and may do more damage then there already is. Thanks for the help guys

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#2
DOUGMO

Posted 08 December 2017 - 10:52 AM

yoni lover

Active Members
8,885 posts

LocationMelbourne

evo is 3.9

GENUINE CE9A evo2 gsr track car
all fabrication BJP AUTOMOTIVE
winton 1:27.4 /// sandown 1:21.5 /// phillip island 1:49.2 /// haunted hills 59.1 /// eastern creek 1:35.4 /// winton short 1:01.4

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#3
BMGTZ

Posted 08 December 2017 - 12:58 PM

Grumpy old man from the school of hard knocks

Donating Members
4,554 posts

Locationsouthside of perth WA

as above....3.909

there is also a pate on the firewall that will tell you the ratio....if it hasnt been changed from manufacture

BRIAN
Black evo 1 full road rego and done properly/legally

I have heaps of parts...but never the one I need.

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#4
dsm2evo

Posted 08 December 2017 - 01:14 PM

Advanced Member

Active Members
157 posts

Locationcanada

Ok thanks guys guess I need to keep my eyes peeled for a diff.

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#5
jack be nimble

Posted 08 December 2017 - 02:34 PM

master of none

Donating Members
8,299 posts

Locationperth sor. 20 mins from brians place

Check yours before you buy one.

4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

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#6
dsm2evo

Posted 09 December 2017 - 03:00 AM

Advanced Member

Active Members
157 posts

Locationcanada

Check yours before you buy one.

yea I am going to but it locked up on me the other night and when I drained the fluid it was a constant stream of silver and flake so im pretty sure there is some damage.

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#7
BMGTZ

Posted 10 December 2017 - 03:29 AM

Grumpy old man from the school of hard knocks

Donating Members
4,554 posts

Locationsouthside of perth WA

I have couple of 3.909 plate lsd here in Western Australia tat have come out of wrecks. I’m pretty sure they would be too heavy for post. If you get desperate we might be able to figure out another shipping method.

BRIAN
Black evo 1 full road rego and done properly/legally

I have heaps of parts...but never the one I need.

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#8
jack be nimble

Posted 10 December 2017 - 11:42 AM

master of none

Donating Members
8,299 posts

Locationperth sor. 20 mins from brians place

Could just post the centre and pinion B. Still bloody heavy

4g93t jumbuck conversion. PRANGED 18/3/12, CHECK MY MEMBER RIDES Page 11. no serious human injuries.
ON THE ENGINE STAND. g4cs 2.4l + Gt35r. PLUS: auto conversion + Awd coming.
thanks for parts and help: BMGTZ, EVOCPE, cwolf, Benozi, Jamo-GSR, 1JUM2NV, RXVII..much appreciated, cheers guys.
Aerodynamics are for people who can't build engines. —Enzo Ferrari
REMEMBER: you cant polish a turd, but you can roll it in glitter.

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#9
dsm2evo

Posted 12 December 2017 - 11:09 AM

Advanced Member

Active Members
157 posts

Locationcanada

I have couple of 3.909 plate lsd here in Western Australia tat have come out of wrecks. I’m pretty sure they would be too heavy for post. If you get desperate we might be able to figure out another shipping method.

I appreciate it man, I had mine apart tonight and it looks like it may just need some new bearings though. I want to disassemble the actual diff itself and see how the spider gears are inside and if they are destroyed or not cause otherwise I don't know where the metal shavings are coming from unless my bearings just gave out.

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#10
howell

Posted 02 January 2018 - 04:48 AM

Newbie

Members
4 posts

LocationUS

I appreciate it man, I had mine apart tonight and it looks like it may just need some new bearings though. I want to disassemble the actual diff itself and see how the spider gears are inside and if they are destroyed or not cause otherwise I don't know where the metal shavings are coming from unless my bearings just gave out.

I believe every Evo from 0 to 10 uses the same rear diff internals.

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