35mm or 40mm measurement

spnkzss

spnkzss

New member
Ok, so I got a hold of a LSD, but am kind of concerned. I need a 35mm, but think I got a 40mm. Before I say how I came up with that number can I get someone to tell me where I should be measuring?

Thanks

Spanky
#03 ITC '90 Honda Civic WDCR
 
Originally posted by spnkzss:
Ok, so I got a hold of a LSD, but am kind of concerned. I need a 35mm, but think I got a 40mm. Before I say how I came up with that number can I get someone to tell me where I should be measuring?

Thanks

Spanky
#03 ITC '90 Honda Civic WDCR
Click to expand...


Measure the outside diameter of the "tubes" that stick out from the sides of the diff. The inside of the "tube" is splined to correspond with the half shafts. That outer dia. would be either 35 or 40 mm
 
I was afraid you where going to say that. I measured and got 40mm. There where no bearings installed so it made it easy.

Thanks.
 
Originally posted by spnkzss:
I was afraid you where going to say that. I measured and got 40mm. There where no bearings installed so it made it easy.
Click to expand...

Finding 40mm Quaifes is easy, right? :-P



------------------
Gregg Ginsberg
Visit my homepage / blog
'89 CRX Si -- MARRS ITA #72
WDCR-SCCA Rookie of the Year 2003
 
Originally posted by spnkzss:
I was afraid you where going to say that. I measured and got 40mm. There where no bearings installed so it made it easy.

Thanks.
Click to expand...

Send me an email I might have use for that unit.

Tom Blaney
[email protected]
 
While we are on the subject, and I have been putting off the LSD purchase for years, '88 CRX SI....35 or 40 mm? Thx in advance.
 
Civic/CRX Si
88-89: 40mm
90-91: 35mm

Say "Hi," to Tom Fowler for me, Spank. :-P

[This message has been edited by Gregg (edited May 13, 2005).]
 
Originally posted by Gregg:
Civic/CRX Si
88-89: 40mm
90-91: 35mm

Say "Hi," to Tom Fowler for me, Spank. :-P
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Why didn't you tell me this information before? I've been scratching my head for awhile trying to find this information out. That means it might work for Kevin. I believe his is all the '89 setup. Remember the whole wiring BS.

hmmmm

Spanky
#03 ITC '90 Honda Civic WDCR
 
Jeez Rob,
Take apart the tranny, get out the welder and weld the spider gears together and be done with it.
I am sure that the nine ITC drivers in MARRS could have a meeting and vote on a "Don't ask, Don't tell" policy that we could all live with.
If the "locked" tranny won't work.
smile.gif
smile.gif
smile.gif

cheers
dave parker
wdcr ITC#97


[This message has been edited by dave parker (edited May 14, 2005).]
 
Originally posted by Gregg:
I didn't tell you because I didn't remember it off the top of my head. I also thought you went to Quaife's web site....

http://www.quaifeamerica.com/differentials...s/diff_apps.htm

Foolish me.... :-P
Click to expand...

LOL

I'm going to know everything I need to know tonight. I have a feeling OPM is my last chance.

Dave,
I don't know that I could handle the pressures of a "Don't ask don't tell" policy. I mean everyone might look at me differently. No one will want me in the showers with them. LOL
smile.gif
 
The THOUGHT of you in the shower is making my stomach quesy. Please DO NOT bring that subject up ever again.
smile.gif


Can you say "projectile vomiting".

cheers
dave parker
wdcr ITC#97
"Don't ask, Don't tell" it could be the new IT mantra
 
This whole 35mm/40mm thing has gotten a bit out of hand.

It's pretty well established that the info at the Quaife website is not only unclear, it's flat, outright, WRONG..... but people continue to quote it (I did, too, until I figured out it was wrong), hopefully it didn't lead you to buy a diff for your car before measuring.

I have a couple of 90-91 transmissions, and they're both 40mm.



[This message has been edited by Jon Nelson (edited May 18, 2005).]
 
I have measured and it is 35mm. I have a 40mm out of an Si that I compared it to, along with actuall hard measurements.

What are those transmissions for? Mine is the 4-speed box.

Spanky

Originally posted by Jon Nelson:
This whole 35mm/40mm thing has gotten a bit out of hand.

It's pretty well established that the info at the Quaife website is not only unclear, it's flat, outright, WRONG..... but people continue to quote it (I did, too, until I figured out it was wrong), hopefully it didn't lead you to buy a diff for your car before measuring.

I have a couple of 90-91 transmissions, and they're both 40mm.

[This message has been edited by Jon Nelson (edited May 18, 2005).]
Click to expand...
 
They're Si transmissions, one from a Civic, and one from a CRX.

I think you're stuck with 35mm if it's a 4 speed, but not totally sure.... if you are, the options for an LSD are limited. Did you get an OBX LSD?

AFAIK, OPM or Kaaz are your only options.

Good Luck,

Jon
 
Unfortunatly, yes I did get the OBX. Luckily it is 40mm so I can send it back. Once I can get the money back from that I can get the OPM. I want to look into the Kaaz a bit more, I just haven't found one yet.

Thanks

Spanky

Originally posted by Jon Nelson:
They're Si transmissions, one from a Civic, and one from a CRX.

I think you're stuck with 35mm if it's a 4 speed, but not totally sure.... if you are, the options for an LSD are limited. Did you get an OBX LSD?

AFAIK, OPM or Kaaz are your only options.

Good Luck,

Jon
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