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diff length for fitting convos 15*8.5 3 3\8bs

Started by lh 4dr , Apr 25 2011 08:54 AM

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15 replies to this topic

#1 $diff length for fitting convos 15*8.5 3 3\8bs: post #1$ lh 4dr

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Name:dave
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Posted 25 April 2011 - 08:54 AM

i am sure convs in 15*8.5 with 3 3\8 bs have been fitted to the rear of lh toranas many times and was hoping some one could tell me what the diff length and axle lengths are for an un flared 4 dr lh as i am about to start building a 9" for it soon cheers

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#2 $diff length for fitting convos 15*8.5 3 3\8bs: post #2$ _hdt gpa_

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Posted 09 August 2011 - 09:22 PM

[quote name='lh 4dr' timestamp='1303685669' post='587056']
i am sure convs in 15*8.5 with 3 3\8 bs have been fitted to the rear of lh toranas many times and was hoping some one could tell me what the diff length and axle lengths are for an un flared 4 dr lh as i am about to start building a 9" for it soon cheers

im needing the same ...lol cause im about to do the same but with flares with same size rims to.

i got told from rod tech to pull the stock diff out put the tyres in place and measure between the rims but my car is at the paint shop and he wants to keep it as a roller which is fair so ive been trying to find a diff length so i can get the diff ready for when the car is painted

thankx for any help
richard

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#3 $diff length for fitting convos 15*8.5 3 3\8bs: post #3$ _dirtbag_

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Posted 10 August 2011 - 07:42 AM

Easiest way to determine how much to narrow a diff is to fit the wheel and measure how much room there is on the inside edge of the tyre, and cut the diff down accordingly. Leave at least a half inch gap, more if your rear bushes are a bit worn.

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#4 $diff length for fitting convos 15*8.5 3 3\8bs: post #4$ lh 4dr

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Name:dave
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Posted 13 August 2011 - 07:47 AM

i got a pm from another user telling me his diff measured 1325mm from face to face using vr disc brake but they did not fit the shock mounts (i personally dont know if this is correct or not) i sent him another message about 2 months ago about how his fit up went and what he did about the shock mounts but no reply. from what i have been told using any disc brake setup apart from a willwood kit with 2.36 (i think the smallest offset you can get) offset you will need to modify the inner rails and have problems with the shock mounts. (other problem wilwood kits are not adr compliant). as i am running convos i am going to go hq drum brakes as i am told it will be a tight fit but it will all fit without mods to the car. i am going to take my car to a fabrication shop and just get them to measure, cut and fit it. once it is fitted (probably in 6 - 8 weeks) i will post up all the info. I AM NOT 100% SURE ON THIS INFO but have been trying to find out this info for a while and is all i could come up with as you have flares on the car the caliper fit probably wont be a problem and length will probably be longer

Edited by lh 4dr, 13 August 2011 - 07:53 AM.

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#5 $diff length for fitting convos 15*8.5 3 3\8bs: post #5$ _LXSS350_

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Posted 13 August 2011 - 08:27 AM

Doing a few diffs and measured up the A9X. Disc to disc its 1432mm, Will measure up a banjo drum to drum when the next car gets here on the 26th.

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#6 $diff length for fitting convos 15*8.5 3 3\8bs: post #6$ makka

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Posted 07 September 2011 - 05:00 AM

standard width diff and no flares fits 15x8 with 5"bs perfectly, you do the maths.....

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#7 $diff length for fitting convos 15*8.5 3 3\8bs: post #7$ TerrA LX

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Posted 02 January 2012 - 03:57 PM

Doing a few diffs and measured up the A9X. Disc to disc its 1432mm, Will measure up a banjo drum to drum when the next car gets here on the 26th.

Did you get the chance?

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#8 $diff length for fitting convos 15*8.5 3 3\8bs: post #8$ _CHOPPER_

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Posted 02 January 2012 - 06:12 PM

Stock LH-UC diff drum to drum is 56.5" (1435.1mm).

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#9 $diff length for fitting convos 15*8.5 3 3\8bs: post #9$ _WheelShed_

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Posted 13 August 2012 - 06:42 PM

standard width diff and no flares fits 15x8 with 5"bs perfectly, you do the maths.....

Hi Makka,
What tyre would you suggest for the 15x8 with 5" BS?
Cheers

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#10 $diff length for fitting convos 15*8.5 3 3\8bs: post #10$ TempesT

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Name:James - JImmy or Jim
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Posted 13 August 2012 - 08:39 PM

ohhh what a can of worms it is fitting big wheels on unflared torries

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#11 $diff length for fitting convos 15*8.5 3 3\8bs: post #11$ _WheelShed_

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Posted 14 August 2012 - 09:17 PM

ohhh what a can of worms it is fitting big wheels on unflared torries

Why is it so hard???

I was thinking a 245/60/15 on a 15x8.5, 5' BS as long as it's not too low? Anyone??

Keen to see what size tyre Makka is running.

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#12 $diff length for fitting convos 15*8.5 3 3\8bs: post #12$ _rollo_

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Posted 18 August 2012 - 10:14 PM

PLAIN AND SIMPLE I WENT THROUGH ALL THIS DRAMA WITH (PRO 400 ) YELLOW HATCH BBC THEY DONT FIT UNLESS U MINI TUB IT NO MATTER WHAT U HAVE TO MODIFY THE WHEEL ARCHES AND THE 5 INCH BACKSPACE LOOK LIKE CRAP COMPAREDTO THE 3 3/8 .I MIGHT HAVE ALL THIS WRITTEN SOMEWHERE BUT THIS WAS BACK IN 1994 WHEN I WAS 21 I ACTUALLY USED TO KNOW THE MEASUREMENTS OF BY HEART THE STANDARD AND THE MODIFIED. THE FIRST PIC IS A HATCH IVE HAD SITTING FOR 12 YARS I HAVE 15X10 5INCH BACKSPACE ,THE SECOND IS THE FIRST ONE FROM THE MAGAZINE

8.jpg 70.36K 8 downloads

052.PNG 145.33K 10 downloads

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#13 $diff length for fitting convos 15*8.5 3 3\8bs: post #13$ _rollo_

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Posted 18 August 2012 - 10:17 PM

Sorry about the typos, and the order the pics are in the first pic is PRO 400 and the 2nd is the L31 SS factory lina mint car ive had sitting for 12 years i hope to get started on next year just dont kow what direction to go in yet with engine .

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#14 $diff length for fitting convos 15*8.5 3 3\8bs: post #14$ _BLOWN V6HATCH_

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Posted 18 August 2012 - 10:45 PM

15x8.5" with 3 3/8" backspace 255/60/15. Stock tubs, no mods at all. Not even lipped guards.

Posted Image

I'll measure my diff when i'm under the car next as i'm still running the same length diff using 15x10" with 5" backspace and mini tubs.

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#15 $diff length for fitting convos 15*8.5 3 3\8bs: post #15$ TempesT

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Name:James - JImmy or Jim
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Posted 21 August 2012 - 08:41 PM

there is r realy good mod that is documented by a member turbo79lx or somthing like that.

basically you cut out a 1" strip of the floor pan and beat the arch back flush with the chassis rail. The next issue you will have with shortening you diff enough is the brakes will foul on the shock. So alot of blokes end up using commo mounts.

Also it is a can of worms becaus there are 100 way to achieve the result and some people like to tuck more of the wheel than others with out the arse of the car sitting up in the air.

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#16 $diff length for fitting convos 15*8.5 3 3\8bs: post #16$ _rollo_

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Posted 23 August 2012 - 09:55 PM

ive got 4 or 5 LX torana,s with really slight minitubs or wheel well work all good in there own ways but all sit diff with the same tyres ill send some pics if anyone wants to see after i take a few shots all fairrly minor but all have a big tyre stuffed in them.