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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Measuring front track
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Wed, 23 July 2003 22:33
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I want to measure the front track width of my TA22. Whats the most accurate way to do this?
Should the stub axles be in line with the chassis rails?
Thanks
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Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Thu, 24 July 2003 00:28
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Track width is measured between the tyres, ie from the centre of the tread.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Thu, 24 July 2003 02:21
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Is that what I should be measuring to figure out what width I need my diff?
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Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Thu, 24 July 2003 04:43
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If you're planning to keep your existing wheels, you should measure from the wheel mounting surfaces.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Thu, 24 July 2003 04:53
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No i'm not keeping my wheels. I now have RA40 struts and MS65 hubs on the front which has increased the track. And I need to figure out how much.
I'm guessing in standard form the rear track is larger than the front?
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Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Thu, 24 July 2003 07:05
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I've never measured front and rear track so I don't know how different it is, but I expect it would be pretty similar if not the same.
You need to measure your front track (from the centre of the tread), and from this you can determine how wide your diff needs to be (ie width = track - wheel offset).
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: Measuring front track
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Fri, 25 July 2003 07:47
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front track is just meassured from the centre of each tyre, just make sure your wheels are pointing straight.
thats all offset is, people can put as wide a wheels on there car as they want and the suspension geometry will still be ok providing the wheel track is the same as original ie, center tyre line to center tyre line, otherwise if you make your wheel track too wide you will fuck up your scrub radius and therefor make bad things happen, for example toe out under hard braking makeing the car fight and be unstable under hard braking,
and if you have a brake failer then when you hit the brakes and only one front brake works and you get toe out well good luck staying on the road.
sorry i couldn't help myself been at Mercedes school all week doing suspension systems and brakes so i'm full of knowledge 
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: Measuring front track
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Fri, 25 July 2003 07:55
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Go to www.drive.com.au
then on the left click on "Value Your Car"
then pick your car and you can get all sorts of good information such as.
TOYOTA CELICA LT Standard Specifications:
Make TOYOTA
Family CELICA
Model Variant LT
Car Series
Year 1976
Doors and Body Style 2D COUPE
Engine Size 1.6 litres (1588 cc)
Fuel System CARB
Cylinders 4
Driven Wheels RWD
Std Transmission 5M
Optional Transmission
Standard Features
Optional Features
Dealer Options
No Cost Options
Bore and Stroke 85x70 mm
Power 76 KW
Torque 137 Nm
Weight to Power Ratio 12.76 : 1 kg/kW
Front Brakes DC
Rear Brakes DR
Wheel Dimension 4.5Jx13
Turning Circle 9.6 m
Compression Ratio 9.0
Final Ratio 4.1
Tank Capacity 50 litres
Exterior Length 4165 mm
Exterior Width 1610 mm
Exterior Height 1310 mm
Front Track 1280 mm
Rear Track 1285 mm
Wheel Base 2425 mm
Front Suspension
Rear Suspension
Kerb Weight 970 kg
Ground Clearance 160 mm
Seating Capacity 4
Highway Fuel Consumption 0
City Fuel Consumption 0
Towing Capacity 0 kg
Release Date 1/11/1971
Discontinued Date
New Price (standard) 4550
Average Kms 0
Model Run Disc`d Foll. by 1968cc model
VIN Location
Country of Origin N/A
and you may notice it even says the standard wheel track in there.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Measuring front track
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Fri, 25 July 2003 07:57
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Ok what I want to do is make sure I can use the same offset wheel all round. I have changed the front struts and hubs which in turn has probably increased the hub face to hub face width, so I want to make sure my diff upgrade is about the same width.
This is why I want to correctly measure the hub face to hub face width.
Am I making sense or am I missing something?
Thanks for the help so far.
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: Measuring front track
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Fri, 25 July 2003 08:04
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go to a smash repair place and get them to hook up there chassis alignment machine to measure the distance from hub to hub that way you can't get any more acurate,
problem with good old tape measure is you may need to jack the car up to do it therefor the distance from hub to hub will change due to wheel travel so only option then would be to use ramps or a 4 post hoist,
just ask a smash repair place and they may be able to help you wih their meassuring equipment.
or just meassure from wheel center to wheel center minus the offset from each wheel and there is the hub to hub measurment.
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