Just a quicky, I've put a 205 engine and complete wiring loom into my narrow body 185 and have used the front drive shafts as well but having issues with wandering. Will the difference in track width from the front to rear cause this? If so what would you recommend doing? ie spacers.

Im going to replace all the bushes soon including the steering rack ones, ive also fitted coilovers recently but I had it all setup so hopefully that isnt the cause of the wandering.

Cheers

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

Have you done anything to the front suspension, or is it standard 185 ?

I know the 205 rear is wider so diveshafts aren't interchangable, but not sure about the front. If the 205 front is the same width, then I don't see an issue. If you've used longer driveshafts and they are binding as a result, it may cause wandering issues but I'd expect loads of vibration & noise at the same time.

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If at first you don't suck seed, try drier grain.

I fitted bc coilovers and the 205 driveshafts are about 10mm longer than the 185s, but do the track widths need to be the same on both front and rear?

There isnt anything else other than the wandering from it.

Ive considered fitting the 205s rear sub frame, diff and driveshafts but I believe its not that simple if at all possible.
So if the width is the problem I'll get some spacers made up and extend the rear wheels out to compensate for the difference.


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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

BC coilovers won't make the front wider unless you have done other modifications such as extended bottom arms which will then throw out camber.

if the front is the standard 185 width, you should use 185 driveshafts otherwise you will be at one end of the travel on the inner CV which will cause issues, maybe including what you're experiencing.

Compete rear 205 rear end is feasable but you will need custom tie bars or relocate the tie bar mounts. On a narrowbody you will probably also need to roll the arches or fit arch extensions.

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If at first you don't suck seed, try drier grain.

Ive not done anything else other than using the 205 driveshafts, do you know if the 185 driveshafts fit onto the 205 gearbox? cause I had to squeeze the 205 ones onto the hubs.

Cheers for your help

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

185 driveshafts do fit the 205 gearbox.

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If at first you don't suck seed, try drier grain.

Bugga I gave them away with the box, typical. Looks like I'll be on the look out for a pair.

Cheers for all your help mate

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

You mention you had the suspension 'set up'. What front and rear toe are you running? You should have a setup printout from the people that set the suspension. The rear toe if not set correcty could easily result in the car wandering. Lots of tyre and suspension emporiums don't even bother setting the rear toe as they try and adjust the wrong end of the snail cam bolt and think its seized!

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Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

I'll have to check the print out.

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

Ive got the info

Front

Caster left 1.78
Caster right 1.99

Camber left -0.31
Camber right -0.17

Toe left -0.01
Toe right 0.02
Toe total 0.01

Rear

Camber left -0.37
Camber right -0.10

Toe left 0.29
Toe right 0.19
Toe total 0.48

Thrust angle -0.05

Doesn't mean a thing to me lol

According to the print out its within the tolerances although its for a toyota celica 90-97 GT4 ST185

Which makes me think that the tolerances could be wrong. 97???

Any idea if the readings are ok?

Do you think the difference between the front and rear wheel base could cause it?

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

But you haven't changed the front or rear wheel base from standard.

Are you running significantly different ride height at either end ?

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If at first you don't suck seed, try drier grain.

No mate stardard ride height and everything less the driveshafts are standard, wont the wheels at the front be slightly wider due to the driveshafts from the 205 being longer? Im still pretty new to mechanics, but certainly learning quick especially with the cost of garages

Only other thing that comes to mind is the steering rack mounting rubbers and the tie rods, ive changed the tie rod ends cause there was a lot of play but haven't got around to the rest yet and they're probably the originals from 1990.

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

The position of the hubs is fixed by the struts and bottom wishbones. The driveshaft length is variable by a rage of movement on the inner CV joint so these will only have an effect if you reach the end of travel and it pushes outwards against the suspension rubbers.

One other possibility, did you tighten the driveshaft centre nuts to the correct high torque (150lb/ft from memory) ? Some people make the mistake of just finger tightening them like on old fashined wheelbearings, this then gives you play in the wheelbearings and rapidly leads to failure.

Have you done anything to the rear ? A common mistake is to fit polybushes without realising the standard 'rubber bushes' are actually spherical bearings inside with zero in/out movement. This makes the back end very squidgy and will cause wandering and oversteer.

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If at first you don't suck seed, try drier grain.

Driveshaft centre nuts then, I did them up finger tight, I'll torque them up and see how it improves.

Cheers mate I'll post up when I've done it

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White 1990 GT Four ST185 (Import)
Now with 205 engine, ecu, engine & internal loom inc Speedo binacle and heater control.

Chances are you'll need 2 new bearings very soon.

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If at first you don't suck seed, try drier grain.