Toymods Car Club Inc: Tech & Conversions => AE86 with S13 IRS

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improvedae86
Forums Junkie

Location:
Melbourne
Registered:
January 2003

Re: AE86 with S13 IRS	Sat, 25 June 2005 11:13

Here is a picture of mine after about 8-10ish hours of work . http://putfile.com/pic.php?pic=6/17505243115.jpg&a mp;a mp;s=x2 Down points that other IRS { mutlilink } to Ae86 conversion that i have seem , apart from maybe the Hot Staff full custom subframe are : 1. The Chassis has been cut in lots of different areas , making it bloody weak even with a cage fitted . 2. The car would have been a shell to start with , and would have had to be inverted for brackets etc to be welded to the chassis . So its not a bolt in job . 3. The Subframe is solid mounted so the torque loading has not been distributed into the suspension so to apply even loading to the driving wheels . As well as adding road noise which the rear of the Ae86 isnt great for by modern standards . 4. All the suspension arms are always aftermarket adjustable units to correct the poor alignment from the bad positioning of the subframe . Also always rose jointed adding more road noise . And making the price of the conversion much more . 5. The track issues , the need for flared guards are also caused be the incorrect angles of the suspension arms causing the movement arch at the ride height position equaling a full extended track . At this position tyres do not move inward on the upward travel passed the wheelarch . 6. The driveshaft are not running perfectly straight so to cause the least amount of driveshaft friction and making the shaft cv contact area at the strongest points . Also the input flange to gearbox tail shaft angles must be way out with the incorrectly positioned subframe and diff . 7. The use of long travel s13 coilovers , or no travel ae86 ones . With the multilink in position the wheel travel should be far greater that the live axle so whilst fully bottomed out the subframe lowest point should contact the ground before full wheel travel is achieved . This makes sure that with the correct spring rates the vehicle doesn't run out of wheel travel whilst full corner loading is applied to that wheel , a example of this is a every porsche from the 993 to the latest gt series . 8. The poorly positioned subframe again causes the suspension angles to produce a higher rollcenter that the standard s13 , as well as producing large amounts of toe in on the down travel , eg braking hard front dive . Sure this creates a stable rear whilst braking due to the added toe in , but distracts from the ability for the vehicle to be turned in under braking . Eg mazda last s8 rx7's had this removed due to the toe pulling the vehicle almost straight under heavy braking as commented by the press at the time . 9. The toe arm link positioning causing large toe and camber changes as well as the fact that it doesn't fit under the vehicle without the car being cut , or the subframe once again being in the incorrect position . I would rather not have such large changes in the geometry , this give different tyre slip angles causing a non predicable feel especially in the wet . Sure the live axle is great , but it is predicable , stock s13's in the wet are not . 10. All these other conversion might have missed the point of a Ae86 , its cheap and the rear conversion shouldn't cost shitloads , its only a old corolla at the end of the day Maybe a under shot of the others would be great for a better understanding behind these conversions [Updated on: Sat, 25 June 2005 11:13] [Report message to a moderator]

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