Stop wheel hop 1989 FC

Rotary Evolution · 03-01-2011, 02:36 PM

i'm not sure about the verts but the best bang for the buck to reduce wheel hop in the coupes is a pinion snubber, which costs about $7 and takes about 45 minutes to install, most of that spent removing the bins to get a drill into the center tunnel area above the nose of the differential.

this also helps keep your $180 differential mount from ripping under the stress of wheel hop.

rotarydream · 03-04-2011, 09:59 PM

The 91 convertibles came with a 4.10. Info direct from the 1991 sales brochure.

project86 · 05-13-2011, 05:33 AM

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NoDOHC · 01-01-2012, 07:46 PM

I found that reducing the negative camber on the rear wheels reduces tire spinning on launch dramatically and seems to improve wheel hop. Launch acceleration measurements:

Stock suspension height: 0.93 gs max
Lowered 0.9" (Eibach springs, -1.8deg and -2.7deg): 0.87 gs max
Lowered 0.9" Camber corrected to -0.9deg and -1.6 deg: 0.93 gs max

This is using the stock size tires on a similar day (obviously not the same day).

I can still get axle hop, but it is only if a drop the clutch abruptly with the engine at 2000-4000 rpm and the throttle partially closed. Without camber correction, the axle hop was a problem on a hard launch, now it just squats and goes.

05-13-2011, 05:33 AM	#18
project86 Can't.Make.Up.My.Mind. Join Date: May 2009 Location: Murfreesboro, TN iTrader: (3) Posts: 1,377 Rep Power: 17	.... __________________ '90 GTUs Stay up to date with my photography '06 Toyota Highlander Hybrid '10 Toyota Prius "Initial Success or Total Failure"

01-01-2012, 07:46 PM	#19
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin iTrader: (1) Posts: 855 Rep Power: 16	I found that reducing the negative camber on the rear wheels reduces tire spinning on launch dramatically and seems to improve wheel hop. Launch acceleration measurements: Stock suspension height: 0.93 gs max Lowered 0.9" (Eibach springs, -1.8deg and -2.7deg): 0.87 gs max Lowered 0.9" Camber corrected to -0.9deg and -1.6 deg: 0.93 gs max This is using the stock size tires on a similar day (obviously not the same day). I can still get axle hop, but it is only if a drop the clutch abruptly with the engine at 2000-4000 rpm and the throttle partially closed. Without camber correction, the axle hop was a problem on a hard launch, now it just squats and goes. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

03-01-2011, 02:36 PM	#16
Rotary Evolution rotaryevolution.net Join Date: Feb 2011 Location: Las Vegas, NV iTrader: (0) Posts: 248 Rep Power: 14	i'm not sure about the verts but the best bang for the buck to reduce wheel hop in the coupes is a pinion snubber, which costs about $7 and takes about 45 minutes to install, most of that spent removing the bins to get a drill into the center tunnel area above the nose of the differential. this also helps keep your $180 differential mount from ripping under the stress of wheel hop.