Toyota Celica GT4 drive train modifications

Under construction - not yet accurate...

Drivetrain

Mod	Benefit	Drawback	Is it a problem?	Notes

Uprated Clutch	To cope with increased power levels Clutch won't slip Can have a little confidence when performing "spirited" starts!	Depending upon type of clutch it may be a bit too on/off! i.e. puck style clutch Increased thrust bearing wear on crank due to greater clamping forces involved	No	Difficult job replacing the clutch, try Mr Clutch ~Ł350 Ensure the clutch pedal will be a progressive action when you select a replacement A new stock 205 clutch won't slip with "normal" driving at 300bhp/300lbft
Lightened flywheel	Improved engine response Engine will rev more freely Increased power as the engine has to rotate less mass	Ł Fitting More prone to stalling when pulling away when stationary Have heard of some lightweight flywheels cracking...	ish	Avoid machining a flywheel to lighten it...it may shatter during use!
Different internal gearbox gearing	Better gearbox Improved "feel" Quicker gear changes Shorter throw Stronger	Ł Nightmare to fit	ish, awkward	Quaife do a kit for the 205
ATF Gearbox oil Article	Less frictional losses More power arrives at the wheels Quicker/slicker gear change	Does not offer the same protection as a GL5 gear oil Long term reliability may be an issue...	Yes in my opinion	Long term reliability may be a problem. Why not try another oil but with improved protection e.g. SMX-S ?
Uprate gear linkage bushes Picture 1 Picture 2	Reduce gear stick movement Quicker gear shifts	Feels a little more notchy	No	If you have a problem locating gears then these may help...