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I drove Civic RS Manual mission vehicle almost all day long for visiting 5 graves as usual. Remembering my good days with old cars, Familia Rotary Coupe, Skyline GC10 and Air-cooled Beetle 1200, I enjoyed not automatic mission but manual mission. Something in my mind that had been buried for a long time woke up as a matter of fact. I felt like I am much younger as I imagine. So, I determined to keep this vehicle at hand from now. Fine tuned motor and sophisticated trans-axle is above words.

Problem is the suspension construction that had been modified so heavily, shorter and hard springs are installed, in blue painted prevailing in the field. According to the modification, 25mm low-down, bump-rubber in yellow was cut away with irreversible attitude.

As my dark mind, I ordered the new parts at over 5,000 yen.

Muscle work for suspension spring replacement would be performed this end of the week. Complicated total toe adjustment including establishing Zero thrust is waiting, aha miserable!

Yaris Z is disappearing and Civic RS is replacing. Spoon spring is too hard to endure for me, that would be returned into genuine parts soon. Remembering manual transmission that I experienced, lateral moving way of shifting "H" patterns were free, Familia Rotary Coupe and Air-cooled Beetle 1200. Consequently, I felt some resisting feeling on the construction of the transmission in Civic RS, the neutral sifting position is guided on the middle position between 3ird and 4th. So, I modified a bit by moving the end of returning spring position resulting in reducing the resisting power half strength. No complicated disassembling the trans axle itself, just the base portion modification was enough. Unnecessary muscle work done every shifting motion was reduced fairly, considerable improvement was observed as a matter of fact. As my pleasant matter, strut tower and bulkhead are connected mechanically, so firm construction. Unpleasant noise in cold start phase is discerned on the VTC actuator portion though rubber cover is applied.

As a matter of surprise, Blow-by gas combustion hose was not connected, between cum-cover and intake air way after air flow meter. Judging from the clump mark on the hose, so long period of time this condition was left undone. Deeper consideration led me the conclusion that measuring mal air volume imparting less air flow because of opened blow-by gas hose. Also, blow-by oil mist gas had been scattered in the engine room.

I'll come to know how the fuel consumption would be, better or not. Any way, different signal from the air flow meter would any transition to ECU. Former mischievous person did unusual attitude?

Spending all day long yesterday, I visited six tombs, 12 flowers were prepared for that. Driving Yaris Z with suspension spring harder modified, working fatigue was not so much as imagined. By the way, best designed setting by the manufacture's engineers cannot be exceeded by any layman tampering. The only way to make some customizing is minimize the constructive tolerance as less as possible.
The most effective element is thrust angle in the suspension construction. This proposition is relatively easily done if the measuring and scaling devices could be obtained if it is done by DIY.
Though some keen observation skill and concentration are required, driving feel changes apparently after the adjustment could be carried out adequately.
Computerized emission control and various safety system prevent an ordinary user to modify a secret in the black box.

Setting the thrust angle to zero minimizes sliding friction during driving, generating only rolling friction. This is because the forward and backward vectors are independent during driving, and aligning the directions of these vectors results in a thrust angle of zero. Normally, a car with a thrust angle will move in a circular motion without steering input, but the driver will perform corrective steering to maintain a straight line. At this time, the caster action of the steering wheel comes into play, reducing the measured thrust from the front by about half, making it difficult to notice. While thrust should be zero whether measured from the front or rear, it is possible for only one to be zero; in this case, the measurement from the front should take precedence.