Intake air temperature with hot air shield

After I've installed intake hot air shield, I've measured again the intake air temp.
Surprisingly that the intake air temp is significantly reduce. The temp reduce more than 10 deg Celsius when at the toll and temp also take lot of time to ride to max.

So it's very big improvement by only install a shield.

Go to : Hot Air Shield

Air Intake Hot Air Shield (2nd Attempt)

This is my 2nd attempt for air intake hot air shield. 1st attempt is failure where air are too restricted and engine choked. If this success, I'll make another shield with better materiel.

Go to : Intake Air Temp Measured With Hot Air Shield

4age20v ISCV CAI trick

Before this I've recorded air intake temperature at different time and different place. And here is the result.

I've never taught temp that feed into combustion chamber is that high. So I am thinking how to feed lower air temp into combustion chamber.

Then I got this idea. 

Make a CAI (cold air intake) for ISCV (idle speed control valve) and split the ISCV intake from main intake hose.

Original condition of ISCV is same as below.

Then take another hose to make individual hose to feed air to ISCV. Put the end of the hose in front of the engine to avoid hot air from engine bay. Modified hose is as below.

Actual picture for the CAI that I've install is like this.

Ignore the cheap water hose that I've been using. This is for temporary testing. Probably I'll replace to a better hose later.

As far I've been using this mod, I can felt better throttle response coz lower intake air temp are feed into combustion chamber.

Twin Pot Brake Caliper Serviced With Repair Kit

After 2 month changed the brake rotor, it start to make sound again.
http://me2kimi.blogspot.com/2012/03/replacing-disc-and-brake-pad.html

So I've decided to service the caliper using repair kit. But unfortunately, I can't find brake repair kit for Levin twin pot caliper.

After been to few spare part shop, I've to buy 3 pack of brake repair kit. 2 sets of rear brake repair kit for Camry Acv30 and the other 1 is full set repair kit for Avanza. The Acv30 repair kit is compatible with twin pot size, but since twin pot caliper got 4 pistons in total, so I've to buy it 2 sets. Then I need to buy another full set of brake repair kit for just to use the slide pin boot as the boot did not sell separately.

Contain of the repair kit

First, took out the caliper and I need to push out the pistons from the caliper. I use portable tire pump to applied pressure into the caliper.

Before that, I've to wrap around the 'blue tip' using white tape or plumber tape to make sure it's air tight.

Then, put something at the other end of the piston to prevent it from pop out.

After that, slowly i can remove the piston from the caliper.

Lets see whats inside the caliper. It's full of rust and dirt. No wonder the brake is not working perfectly after I think 20 years of its age.

The caliper looks good after been clean, but not so good coz its aging already.

Then it's time to install the oil seal, dust cover and secure ring. When the oil seal is outside caliper, the diameter size is larger than size of the piston housing. But don't worry, once I put into the pistons housing, it will shrink and fit.

Now fit the dust cover and secure ring.

Before I put piston inside the caliper, I've lubricated it first with grease that come with Avanza repair kit.

Push piston down a into dust cover a bit (quite hard to fit into the dust cover) until touch the oil seal. 

Grab up end of the dust cover to fit to the piston.

And slowly push the piston inside the caliper.

When I tried to install slide pin boot into caliper bracket, it don't fit coz it got outer groove on it.

So I cut it out to be like this.

Then it fit inside the caliper bracket nicely.