◆Plug-in diameter (IN side): Φ9mm ◆Thickness of the reed valve: 0.05mm
*For stock air cleaners.If your vehicle is equipped with an aftermarket air cleaner, please purchase regular T-REV.
T-REV", which is achieved by the technology of the artisan, has a special structure which is different from the conventional pressure reducing valve. In order to increase the flow speed of blow-by gas discharged from breather by using the vortex in fluid mechanics and to discharge smoothly, "Spiral Line" is applied inside of T-REV, and furthermore, by making the reed valve surface into three surfaces, the force per surface is dispersed and the structure to discharge blow-by gas more smoothly. It has become the structure to discharge blow-by gas more smoothly.
Since T-REV uses the characteristic triangular pyramidal design reed valve, there is no malfunction of the reed valve due to excessive outside air from the air cleaner box and no restriction of the installation direction.
■What is T-REV? Currently, reciprocating engines are the mainstream of internal combustion engines for automobiles on the market. The reciprocating engine is the most basic internal combustion engine today, and the processes of "1. intake," "2. compression," "3. expansion (explosion)," and "4. exhaust" are converted into rotational motion through the crankshaft by the repetitive motion of the pistons in the engine.
In the engine, this work is being done at a blinding speed of several thousand revolutions per minute. The points of the crankcase pressure reducing valve (T-REV) are located in the case below the piston.
When the piston is pushed down at high pressure by expansion (explosion), some of the gas blows through the piston rings and flows into the crankcase.This kind of gas is called "blow-by gas", and the pressure in the crankcase is increased by this blow-by gas, and if the piston is lowered at this time, it becomes a strong force resistance.
This "pumping loss" is one of the engine brakes, but it also resists the piston motion of the engine.
This over-pressurized blow-by gas is discharged from the breather (a hole, pipe or hose to drain the blow-by gas), but the crankcase remains pressurized because the outside air is sucked in when the piston rises or the accelerator is turned off.
Therefore, by installing the crankcase pressure reducing valve "T-REV" in the breather path, it prevents the backflow of blow-by gas and outside air, and by optimizing the pressure in the crankcase (negative pressure), the original performance of the engine can be demonstrated and the same power can be obtained with less fuel.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
Bought this for my 1990 Zephyr 550. I wasn't confident that it would have much of an effect, or that I would like whatever effect it did have, but after reading just about every T-rev review on Webike (almost all of which are four or five stars) and checking out some of the cool trev videos on YouTube, I took a chance. Result: I couldn't be happier. I'm not sure how best to describe the effect except to say that my bike rides much smoother now. It's more "civilized." Smoother idle, shifting and deceleration. Imagine you had a passenger and you were trying your best to make her ride as comfortable as possible. You'd be gentle with the shifting, maybe feathering the clutch to ease the transitions. That's what this feels like - a gentler ride without having to expend the mental energy of babying all the transitions. The best part is at highway speeds. Say you've got the throttle wide open. Normally when you release the throttle you'd feel a sharp deceleration. With this thing, the bike just keeps going smoothly. Less herky jerky stop-go. More flow.Some fellow riders suggested just buying a cheap PCV or check valve instead. I don't think that would work. As I understand it, the t-rev consists of reed valves that open and close with each piston movement, thousands of times per minute. I don't think PCV valves operate on the same timescales - they're either open or closed (or maybe open a varying amount according to engine speed, but not opening and closing with each cycle). There are a few downsides. For Zephyrs and GPZ's, this installs in the airbox, so it's a bit of pain to put in (have to remove the tank). And you can't see it, which is a shame because it's a nice looking piece of kit. I'm also wondering if it has a negative effect on airflow, though I haven't noticed any decline in performance (If anything, my bike seems more responsive). Another drawback is that these require maintenance - cleaning every 10K km and overhaul at 20K km ($50USD for an overhaul kit). And lastly, the price is ridiculous. That said, I think it's worth the money and am very happy with my purchase. View Detail
I was able to try it on my own Motorcycle, but it was more than I imagined! I participated thought to alleviate Engine braking but I bought it for more effects than that.
As well as alleviating Engine braking, the engine turns to Smooth surprisingly
It is regrettable that we GPZ 900 R can not see Parenthesis nice Anodized Body for installing Air Cleaner Box. Well, sorry
If you are lost, please think that you are deceived, especially to those who are on A little older Motorcycle like us are really a Recommendation.View Detail
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