K-jet +200 bhp

3hirty8ight · Jan 3, 2007

1.8t yawn for sure, nah k-jet isnt that bad, just that on a flow test at tsr back in the day the AVERAGE flow rates between injectors could be up to 40% different!?

fthaimike · Jan 3, 2007

Sorry i meant the yawn as in each engine a step up from the last buy yeah 1.8T common but good power.

edit: as in 8v being the (old) original then the later 16v, g60, vr6 1.8T etc each very different in ways to the previous & hard to compare sometimes even if we do pool money into them.

I made sure last time on the last rebuild i fitted new injectors (damn rip off the price of those things).

proteus · Jan 8, 2007

Tubthumped said:

The cylinder head is THE MOST IMPORTANT area to be considered by the serious tuner. It's design has more bearing on the end result, performance-wise, than any other component of the engine. There is no way that high horsepower can be obtained if the head wont flow efficiently, and in turn burn that air/fuel mixture efficiently.

It is often thought that there is a direct relationship between high air-floe numbers and high power output. In priciple this theory sounds correct, but in practice it doesn not always work out that way.

At one time an American manufacturers factory racing depertment picked 'the best' high performance heads from the production line for modifying. After being ported, each head was flow checked. The heads that recorded the best flow rate where kept for the factory racing team. The other, lesser heads, where sold on to selected independant and privateer teams. Interestingly, on the Dyno, the heads that produced the best flow rates actually recorded lower power figures than the engines with the lesser flow rate heads!

Going on from the relative simplicity of flow rates you have cylinder head 'swirl.'
Swirl is defined as the directional effect imparted to the inflowing gas by the shape of the inlet port, or its angle of entry into the combustion chamber. Swirl assists eventual combustion by causing the mixture to be evenly and homogenously distributed in the cylinder. At th end of every exhaust cycle there is always a ceryain amount of exhaust gas that is left unscavenged in the cylinder. If this exhaust gas is allowed to collect into a pocket, it will retard the ignition flame travel, even preventing quite an amount of the fuel/air mixture from burning. Good swirl will prevent this pocket of exhaust gas from forming by evenly mixing the fresh mixture coming into the cyinder with the unscavanged exhaust gas.
Click to expand...

Reads VERY VERY similar to 'Four-Stroke Performance Tuning' by A. Graham Bell, chapter 3 on Cylinder Heads.

Slight copyright infringement here?

GVK · Jan 8, 2007

Are you the police?

A.N. Other · Jan 8, 2007

Or Customs & Excise?

Ruuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuunnnnnnnnnnn !

RobT · Oct 24, 2015

bumpy bump

Toyotec · Oct 25, 2015

Bit of a bumpty bump going on.

Another 200bhp K Jet from back in the day.

Barny says the old girl is hidden deep into storage. Will give him a message for him to share more.

Sirguydo · Oct 25, 2015

Hmmm based on a gti engineering RE2000 engine I've got 3 of them now really need to get rid of H reg car without engine and my red 8v and I could start working on my RE2000 cars

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K-jet +200 bhp

3hirty8ight Forum Member

fthaimike Forum Addict

proteus New Member

GVK Paid Member Paid Member

A.N. Other Banned after significant club disruption Dec 5th 2

RobT Forum Junkie

Toyotec CGTI Committee - Happy helper at large Admin

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K-jet +200 bhp

3hirty8ight Forum Member

fthaimike Forum Addict

proteus New Member

GVK Paid Member Paid Member

A.N. Other Banned after significant club disruption Dec 5th 2

RobT Forum Junkie

Toyotec CGTI Committee - Happy helper at large Admin

Sirguydo Fastest milkman in the West Paid Member

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