ka-t questions?

[Thesil]

This question might have already been discusses, but i can't find anything by way of search.

Anyway,

I know that the ka-t is renouned for it's board torque band, but what is the top end like? How does it feel? Is this type of power curve ideal for a road racer? if not what kind of racing does this curve tailor towards? does it even really matter?

so many questions.......

[WDRacing]

The turbo makes up for the KA's lack of high end pull. Torque is a must have for all racing. The KA has worked in all scenerios.

WD

[C-Kwik]

This question might have already been discusses, but i can't find anything by way of search.

Anyway,

I know that the ka-t is renouned for it's board torque band, but what is the top end like? How does it feel? Is this type of power curve ideal for a road racer? if not what kind of racing does this curve tailor towards? does it even really matter?

so many questions.......

Most turbos are going to emulate the NA version motor's characteristics. The reason for this is the VE of the motor is still the same at each RPM. So as the VE of the KA drops off in high RPM, so will it in a turbo motor. But it will still be much better than stock. And in actuality, there are other factors that would affect this, such as turbo efficiency, intercooler efficiency, backpressure from the turbine, etc. But for the most part, a turbo on a stock KA will feel like a more powerful version of the stock KA. If you want a better top end, a turbo cam that is more suited to high end VE will be desired.

Just take a look at the torque chart on the XS Engineering site:

http://www.xs-engineering.com/...0.gif

Has essentially the same slope...only it's higher up.

[Dattebayo]

By the way, for all those who dont know, VE stands for volumetric efficiency and that brings me to what i want to ask you people. What is the VE % for the s13 dohc engine? I have a late model 93 and I have been told it is in the high 80's (i just want to get the calculation correct for the best turbo trims) and most performance engines have 90% or better? Maybe thats the real reason you cant break an 11 sec. QMT without nitrous and a big a** turbo.

[C-Kwik]

85%-90% is a fairly accurate estimate of VE for most modern DOHC motors. But keep in mind VE changes with RPM. You'll probably find the best VE for any given motor at about the torque peak.

[ADAMHU]

kats pull hard and strong down low...they give some of that up top...but it still pulls great...

[Pornflakes]

kats pull hard and strong down low...

Tell me about it... :naughty