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Old April 25th 2008, 12:15
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DORIGTT DORIGTT is offline
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Join Date: Jul 2002
Location: Forest Grove, Oregon
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What can be done to fix this powerband?

Hello all,

I'm looking at the dyno chart that Marco put on here and am curious as to how to make it better.

The power and torque figures look good, I'm just wanting to see the 'start' of it happening a bit lower and revving up higher.

What mods to this 1.9L WBX could be done?

Cam - hydraulic for quietness and maintenance issue,
Rockers,
Exhaust system diameter
Etc.

FYI, I've got a T3 that I plan to use

Here is an excerpt from Marco on the engine...

More gold, more gold!!!

This is the final results of the test 1914cc WBX turbo motor before the big one goes in!!!!

I was surprised with the power output of this motor, the turbo system is over-sized for this engine, but it has been a good testbed for me .

the block is compleatly standered 1.9 DG, wbx with hydro lifters(hence the valve float above 5000rpm!)

With 14 psi of boost it has completely woke up the motor,I could run more boost but the engine rev's so fast, the valvetrain can't keep up!

As you can also see the power band is quite small,that is due to the T3/T4 hybrid turbo being to big for this engine.

The long block is a compleatly stock DG WBX motor with 1-5/8 stainless 4-1 turbo header 56mm single throttle body with 2in runners 8 injectors crank trigered
chargecooler (air temp stayes at 36degC) T3/T4 hybrid Garrett turbo (14psi)
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File Type: jpg 1.9turbowbx.jpg (17.3 KB, 32 views)
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