Harrop Hurricane VS. Carbon Fiber Intake

[garickman]

Just wondering if a Harrop Hurricane ITB manifold would really out perform a carbon fiber intake with a single 102mm throttle body. Are ITB manifolds really that much better to justify the high price tag? ($5,000.00).



Are ITB's much harder to tune?

Will ITB's perform well on a daily street driven car?

HARROP HURRICANE: http://www.harrop.com.au/eng_detail....d=99-AMFD11198

OZMO RS SHORT RUNNER INTAKE: http://www.ozmoengineering.com/index...=10&It emid=8

[cornfedbill]

[QUOTE=garickman;965046]Just wondering if a Harrop Hurricane ITB manifold would really out perform a carbon fiber intake with a single 102mm throttle body. Are ITB manifolds really that much better to justify the high price tag? ($5,000.00).

Yes, ITB intakes are better than traditional intakes. A throttle body creates a large volume of air at less than atmospheric pressure. This tends to adversely affect throttle response and efficiency.

Is an ITB $5000 better? I would say likely "no". The benefits may not justify the cost except when money is on the line as in professional racing where they are most prevalent.

Are ITB's much harder to tune?

That I cannot answer from experience. However, I know it is not easy to get a good MAP signal. Alpha N control systems are best suited for ITB intake systems.

Will ITB's perform well on a daily street driven car?

When dialed in, the answer is "yes". There is no technical reason that a properly tuned system would not perform well on the street. New electronic systems are so much better than the old mechanical ITB systems that were not good on the street.

[garickman]

Thanks for the input Bill. I was looking a various intake units and trying to justify the wide range of prices.

Harrop Hurricane $4,950.00

Ozmo RS Short Runner Carbon Fiber Intake $3,900.00

Precision Metal Craft Sheet Metal Intake $2,800.00

Fast 102mm LS Intake $1,100.00

[ace_xp2]

One of the nice things about an ITB set up is how it can make huge cams more liveable. Thanks to the tiny plenum volume from throttle to atmosphere, it takes almost no time to fill (or refill) once the throttle is open, which is great when you can see standoff from the reversion that giant thumper is generating. So the value of an ITB system is also related to the nature of the motor.

[cornfedbill]

Thanks for the input Bill. I was looking a various intake units and trying to justify the wide range of prices.

Harrop Hurricane $4,950.00

Ozmo RS Short Runner Carbon Fiber Intake $3,900.00

Precision Metal Craft Sheet Metal Intake $2,800.00

Fast 102mm LS Intake $1,100.00

That is a big range in price. If money were no object, I would definitely take the Harrop Hurricane. It does have the performance advantage.

Which motor and what heads are you planning to use? This may help you to narrow things down a bit.

The LS7 needs more intake than its smaller siblings and would see more benefit. If you are running a larger displacement, say a 454 version, it would also be a greater benefit.

Will this have a wild cam?

What about the exhaust? You may end up choking the intake flow with a restrictive exhaust and therefore squandering some of the benefit.

[Rebeca_Lynn]

Only issue with newer ITB set-ups is getting everything aligned.

We have used newer style Kinsler electronic ITB intakes and older Lucus and webber style intakes.

With the newer style intakes you do not have to worry about the fine tunning like you did in the past.

As a side not ITB intakes with a log style plenum also work very well for turbo set-ups as they are more tunable that regular setups.