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Plazmaman Plenum & 72mm Tb

a31rb25

By a31rb25,
in Engines & Forced Induction

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a31rb25 Community Regular

a31rb25

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Posted (edited)

Has anybody tried fitting an A32/A33 Maxima throttle body (72mm) to a Plazmaman RB25 plenum?

I'm interested to know if this works as $500 for a billet 72mm TB is a joke. I know there's other's available from CPC, OBX etc via the net just want to know if this works first as it could be one of those handy money savers.

Edited by a31rb25
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https://www.sau.com.au/forums/topic/300862-plazmaman-plenum-72mm-tb/
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Cartman Rising Star

Cartman

Posted
Posted
Has anybody tried fitting an A32/A33 Maxima throttle body (72mm) to a Plazmaman RB25 plenum?

I'm interested to know if this works as $500 for a billet 72mm TB is a joke. I know there's other's available from CPC, OBX etc via the net just want to know if this works first as it could be one of those handy money savers.

whats the bolt hole spacing on them? could be another option for the greddy plenum aswell

a31rb25 Community Regular

a31rb25

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But the Plazmaman throttle bodies look sexy as!

They'd damn well want to as well for the money. Whilst I agree they look good, they're not worth paying for fashion over function. My car is a basic drifter that doesn't need to look good, just needs to work well.

Roy Grand Master

Roy

Posted
Posted

How big is the std? In the new year with my plenum on i was going to look to mill out a stocker 4-5mm, i think std they may be about 65mm. Was also thinking about trying one of the twin type throttles of the L98/LT1 350 Chev as they are meant to give sharper throttle response, but will have to measure up the flanges.

vemp_0912_03_z%20professional_products_lt1_throttle_body%20gullet.jpg

a31rb25 Community Regular

a31rb25

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Stock is 60mm. Plazmaman recommended a 72mm TB, saying that an 80mm or 90mm (50%) increase in size would lose some of the responsiveness.

This may all be a sales pitch from them to sell a part, but if there's merit in what they say then I don't see the harm in trying to find a cheaper alternative that might cost $200 (incl machining an adapter plate) instead of $500.

Lukas 33 Proficient

Lukas 33

Posted
Posted
Hmm interesting, they recommended me the 80mm one for my setup.

Roy, how on earth are you going to make something like that fit?

HAHAHA Just put your cooler piping in the vice and sqaush it to size :) Simple :)

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