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Discussion Starter #1
After working, cleaning a bit on my 164Q 24v a bit I realized that my car's original (bigger) intake runners have been swopped around for the thinner ones like on the 164 Super's or 2.5's.

What are the different sizes of these intakes on the various different variations of 24v V6's?

Should the 164 Q's be the same as on the 916 Gtv 3.0?

Is there a difference on the different intake plenums?

Any help will be greatly appreciated!
 

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Discussion Starter #2
And I was wondering if its worth while to maybe make up a set and maybe even making it bigger than standard seeing that the car is now a 3.2 and I'm planning on increasing the capacity and doing some serious head work in the not to distant future.
 

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Hopefully someone with a bit more knowledge will be along soon, but as I understand it, the intake runners on the 24V 164s came in two sizes - and were the only change between the standard and "Cloverleaf" specifications. For that reason, the larger "Cloverleaf" runners are very highly sought after because it's a very easy 30bhp improvement straight away, for almost no work! Don't know about the plenums though.
 

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Strange to build the smaller ones on your Q.
I Hope your inletplate is not with the smaller holes in it.
I have a 45mm. set in stock with the right inletplate.

These models had the bigger ones on them:

164 QV 24V
164 Q4

147 GTA
156 GTA

166 3,0 24V
166 3,2 24V

GTV 916 3,0 24V
GTV 916 3,2 24V

Spider 916 3,0 24V
Spider 916 3,2 24V

Lancia Thesis 3,0 24V
Lancia Thesis 3,2 24V

The ones from Lancia are in grey.

Regards,

Erwin
 

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Discussion Starter #5
Cool, thanx guys!
I think one of the previous owners swopped these items with another car's.

Soi its basically just the 164 3.0 Super and the 156 2.5 that had the smaller intake runners.

There aren't any after market / bigger ones available hey?

ALFAHEIDA:How much would a set of these set me back (base price)?
Plus shipment to South Africa?
 

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Cool, thanx guys!
I think one of the previous owners swopped these items with another car's.

Soi its basically just the 164 3.0 Super and the 156 2.5 that had the smaller intake runners.

There aren't any after market / bigger ones available hey?

ALFAHEIDA:How much would a set of these set me back (base price)?
Plus shipment to South Africa?
In Holland it go's for €250,- condition used. ex-shipping. If you are interested I will find out how much the shippingcosts are....

Erwin
 

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Discussion Starter #8
In Holland it go's for €250,- condition used. ex-shipping. If you are interested I will find out how much the shippingcosts are....

Erwin
That is round about how much I thought they might be (not cheap, LOL).
A friend is building a 164 Q motor into his Gtv6 and isn't sure what to do with his intakes,
I'll try and convince him to build something custom ;)
 

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Discussion Starter #9
I'm thinking of getting some bigger intake runner made up at a later stage.
I still want the original size ones just for originality.
My 164 Q is currently a 3.2 so is already slightly larger in capacity than what those intakes are designed for.
Thinking of going from the 45mm (I measured it at 44mm) to say 48mm.
Anybody tried this before?
What you guys think?
 
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