Throttle Body Sizing

[KevinBoosted]

Anyone know the sizes of

-1g throttle body
-2g n/a throttle body

ive heard we can use n/a throttle bodies on our turbo 2gs, anyone know what is needed to do this if i decide to go that way?

-kevin

 

[LiquidX]

1g 60mm
2g 52mm
2g NT ??? I don't think it will work

420A TB (4g63 NT TB has this extension as well and would eliminate the TB elbow)

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4g63 TB

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It seems like a different bolt pattern

 

[blcknspo0ln]

the 1G NT throttle body is the same diameter as a 1G turbo TB, except the NT has a partition to clamp a coupler on it.

Keep in mind the 1990 1G turbo TB is also available and it only has 2 vacuum ports. Not important if you aren't running your emisison system, but it is important to some. It is also a 60mm.

a 2G NA TB will not work because it is designed for the 420a intake manifold, not a 4G63 manifold.