51mm throttle body problem???

[Jezza-7]

I replaced my t-piece gasket and noticed this:



Is this normal???

[dub-disaster]

is what normal ??

[cheys03]

Do you mean the smaller hole? Is it on the same side as the idle screw, as it's probably the idle air port.

[Jezza-7]

Yeah the small one is the one im on about. its on the same side as the electrical plug bit so it would be directly under the boost pipe.

I thought the big one was the idle screw as you can see the screw inside.

[cheys03]

Maybe it's a manifold pressure reference (vacuum) hose feed?
Hard to tell without a spare tb for closer inspection. I hope it's that, because the alternative is troubling.

[Jezza-7]

Anyone got a picture to compare?

[vee-dub90]

Daryl in the for sale section is selling a stock one.. would that be of any help?

[Justin14100]

Its the hole that the wide open throttle sensor screws go into, some break through - if they do they get a wick of sealant or chemical metalled over to cover it up.

[RyanC]

mine dont have that just the idle screw hole

[hayesey]

no it can happen when the throttle bodies are ported out to 51mm.  chemical metal is your best bet.