Whats the max size i can bore out from the stock TB off the 06 euro ? , will porting out the In Manifold make a hug difference aswell ?
thanks guys
If your throttle body is 60mm, the most you can safely bore it to is between 63-64mm.
If you are running a bored/larger diametre throttle body it is really important that the inlet of the manifold is matched to the throttle body diametre. Since a perfect port match is almost impossible to achieve, it is better for the opening of the intake manifold to be slightly larger than throttle body itself. This will ensure there is no ledge or lip to disrupt the airflow.
If your throttle body is 60mm, the most you can safely bore it to is between 63-64mm.
If you are running a bored/larger diametre throttle body it is really important that the inlet of the manifold is matched to the throttle body diametre. Since a perfect port match is almost impossible to achieve, it is better for the opening of the intake manifold to be slightly larger than throttle body itself. This will ensure there is no ledge or lip to disrupt the airflow.
i thought so ,
kool thanks yeah ive opened up the TB and found out that tb and the IM were 60mm i think ill leave as it is cuz did sum research abt the tb porting if not done properly idle problem will occurs
i thought so ,
kool thanks yeah ive opened up the TB and found out that tb and the IM were 60mm i think ill leave as it is cuz did sum research abt the tb porting if not done properly idle problem will occurs
cheers
Yep they are 60mm. You're right, it's really important to bore the throttle body properly. The intake manifold is less important to get perfect.
I recently bought a 64mm 2006 TSX throttle body, and just finished port matching the opening of the intake manifold to match. I might post some pictures if I get a chance
the rear side of the 2006 tsx throttle body that connects to the intake manifold. You can see some marks left by the 2006 tsx throttle body gasket. For this throttle body to fit on an 03-05 car you'll need an 03-05 throttle body gasket. You can see why in the picutres below.
I ported the opening to about 64.5mm. It's important to mount the throttle body after porting to ensure there is no "lip" or "ledge" that will disrupt the airflow. You should also try to be conservative with the amount of material you remove. While there is a lot of material for the first 10mm but you have less to work with beyond that point.
it's also important to blend your port so there is a smooth transition into the intake manifold. There should be no sudden change in diametre and no ledges or lips.
I took my time doing this and removed small amounts of material at a time. It's a good idea to take it steady if you're new to it. It took me an hour or two using a die grinder and a carbide bur that looks like this:
you can also use a flapping sanding wheel on the end of a drill to do some finishing touches and smooth things off a bit:
Very interesting thanks for the photos and tips just a question about removing the electronics from the TB, any precautions i have to take note of when removing these?? your help would be much appreciated
I only ported the intake manifold and didn't touch the throttle body. So there was no need to remove any of the electronics from the throttle body.
The 2006 TSX throttle body is 64mm which is 4mm larger than the 60mm accord euro throttle body. So basically I just removed a 2mm thick circle of material from the intake manifold.
The opening of the manifold needs to be the same size or larger than the throttle body otherwise the air will hit a ledge.
Good to see you got it all done Chris! That guy's a pretty good seller eh?
I'm really excited for yours results when all this gets fitted and tuned. Lucky for you you'll only need to swap the 2nd half of the RBB to that ported version, the part that connects to the head is a POS.
Originally Posted by felixd
Bookmarks