VN Series 2 - VR Bellmouth

[sik vt]

y bother its a waste off time if ya want power get sum boost up it

[toriia123]

haha vr vp have same motor?

[holdennz]

I've been reading the Buick V6 performance thread and was keen to see if my car's bellmouth had been removed. Sure enough it had. I get wheelspin in economy mode whenever I floor it haha.

Previous owner must've taken it off I guess.

[aussiesport]

only got a chip in mine and it smokes the rears on launch at will !!!!!!

[MR_JORDZ]

I had fun doing this mod myself,so good yet so easy

[hod_gy]

Sooooooo can someone link me how a thread that shows you how to step by step remove a bellmouth?

[Reecey06]

will removing the bellmouth work on the vs II motor??
cheers Reece

[Bz Kn33z]

will removing the bellmouth work on the vs II motor??
cheers Reece

No this is for the Buicks not for a VS commodore, different motors.

[GothicKidd]

Sorry for thread dig-ish..
but I removed mine and cleaned my throttle body and etc.. Made no real difference, Barely noticeable IMO.. It wants to rev more but nothing else IMO.
Ive had no problems with Idling.. runs purfect TBH..

[89vn_Jai]

what do you mean it won't increase / decrease power, after removing it. It's a restriction on the air flow. If you cover half your throttle body with gaffer tape are you saying it won't make a difference.... Of course it will.

fair enough the removal of it may cause the rear two cylinders to lean out a little because the length of the bell mouth puts the incoming air into the centre of the manifold distributing it evenly. hence better idle, but who drives a car on idle???

take the damn thing out, common sense says that car manufacturers create engines to be fuel economic and drivability. If your after power remove it thats all their is to it

Just remember you can have the biggest and best air intake up to the manifold but if the rest is of the engine is standard the next major restriction would be at the valves. The time they are open, length they are pushed down ect.

I am not saying removing the bellmouth 'wouldnt' increase power, I am just saying the standard engine's valves would only allow a certain amount of air in anyway.

[Commo_Carl]

Just remember you can have the biggest and best air intake up to the manifold but if the rest is of the engine is standard the next major restriction would be at the valves. The time they are open, length they are pushed down ect.

I am not saying removing the bellmouth 'wouldnt' increase power, I am just saying the standard engine's valves would only allow a certain amount of air in anyway.

Agreed 100% my friend. I have been debating this for a year or two now, still haven't done it. Probably not worth doing so. Just get a high flowing exhaust, air intake and 70mm throttle body, and also a good custom tune or a performance memcal from ebay. Will boost power as much as you really can

[Majestic1]

Ide just like to say i pulled my one out of my VR and i think no extra power maybe a bit more torque (my VR has LSD and k&n panel filter with Cai) so not to sure but must say the gears change way better for sure