[shimi-k20a2]

Here's a really really important question for me.

I have a fully built K20A2, buttom and top.

and had a GT35R, pulled 531hp on 16.4psi of boost on dyno.

Have'nt had the change to check on high boosts and my turbo charger dropped dead.


I bought a Garrett GT4094R with 1.06 AR T4 Divided.

And about to build a new turbo manifold.

Now, my question is, Side mount or Top mount?

Which is better, why is it bettery?


What I know is that top mount has the equal length advantange, which is awesome for spoolup.


I need all the info you have, Please.


Thanks a lot,


Avi.

 

[T-Charged-Civic]

Its actually my car, my friend here posted it for me

Thanks Shimi,


Waiting for replies...

 

[geoscranny84]

Would love to know toooooooooo......

 

[archull]

For larger turbos and ease of working on the car I would have to say a sidemount. The size of the turbo will become an issue in a top mount setup because of firewall clearance. I would say anything larger than say a SC67 I would go with a sidemount. I am not sure which chassis this is going in and the clearance issues you have but on the RSX & EP3 chassis we can't run anything larger than a PT67 without having to notch the firewall.

I know the top mount will have a slight advantage of being able to be a true equal length but the real issue is flow, and the side mounts flow really well, just as well as a equal length top mount.

I personally say go sidemount, but to each their own, the sidemount will also have slightly simpler & shorter intercooler piping than the topmount.

 

[T-Charged-Civic]

For larger turbos and ease of working on the car I would have to say a sidemount. The size of the turbo will become an issue in a top mount setup because of firewall clearance. I would say anything larger than say a SC67 I would go with a sidemount. I am not sure which chassis this is going in and the clearance issues you have but on the RSX & EP3 chassis we can't run anything larger than a PT67 without having to notch the firewall.

I know the top mount will have a slight advantage of being able to be a true equal length but the real issue is flow, and the side mounts flow really well, just as well as a equal length top mount.

I personally say go sidemount, but to each their own, the sidemount will also have slightly simpler & shorter intercooler piping than the topmount.

I have the space for this GT4094R, as a Top mount, if I will side-mount it, than I will have to do some slight changes, which I rather not, BUT! if the flow of the sidemount is much better, and will release some more power than the top mount, than that's a different story.

Don't care about the ease of working on the car, and the clearance is ok, the turbo can sit between the firewall and the motor.

Thanks for the reply

 

[archull]

I have the space for this GT4094R, as a Top mount, if I will side-mount it, than I will have to do some slight changes, which I rather not, BUT! if the flow of the sidemount is much better, and will release some more power than the top mount, than that's a different story.

Don't care about the ease of working on the car, and the clearance is ok, the turbo can sit between the firewall and the motor.

Thanks for the reply

The side mount isn't going to flow any better than an equal length manifold. As long as both manifolds are really free flowing and free of restrictions.

Either way you go you will be fine. No real downsides to either setup realy. For that turbo I would suggest that you go twinscroll to aid in spoolup times and help with boost control because the only downside to equal length or sidemount manifolds are they tend to creep alot and a twinscroll setup with dual wastegates really helps you be able to control that creep.

 

[T-Charged-Civic]

The side mount isn't going to flow any better than an equal length manifold. As long as both manifolds are really free flowing and free of restrictions.

Either way you go you will be fine. No real downsides to either setup realy. For that turbo I would suggest that you go twinscroll to aid in spoolup times and help with boost control because the only downside to equal length or sidemount manifolds are they tend to creep alot and a twinscroll setup with dual wastegates really helps you be able to control that creep.

The Twin Scroll Top Mount manifold is already done. Also the wastegate port, the 3.5" downpipe and the Open dump tube. today finishing the fittings and tomorrow going to the Dyno

 

[lou.]

We run the Full-Race sidemount in our EP3 with a GT4088r twinscroll.
I wish we could run a top mount as i like the position it puts the turbo alot better. I considered running a water/air cooler over the top of the tranny, straight into the TB, possibly mount the turbo so that the comp. housing is facing upward, then rune a huge scoop in the back of the hood.

Nothing bad to say about the Full-Race sidemount, very good manifold.

just my .02