Hello!

If you have the Y7 is it worth it to swap with the Y8?
I tried searching and all I could find are how to do it or things that you'll need.
I want to know if in fact there's a difference in doing this - power wise.
May it be it HP or torque.
And I'm talking about dyno proven and not "butt-dyno".

Thanks in advance.

 

If you look at the numbers of the Y7 vs the Y4, there must be something there, since the only difference between the two engines are the manifolds.

I just looked up the D16Y4 P/N's for the block, cam and internals, they are the same. However the IM P/N is the same as the Y8.

The Y4 has 120 hp and 106 ft lbs tq with only difference being the manifolds

 

I just checked what you said and you're absolutely right.
The only difference is the manifold.
So I guess it's worth it.
Thanks man!

 

I was curious to see myself what the difference was, so I checked all the engine P/N's yesterday.
The Y7 vs Y4 share same block, head, valves, pistons, crank, etc. The only difference is the Intake manifold which is same as Y8 and the Exhaust manifold which is a P/N native to Europe , but appearance wise looks to be very close to the Y8.

 

Different ECUs also

 

I have a y8 manifold on a y7 block if you do swap be sure to keep the y7 injectors / throttle body or your gonna get terrible gas mileage like 22 all day long

 

y8 intake on mine made a big difference