BorgWarner S364 Revisited with a .83 Housing

We’ve tested the BorgWarner S364SX-E once again. This time we are running it with a .83 T4 housing. This turbo has the 68mm turbine wheel. This test is the same as our previous tests, an unloaded run, just the weight of the dyno, from 1,300 rpm to 3,200 rpm. After that, we will do a loaded test from 1,800 rpm to 2,800 rpm for this Borg turbo.

BorgWarner S364 Dyno Test One: 1,300rpm to 3,200rpm Unloaded

On the first test it definitely felt a little laggy. It didn’t feel as bad as the S364 in the .91 housing, but still slow compared to the .70 T3 housing. Here is what we saw in the graphs.

Here is what we saw comparing the S364SX-E in the .91 housing, .83 housing, and .70 housing.

Upon comparison they are a lot closer, when based on RPM, the graphs are almost too close to call, but it definitely looks like the .91 carries it the farthest.

We’ll see how they do on a timeline with test two.

BorgWarner S364 Dyno Test Two: 1,800 rpm to 2,800 rpm with 5,500# Load

In our second dyno test of this turbo, we saw that it took about 4.3 seconds to spool up to peak torque.

Compared to the .70, which has been killing everything in spool up, the .83 is a little slower, 3.5 vs 4.3, almost a second slower. However, the .83 carries the power a little longer. That’s to be expected as you go up in turbine size, you move your rpm band to the right.

On max power, the .83 produces about 10 more horsepower than the .70 on the S364SX-E. On average power, the .70 still wins, but if we had carried out the test to 3,500rpm, the .83 may have won. However, in the driving window from 1,800 to 2,800 rpm, the .70 is still probably the way to go.

The .91 is really laggy on this turbo. We don’t recommend it on this turbo, and suggest the .83 or .70.

If you have questions about this test, turbo, or anything else related to your truck, leave a comment here on the blog; hit us up on Facebook, Instagram, or YouTube; or give us a call at 435-962-9555.