Baseline vs T1R Lightweight Pulleys Dyno

Before and after dyno of T1R pulleys for Honda S2000

Really pleased with the T1R pulleys. There was a huge mystery of how much hp and tq these lightweight pieces would make, so I dynoed them just to see. Same tank of fuel, nearly identical weather conditions (which wouldn't matter much anyways since it is corrected.) While the "quantifiable" gains are there, what is gained in terms of engine response is what truly makes them special. These lightweight pulleys only seem to make the S2000 engine more S2000-like, livelier, more responsive. So much that I have absolutely no regrets of going the NA route. Anyways, for all you dyno-queens ;), the dyno:

Blue is OEM, Purple is T1R

(click image to enlarge)

3.1hp and 2.2lb-ft torque gain

Click here for the weights of the OEM vs T1R pulleys.

T1R Crank and Drive Pulleys

T1R lightweight pulleys for Honda S2000

The reduction of rotational mass can help an engine accelerate much more quickly. This becomes more apparent when the reduced mass is further away from the center. This is why adding large heavy rims to your car actually makes it slower! In this case, you're not only adding weight, but also weight further away from the rotation point.

In order to reduce some of the rotational mass from the drivetrain in my 2001 Honda, I decided to purchase the T1R Crankshaft Pulley and 4pc Drive Pulley set.

OEM Crankshaft Pulley (1986g) vs T1R (739g)

Here I have gathered some data on the weights of the T1R and Honda OEM pulleys. It is difficult to estimate how much horsepower it will actually free (though I will try), as there probably isn't much. However, most gains should be in terms of engine response. We'll just have to wait for the results.

(Pics are clickable by the way)


2001 Honda S2000 w/ boltons Baseline dyno. Dyno after T1R pulleys install here.


Water pump: 521g (OEM) vs a much lighter 202g.

323g vs 161g.

#3: 420g vs 202g.

#4: 315g vs 124g.