Jackson Racing SC Kit - C30-94 Rotrex Supercharger High Boost Pulley Release

[350z]

This^^^. I'm just waiting on the tune to arrive so I can install the rest of the stuff (injectors, pulley, pump). Combine the before and after results against my stock 350z. My videos will be just straight line races as there are no turning tracks around where I live.

[Superstar]

Originally Posted by Sleepless

I actually don't care about "otherwise stock", what I'm interested in is the same car with standard pulley compared to same car with upgraded pulley. I assumed you would have that for your car.

Hopefully someone that does the upgrade will post lap times before and after the upgrade. I will certainly post my before and after JRSC lap times very soon, in another thread of course

I really don't understand these types of request. +50-70 whp will always be faster than what you currently have and it's quantified for you in terms of power... I'd rather see laptimes for major suspension components because otherwise there is no way to quantify how good it is...

[Irace86]

Originally Posted by Superstar

I really don't understand these types of request. +50-70 whp will always be faster than what you currently have and it's quantified for you in terms of power... I'd rather see laptimes for major suspension components because otherwise there is no way to quantify how good it is...

Just giving a qualifier, andI dont think if it applies here, but more hp doesnt always translate into better area under the curve or better lap times. For instance, adding a larger turbo might equate to more peak hp but too much lag could hurt performance. Now in this case, the idea is adding more boost, but if it wasnt added equally across the rpms, maybe progressively, then again, peak hp could be higher, but not substantially across the rpms to sometimes justify reliability or cost. Again, not saying that is the case here, but I think that is where he is coming from.

[industrial]

Originally Posted by Irace86

Just giving a qualifier, andI dont think if it applies here, but more hp doesnt always translate into better area under the curve or better lap times. For instance, adding a larger turbo might equate to more peak hp but too much lag could hurt performance. Now in this case, the idea is adding more boost, but if it wasnt added equally across the rpms, maybe progressively, then again, peak hp could be higher, but not substantially across the rpms to sometimes justify reliability or cost. Again, not saying that is the case here, but I think that is where he is coming from.

But this is a pulley driven supercharger. Everything you said doesn't apply. A HBP on the same supercharger will give you more power everywhere. It does add boost equally across the entire RPM range. Why doesn't it come like this? Because with a HBP you have to really address fueling issues with injectors, pump, and probably a flex fuel solution.

[Sleepless]

Originally Posted by Superstar

I really don't understand these types of request. +50-70 whp will always be faster than what you currently have and it's quantified for you in terms of power... I'd rather see laptimes for major suspension components because otherwise there is no way to quantify how good it is...

This thread is about the pulley upgrade so I think many of us would like to see some real world data just like you (and I) like to see suspension upgrade comparisons.

So, I don't understand what there is to understand or not about "these types of requests". Why is a suspension comparison a "better" request than a "power" comparison. It's fun and useful data.

Plus, I think a lot of people would be surprised how little difference more power makes as the percentage gain goes down. So, for me, real world power comparisons are very useful in determining where/when the cost benefit tapers off to the "not interested" point.

[Irace86]

Originally Posted by industrial

But this is a pulley driven supercharger. Everything you said doesn't apply. A HBP on the same supercharger will give you more power everywhere. It does add boost equally across the entire RPM range. Why doesn't it come like this? Because with a HBP you have to really address fueling issues with injectors, pump, and probably a flex fuel solution.

Exactly, but you said 50-75whp will always be faster, and it won't. In this case, yes, it is faster, but maybe the guy didn't know why this case is different.

[DaiTT500]

Originally Posted by 350z

This^^^. I'm just waiting on the tune to arrive so I can install the rest of the stuff (injectors, pulley, pump). Combine the before and after results against my stock 350z. My videos will be just straight line races as there are no turning tracks around where I live.

Where do you live?

[CSG Mike]

Originally Posted by DaiTT500

Where do you live?

Daytona is too far for him.

[Irace86]

Originally Posted by Sleepless

This thread is about the pulley upgrade so I think many of us would like to see some real world data just like you (and I) like to see suspension upgrade comparisons.

So, I don't understand what there is to understand or not about "these types of requests". Why is a suspension comparison a "better" request than a "power" comparison. It's fun and useful data.

Plus, I think a lot of people would be surprised how little difference more power makes as the percentage gain goes down. So, for me, real world power comparisons are very useful in determining where/when the cost benefit tapers off to the "not interested" point.

I think for many people, even car enthusiasts, they would be shocked to learn that a set of quality tires can shave seconds off lap times, or just pads and stainless lines can improve braking as much as it does. Most people don't have to be told more power means better performance, but they do for other mods like suspension.

In this case, the pulley is a no brainer. Sounds like most people would be getting double the power that the original kit adds with half to a third the cost. And at 350whp the power isn't so high that traction would be an issue. So a similar increase in performance proportional to the increases gained from the base kit is likely, unless someone couldn't use the power because of ability or because the track is a slower track (mostly twisties). Track times would be cool, but the results wouldn't be surprising is my guess.

[DaiTT500]

Originally Posted by CSG Mike

Daytona is too far for him.

Or maybe sebring or hempstead?

[350z]

I live in the middle of Texas where pretty much all tracks/roads are straight, Thats most likely the only races to be had unless a parking lot thing pops up.

But I guess finding a comparable car is too hard for you CSGmike? =)

[DaiTT500]

Originally Posted by 350z

I live in the middle of Texas where pretty much all tracks/roads are straight, Thats most likely the only races to be had unless a parking lot thing pops up.

But I guess finding a comparable car is too hard for you CSGmike? =)

The middle of texas like dallas or west texas?

[350z]

Couple hours west of Dallas

[CSG Mike]

Originally Posted by 350z

I live in the middle of Texas where pretty much all tracks/roads are straight, Thats most likely the only races to be had unless a parking lot thing pops up.

But I guess finding a comparable car is too hard for you CSGmike? =)

Too large of a challenge. Sorry.