Jackson Racing Rotrex Supercharger System Info and Discussion

[OmarGC]

Originally Posted by TrogDor the Burninator

I thought I had read on the Kraftwerks thread that with their kit at 7400 RPM the Rotrex was spinning closer to the max rpm suggested by Rotrex than 90% ...

Is it different on the Jackson Racking kit? I understand the belt systems are different, but at 7400 RPMs with the JR pulley in the kit - is it spinning the Rotrex at 90% of suggested maximum RPMs?

KW kit is aprox 93% and the JR is closer to 90% I believe. Forgot specific percentages

[OmarGC]

Originally Posted by CSG Mike

Stock kits:
JR impeller speed @7400: 7400x1.29x9.49 = 90,591 rpm = 90.6% rated capacity
KW impeller speed @7800: 7800x1.33x9.49 = 98,696 rpm (KW's tune redlines at 7800) = 98.7% rated capacity
Vortech impeller speed @7400 : 41,588 rpm = 83.2% rated capacity

Kits as pictured in graphs:
Jackson Racing: 90.6% - 90,591 rpm (100k max)
Kraftwerks: 93.4% - 93,401 rpm (100k max)
Vortech: 86.0% - 43,022 rpm (50k max)

Bottom %'s are what you should be more focused on.

[CSG David]

Originally Posted by TrogDor the Burninator

I thought I had read on the Kraftwerks thread that with their kit at 7400 RPM the Rotrex was spinning closer to the max rpm suggested by Rotrex than 90% ...

Is it different on the Jackson Racking kit? I understand the belt systems are different, but at 7400 RPMs with the JR pulley in the kit - is it spinning the Rotrex at 90% of suggested maximum RPMs?

It is based on the level of boost and how efficient the system is in producing those boost levels. Think of a balanced package where every component effects each other but needs to be optimized in order to produce an efficient output.

[sklimo]

Look what showed up at my installer!!!! Can't wait for next month!!

[D K]

Rotrex can go to 120k

[CSG Mike]

Hmmmm what do we have here? More information at: http://www.ft86club.com/forums/showthread.php?t=56229

[*LongFella]

So I had an opportunity to experience this kit last night and I'm sold. The whole experience was great! The car has some nice kit, but it was soooo smooth throughout the power band. I was really impressed!

I've been researching for several months, following build threads, reading reviews, and I keep coming back to this kit.

Might be time to pull the trigger and get this bad boy installed! Uncle Sam owes me some money and I know where it's going!

[sklimo]

My kit is going in this weekend!!!!!

[*LongFella]

Question for the experienced folks...

Will the JR SC Tune you get with the kit be thrown off so much so were you need a new tune if you add a bolt one (catted) header?

Reason I ask: I really like the work being put into the ft86sf catted UEL header, but I know I'm 100% on this kit too. Should I get the non-tune sc kit or will jr's tune work with the bolt on catted header?

Sorry for the noob question!

[phun-ky]

Can anybody comment on how much headroom there is in the JR SC kit? Say I have rebuilt the engine to 9:1 or 10:1 compression ratio. Would the kit be able to take an advantage of it?


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[Calum]

Originally Posted by phun-ky

Can anybody comment on how much headroom there is in the JR SC kit? Say I have rebuilt the engine to 9:1 or 10:1 compression ratio. Would the kit be able to take an advantage of it?


Sent from my iPhone using Tapatalk

no

[CSG David]

Originally Posted by *LongFella

Question for the experienced folks...

Will the JR SC Tune you get with the kit be thrown off so much so were you need a new tune if you add a bolt one (catted) header?

Reason I ask: I really like the work being put into the ft86sf catted UEL header, but I know I'm 100% on this kit too. Should I get the non-tune sc kit or will jr's tune work with the bolt on catted header?

Sorry for the noob question!

If you plan to change the OEM emission equipment in any way such as adding a HFC into the system, the tune will not be optimal for the setup. You will need to tune to that particular setup. This goes for the same for any CARB legal supercharger kits on the market. If you plan to change the stock emission systems, go with a custom tuned setup, otherwise CARB configuration can only work with CARB legal setup (OEM).

[*LongFella]

Originally Posted by CSG David

If you plan to change the OEM emission equipment in any way such as adding a HFC into the system, the tune will not be optimal for the setup. You will need to tune to that particular setup. This goes for the same for any CARB legal supercharger kits on the market. If you plan to change the stock emission systems, go with a custom tuned setup, otherwise CARB configuration can only work with CARB legal setup (OEM).

Thank you sir!

I guess I need to find out more details about the cat they plan to use. Apparently, it's a bolt on header that doesn't throw CEL codes or needs a tune to optimize... just bolt on and use... might be nice for us CA folks!

Can't wait for damn Uncle Sam did give me my money! I want my sc kit now!!!!

[CSG Mike]

Originally Posted by *LongFella

Thank you sir!

I guess I need to find out more details about the cat they plan to use. Apparently, it's a bolt on header that doesn't throw CEL codes or needs a tune to optimize... just bolt on and use... might be nice for us CA folks!

Can't wait for damn Uncle Sam did give me my money! I want my sc kit now!!!!

If it changes so little that you can bolt-on and use, then it also means that it changes the parameters so little, that it effectively is equivalent to the stock header.

Remember, we have a MAF based car that works off of volumetric efficiency tables. Volumetric efficiency changes if flow significantly changes, which is what throws off the tune.