Jackson Racing Supercharger Owners Thread

[CSG Mike]

Originally Posted by HUNTERANGEL121

S2000 data, there's a thread on s2ki, but have you guys published FRS FD data?

There's not anything to publish because we haven't found any FD that significantly speeds up the car on the track that we drive (Laguna Seca, Thunderhill, Sonoma, Willow Springs, Streets of Willow, Chuckwalla, Buttonwillow, Autoclub).

We are at the track close to 50 weekends a year.

If anything, we'll want taller gears with more power. There's a reason the ultra high performance cars generally have longer gears...

[M23]

Originally Posted by CSG David

I can assure you at this point of time, the OEM Final Drive is the most versatile. Is it the best? No, but it is a balanced setup.

Yeah, I guess Toyota engineers would know what really is the best balance (especially compared to some internet nerd couch racer, like myself, lol).

This seems to be popular for racers/drifters though:
http://www.wintersperformance.com

[CSG David]

Originally Posted by M23

Yeah, I guess Toyota engineers would know what really is the best balance (especially compared to some internet nerd couch racer, like myself, lol).

This seems to be popular for racers/drifters though:
http://www.wintersperformance.com

W2W and drifting is a different story. The acceleration and braking is totally different from the time attack or HPDE scene. The difference is being to pull on someone mid corner, corner exit, or midway through the straight fighting through a pack of cars. The gearing has to be appropriate for the track and competition you're working with. Too tall and you fall out of the powerband to stay ahead in a massive pack...too short and you'll end up shifting mid corner or run out of RPMs just before the braking point.

[M23]

Yeah..sounds very complex and like a lot of work, testing and driving to figure out the best gears per track per driver/car. I guess that's a whole diff educational and in-depth topic.

Btw... how does a 4.56 FRS MT compare to S2k?

Never had an S2k..but I did install a jdm gear cluster in my trans housing in my EG back in the day (it was cheaper to ship the internal parts vs an entire tranny from Japan). I forget the exact specs..I just remember I loved it and it made a huge difference. Performance Hondas always did have nice and aggressive gearing

[CSG David]

Originally Posted by M23

Yeah..sounds very complex and like a lot of work, testing and driving to figure out the best gears per track per driver/car. I guess that's a whole diff educational and in-depth topic.

Btw... how does a 4.56 FRS MT compare to S2k?

Never had an S2k..but I did install a jdm gear cluster in my trans housing in my EG back in the day (it was cheaper to ship the internal parts vs an entire tranny from Japan). I forget the exact specs..I just remember I loved it and it made a huge difference. Performance Hondas always did have nice and aggressive gearing

I wish the FRS had more RPMs to work with from the factory, but can't complain. I drove a 4.56 MT with full bolt-ons and shady tune. The car runs out of RPMS and it's, frankly, really annoying because I found myself shifting way too much. That client's car needed another 500 RPMs to work off of.

[wootwoot]

Originally Posted by CSG Mike

There's not anything to publish because we haven't found any FD that significantly speeds up the car on the track that we drive (Laguna Seca, Thunderhill, Sonoma, Willow Springs, Streets of Willow, Chuckwalla, Buttonwillow, Autoclub).

We are at the track close to 50 weekends a year.

If anything, we'll want taller gears with more power. There's a reason the ultra high performance cars generally have longer gears...

I understand why you would want stock or taller gearing for a supercharged or turbocharged FRS. If you were still NA would you keep the stock final drive? Or would you upgrade it to something shorter?

[M23]

Originally Posted by CSG David

I wish the FRS had more RPMs to work with from the factory, but can't complain. I drove a 4.56 MT with full bolt-ons and shady tune. The car runs out of RPMS and it's, frankly, really annoying because I found myself shifting way too much. That client's car needed another 500 RPMs to work off of.

Ya huh. I can see how short gears would give 8-9k rpm engines/cars more advantage, and maybe silly for low revving Subaru motors. Staying that high up in Honda 8-9k engines seem to last much longer in the peak range and climb slower putting that peak range to more use.

Gotta love high revving Hondas.

[CSG David]

Originally Posted by M23

Ya huh. I can see how short gears would give 8-9k rpm engines/cars more advantage, and maybe silly for low revving Subaru motors. Staying that high up in Honda 8-9k engines seem to last much longer in the peak range and climb slower putting that peak range to more use.

Gotta love high revving Hondas.

You cannot compare the companies nor the engines. The Honda core engine is developed to last quite a bit longer than most engines. We're talking about endurance testing. Those numbers are classified, but we will add that they are "over-engineered" per today's standards.

The FA20/4USGE revs fairly well for today's standards as well. How many engines rev up to 7400RPM these days? Not many if you were to really look at the entire spectrum of today's cars.

In terms of gearing, it's down to budget, preference, and application. For us, it's pretty useless.

[M23]

Btw...generally, do all these ecutek tunes for fa20's currently, keep same redline/limiter, or do they raise it?

If, no, is raising redline too unsafe on a stock engine/internals/valvetrain?

I notice in a lot of dyno charts, the power keeps climbing and it really isn't falling off (until of course, the limiter kicks in). Why not raise the rev-limiter 500rpm or a little more?

[whataboutbob]

Originally Posted by CSG David

If you supply us with an unlimited amount of cash, we can do that testing for you.

On another note, we have data on multiple Final Drive setups on the S2000 ranging from 3.9 to 4.77 and not as much data on 4.1 to 4.67 data on the FRS/BRZ. I can assure you at this point of time, the OEM Final Drive is the most versatile. Is it the best? No, but it is a balanced setup. If you're on AT, however, just change the FD to something really aggressive.

Cusco 4.556 in my SC'd AT is very nice.

[M23]

Originally Posted by wootwoot

I understand why you would want stock or taller gearing for a supercharged or turbocharged FRS. If you were still NA would you keep the stock final drive? Or would you upgrade it to something shorter?

I don't think you're going to get the answer you're looking for from them. They're obviously against and not fans of shorter FDs.

[CSG David]

Originally Posted by wootwoot

I understand why you would want stock or taller gearing for a supercharged or turbocharged FRS. If you were still NA would you keep the stock final drive? Or would you upgrade it to something shorter?

If pure NA, you'll need to identify the exact purpose. You'll need to find out what gear you're in, what engine speed, what speed you're going, etc. All those play a role in making the right choice. Like I said, I drove a MT with a 4.56 and I spent way too much time shifting. 2nd gear was too short for certain corners and 3rd gear was too long because the powerband wasn't utilized correctly. Maybe on a different track it might be better.

[M23]

I guess it may or may not be a waste of money then..if the goal would be faster track times; with being more a chance of being a waste of money (since the factory FD and gearing is a great balance). And I guess any self proclaimed, or perhaps delusion, of it being a faster car after having it, may be just on the street as a dd or drag race.

Sure doesn't make the decision of getting a 4.56 any easier, lol.

I guess it isn't too bad not getting one. Afterall, it's probably one of the biggest hassles and downtime of installing (second only to engine/tranny rebuilds and swaps), not to mention $1k+ installed.

I guess that $1k could be better spent on something else.

"I guess"

[M23]

Btw... what do you, CSG, or anybody else, think of the Nameless catback exhausts?

I'm not really keen and hip to all the myriad of exh choices currently available out there - Since I like stock exhaust and quietness and was really planning to keep oem stock exh forever and ever, lol. But, I recently looked at and noticed the Nameless exh. And it appears very well thought out and designed, with very nice bends and angles that look like they flow super well. The youtube videos looks and sounds awesome too. The design reminds me of an expensive exhaust for european sports cars.

Anybody have the Nameless exhaust on their JRSC car, or other SC car, or even NA?

You think the 2.5" version is good enough for the JRSC for a little extra power? The 3" is nice...but I'm sure it'll be way too loud.