A couple of years ago I was in Japan at my friend’s house, on the outskirt of Osaka. My trip was scheduled to last 2 weeks before coming back to the US. For those of you that have been to Japan before, you know how short two weeks are. Most people would schedule in advance where to go, what to visit, hang out with friends, sightseeing, tuning shops to check out, or business-related meetings to attend; not me.
Over the past decade I have visited Japan several times, scheduling hardly anything ahead; this trip was no different. While my trip was supposed to last only two weeks, I ended up staying in Japan for five weeks; so why rush? I did manage though to visit few coveted tuning shops; one of them being J’s Racing.
J’s Racing is located on the far west side of Ibaraki-ken, about 20 minutes north of Osaka. Like many other Japanese tuning shops, it is very small, and easy to miss. Upon my arrival I was more excited to meet Umemoto san, (owner and president of the company) than checking out his cars. Although I must say the cars he had at his facility were built with incredible attention to details.
One of the car that caught my attention at the shop was this Hot Version Queen Honda Fit. This Fit as many of you know, went through a lot of modifications.
This proven K24/20 engine features Toda ITB’s, Toda connecting rod, a knife-edged S2000 crankshaft, and J’s Racing 13.X:1 pistons among other things.
While I was talking to Umemoto san, I knew this Fit was capable of making close to 320 hp, so I asked him about the exact compression ratio; he smiled and said: “juu san ten dou…” (juu san means “13″ in Japanese, while ten means “.” and dou means “something”)…..so I laughed. He clearly didn’t want to reveal the exact number. We can speculate all we want about the exact compression, but at the end it doesn’t matter. Japanese are also fortunate to have higher octane fuel at the local gas stations. For us using race fuel would be mandatory with that compression ratio.
In the picture above you will also notice the custom engine mounts with white inserts. Those white inserts are made of Delrin. Generally you would see aftermarket engine mounts equipped with polyurethane bushings. J’s Racing did not want to use polyurethane because it would flex too much for their application. While solid billet aluminium mounts would cause a lot of vibration on the chassis and on the transmission. Thus the Delrin choice.
My first reaction when I saw the 10 point roll cage in this Fit was: “why welded so low?” The main loop, along with the a-pillar tubing have been welded very low in the car. Umemoto san explained that since the Fit is a high vehicle in standard trim (measuring about 60 inches of height), he wanted to keep the center of gravity as low as possible, thus welding the cage low enough to keep the driver safe while adding stiffness to the chassis. As you can see from the picture, there are gussets everywhere; even on the roof between the a-pillar and the b-pillar. As you notice the doors have been gutted only in the rear, while the front ones have been left alone. I’m sure that a set of carbon fiber doors would help to trim down the weight of this Fit even further.
This Fit also sports lexan windows all around except the front windshield; while a Recaro SPG seat and Takata harnesses are all you’ll find in the interior.
On the outside aside from the front flares, the Fit wears 17 inches Volk TE37 all around wrapped with Advan 048 tires: in the front 235 width, and in the rear 205 width. Brembo 4 pot calipers are found up front, using Seidouya N1 brake pads, while the rear drum brakes have been swapped with Brembo disk brakes mated with Seidouya N1 pads as well.
The Fit also uses Crux coilovers to drop the static height, and as seen in the picture, the bumper has been cut quite a bit to reduce drag while it features a one-off carbon diffuser to help the Fit with the not-so good aerodynamic. If you look closely, you can see the one-off titanium exhaust system and its tail pipe cut flush with the diffuser to help create less drag under the car.
That’s all I have for now. I did however take more pictures about other cars while at J’s Racing. I will make sure to cover them in the future.
I am sorry for the lengthy article.