Cont...... Two of the best mechanics at Honda port and polish the manifolds by hand in order to create a high-rpm engine. Due to the manual process, only 25 engines a day can be created. Our sources have confirmed that their are now 5 mechanics working full time on port and polish. Ed. The intake port was simplified from a dual-port to a single-port -- in hopes of making high-speed air flow better. The stock exhaust piping that varied in width from 48.6mm~50.8mm was upgraded to a full piping with 57.2mm width all the way. Furthermore, the fully stainless-steel header a-pipe employs a 4-2-1 design, but with no sharp edges in the A-pipe when going from 2 to 1. This is a feature that is said to be impossible to do in mass-production. The valve springs are not cylindrical, but flat -- and made of dual-bound springs. This prevents the surging effect at high rpm's, and avoids any interference with the pistons. The cut-off area of the springs are done with the most extreme care. Bigger valves have their advantages, but are heavier. The Type R's valves were redesigned so as to have a bigger cone area, but still be 12% lighter. In overview, over 60 engine-related parts were changed or entirely re-designed for the Type R. We asked Mr. Suga for any other advice on tuning the Type R any further. He replied, "I would prefer that people don't try to further tune the Type R. No, actually, they shouldn't try. Each upgraded part works in perfect harmony, and fiddling with the factory setting will only lead to a decrease in performance." It's probably safe to say that the Type R is a rare, "fully tuned" and "stock" automobile. In order to make exhaust air flow smoother, there are no sharp angles in the header. Furthermore, in order to lighten/strengthen the parts, stainless steel was used.Impossible to do in mass-production, all exhaust piping is welded together with no sharp edges throughout. Also, the piping was upgraded to 57.2mm throughout to increase air flow.The muffler is a multi-chamber design, and does a wonderful job of dissipating sound. However, the funnel-shaped piping in-between the chambers makes it a very free-flowing exhaust. Type R Specs (JDM SPEC) Bore/Stroke Stock Displacement Stock Compression Ratio 11.1 Valve Width See above Plugs #7 Platinum Throttle Body 62mm (+ 2mm of stock) Intake Manifold Single Port Air Intake Width 70mm (+ 5mm of stock) Exhaust Piping 57.2mm (+6.4mm~8.6mm of stock) Tail Pipe Width 76mm (+25.2mm of stock) Mass Gain (compared to GS-R) Stiffer Suspension/High-grip tires +5.500kg LSD +1.500kg Performance Rod & Aluminum Make +3.440kg Body Stiffening Metal Sheets +1.711kg Strengthening Wheel Bolts & Bearings +0.704kg Strengthening Tailgate Area +0.313kg Stiffer Rubber Exhaust Piping Mounts +0.140kg Recaro Seats +6.647kg Front Spoiler +1.034kg Rear Spoiler +2.900kg Miscellaneous +1.160kg Total Increase: +25.049kg Mass Reduction (compared to GS-R) Lighten Flywheel -0.750kg Lighter Engine, Exhaust Pipings -3.329kg Aluminum Radiator -1.350kg Compact Battery -3.000kg Lighter Aluminum Wheels -5.200kg Floor Sheetmetal Removed -10.665kg Dashboard Insulator Removed -3.869kg Fuel Tank Wave Absorber Removed -0.450kg Floor Heat Panel Removed -0.272kg Resin Spare Tire Lid -0.997kg Aluminum Left-Side "Stopper Bracket" -1.300kg MOMO Small-Radius Steering Wheel -0.700kg Rear Wiper Removal -1.851kg Car Stereo & Antenna Removal (optional) -5.665kg Air Conditioner Removal (optional) -18.700kg Miscellaneous -6.919kgTotal Decrease: -65.017kg Best 1/4 E.T.: 14.66 "Bone" stock. "In handling tests, the instantly reacting Integra knocked out a humbling 71.4-mph dash through the slalom, better than every production car MT has tested except the lofty Dodge Viper GTS, Ferrari F355, and Porsche 911 Turbo." - Motor Trend, Sep 1997 "Weighing in at just 2600 pounds, 450 pounds lighter than the Prelude SH tested, the Type R accelerates like a midget musclecar on amphetamines. The trip from 0 to 60 takes only 6.6 seconds and the quarter mile is ravenously digested in just 15.1 seconds at 93.8 mph."- Motor Trend, Sep 1997 "The Type-R represents one of the best performance values on the market today and serves as further affirmation of Honda/Acura's engineering prowess. In addition to building one of the best rear-drive sports cars (the NSX), Acura now has the distinction of building one of the very best front-drive sports cars: the Integra Type-R." - Motor Trend, Mar 1997 "Rewriting the rules of automotive performance, the Type R makes no excuses for its extraneous rear seats, its traditionally suspect drivetrain layout, or its quasi-utilitarian styling. Despite these so-called "handicaps", the Type R proudly stands out from the crown as a brutally effective weapon of single-minded purposefulness. The Type R was a giant killer on the track, taking on cars much more powerful and expensive. By all appearances, the Type R was untouchable." - Sport Compact Car, April 1999 |
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