What size throttle body is a b18 Type R?
The stock throttle body on the B18C-powered Integra Type R (DC2) is 60mm in bore. This article explains the official size, why it matters for performance, and common upgrade options for enthusiasts.
Stock configuration and model specifics
The DC2 Integra Type R, which used the B18C engine, arrived with a 60mm throttle body as part of its intake system. This size is consistent with other high-performance B-series variants from the same era and is chosen to balance throttle response with high‑rpm air flow. It’s important to note that this discussion refers to the DC2 Type R; later Type R models in different chassis used different architectures and, in some cases, different engine families.
DC2 Integra Type R specifics
In the DC2 platform, the 60mm throttle body works in concert with the Type R’s high-revving intake and cam setup to deliver strong top-end performance around the 8,000 rpm range. When evaluating parts compatibility or upgrades, 60mm is the baseline for this particular model and era.
Aftermarket upgrades and considerations
For enthusiasts considering a throttle body upgrade, it helps to know typical sizes and the trade-offs involved. The following options are commonly discussed in the community for B-series builds and what to expect with each.
- 62mm throttle bodies – a common, relatively straightforward upgrade that can improve top-end flow with minimal impact on low-end response. Often compatible with minor port matching on the intake manifold.
- 64mm throttle bodies – a popular mid-size option that can boost peak airflow; may require ECU tuning and some intake or manifold port work to maximize gains.
- 66mm throttle bodies – larger upgrade that may necessitate more extensive intake work and careful tuning to preserve throttle response at lower RPMs.
- 68–70mm throttle bodies – high-end NA upgrades used with significant porting and tuning; typically require aftermarket manifolds and ECU remapping to realize gains.
Concluding note: Upgrading the throttle body can improve airflow, but real-world gains depend on supporting modifications such as intake, cam timing, fuel delivery, and engine management. A larger TB without accompanying changes may yield little or no noticeable improvement.
How to identify your throttle body size
To verify the size of your throttle body, inspect the bore diameter stamped on the throttle body itself or measure the internal bore with calipers. If you’re unsure of your vehicle’s exact model year or regional variant, cross-check the chassis code and engine code to confirm the correct baseline size.
Practical considerations for owners
When planning any upgrade, ensure your fuel system and ECU are capable of supporting the chosen TB size. For most street builds on a B18C Type R, staying within a 60–66mm range with proper tuning provides a balanced mix of throttle response and power gains.
Summary
The B18C Integra Type R (DC2) uses a 60mm throttle body as stock equipment. Upgrades to 62–66mm are common among enthusiasts, with larger sizes generally requiring additional tuning and intake/manifold work to be effective. Always verify compatibility with your specific chassis and engine management setup, and plan accompanying modifications for best results.
What size throttle body is a DC5 Type R?
70mm
70mm Throttle Body for Honda K-series/ K20 / Type R/for Integra DC5 w/Sensor.
What size throttle body is a Porsche?
There are 4 major Porsche throttle bodies; the 68mm, which is typically used on 996 Turbos and 986 Boxsters (E-Gas). The 74mm, which is found on almost all naturally aspirated Carreras, Caymans, 987 Boxsters as well as the 997 and 991 Turbos. The 76mm, is used on the 996 GT3, all Cayenne Turbos and all Panmera Turbos.
What car has a J37 throttle body?
Honda/Acura J37 Throttle Body (DBW) - ZDX / MDX / 06-15 Civic Si - JHPUSA.
What is the spec of the b18 Type R?
The Integra Type R is equipped with a 1.8-liter DOHC VTEC in-line 4-cylinder (B18C) engine. In the JDM Type R this engine produces 200 PS (197 hp; 147 kW) at 8,000 rpm, whereas in the US models it produces 195 hp (198 PS; 145 kW) at 8,000 rpm and 130 lb⋅ft (176 N⋅m) of torque at 5,700 rpm.
