For a lot of Honda fans, the first serious engine was a B18C. The Integra GS-R and Type R made it famous, and it still ends up in Civics and Integras that were never sold with one. Before one of them meets a turbo, it helps to know one thing about the block: like every B-series, the B18C is an open-deck aluminum casting, and the factory rods and pistons inside it were never asked to carry boost. This B18C turbo build parts list sets out the jobs in the order they happen and the parts we stock for each one, with every fitment note taken straight from the product listings.
The car and the plan behind this list
The list assumes a 1994–2001 Integra GS-R or a 1997–1998 or 2000–2001 Integra Type R, or a swap car running one of those engines, with the engine coming out so it can be built properly for boost. It assumes a machine shop for measuring and any bore or crank work, and a clean bench at home for reinforcement and assembly.
The two engines are close relatives, but they aren't identical, and our listings treat them separately. Manley titles its piston sets by engine: "Integra GSR (B18C1)" and "Integra Type R (B18C5)". Some parts below are listed for both cars; a few are listed for the GS-R only. That split is noted in the table, so check it before you order. Non-VTEC B18A and B18B engines have their own head stud, main stud and rod listings, and they don't share the B18C parts here. Everything listed is in our Honda B18 collection.
From pulled engine to first start: eight jobs in order
- Read the engine code off the block. B18C1 or B18C5 decides which piston and rod bearing listings apply, so confirm it on the engine rather than going by the badge on the car.
- Strip it and measure everything. Take it down to the bare block and crank, then measure journals and bores. Standard-size bearings are for a crank that hasn't been ground undersize; if yours has been ground, you'll need the matching oversize step. Engine Bearing Sizes Explained decodes the labels. Look the block over closely too: reinforcement supports the cylinder walls of a sound block, and EPOXY54 is not a crack repair.
- Choose pistons and head gasket as a pair. The Manley B18C1 page alone offers dish and dome sets at several compression ratios and two bore sizes. Pick the set that matches your measured bore, fuel and boost plan, then pick a head gasket to suit, and have that gasket in your hands before the block is filled.
- Finish the machine work in one trip. Boring, honing and any deck work happen on the bare casting. If you're adding main studs, have them on hand at this stage so any fitting work happens during the same visit.
- Reinforce the open deck. EPOXY54 gives an open-deck block closed-deck strength without machining. It's rated at 21,000 psi compressive strength, its thermal expansion closely matches aluminum, and it's a DIY install in 5 steps. Order the Inline 4 configuration, with Partial Fill if the car sees the street. The pour's last step drills the coolant passages back through the epoxy with your head gasket as the guide; that's the reason job three comes before this one. The B16 / B18 closed deck conversion page has the platform overview.
- Build the short block. After a final clean, fit main bearings, crank and main studs, then the forged rods with new rod bearings, then the pistons. Measure clearances as each part goes in rather than assuming them.
- Clamp the head. Head gasket, head, then the stud kit, torqued to the manufacturer's specification. What Head Studs Fix, What Block Filler Fixes explains why the stud kit and the epoxy both earn a place on this list.
- Fuel, cooling and clutch go in with the engine. A stronger engine making more power needs fuel to match, a radiator that keeps up and a clutch that holds. Fit them as the engine goes back into the car, so the first start is also the first proper test.
Parts we stock for a B18C turbo build
Fitment and specs come from each product listing. Compare the listing's fitment table with your car before you order.
| Stage | Part | What it does for this build | Link |
|---|---|---|---|
| Block | EPOXY54 Aluminum Block Epoxy Kit (Inline 4) | Supports the cylinder tops of the open-deck block; Partial Fill keeps OEM coolant capability, Dry Block is for track use only | View |
| Block | EPOXY54 Install Kit | Wooden stir stick, 5/32" drill bit and squeeze bottle; masking tape and sugar or salt are not included | View |
| Block | ARP B18C1 Main Stud Kit (208-5403) | Listed for the 1994–2001 GS-R and the Type R; goes in with the crank while the block is bare | View |
| Head clamping | ARP B18C1 VTEC 12pt Head Stud Kit (208-4303) | Same GS-R and Type R fitment; studs in place of the factory head bolts | View |
| Rods | Manley B18C Turbo Tuff Pro Series I-Beam rod set (14414-4) | Manley's boost-oriented line, forged from 4340 or 300M vacuum-degassed steel; listed for the GS-R and Type R | View |
| Pistons | Manley B18C1 81mm STD bore 9.0:1 dish set with rings (600000-4) | Platinum Series 2618 alloy forgings; standard bore and a dished crown; listed for the GS-R only | View |
| Rod bearings | ACL B18C VTEC standard size rod bearings (4B1925A-STD) | For an unground crank; fitment table lists the GS-R | View |
| Rod bearings | ACL B18C1/B18C5 0.25mm oversized High Performance rod bearings (4B1925H-.25) | For a crank ground 0.25 mm under; listed for the GS-R and Type R | View |
| Main bearings | ACL B/K-series standard size High Performance main bearings (5M1959H-STD) | One set covering B17A1, B18A1, B18B1, B18C1 and B18C5, plus K20/K24 | View |
| Head gasket | Cometic VTEC 82mm .030" MLS head gasket (C4168-030) | Viton-coated multi-layer steel, no sealant needed; listed for the GS-R and Type R. Confirm the bore against your final machining | View |
| Fuel | Radium Engineering Honda B-Series Fuel Rail | CNC aluminum, anodized for E85, 8AN ORB female ports for a custom fuel system | View |
| Fuel | Radium 94–01 Integra / 92–00 Civic fuel pump hanger (20-0790-00) | In-tank hanger for Walbro GSS342 or AEM 50-1000/1200 pumps | View |
| Fuel | AEM 340LPH E85-compatible in-tank pump kit (50-1220) | Tested to flow 340 lph at 40 psi; 39mm OD with offset inlet; check it against the hanger's pump list | View |
| Cooling | Mishimoto 94–01 Integra manual aluminum radiator | Two-row, 1.65" brazed aluminum core, OEM-fit, 1.3 bar cap included; listed for the GS-R and Type R | View |
| Clutch | OS Giken B18C TS Series twin plate clutch | Twin plate design; fitment table covers the GS-R, Type R and other B-series Integras and Civics | View |
Five ways B18C builds go sideways
- Ordering GS-R parts for a Type R. The Manley piston set and the ACL standard rod bearings above are listed for the GS-R. Type R owners should look for listings that name the B18C5 or the Type R.
- Grabbing a dome piston from the same page. Manley's B18C1 range includes 11.0:1 and 12.5:1 dome sets next to the 9.0:1 dish set. They share a title format, so read the compression ratio before it goes in the cart.
- Treating "B18" as one engine. ARP sells separate B18A1 and B18C1 kits, and Manley sells separate B18A/B and B18C rods. Search by your exact code, not just "B18".
- Buying a pump before the hanger. The Radium hanger names the pumps it was designed around. Choose the hanger first, then a pump that matches it.
- Leaving the main studs until assembly day. They go in with the crank, so the block has to be ready for them. Plan them alongside the machine work, not after.
Want the background first? B18 Block Filler covers reinforcing the B-series block in detail, and Open Deck vs Closed Deck Block explains why the deck design matters once boost is involved. If your Honda runs a K-series instead, our boosted K24 parts list is the one to read.
Start your B18C build
Confirm the code, measure, choose pistons and gasket together, finish the machining, reinforce the block, then assemble. Do it in that order and the engine only comes apart once. Start with EPOXY54 in the Inline 4 configuration, add the Install Kit if you don't already have the tools, and email support@epoxy54.com with your engine code if you'd like a second opinion before you order.
Ready to order? Shop the B16 / B18 build stage by stage, with every part on one page.