"How much do I need?" is the question we answer most. The short version: a Partial Fill only fills the top 3/4" of the water jacket, so the amount depends mostly on how many cylinders you have. A Dry Block fills the whole jacket and takes roughly double the Partial Fill amount. Find your engine below, then order the kit listed. Kits come in 300 ml and 540 ml sizes, and V engines get one container per bank.
Partial Fill volume by engine layout
| Engine layout | Partial Fill volume | Kit to order |
|---|---|---|
| Inline 3 and inline 4 | 300 ml | Inline 4 / Partial Fill (or Inline 3) |
| Inline 5 and inline 6 | 540 ml | Inline 6 / Partial Fill (or Inline 5) |
| Flat 4 (Subaru boxer) | 540 ml | Flat 4 / Partial Fill |
| V6 | 2 × 300 ml (one per bank) | V6 / Partial Fill |
| V8 | 2 × 540 ml (one per bank) | V8 / Partial Fill |
| V10 | 2 × 540 ml (one per bank) | V10 / Partial Fill |
Flat 6, cylinder heads and small-displacement engines such as motorcycles: email support@epoxy54.com with the engine code and we will confirm the amount.
Popular engines and the kit they take
| Engine | Layout | Partial Fill | Platform guide |
|---|---|---|---|
| BMW N54, N55 | Inline 6 | 540 ml | N54 kit · N54/N55 guide |
| Honda K20, K24 | Inline 4 | 300 ml | K20/K24 guide |
| Honda B16, B18, B20 | Inline 4 | 300 ml | B16/B18 guide |
| Honda F20C, F22C (S2000) | Inline 4 | 300 ml | S2000 guide |
| Honda D16, H22, F22 | Inline 4 | 300 ml | Inline 4 kit |
| Subaru EJ257, EJ255, EJ205 | Flat 4 | 540 ml | EJ257 guide |
| Subaru FA20 (BRZ, 86) | Flat 4 | 540 ml | FA20 guide |
| Mitsubishi 4B11T (Evo X) | Inline 4 | 300 ml | 4B11T guide |
| Ford 2.3 EcoBoost | Inline 4 | 300 ml | 2.3 EcoBoost guide |
| Mini N14, N18 | Inline 4 | 300 ml | Inline 4 kit |
| Volvo T5 | Inline 5 | 540 ml | Inline 5 kit |
| Nissan VQ35 (350Z, G35) | V6 | 2 × 300 ml | VQ35 guide |
| GM LS, LSX (aluminum) | V8 | 2 × 540 ml | LS guide |
Subaru EJ note: customer reports show EJ blocks often take less than the full 540 ml. That is normal. Mix the whole kit anyway (see below) and you will have some left over.
Dry Block (full fill) kit sizes
A Dry Block fills the entire water jacket, runs no coolant through the block, and is for track use only. Jacket volume varies with bore size, jacket depth and block design, so measure first: seal the water ports, fill the jackets with a measured amount of water, and that number is how much epoxy you need. Our standard Dry Block sizes are a starting point:
| Engine layout | Dry Block kit |
|---|---|
| Inline 3 | 540 ml |
| Inline 4 | 600 ml |
| Inline 5, inline 6 | 1080 ml |
| Flat 4 | 1080 ml |
| Flat 6 | 1200 ml |
| V6 | 2 × 600 ml (one per bank) |
| V8 | 2 × 1080 ml (one per bank) |
| V10 | 2 × 1200 ml (one per bank) |
| Cylinder head | 1080 ml |
| Small displacement (e.g. motorcycles) | 540 ml |
Big cast iron V8s, such as the 7.3L Godzilla or a 7.3L PowerStroke, use the Cast Iron Block Epoxy Kit. Step-by-step measuring is in How to measure the right amount for a Dry Block.
When your number falls between sizes: combine kits
The Universal 300 ml and Universal 540 ml kits can be combined to reach any volume. Always round up. For example, a block that measures 700 ml takes a 540 ml kit plus a 300 ml kit, 840 ml in total.
Two rules that matter more than the exact number
- Never split a kit. Mix all of Part A with all of Part B. Pouring part of a batch throws off the mix ratio, which can make the epoxy overheat as it sets and leaves you short on coverage. Leftover mixed epoxy is fine; a short pour is not.
- Stop 0.5 mm below the deck. The fill should finish just under the deck surface so the head gasket seals on the block. The full procedure is in the installation guide, and the Install Kit has the 5/32" drill bit, pour bottle and stir stick.
Not sure which layout or fill you need?
Email support@epoxy54.com or call (604) 809-7398 with two things: your engine code, and whether you want a Partial Fill (street, daily, street/track) or a Dry Block (track only). That is all we need to point you to the right kit. Common concerns are answered on our EPOXY54 problems and concerns page.