Engine swap
Posted: Mon Jun 22, 2026 12:44 pm
New to the forum so please be gentle!
I am in the market for an E21. I'm thinking about an engine swap if I end up with a 4 cylinder car. Ideally as simple as possible - I'm not after huge power - just something pokey and agile.
I've read some of the articles and from what I can tell, the key elements are engine mounts and wiring (plus exhaust, brakes, etc). What I haven't spotted is anything around fuelling if moving from a NA 315/316 to an injected engine. I assume a more powerful pump would be needed but are significant changes to fuel tank and pipework likely?
Thank you
I am in the market for an E21. I'm thinking about an engine swap if I end up with a 4 cylinder car. Ideally as simple as possible - I'm not after huge power - just something pokey and agile.
I've read some of the articles and from what I can tell, the key elements are engine mounts and wiring (plus exhaust, brakes, etc). What I haven't spotted is anything around fuelling if moving from a NA 315/316 to an injected engine. I assume a more powerful pump would be needed but are significant changes to fuel tank and pipework likely?
Thank you