Engine Conversions

Nissan CA18 & SR20 turbo conversions
Here are two conversions we have carried out on MK1s. These two engines are found in the popular S13 and S14 Silvia’s. You can get these engines in other Nissan cars but are sometimes FWD version and/or non turbo, although we have fitted NA versions to MK1s also.

If you are considering an engine conversion, you may need to also budget for a diff change as we have found from experience that standard Cortina diffs are not up to the extra power. Here you can find examples of diffs we have used in this situation.

A list of other engine swaps can be found on our tech page.  We don’t perform these conversions any more, but are happy to provide advice for your project.  The FORUM is also a wealth of information and a good contact point for many others that have performed or are currently performing engine conversions.

Nissan CA18det

The CA18det is our favorite conversion into Mk1’s.  The engine is compact and so relatively easy to work on in the engine bay (once intercooler piping is removed), is front sump, easily available parts etc.  As you can see from our other cars running CA’s, there is plenty of scope for big, reliable power – certainly enough to keep you entertained in a Mk1.
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Nissan SR20det

We are not quite as much of a fan of the SR20 conversion for several reasons.  Cost and physical size being two of them.  Regardless, they are reliable and make great power with minimal effort, with the added bonus of a bit more low end torque from the larger capacity of the engine.
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CA18 & SR20 common fitting changes
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Mazda rotary conversion
These images are from Cortina enthusiasts in New Zealand who have a very nice green metallic MK1 wagon (estate) featured in upcoming issue of Fast Fours. You can find further images of this car in the gallery. We thank them for their contribution and help 🙂