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LT5 and optispark

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Old Jan 13, 2022 | 01:57 PM
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Default LT5 and optispark

I'm developing an interest in buying a C4 ZR1. Does the Lotus built engine have the same optispark issues as the LT4? Thanks.
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Old Jan 13, 2022 | 02:08 PM
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No Optispark, completely different engine.
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Old Jan 13, 2022 | 02:11 PM
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Nope, totally different.
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Old Jan 14, 2022 | 08:31 AM
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LT5 ignition is a distributorless system.

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SJW
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Old Jan 16, 2022 | 07:00 PM
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As said, it is totally different: a entirely digital ignition system (DIS) module bolted to the under side of the plenum, which is controlled by the ECU. The coils (4) are located under the plenum as well; each firing two plugs each in a "wasted spark" arrangement (think of a loop from the coil to a spark plug, through the block, back through a second spark plug before returning to the coil. [proven to be extremely reliable])



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