Running with Engine Cover Off

Running with Engine Cover Off

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five50

Original Poster:

524 posts

187 months

Sunday 31st December 2023
quotequote all
Anyone had much experience of this?
I removed my engine cover today for the first time (for avoidance of doubt, the piece that sits under the glass rear screen).
Car is a 2021 'S'.
Its not night and day, but to my ear there is more mechanical noise from the engine - rather than the more articial noise from the resonator.
With the cover removed, it seems like a more complicated set of sounds - more like the twin cam on open carbs that some people sometimes say the A110 engine noise resembles.
So plannning to stick with it.
Any other feedback on running with the cover off - presumably the engine will run a bit cooler? Helpful on track? Does the rear screen get any dirtier?

five50

Original Poster:

524 posts

187 months

Sunday 31st December 2023
quotequote all
TBH it has taken me six months to dig into the instruction manual to find out how to open the rear hatch!
Its easy.
Three finger screws in the rear boot (hard to see unless you are looking for them) hold the rear hatch down - pull that up and you undo the cover retaining screws / fasteners. On the S, the fasteners have D rings which require a half or quarter turn so are very easy / fast to remove.


five50

Original Poster:

524 posts

187 months

Sunday 31st December 2023
quotequote all
Yeah that would be annoying. The engine compartment does look quite clean - doesn’t seem like much gets in there?

five50

Original Poster:

524 posts

187 months

Monday 1st January
quotequote all
Lotus obviously on the v6 exige got to running a rear deck with open louvres. Perhaps a bit like the Alpine R.
If the R has a single piece carbon hood / cover, then it feels as though the seal would be less of an issue - but then again, maybe not.
Btw - are you Julian Thompson of Elise design fame...??

five50

Original Poster:

524 posts

187 months

Monday 1st January
quotequote all
I’m pretty sure that when I saw David Pook’s Alpine at the Lotus on Track Silverstone day in Nov, he was running without the rear engine cover. I could be wrong but that is my gut recollection.