View single post by Esprit2
 Posted: 04-25-2019 07:31 am
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Esprit2

 

Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 575
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 If there is a 'pro' to such a set-up, it's far out-weighed by the cons. First and foremost, such a system would have huge turbo-lag.

For an example of a good turbo set-up on that engine, look at Lotus' own 910 turbo. Yes, I know it won't fit in the Jensen-Healey, but look at the parameters that make it work. The exhaust manifold is as short as possible, putting the turbo right behind the head. Then a short runner goes directly to the boost plenum. All that was done to minimize the total volume in order to minimize turbo lag. Moving the turbo 8+ feet back would add a lot of volume, all of which must be pressurized by any boost change before it can be effective at the valves.

A very short-run, front engine Brazillian car called the "Emme 422T" used the Lotus 910S engine, but with a special exhaust manifold that placed the turbo down low, to the left of the engine. Something like that would be a better solution for the J-H than mounting the turbo at the rear of the car.

Attachment: Emme 422T Engine Bay 75.5kb.jpg (Downloaded 38 times)

Last edited on 07-02-2019 06:44 am by Esprit2