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Esprit V8 project


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Thanks guys.

Travis - that is a top reference. Good job.

Danny - the cam belts are Gates ´heavy duty´ and just happen to be a nice attractive blue.

Okay, some progress and looking for feedback in ideas for additional oil cooler placement.

First the progress:

Rings installed and forged pistons installed in new liners.

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ACL hardened steel backed bearing for the BEs

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Liners installed and ported heads on

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Further progress with the engine was halted by failed delivery by DHL. I turned my attention to the car for a change.

Fitted the main coolant rad. to the enclosure and started to consider oil cooler placement

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I had originally planned to place the 3rd large oil cooler in front of the main coolant rad. As I have gone for a large custom chargecooler rad., I do not want to impact the efficiency of the stack and wish to place the oil cooler somewhere else. I´d thought about in the back behind the transmission, but now I would like to consider placing is in the front luggage space, with an electric fan to pull air through

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The idea would be to run the hoses up through the body into the luggage area - that would also help keep the clutter out of the airflow.... who has some better ideas?

Sorry for the long-winded post, but now is a good time to make changes if I´m going to go a different way.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Upgrade today to remove Google ads and support TLF.

I still need to add alot of captions on all of my pics.

Mike,

I saw somebody on Lotustalk modified their Esprit V8 to use more modern coil on plug... It was very interesting.

http://www.lotustalk.com/forums/f164/esprit-v8-coil-plug-conversion-77429/

Travis

Vulcan Grey 89SE

My Lotus Photo and Projects Album

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Mike,

Glad to see the engine is comming along!! I crossed the last big risk...the air conditioning...no leaks. I was dreading dropping the stack back out. I am pleased you decided not to put the oil coolers in the radiator(s) air stream. Oil coolers tend to have high air pressure drops across them. Much more than the 0.6" of h20 for the A/C unit.

Where to put them? If up front under the bonnet getting the air in & out is the issue. Getting air out is probably easier, a Ford GT style bonnet. Getting it in ...don't want to put a scoop in the way of the primary radiator(s) air flow. Duct it up from the old paths for the OEM oil coolers, but that's a lot of cutting to the floor structure of the nose section. How are you with carbon fiber?

Wayne

The Older I get the Faster I was

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"...and looking for feedback in ideas for additional oil cooler placement."

I'm still pushing for a "whale tail" placement in the wing, Mike. Even if the oil feed lines (and even the cooler itself) are left visible it'll look gnarly cool.biggrin.gif

(Sure, John, I'm all over it. And not being able to open the hatch is such a minor inconvenience afterall.....)

Being second is to be the first of the ones who lose.

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Mike

There are probably lots of reasons why this idea is a non starter but could you fit that 3rd oil cooler flat into a cut out in the boot floor made in the space where the spare wheel would sit, then mount a fan to suck air through it and vent the air either through louvres in the wings where the side repeaters are or in louvres through the bonnet?

Normally Aspirated - and lovin' it!

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Would cutting the boot's floor be advisable? That's a high stress area where chassis and front suspension loadings are concentrated. The chassis, though stiff longitudinally, needs all the torsional assistance it can get?

Ian and I are pondering a similar exercise here with his v8. There's some space in the side cavities of the rear bar. Mounting the coolers sideways like on motorbikes eg Honda Firestorm, with low pressure ducting downstream seems to be a possibility in that region.

DanR

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Dan

Take your point although the boot floor really flexs under the weight of the spare wheel when you move it in and out so I don't think that particular area is contributing much to torsional rigidity. If I were thinking of doing such a thing I would be looking to fabricate a G/F mounting frame/duct around the hole that I cut out to support the cooler anyway and that would hopefully address the situation.

Neat idea about the sideways mounted coolers

Normally Aspirated - and lovin' it!

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Some good idea there - thanks.

Today have been a lot of fun with cutting and drilling fibreglass :)

In the end I decide to use the under bonnet space, but didn´t want to cut the bonnet itself to have the air coming up over the car (far too much work for me !). I also didn´t want to introduce the warm air into the coolant feed. The whole reason for moving the big oil cooler, was to keep the chargecooler and main coolant radiator efficiency high.

Here is where we are at tonight. There still needs to be some work on ducting to channel the air out of the space, but the radiator tray is very easy to place into position now.

Larger central oil cooler

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Replacement side oil coolers with connections under the light motors

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Front with fogs removed to allow additional air flow

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Got a curry on the go, so that´s all from me.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Engine work still on-hold, so cracked-on with the oil coolers.

Made up some of the -10AN hoses and plumbed in the central cooler. The fan is en-route, so I´ll finish of the ducting another time. I´ll probably lay in a small NACA on the underside of the floor to draw cool air into the space. The fan will be switched based on temperature trigger, so it won´t be running all of the time.

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As the car will become a some kind of engine proving/development vehicle, I have decided to install dry-break hoses for the oil circuit. These are the recently obsolete Jiffy-tite connectors. The idea will be to use a link-pipe for initial engine start-up, and then connect in/out the oil cooler circuit. I´m not planning the same thing for the coolant, but then water is easier to clean-up than oil..... :rolleyes:

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Slightly off topic, but Spring is here so we have some recently hatched additions

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..... they´re going to be tasty :)

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Q: can all this extra power be used given the limitation of the transaxle as Lotus de-tuned the V8 because of that? (sorry if I missed using an alternate box)

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Hi Bob,

I have a GTO Engineering 5-speed upgrade gearbox - with a 3.44 cwp. It should be good for a little more than 500bhp and in theory, have the legs for over 200mph.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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A very short update today. Wanted to test fit the rear deck, so robbed the supplied rear deck of the hinge fixings and transplated them.

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Glued the sealing strip around the lip and it sits in quite nicely

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Never one to miss a chance...... you´ve got a few years to wait Jasey

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Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Hi Simon,

Carbon deck is just over 8Kg vs. 31Kg for the standard deck. It´s not an earth shattering saving, but worth having height up on the car.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Made good progress today on the engine.

Shalln´t bore you with all the piccies (... for a change).

Everything is now timed-up and sealed-up. Cam covers will be getting new paint....

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Tapped in oil temperature transducer for the instruments

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Rebuilt a new clutch pack with friction discs for the Ford 1" spline

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Also got a whole load of goodies arrive - dry-break stuff for the oil coolers - fancy lightweight oil lines and the fan for the front oil cooler

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Finally, I inspected the exhaust system that arrived from our superdavelotus. Nicely put together the the additional boss for the wide-band lambda is perfectly placed :lol:

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Hopefully, I´ll get around to installing some of that over the weekend.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Hi Jeff,

It certainly would have made more straight-forward options for installation, but I didn´t want to add more heat into the main coolant circuit. I also didn´t really want the additional weight of another seperate coolant system.... this was my compromise.

Half-day in the workshop and made more progress with the engine. I´m very keen to get it finished and back in the car. Still aiming for mid- to end-June for ECU work

Dummied-up the oil dry-break - still comes higher than the base of the sump, which was a worry. It´s going to make engine swapping a much cleaner business.

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Ported and coated exhaust manifold and turbine housing, with hybrid turbos

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Waiting for turbo hose components, so may get some more done on the car tomorrow.

Cheers,

Mike S

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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