RV8 Twin Turbo Esprit Help!!

SuperV8 · Post by **SuperV8** » Sun Dec 13, 2009 6:07 pm

Looking good. I love the look of the Esprit.

If you go the megasquirt route you can ditch the dizzy, give you a little more space. Also the crank pulley from an 4.6 gems is a lot shallower than the 3.5 rangey pulley.

Tom.

ChrisJC · Post by **ChrisJC** » Sun Dec 13, 2009 7:23 pm

I would fit the distributorless front cover from a GEMS / Thor engine and use MegaJolt for timing.

Chris.

JJMclure · Post by **JJMclure** » Sun Dec 13, 2009 10:05 pm

that's looking really nice, saw an esprit on the m25 today they still look good, forgive my ignorance but is it the same model Lotus that Roger Moore had in for your eyes only? I take it your not gonna fit the same anti theft system!!!!

wayneb911 · Post by **wayneb911** » Sun Dec 13, 2009 10:36 pm

Hi Chris

Any more pictures of the timing cover you are on about. I have the SD1 case fitted at the moment wich is 85mm wide i thought this was the slimmest cover? Anyone know where i can get one slimmer like that??

thanks

wayne

ChrisJC · Post by **ChrisJC** » Mon Dec 14, 2009 8:56 am

Early Range Rover vs P38 Range Rover:

Disco Series II (I think) vs P38 Range Rover:

And a not too good picture of the install in my Landie:

Chris.

wayneb911 · Post by **wayneb911** » Mon Dec 14, 2009 11:46 am

Chris

This is the cover i ahve on mine at present. Is it SD1. Whats my best option then and how would i make the change. IE what would i need etc. Bare in mind mine is an old 3.5 engine. I plan on running EFI so if i need to get rid of the dizzy as well im happy to do so.

After the best option to make space that waont neccaserily cost me a fortune!

Thanks

Wayne

SuperV8 · Post by **SuperV8** » Mon Dec 14, 2009 1:24 pm

The GEMS cover would bolt straight on BUT you will need to modify the crank for a longer key way. Also you will need to modify your cam shaft on fit a GEMS cam shaft.

I looked into fitting the GEMS timing cover when I had my 3.5 fitted. Ended up buying a 4.6 of e-bay!!!

SuperV8 · Post by **SuperV8** » Mon Dec 14, 2009 1:30 pm

Just a thought,

Decided i will ditch the carb route and have bought a complete EFI set up which will be reconditioned and added shortly

What ECU did you buy? If a standard one and your turbocharging it have you though about how you'd controll the fueling/ timing under boost?

ChrisJC · Post by **ChrisJC** » Mon Dec 14, 2009 1:33 pm

As you say, that's an SD1 cover.

Firstly I would check that the later distributorless cover will work for you. You can see the measurement in one of my photos with a ruler.

If it will, then the issue is putting the later cover on your block. The cover will fit, but the following points spring to mind:
1. The crankshaft will be too short by about 1/2 inch. That might be OK, but the keyway may need lengthening. Not sure about this.
2. You may have to add a retaining plate to the camshaft as the load caused by driving the distributor keeps the cam in place. Later engines used a retaining plate. You might be able to cobble up a cam button instead, but note there is a sensor nearby, (may be good or bad)
3. Oil pickup is different, but interchangeable.
4. Sump is different.

I'm sure others will chip in with some details.

Chris.

wayneb911 · Post by **wayneb911** » Mon Dec 14, 2009 2:07 pm

Okay si i have decided to stick with the cover i have to save to much compliaction. My thoughts on getting it all to fit are

Take the standard crankshaft pully and cut it down to the end of the bolt that holds it in place. Weld a ring to the front which a slimmer pulley can bolt straight onto and bobs your uncle?? Alternator will need a custom bracket and sit down bottom left of engine. Water pump blanked as i have done by removing the shaft and will need the hole welded over to just run an electric inline pump up by the rad.

Anyone see any issues with this?

SuperV8

I have not purchased the control system yet i wont worry about that till all the fabrication work is complete. I will probably be running with megasquart or emerald.

Thanks

Wayne

wayneb911 · Post by **wayneb911** » Mon Dec 14, 2009 2:35 pm

JJMclure wrote:that's looking really nice, saw an esprit on the m25 today they still look good, forgive my ignorance but is it the same model Lotus that Roger Moore had in for your eyes only? I take it your not gonna fit the same anti theft system!!!!

Hi Yes the orangy coloured one which is an S3 car. The white one was S1

ChrisJC · Post by **ChrisJC** » Mon Dec 14, 2009 3:38 pm

Make sure your new crankshaft pulley includes a harmonic damper in it. Otherwise the crankshaft may resonate and snap.

Chris.

SuperV8 · Post by **SuperV8** » Tue Dec 15, 2009 9:59 am

You'll need a toothed crank wheel/ sensor with an aftermarket ECU.

Just something to bare in mind if your modifiying/ playing with crank pulleys.

My range rover crank pulley (3.5 falpper) came with 2 pulleys botled to the damper via the 6 bolts. The inner one was very slim with virtually no offset. I had to use the outer one because of my water pump but if your not using the water pump I don't see why you can't use this?

Tom.

andyv8van · Post by **andyv8van** » Tue Dec 15, 2009 2:59 pm

Hi,

An option you also could use with the sd1 cover is to, remove the dizzy and replace it with a cut down dizzy to still fit in the hole to drive the oil pump as it used to be.

i will post a picture when i get on my other pc

regards

Andy

wayneb911 · Post by **wayneb911** » Tue Dec 15, 2009 6:03 pm

Hi guys.

Interested in the cut down dizzy job. Take it then i would just run electonic ignition instead? Is it a case of just cutting the dizzy down and puttingthe shaft in or is there more to it?

Regarding pulley i will be running the alternator bottom left so i can run the pulley fairly close to the housing hopefully. Also to run a crank sensor i will by or have made a large flat toothed ring which will sit behind or in front of the pulley and the sensor will be on a bracket.

When it comes to harmonic damper will i be able to use just a rubber membrane between the pulley and mating surface? From what i hav eread on the rover v8 engine the crank is balanced to zero so there shouldnt be to much vibration?