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I currently have a Carb Turbo, that needs an engine rebuild after dropping a hose. I have seen an EFI version with ECU etc.. is this a straightforward swap?

Thanks

Chris

 

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Uhmm all interesting points made by @NG5 and @Escape ,  but nothing that can not be overcome with a few changes, 'excuse the pun'.   The twin oil coolers could be adapted with the original bumper, as

Yes apologies to @red vtec for going slightly off topic.   In the perfect world I could put together a full kit with all the loom made up to the spec required with all the peripheral controls inc

I did mention the speed sensor, but omitted to mention the Drive Shaft.. you will need at least one later spec drive shaft with a trigger wheel on .. This is the same trigger wheel that is used for th

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I did think that but EFI appeals

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"I haven't ridden in cars pulled by cows before" "Bullocks, Mr.Belcher" "No, I haven't, honestly"

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If you have a complete EFI engine, with all associated parts like ECU, fuel pump etc, it should be straightforward (but still a lot of work). I'd say definitely worth it, carbs do have a certain charm but EFI a bit easier to live with.

 Good luck and keep us posted,

Filip

I have made many mistakes in my life. Buying a multiple Lotus is not one of them.

 

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Would I need to fit an SE Front Bumper with the twin Oil Coolers?

 

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I would think the oil cooler is a must for the increased bhp and associated temperatures that brings.

Only here once

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9 minutes ago, Barrykearley said:

I would think the oil cooler is a must for the increased bhp and associated temperatures that brings.

But do I need an SE bumper ? I think they are on each side where as my Turbo has a central one?

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To be 100% confident, yes it would obviously be best to have the twin oil coolers, but to fit them there is more needed than just the SE bumper, all the ducting is different including the rad duct and obviously you would also need the chargecooler rad, plumbing, etc. So not cheap unless it all comes with the engine. Not sure there is space for the single oil cooler after all that lot is fitted.

IF you are not going to plumb in the charge cooler, to avoid all the changes to the front end, then obviously power will be down and oil cooling less of an issue. Modern synthetic oils are also more temperature stable than oil in the late 1980's when designed. The coolers were also designed for the heat of California, not the icy wastes of Essex. 

So if not changing to an SE front end, only using it on the road, not tracking it, without the chargecooler plumbed in, it may be ok,  but keep an eye on the oil temp if you do!

Or perhaps fit a bigger single cooler.

Just my opinion.

 

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20 hours ago, red vtec said:

Would I need to fit an SE Front Bumper with the twin Oil Coolers?

 

As above, if you don't fit a chargecooler, you can keep the central oil cooler from the carb turbo and there is no reason it wont be up to the job. EFI alone does not give a big rise in power so no real need for extra cooling. I'm not even convinced the chargecooled versions actually have a need for more cooling, but with the chargecooler rad there simply is little room for an oil cooler in the rad pack. Unless you would fit a thin one in place of the aircon condensor. Come to think of it, if you don't have (or use) aircon, the central oil cooler should certainly be enough.

Filip

I have made many mistakes in my life. Buying a multiple Lotus is not one of them.

 

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Dave is the Stand Alone something that could be sold PnP with a little tuning post install?  Or does it require you to be hands on to get everything right?.  If so ball park pricing? 

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Thanks for all the advice.

@CHANGES I have been and looked at the unit it is complete with all the loom sensors, rads, gearbox, fuel pump etc etc... What I don't want to do is buy an expensive paperweight. I'm quite happy to adapt parts etc... just need advice etc...

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36 minutes ago, red vtec said:

Thanks for all the advice.

@CHANGES I have been and looked at the unit it is complete with all the loom sensors, rads, gearbox, fuel pump etc etc... What I don't want to do is buy an expensive paperweight. I'm quite happy to adapt parts etc... just need advice etc...

You can call me anytime, advise is always free.. 

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8 hours ago, Erikl said:

Dave is the Stand Alone something that could be sold PnP with a little tuning post install?  Or does it require you to be hands on to get everything right?.  If so ball park pricing? 

You can always buy it as a kit with a start up map installed.  It will come with pin out wires and wirings diagram . You then just need to cut shield and fit to your particular engine layout..  You do need to do a bit of this.

IMG_20150316_112632687_HDR.jpg

 There is some special adaption bits that need machining for the TPS , but not rocket science .

DSCN0563 (2).JPG

Also a new trigger wheel and sensor mount will need fitting to the f/pulley and block ..  see pic's

DSCN0567.JPG

IMG_20141003_160456494_HDR.jpg

 Everything is available from stockists, with the exception of TPS mount . You just need to decide what system you want ..  Once all fitted ,book in at your local dyno to get the performance map set up for your spec of engine ..   Prices will vary from supplier to supplier..   It does not require me to be hands on , just someone capable of understanding the concept, and ability to make and machine the specialist parts ..   

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I was hoping to buy a kit from you where I do a little wiring and bolt the parts on.  Then have a final tune done.  that looks like a tidy system. 

I guess it runs the AC and all the other sub systems as stock?  

 

Sorry to hi jack maybe I should start a separate thread.

 

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9 hours ago, Erikl said:

I was hoping to buy a kit from you where I do a little wiring and bolt the parts on.  Then have a final tune done.  that looks like a tidy system. 

I guess it runs the AC and all the other sub systems as stock?  

 

Sorry to hi jack maybe I should start a separate thread.

 

Yes apologies to @red vtec for going slightly off topic.  

In the perfect world I could put together a full kit with all the loom made up to the spec required with all the peripheral controls included as required .. Various Spec's would determine which ECU stand alone unit you could use . Most manufactures like Omex have a range to choose from , but for more specialised application, Life Racing and Motec are the way to go .. The reason for this is you can put add on's to the base unit as required , this is very useful if you do upgrades at a later stage ..  For eg. I moved to Life Racing to give me more options like programable 4 stage traction control , phase and anti phase turbo control , temp rev limits on multiple area's during warm up , dual knock sensors to control individual cylinders on advance and fuelling.. We can even have one of the maps include auto max advance for peak performance on track days.. the list goes on , but all at a cost ..

So because of all this ,it would be quite complex and costly. It would be far more economical to source from your local specialist  . If you were based in the UK it would be different and i would say let me have the Esprit and I will supply, fit and dyno to the spec required for said engine and peripheral .. But be under no illusion this sort of work can end up costing a lot when done professionally..   Everyone want's a different spec so it all gets very time consuming and specialised ..   There are quite a few owners who have done their own basic stand alone set ups, with great results .. It just takes a little research and patients..  I am sure someone will eventually do a base kit . 

I am always happy to share any development info I have , along with problematic area's I have come across..

              

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13 hours ago, red vtec said:

Thanks for all the advice.

I did mention the speed sensor, but omitted to mention the Drive Shaft.. you will need at least one later spec drive shaft with a trigger wheel on .. This is the same trigger wheel that is used for the ABS system on later Esprit .. The rear drop link hub would also need drilling to accommodate the sensor. 

HPIM0033.JPG

A cheaper and alternative option would be to use an ABS trigger wheel from the front hub off later models..  This will fit your earlier hub type . You would also need to obtain the front sensor brackets or manufacture something to facilitate ..   You will also need to look into wheel/tyre circumference, as the ECU you have will be set for the rear n/s wheel/tyre size of that model ..  All small details but worth being aware of .. 

HPIM0022.JPG

The above pic shows on the 'left' the trigger wheel I refer to. You will need that type because the ECU will only recognise that tooth count . The one on the right was what I moved over to for a clearer signal, but i can program my ECU to except any tooth count and wheel size.

Hope this helps.. 

     

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Hi Chris,

I kept the centre mounted 88 oil cooler on my esprit and then mounted an air con rad and larger charge cooler rad to the standard 88 undertray. 
I have put an SE bumper on which has a larger opening for airflow however It’s using the original 88 rad ducting. There are pictures of it in the projects area called the never ending project if you want to see how it fits.

I also wouldn’t use the original ECU. Currently mine is on an omex 600 however if I was doing it again I’d use a 710 as the ignition control is better.  
 

I converted the carbs to fuel injection rather than doing an engine swap. How bad is the damage, could the engine be rebuilt and converted?

I’ve been thinking about fitting larger exhaust valves to mine and then maybe taking the opportunity to turn it into a stroker engine 🤔

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I never realized the road speed was that important to the engine management. I thought it was only used to limit boost in 1st and 2nd. After checking the manual it seems it's used for idle and spark control as well as radiator fan control and A/C. So yes, you'd want to add the speed sensor, even if it complicates matters.

You learn something everyday (even if you think you know your car well), thanks @CHANGES!

Filip

I have made many mistakes in my life. Buying a multiple Lotus is not one of them.

 

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