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Hey one and all,

I have just got the car back from the garage today and as part of the work have had my new alloy waistgate fitted (Thanks davelotus).

My question is for anyone who has also done this, is there a settling in time for the waistgate or is mine set up incorrectly?

Obviously my old waistgate started boosting from the turbo at 3000rpm.

Now when I accelerate, it revs through from 3000rpm but it feels like the turbo is not kicking in until 4000rpm.

How easy/hard is it to adjust the waistgate yourself?

Any suggestions, comments or recommendations on this would be greatly appreciated!

Regards

Chats

Adam

1999 Lotus Esprit GT3

1985 Reliant Scimitar SS1 1600 though will be an 1800Ti upon completion (Currently in bits all over the garage and has been since 2004)

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Hi Mike, disconnect a connector from boost valve and go for a ride. Max. boost should be 0,65 bar. If not, you have to adjust a rod lenght. Short rod = more boost, long rod = less boost. rgd

:thumbsup: .... you mean wastegate...... the other thing just holds up your trousers......

There is a piece on LEW for setting the wastegate:

Wastegate Technical

Have fun.

Mike S

Edited by mike_sekinger

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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:thumbsup: .... you mean wastegate...... the other thing just holds up your trousers......

There is a piece on LEW for setting the wastegate:

Wastegate Technical

Have fun.

Mike S

Hi Mike,

disconnect a connector from boost valve and go for a ride. Max. boost should be 0,65 bar. If not, you have to adjust a rod lenght. Short rod = more boost, long rod = less boost.

rgds, B

Edited by TurboSE-SLO
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LOTUS Esprit Turbo SE, 1990

P.U.K. racing turbo charger

ECU chip 1.1 bar

Motorsport racing fuel pump

RC racing High Flow secondary injectors

RC racing High Flow primary injectors

custom made titanium free flow exhaust

Electric CC pump

Double size Chargecooler, heavy duty version

Racing air filter

BOV

Crankcase Breather filter

Ram air converison

Uprated Valeo clutch with 25% more torque

KW85 HT leads, IW22 spark plugs

S4S wheels, front mask, rear spoiler

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I have the performance Alloy shiny (1bar+) from R+B in Deutchland.

NICE - didn't need settling in period.

Although it must be said i didn't fiddle with it, Steve Williams fitted it for me and as a result no problems.

Good luck.

2009 World Singstar Champion

No I don't like the Europa, Evora or Exos.

"Like a cockmonkey with 3 cocks."

SLEG_Rog.jpg

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Thanks guys,

Looking at it I think what has happened is that the garage just connected and screwed the rod onto the new actuator but not actually adjusted and setup the rod length to the correct length.

I know the turbo was kicking in at 3000rpm before and now it is definately kicking it at 4000rpm (After another test drive).

I think when I am back from being away, I will as mentioned carefully shorten the rod to adjust the boost back to the 3000rpm.

Is the rod quite sensitive or do you need a few turns to make a difference?

Thanks for all your help and tips so far.

Regards

Chats

Adam

1999 Lotus Esprit GT3

1985 Reliant Scimitar SS1 1600 though will be an 1800Ti upon completion (Currently in bits all over the garage and has been since 2004)

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Thanks guys,

Looking at it I think what has happened is that the garage just connected and screwed the rod onto the new actuator but not actually adjusted and setup the rod length to the correct length.

I know the turbo was kicking in at 3000rpm before and now it is definately kicking it at 4000rpm (After another test drive).

I think when I am back from being away, I will as mentioned carefully shorten the rod to adjust the boost back to the 3000rpm.

Is the rod quite sensitive or do you need a few turns to make a difference?

Thanks for all your help and tips so far.

Regards

Chats

Hi Chats,

rod is vy sensitive. One turn or two should be enough. But I'm not sure that your boost problem would be connected to right or wrong rod lenght. It could be, but not likely. Disconnect a connector first, before you start with adjusting and check your boost without ECU support. It must be steady 0,65 bar.

rgds, B

LOTUS Esprit Turbo SE, 1990

P.U.K. racing turbo charger

ECU chip 1.1 bar

Motorsport racing fuel pump

RC racing High Flow secondary injectors

RC racing High Flow primary injectors

custom made titanium free flow exhaust

Electric CC pump

Double size Chargecooler, heavy duty version

Racing air filter

BOV

Crankcase Breather filter

Ram air converison

Uprated Valeo clutch with 25% more torque

KW85 HT leads, IW22 spark plugs

S4S wheels, front mask, rear spoiler

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Lotus specify a very tight tolerance on the wastegate actuator setting +- 0.02 bar. Optimum is at the higher end, 0.67 bar. Too high or too low are just a bad. If wastegate actuator pressure is not set right you can get all sorts of poor performance symptoms such as low rpm stumble, overboosting, lag etc...

It is one of the most common setup faults on the 4-cylinder turbo cars. Disconnecting the wastegate solenoid and using Freescan is a good method to get it set right and remember everytime you make a change to the rod length reset the ECU.

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Before you start adjusting things, why was the wastegate replaced? Was the diaphram blown?

Is so the wastegate would have been permanently closed and the engine contantly overboosting. As a result the boost would kick in straight away from low rpm and build up to the maximum the turbo could produce. With a properly functioning wastegate the ECM will feed in the boost more gradually and then limit it to the engine's specced maximum.

I had a similar problem on my V8 where both wastegates had failed in this way. When I got the car back with everything properly adjusted, it was a LOT slower both in pickup and ultimate acceleration. But that's the price you have to pay if you don't want to be replacing the engine on a regular basis!

I see from your profile that you're got a GT3 but it doesn't say what year. Does it have the early dash with a boost gauge and if so what is it reading through the revs when you nail it?

Thanks,

Neal

Edited by neal

May: DON'T hit it with a hammer!

Clarkson: Why?

May: Cause it's the tool of a pikey.

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Hi Adam,

If you have a GT3 with the old dash (= with boost gauge) then you should do a simple test:

1. remove the electrical connector from the wastegate solenoid. (dont worry about the check engine light that will come on when the connector is removed)

2. Go on a test run. When you floor the engine you should get around 0.65 bar boost (= boost gauge needle straight up, 12 o'clock position) not more, not less.

3. if it shows a lower reading then your wastegate rod has to get adjusted by shortening it

4. if it shows a higher reading then you have to lengthen it

After the test reconnect the eletrical connector again and your CEL will go out again ...

Cheers

Marcus

Hey one and all,

I have just got the car back from the garage today and as part of the work have had my new alloy waistgate fitted (Thanks davelotus).

My question is for anyone who has also done this, is there a settling in time for the waistgate or is mine set up incorrectly?

Obviously my old waistgate started boosting from the turbo at 3000rpm.

Now when I accelerate, it revs through from 3000rpm but it feels like the turbo is not kicking in until 4000rpm.

How easy/hard is it to adjust the waistgate yourself?

Any suggestions, comments or recommendations on this would be greatly appreciated!

Regards

Chats

Marcus

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Unfortunately I have the new dash version so that will not help. I think looking at it I will probably take my car in to have someone look at it for me.

Also the reason I changed the Wastegate was because I acquired a new alloy one. The old one was working ok but decided to change as part of work I was having done.

As mentioned before the wastegate was changed the cars turbo starting kicking in and boosting at 3000rpm dead on. Now it starts at about 4000rpm and then the turbo kicks in and accelerates fine.

It can only be the wastegate is setup up incorrect as it worked ok before and now doesn't so that is the only thing it can be.

I have a guy I know who is a tuning/performance specialist so we probably run it into him and see what he thinks.

Thanks for all your help!.

Regards

Chats

Adam

1999 Lotus Esprit GT3

1985 Reliant Scimitar SS1 1600 though will be an 1800Ti upon completion (Currently in bits all over the garage and has been since 2004)

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Adam,

Unless you get mates rates your performance guy could charge you a 1/2 a day or more for this. Will he have the workshop manual, and a TECH 1 scan tool with the Esprit ECU cartridge. If not you are better off doing it yourself with Freescan or getting someone on the list to help you.

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Chats, if you're about in Norfolk, borrow my freescan cable and laptop, with in car power supply.

I should be heading to Edinburgh & Glasgow soon, if that's any use to drop the cable in.

Just drop me a note when you want it.

Andy

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  • 2 months later...

Just an update.

Took my car into STR (Shawn Taylor Racing) in Norwich and the car is now running really well and is nearly there. Just needs a little bit of fine tweaking which I am going to sort today and then hopefully it will be fully sorted.

Thanks for all the help and advice guys!!!

Chats

Adam

1999 Lotus Esprit GT3

1985 Reliant Scimitar SS1 1600 though will be an 1800Ti upon completion (Currently in bits all over the garage and has been since 2004)

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