smikey

My apologies to both Chris and Andy. My mistake. Thank you both for the feedback.

Thank you for the reply. However, part #33 is located between the oil pump and the auxiliary housing. Oil pump has to come off. Thank you for the reply Andy. Yes, they appear to be to be the same, but I would like to know with some certainty before I am midway through a project with no replacement part.

Hello. I recently purchased new aluminum fuel tanks for my 1989 Esprit Turbo USA. I successfully removed and replaced the passenger side (right side) tank and fuel pump without removing or lowering the engine. I have not yet removed the driver side (left side) tank and fuel sender. I believe removal and replacement of the driver side tank will be more difficult since there is less room between the tank and the engine. Are there any good (comprehensive) forum posts on how to remove the driver side fuel tank? Are there any good posts on how to lower or remove the engine as needed to create room to install the new fuel tank? Thank you.

Hello. I am in need of a new sealing ring (A907E6167F) for a 1989 Esprit Turbo USA. The oil leak is coming from the sandwich seal between the oil pump and the auxiliary housing. I have not removed the oil pump yet. Does anyone have specifications for this sealing ring or know of a cross reference part to use instead? Is there a parts supplier who has this seal? (Part #33 on attached image) Please advise if you know what I can use to replace the old seal. Thank you.

Dodge1979, There are two (one on each side of the manifold) and the black side is nearest the manifold on each side, but I'm also trying to understand "why."

Hello, all. Thank you for the comments. Yes, I am talking about the cylindrical / disc shaped non-return valve (black top with white bottom) - not the bright green crankcase breather. I agree, 17 quid ($27) is a bit ridiculous for the black and white valve. I removed this non-return valve from the vacuum line and blew air through it from both ends. It does not appear to be working properly because air flows freely through it from both directions. Which direction should the air flow through - from the black side to the white side? See attached photo from LEW.

Greetings, friends. I'd like to substitute a non-Lotus part for the non-return breather valve provided between the crankcase breather valve and the T-piece vacuum rail take-off (fuel rail). I've found a similar non-return valve from Saab and Volkswagen. I've also found one from Tyagi Racing, which is called a fuel tank breather non return valve, and looks quite nice (aluminum). Are all non-return valves the same? Do I need to use the Lotus part? All constructive comments are appreciated. 1989 Esprit Turbo

What is the torque specification for the three nuts that bolt the exhaust down pipe and flange to the studs on the turbo (turbine housing)?

Thank you for replying. I read that cars with MAF systems do require recirulating blow off valves, but I don't know if my specific model utilizes the MAF system. I read a posting by hovgaard that the Forge DV006 recirculating dump valve would work on an S4, but Forge's website states that the DV006 is suitable for cars with an Air Flow Meter (so that doesn't seem consistent to me). My car does not have a chargecooler; it's not an SE, S4, or GT3. I know is has a MAT sensor. If it had a MAP sensor, the ECU would be able to caclulate volume and density from temperatrue and pressure. Thus, a MAF sensor wouldn't be needed. I'm assuming cars with a MAF metering system don't need MAT or MAP sensors? I don't find many postings from people with 1989 model year cars (GM fuel injection system) without the chargecooler, much less postings about fitting blow off valves to them; so I'm not sure if it uses the same MAP metering system or not.

Does the 1989 Esprit Turbo (non-chargecooled) have an Air Flow Meter? I'm planning to install a dump valve, and I have noticed that some valve types are for cars with an air flow meter and other types of valves are for cars without an air flow meter. I had the impression that the Esprit Turbo (pre-se) did not have an air flow meter. Please advise.