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Amazed by how much stuff is available for old Volvo RWD tuning


Chris Wilson

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I had thought that there would be less serious tuning stuff available for old RWD Volvos than there was 15 years ago, but no, there are some very tasty bits and pieces available :) How about a special LSD that takes thicker half shafts than the weak stock ones, and with a vast choice of preloads and ramp angles? or a kit to have fully floating half shafts so they see no suspension loads, only torque loads? Motorsport blocks that enable a 3.2 litre 4 cylinder build based on what was originally a 2 litre engine? (Cast by Grainger and Worall here in the UK, in special high strength iron). I MUST RESIST, burn the debit card!

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I had the Renault version of the PRV V6 (Peugeot, Renault, Volvo) is an Alpine GTA, in N/A form and it too was fine, but I guess we were lucky, generally speaking they were notorious for dropped liners and head gasket issues. Fixing it was engine out and a TOTAL strip down to the bare block. They were a VERY light engine though, and in GTA Turbo format and in the ultra rare Venturi 400GTR and 600LM cars was developed to give a lot of grunt. The late even fire engines are considered a much better unit and it is said Alfa Romeo used them as the basis for the 155 GTA engine used in Touring Car Racing, albeit vastly modified. They claimed it was a Montreal V8 with two cylinders deleted, but those in the know considered they plagiarised the PRV V6 as they hadn't the money for a one off V6 development programme.

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Why the hell Volvo didn't stick closer to the stunning 2 door V90 estate car concept I don't know. The release version is 4 doors, and doesn't seem to have any more load space headroom than the concept car. Not that i am that interested as they are now a dedicated front wheel drive company, with a sap to 4 WD with the iffy Haldex stuff.

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Raise the boost with either a boost controller or a stronger wastegate capsule. You can buy chips for the ECU i think, to have different fuelling and ignition curves. You can get different cams, hell you can get EVERYTHING right up to 425 BHP naturally aspirated, at a price.

 

But bear in mind the engine is already tired, so take it easy. You may have to get a custom exhaust made. It already will have the better turbo manifold. You can bolt bigger turbos from other Volvos to it...

 

I am aiming for 400 real BHP at the flywheel, but mine has a stroker crank, different rods and different pistons to take it to 2.8 litres. With more boost I could make a LOT more, but I want TORQUE with a capital T. It should make 400 BHP at well under 1 bar boost

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