Terve taas. Löytyi juttua x30xe:stä.
Tuning the X30XE
The most common mods for this engine are replacing the oil/water heat exchanger with an air/oil cooler, as the oil/water one has a tendancy to die and leak oil into the water system, lightening the flywheel, as the std one is very heavy (in the region of 15 kg), a mild set of cams, and enlarging the inlet butterfly. These are all mods which can be done without cracking open the engine.
Tuning the engine further than some bolt on mods is quite an undertaking as the engine has quite a few weak spots.
The rods are quite weak due to their (lack of) width, the water pump is too small for forced induction, the bearings need replacing with stronger items, and the rear cylinders overheat.
The rods can be resolved by replacing with saab 3.0L rods which have an oil squirter drilled into them (to lube the small end, the std rods rely on splash lubrication), welding strengthening strips onto them (yuck! lol), or by getting some steel rods made. Steel rods are expensive (Arrow Precision quote £200/rod for a batch of 6). Ouch! Still, they should be good to around 9000rpm. If you've won the lottery, Swindon Race Engines will make a custom steel crank and rods for £3700 + VAT.
They can also stroke it out to 3.4L Tästä olisi hauska kuulla miten se on saatu aikaiseksi???
The cooling can be resolved by cutting slots between the water jacket in the center so that water can flow out of block cooling jacket and into the radiator outlet/engine water inlet. Onko kukaan kuullut tästä? I'll post up some more information and photo's on this mod when I've modded my 3.0L block. Many thanks to Frank Denker for this information.
I've not investigated a solution to the bearing problem yet, I'll update when I know more.
It isn't all bad news thought. The pistons have nice deep pockets, the heads can be opened up nicely, and
valvetrain tuning parts from the X16XE (1.6 16v ecotec) can be fitted. The engine has lots of potential, it'll just take a lot of work to achieve it.
The engine will really benefit from headwork (some details of my work here http://www.valvers.com/v6/v6headwork.html ). bigger valves (+1mm) can be fitted (standard is 32mm inlet and 28mm exhaust) if the seats are cut carefully. This would put it nearly on a par with the C20XE head design, the main difference being the steeper angle of the exhaust valves
The standard intake system is quite restrictive, and can be improved on. Here's a link to my home grown design.....
http://www.valvers.com/v6/inductionsystem.html
The engine has been tuned up to around 420BHP in a normally aspirated state of tune by Swindon Race Engines though this will set you back £18k + vat. SRE also have developed a very compact roller barrel induction kit for it, which enables a standardish engine to produce 320BHP@7000rpm, the only other mods being solid lifters and a set of mild cams. The solids are put in to aid accurate cam timing, and to stop belt kick-back if the engine's been standing for any length of time and the hydraulic lifters have drained. However, this induction kit isn't cheap, and at 4000GBP+vat (just the throttles, trumpets and injectors), it's a remortgage the house and pimp the cat job.
The engine's also been supercharged to good effect by a dutch nutter called Frank Denker, who achieved 400bhp+100bhp of nitrous. It was his tuner which solved the cooling problems that forced induction conversions have.
Lähde:
http://www.valvers.com/v6/x30xe.html