Help on project... (Turbocharging)
Miguel Domínguez
09-18-2003, 01:53 AM
Hello Everyone!... I'm new here, but for as much as i have seen in the little time i've got here, i can sense for sure that there are lots of people that can help me around. So here goes. (please forgive me for possible misspellings and erroneous tech terms, english isn't my native language but i'll try hard). And thanks in advance....
My Car: A 93' Renault R-21 TXi (south american version), for those around that might be from europe, these aren't the 2.0 12v sohc 140hp models you know, we only got a 2.2 8v sohc 128hp engine, which is a version of the lower end 2.0 8v 120 hp that has a longer piston run, but it's basically the same engine block (valve springs and lower compression pistons aside) as the Euro R21 Turbo, which makes me in part confident (slightly) that this whole plan can be carried out. This engine has a compression ratio of 9.8:1, Aluminum pistons, tempered steel rods (i'm not an expert, i'm trying to supply as much info as i can in case it could be helpful...).
The plan:
I bought a turbocharger recently, a turbonetics T3/T4, which i've been told that can be good for up to 15 psi of boost, though i don't think that such pressure could be applied here. I also installed a Dastek unichip recently, and will add a turbo-module for it, so it can control additional injectors and other stuff. I plan to install a nice intercooler, a better fuel pump (i'm looking for a walbro 255, or something of the sort), a good cold air intake with some good low-restriction filter, and i'm going to put some 2.5" exhaust tubing with no intermediate mufflers (did i spell it right?) to try and make it go as nice as it can. The idea is to produce something in the order of 200 hp, some more if possible... and for something like that i would need to get at least some 9 psi of boost, i guess.
The questions:... Will it hold up?... i know that i have to reduce compression to some extent... but with these cars one can't find any lower compression piston kits... and i can't just import those of the euro turbo version because some government restrictions for imports (long story). So i have to do it somehow... but keeping the same internals. Now, are there any ways for doing this?... And: what do i need to do to this engine so it can hold the additional power and still last as long as it could, in other words, what do i need to do to prevent it from blowing up, or just breaking down?, i intend to keep the car for some more time, and i must do everything with that on mind.
Finally: do you think that obtaining 200+hp is possible, yet keeping the car as reliable as it can possibly be?, if so, what must i do to ensure reliability?
Thanks again
Miguel
Well, that was quite large... hope you're not too bored by now... but i think that this would maybe help others that have a similar case, that is: whoever has a car for which there are no "pre-built" turbo kits, and might have to improvise as much as have to.
My Car: A 93' Renault R-21 TXi (south american version), for those around that might be from europe, these aren't the 2.0 12v sohc 140hp models you know, we only got a 2.2 8v sohc 128hp engine, which is a version of the lower end 2.0 8v 120 hp that has a longer piston run, but it's basically the same engine block (valve springs and lower compression pistons aside) as the Euro R21 Turbo, which makes me in part confident (slightly) that this whole plan can be carried out. This engine has a compression ratio of 9.8:1, Aluminum pistons, tempered steel rods (i'm not an expert, i'm trying to supply as much info as i can in case it could be helpful...).
The plan:
I bought a turbocharger recently, a turbonetics T3/T4, which i've been told that can be good for up to 15 psi of boost, though i don't think that such pressure could be applied here. I also installed a Dastek unichip recently, and will add a turbo-module for it, so it can control additional injectors and other stuff. I plan to install a nice intercooler, a better fuel pump (i'm looking for a walbro 255, or something of the sort), a good cold air intake with some good low-restriction filter, and i'm going to put some 2.5" exhaust tubing with no intermediate mufflers (did i spell it right?) to try and make it go as nice as it can. The idea is to produce something in the order of 200 hp, some more if possible... and for something like that i would need to get at least some 9 psi of boost, i guess.
The questions:... Will it hold up?... i know that i have to reduce compression to some extent... but with these cars one can't find any lower compression piston kits... and i can't just import those of the euro turbo version because some government restrictions for imports (long story). So i have to do it somehow... but keeping the same internals. Now, are there any ways for doing this?... And: what do i need to do to this engine so it can hold the additional power and still last as long as it could, in other words, what do i need to do to prevent it from blowing up, or just breaking down?, i intend to keep the car for some more time, and i must do everything with that on mind.
Finally: do you think that obtaining 200+hp is possible, yet keeping the car as reliable as it can possibly be?, if so, what must i do to ensure reliability?
Thanks again
Miguel
Well, that was quite large... hope you're not too bored by now... but i think that this would maybe help others that have a similar case, that is: whoever has a car for which there are no "pre-built" turbo kits, and might have to improvise as much as have to.
Automotive Network, Inc., Copyright ©2025