black86tsi Posted April 11, 2002 Report Share Posted April 11, 2002 I have a stock 86tsi and I am rebuilding the bottom end of the motor I have all the exhaust off here is what I have done so far: hooned out all the exhaust ports of the manifold, gutted the pre cat, hooned out the turbo inlets and outlets just clean them up it has 115k what are some performance trick that can help it run faster ? Link to comment Share on other sites More sharing options...
PiercedJD Posted April 11, 2002 Report Share Posted April 11, 2002 performance tricks? this has to be the single most reoccuring question anymore. there are no tricks to horsepower. I am sure there are free mods that will net 5-10 horsepower but in the long run, the recipe is fairly simple. 1) exhaust, boost gauge, manual boost controller, more boost. 2) buy a bigger turbo, supply more fuel and turn the boost up. when you reach your limit with 1 refer to 2. keep refering to 2 until you get it right. in the event you blow your motor up, build the bottom end to handle more power and refer back to 2. Once you get to a signifigantly larger turbo, say a 20g or bigger, it would be a good idea to upgrade your intercooler. hard pipes may help a bit, but aren't going to "add horsepower" just make your power adder more effective. Link to comment Share on other sites More sharing options...
black86tsi Posted April 12, 2002 Author Report Share Posted April 12, 2002 here is what I have done so far and am going to do this weekend: gutted the pre-cat, honed out the exhaust manifold, honed out the ports to the turbo just to smoothen them up, msd coil on the way, will put a small screen in the throttle body just after the broke in the manifold to spread the fuel and working on a hard pipe to the turbo from the airbox. this is just for now because I lost my job and am searching for a new one that pays good ( hard to find) Link to comment Share on other sites More sharing options...
4bangerT Posted April 12, 2002 Report Share Posted April 12, 2002 i dont know if this has been explained on the boards but if not, here goes. Me and my dad drag race VERY radical and fast car. The one thing i have learned that holds true to everything i do to my car is this. A motor in any automobile is just an air pump. the more you can flow with that pump, the more HP. This includes, geting air in fast and under high pressure, so now that the air is in the motor, you must get it out just as fast as it got in otherwise you are restricting air flow and losing HP. I am a firm beleiver that on a turbo car the bigger the exhost the better, the exhost turbine wheel makes all the backpressure the motor needs, once past that the exhost is very high speed and needs no (or very little) scavanging effect like a naturaly aspirated motor would. the turbo compresses so much air that once out of the turbo and into your exhost system you just want it out, so a great system will provide you with the best amount of HP gain, you may also want to think about buting peices of patch pipe and cut the flanges off the cats and weld them or have them welded to the patch pipe once cut to the correct length. The gutted cat is better than a non gutted one but it lets your exhost expand in the cavitys where the ceramic used to be and thus creating a bad flow spot. After your exhost is done good, your going to want an Air Fuel ratio gauge, and your going to want to turn up the turbo, if your runing rich enough, you will prolly be safe at full molehills with the stock turbo (around 15PSI) and if your A/F ratio gauge is still reading rich you can adjust the timing a bit as long as the motor is runing cool and everything else is working proper, the most advance you would want to put in this motor would be around like 12 degrees (stock is 10) and if you still got it way rich, or to lean, get a fuel pressure regulator and either turn the fuel pressure up (for a more rich condition) or down (for a more lean one) also more timing will lean a motor out in your A/F ratio gauge, you may also want a good new o2 sensor or a performance one. i hope some of this helped you out, and if you got any questions E-mail me Kacz Link to comment Share on other sites More sharing options...
heefner Posted April 12, 2002 Report Share Posted April 12, 2002 Well said!! Link to comment Share on other sites More sharing options...
4bangerT Posted April 12, 2002 Report Share Posted April 12, 2002 thanx, i will always try to help out if i can! Kacz Link to comment Share on other sites More sharing options...
black86tsi Posted April 13, 2002 Author Report Share Posted April 13, 2002 what is the max boost pressure that the stock motor can handle for a extended point of time Link to comment Share on other sites More sharing options...
RockyQuest Posted April 13, 2002 Report Share Posted April 13, 2002 I am getting 15-16 psi out of my stock turbo and beating the hell out of the car daily. I don't have an a/f guage yet (stupid me). I did test my fuel pressure and it is very good---49 psi at idle if i remember right. I've read that 15 psi out of the stocker turbo isn't as hard on the motor because you still aren't bombarding it with massive CFM's like you would with a big turbo.- -----I just had a new " high flow" catalytic converter put in so I would pass the emmisions test. I passed and can't wait to gut it out because my 87 feels way slower compared to having no exhaust at all. john 87 tsi Link to comment Share on other sites More sharing options...
black86tsi Posted April 14, 2002 Author Report Share Posted April 14, 2002 what is the easiest way to raise the boost pressure with out having to spend alot of money Link to comment Share on other sites More sharing options...
ttiger Posted April 14, 2002 Report Share Posted April 14, 2002 http://www.dawesdevices.com/ Installed mine yesterday. It works just like they say it will. ;D Link to comment Share on other sites More sharing options...
black86tsi Posted April 14, 2002 Author Report Share Posted April 14, 2002 which one do you have Link to comment Share on other sites More sharing options...
Recommended Posts