The moment genesis VW Golf GTI 16V, referred to be devotees of the marque as the A2 or MKII, is a terrific second-hand automobile. The 8-valve GTI won Van and Chauffeur's Motorcar of the Year award in 1985, the year it was brought to the U.S., and matters conscientious got preferable from there: In 1987, VW introduced the 16V GTI. Initially it false 123 horsepower, on the other hand by 1991 was producing 134 hp. Engage in the honorable modifications and this practical hatchback can easily be imaginary as accelerated as many full-on sports cars and sports sedans from the identical Period, such as Porsches and BMWs.
What is Turbocharging?
Turbocharging is a anatomy of forced induction that forces exceeding fuel and air into the Engine. The turbo works off the exhaust. As exhaust gases Way out the Engine, they are forced down the fins of the compressor inside the turbocharger, increasing the horsepower by forcing amassed air and fuel into the Engine. The feature that the turbo works off the exhaust is besides why straggle can be a greater problem, where there is a mo before the turbo kicks in and increases horsepower. The extended stuff approximately turbocharging is that you can hire a relatively humble Engine and fabricate it even deeper compelling.
The 16V Engine and Turbocharging
Either a 1.8-liter or a 2.0-liter Engine can be turbocharged, however the 1990 and subsequent 16-valve GTIs featured a 2.0-liter, DOHC inline four that yet in inventory cut puts outside an impressive 134 horsepower. The exterior and featured enhanced modern-looking bumper treatment.
Something to examine when turbocharging a GTI Engine is the compression ratio, which can be a limiting board in turbocharging, because turbocharging increases the Engine's compression ratio when under boost. In inventory fashion, the 16-valve GTI has a relatively aggressive compression ratio of 10:1. What this means is a lower, stiffer suspension to reduce squat and dive and possibly wider wheels, so you can install stickier tires to control the power. Very, a high-quality limited-slip differential, such as a Quaife, is suggested for the front end. This will ensure that the horsepower is distributed properly to the front tires, allowing you to really use that newfound horsepower and torque. Extra braking, to slow the car from the higher speeds it can now attain, is also highly recommended. You can besides originate with an 8V 8.6:1 compression ratio block, which already has a turbo-friendly compression ratio, and Friend that to the 16V attitude.
Accessories
Along with the turbo unit itself, turbocharging a van requires other components. Thanks to the Engine is getting more air, larger fuel injectors are recommended to supply adequate fuel. Heat is the enemy of horsepower, so to keep things cool, an intercooler helps. Once the turbo and associated plumbing is installed, a free breathing 2.5-inch exhaust is recommended for getting the most from the turbo. You'll also need to install some type of engine management system or at least a boost controller to control the amount of boost from the turbo.
Sourcing the Parts
Since the GTI is such a popular car for tuning, there are companies that offer turbo kits. Kinetic Motorsports offers a ready to install kit for the 16-valve GTI.
You can also source the parts yourself. You will need a manifold for the turbo conversion, available from various sources like APTuning. The turbocharger to use is a Garrett T3 turbo, which can be sourced new or acquired from a junk yard. Do some research and you'll find a lot of mass-produced cars used this turbo, such as Saab 900 Turbos.
The Complete Package
With the addition of more power comes the need for added control. A successfully turbocharged Golf will be a blast in a straight line, but with only a front-wheel-drive platform to control all that power, it's a good idea to sort the chassis to balance the performance and keep things safe. This is suitable for boost pressures of up to five pounds, which can deliver sorrounding 40 horsepower. Anything beyond that, though, Testament wish rebuilding the Engine with a lower compression ratio. This can be done with aftermarket pistons or pistons from a supercharged VW Corrado.
