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: ) Why NOT to install a turbo on the G60 8v engine that was engineered for a supercharger!

71K views 183 replies 44 participants last post by  vwpat 
#1 · (Edited)
I thought I would stir this topic up a bit... time to bring this back for the 8v guys thinking about real performance :)

First of all I want to start with no dis-respect to all of you that have the turbo running on your 8v. We have many turbo customers and we appreciate the business and support.
I have done more than a few myself and they can at times run correctly and be fun.
Still this combination is slower than a supercharger on this engine can cause some serious nightmares and frustration.

I've owned and ran many a turbo car...I have one right now. I'm switching back to SC. As you all know we sell both turbo kits and supercharger kits.

* The G60 8V engine has very heavy weight internal parts.
* The crank, rods, pistons and even the harmonic balancer are very heavy and I mean very heavy, tank like.
* These parts and the engine were specifically engineered for instant, smooth and the long boost curve of a supercharger. The management is also designed and engineered for the boost of a supercharger. This is a very important part of this.
* The power band on the G60 8v is short...they pull to about 6k RPM. The turbo just starts to go at about the mid point of the RPM band.
* The flow of the head works better with the smooth linear boost of the supercharger.
* The digifant 1 G60 management system can have some serious issues trying to deal with the boost curve spiking in and out, jumping around.
* Any turbo is just a lower performance option, less torque and really works against what was intended here.

I've done a few of these set ups in our shop here and sold at a least a dozen turbo kits for the G60. So I'm speaking from experience.

The best choice for this engine is the good old g-lader or another positive displacement supercharger.

Bottom line, the turbo on this engine will not match the performance of the supercharger FACT!

I've had a $1000 dollars on the table for anyone that can beat our 1/4 mile time with a supercharger on the G60 8v engine running the digifant management, stock engine internals. The money has sat on the table for now over 10 years!

Ok, lets flames away.... :)
 
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#179 ·
Hey Johnny

since i have reading this thread, I have a question.... how about supercharge a awp block, with g60 head ??


asking because I have the g60 with your stage 5 parts, with head, but I have a 1.8t awp block
have you ever done something like that ?

cheers
 
#181 · (Edited)
If you used 1.8t pistons under a G60 head, you would have 12.25:1 compression ratio, but I feel there is likely a million little things to address to make it work. I personally feel there is no advantage here. the 1.8t bottom end is not any bigger, and not really any stronger than a PG. An ABA bottom end would probably net more power gains. Bigger displacement, and higher compression. (Higher than PG block, but still suitable for boost)
 
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