

| Subject: | Re: Superchargers? - Low Pressure Turbo! |
| From: | Jake de Villiers |
| Date: | Fri, 8 Jul 2011 08:13:17 -0700 |
The Paxton supercharger was also available on the 289 CI engine in the Studebaker Daytona. The very conservative Lark body with significant power under the hood makes it a real sleeper! ;) Good story here: http://ateupwithmotor.com/family-cars/196-studebaker-lark-super-lark.html On Thu, Jul 7, 2011 at 11:44 PM, Frank Grunthaner <frankgrun@aol.com> wrote: > I've just seen this query raised by Don Hanson over the viability of > supercharging the I4 engine. I've seen the enlightened comment about the > much simpler use of a turbo for a significant power boost, which was > followed by the difficulties of doing this modification on the stock engine. > I'm again moved to comment and offer a few centimes of advice to brave few > who are tempted to implement the turbo solution. > > > Several years ago, I shared with this list my studies of power (actually > torque) enhancement methods based on the 1.8l I4 gasoline engine system. I > examined several possibilities including the g60 and studied the published > MTZ papers from VW Engineering about their choice of the G60 and their > modifications to the basic 1.8L I4 engine to ensure its reliability. I also > looked into several aftermarket systems as well as the McCulloch variable > speed drive supercharger used by Studebaker/Packard on the Golden Hawk and > the Avanti. Of all the supercharger systems, I concluded that the McCulloch > was the best for application for the small I4 engine. Its variable speed > pulley system drives the supercharger at a high rpm ratio at low engine > speeds and at lower drive speeds at higher engine rpm giving an enhanced > torque curve that is nearly flat across all operating engine rpm. Of course > this is exactly the design objective of the VW's superb turbocharged 1.8L > engine.I also determined that the Turbo 1.8L was too large to comfortably > fit my needs, didn't readily adapt to the 50 degree DV mount - AND the cost > would be impossible to hide from She Who Must Be Obeyed! > > > I reviewed what I wanted from more coins expended on power enhancement and > concluded that a modest power boost on demand was desirable. In general, the > 1.8L I4 performed very well in town and on the open highway. I really wanted > more moxie for passing and I wanted to recover the power lost driving in the > mountains due to the lower atmospheric density at higher elevations. A well > engineered turbo charger was perfectly suited to my application. I was quite > aware of the additional stress added to the rotating system as well as the > cooling and lubrication systems by high power turbo systems. My primary > driver has always been reliability with a touch of excellent efficiency > thrown in. Under these terms, the return of power at high elevations was > virtually stress free because it really brought the system back to its sea > level performance dynamic. > > > OK, all of this is in the archives and on Alistair Bell's web page so I > won't recount the details. To summarize, I went to the 2.0L Audi 80 block > and head because of its strong internals and the excellent flow > characteristics of the head and intake manifold. I used the Garrett T3 and > adapted it to the Calif. version of the Audi 80 exhaust manifold. The T3 fit > nicely after I rotated it so the spin axis of the turbo was perpendicular to > the axis of the crankshaft. In the 50 degree configuration this placed the > turbo perfectly horizontal. I modified the intake manifold to adapt the > digifant fuel injectors and used the digifant engine control system. I also > took the SAAP automatic pressure control (APC) ignition system and used it > for ignition and timing control since it controls boost pressure based on > the signal from the knock sensor. I added additional oil cooling from the > Audi 5000T and injector cooling from same. I added the SAAB 9000 Blackstone > intercooler for charge cooling mounted in the driver's side rear well. I > also added a oil scavenger pump to clear the turbo oil return and redirect > the collected oil to the oil pan. The scavenger pump was mounted in the > normal position of the power steering pump on the I4 engine. At this tine I > also developed the oil pan baffle system to control the oil flying > everywhere. Finally, I added a water injection system along with an EGT > monitor to maintain a margin of control. The water system was plumbed to the > camper water supply. > > > I designed the system for a maximum of 2-3 psi boost but in practice the > intake manifold pressure sometimes approached 4.6 psi. The engine package > was extremely strong and never showed any tendency to overheat. I did enjoy > the way the front of the vanagon would lift as I punched the throttle. It > served me well until I got the TDi bug. > > > For what its worth, > > > Frank Grunthaner > > > > > > -----Original Message----- > From: pat <psdooley@VERIZON.NET> > To: vanagon <vanagon@GERRY.VANAGON.COM> > Sent: Wed, Jul 6, 2011 5:12 pm > Subject: Re: Superchargers? > > > The VW G60 charger is a known weak link in the Corrado. > A lot of Corrado G60 owners upgrade to turbo. > > 4 grand is a lot for forced induction when you can get a Garrett T3 for > $100 > and rebuild it for another hundred. Sure, you need an exhaust manifold and > exhaust plumbing- throw in another $200. > Either way you need an intercooler, intake piping and management. > > A supercharger (like a Lysholm, not a G60), is good for around town and > probably the best choice for a Vanagon. > For your Jetta, the turbo is the best kick in the pants. > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > Don Hanson > Sent: Wednesday, July 06, 2011 11:14 AM > To: vanagon@GERRY.VANAGON.COM > Subject: Superchargers? > > Anyone have any experience with superchargers on a VW? Turbochargers get > all the ink..everyone talks about Turbo Subies and Bostig transplants. > > In many factory vehicles, superchargers are original equipment. VW offers > some factory supercharged models. Toyota started doing it way back in the > '90s... > > I have seen kits offered for inline VW motors...For example: Bahn Brenner > (a VW Tuner) offers some stand-alone kits and also upgrades for the G-60 > factory supercharged VW. Their kits are said to up the 1.8 liter > supercharged motors output from 180hp to near 200 > > For $4k you can get your N.A. Jetta motor making ~180hp and ~200lb/ft of > torque... with a supercharger kit said to bolt on in an afternoon. > > I am just curious here if anyone has gone that route to more power for a > Vanagon. It's my understanding that superchargers work without any "lag" > and they don't involve complex exhaust routing. > > Don Hanson > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1388 / Virus Database: 1516/3746 - Release Date: 07/05/11 > > > -- Jake 1984 Vanagon GL 1.9 WBX - 'The Grey Van' 1986 Westy Weekender/2.5 SOHC Subie - 'Dixie' Crescent Beach, BC www.thebassspa.com www.crescentbeachguitar.com http://subyjake.googlepages.com/mydixiedarlin%27
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