Date: Wed, 28 May 1997 02:28:30 -0400 (EDT) From: taylor_b@pacbell.net To: robertc@snowcrest.net, vanagon@lenti Subject: Re: Noise, smoke, engine death, Quantum TD transplant soon Message-ID: <970528022828_-697456478@emout20.mail.aol.com>robertc@snowcrest.net writes
So, here is the question, what do I need to do in order to put a Quantum TD into a Vanagon diesel?
From my experience of using a '85 Quantum turbo, intake,and exhaust manifolds on my '83 camper, I would suggest the following would cover the significant points:
Well thats what I remember as the most signifcant items. Based on my own experience, I think the improvement is worthwhile. Hope this helps.
Brent
From: taylor_b@pacbell.net Date: Fri, 30 May 1997 01:26:26 -0400 (EDT) To: jag@cs.rochester.edu, vanagon@lenti.med.umn.edu Subject: Re: Turbo Swap-QuantumTD-VanagonRegarding my '83 camper with '85 quantum TD turbo and manifolds jag@cs.rochester.edu Martin asks
>how did you connect the oil feed?
The oil feed line runs from the oil filter casting to the turbo. I removed the oil filter casting, and had a hole drilled and tapped in the top of the casting and used the factory solid metal line which runs around the back of the head and down to the turbo. If you have the correct TD oil filter casting, you could probably avoid drilling and tapping for the oil line.>How long did the whole project take you?
I think I spent on and off about 4 months. This includes trying to find the correct pieces, getting the turbo rebuilt, trying to figure out what to do with the oil return, I experimented with an electric pump to return oil to the sump, etc.>How many miles do you have on it since the conversion?
Around 15k, One trip to Baja at Christmas this past year, many 150 mi weekend trips, commuting plus a vacation from California to Oregon. It has been pretty reliable with the following exceptions; a rear main seal leak during the first year, and a recurring muffler support breaking. I have never had the engine out of the car or the head off the engine. It is a factory remanufactured CS long block with about 95k since install.>Any figures of what the improvement was (smoke limited torque? hp? Or in indirect figures: acceleration improvement and max speed?)
Because of lack of boost enrichment, and the desire to avoid overstressing the non TD long block, I am running about 8 psi max boost, and I have also backed off on the fuel delivery adjustment. I keep an eye on exhaust gas temperature, particularly when climbing steep grades. Subjectively speaking, the car can accellerate to merge on the freeway easier, the top speed (with 5 sp) is 75 mph plus, typically run 65 mph. The smoke on accelleration is reduced, the gas mileage runs about the same- 28 mpg typ.> Which oil pump?An estimate for the horsepower would be about 58, note that the 85-90 Jetta has a 68 hp td, and the '91 Jetta Ecco diesel without boost enrich. and with a cat.converter has 58hp.
I would try to use the td oil pump, with the vanagon pickup if possible. I haven't tryed this, but I would think with the oil squirters and a later hydraulic lifter head that you would need the larger capacity pump.>>...In Germany people are already swapping in TDI engines (90 and 110 hp). ... TDI engines become availible in the boneyards.
I was considering this but was deterred by a $3500 price tag for a junkyard TDI motor. When you add misc. fabrication and likely a different transaxle gearing to match the power, you could spend $5000 on this kind of a project. Used gas motor are much more plentiful and you could probably buy 4 of them complete for the price of one TDI motor. Keeping this in mind, I would still prefer a TDI motor.Brent