• Instant-G Full 993 RS Early Car System

What is a crate motor?

Quick Overview: The Instant-G 3.6 ltr. "Crate Motor"

  • In general, these engines are USED engines, not new, not rebuilt, but have been tested. Parts which need replacement have been replaced, i.e. oil filter on 993 engines. They are neither rebuilt nor refurbished and we do not represent them as such. Please read the warranty statement carefully with respect to used engines.
  • We are now also making available REBUILT engines, either with top ends or full rebuilds.
    • Depends on what we have in stock
    • Can be built to order
    • Warranty depends on each case and must be specified on that basis.

As you may know, Chevrolet, Chrysler, Ford and many after market manufacturers offer American engines as "crate" motors. This avoids people having to find an engine, make modifications, test and tune etc.

This gave us the idea for a similar service on 3.6 motors.  We have had way too many customers purchase our kits and a "Bargain" motor from a wrecked car.  That motor might be a deal but very often it's a motor with issues, that has been sitting around forever and may have been fine when parked but now that they are getting long in the tooth, needs some serious work.

The Process: 

  • We purchase a used engine,
  • Perform the conversion, i.e. install the conversion pieces,
  • Test it in an actual car on the road
    • Heat cycle the engine several times
    • repair any problem areas
    • Leak the engine down.  Maximum 3% cold leak down is accepted.
  • Leave it in that car until someone needs that motor 
    • Yeah, we have 9 cars we own with 3.6 conversions, which is how we can do this!
  • then remove it and adjust the valves, (If needed)
  • then install whatever additional parts the customer requests
  • box it up and ship it to you or install it in-house.
  • Click Here for Typical Vram Crate Motor

When the customer receives the engine along with the conversion kit, it is ready to go in, and the conversion time and cost on his/her end is reduced. The total is a bit higher up front but the hassle factor of getting an unknown motor may well make it worth it. Installation should be under 10 hours since it's a matter of bolting in the engine and connecting wires and fuel lines. Obviously, our time is worth something, so the cost includes about $500-600 for this service as it is quite time consuming, and, more importantly we do the legwork AND WE TAKE ALL THE RISK. On the other hand it saves a fair amount on your end since the bugs have all been worked out and accessories installed.
The customer selects the exhaust, and options, and we do the work. Pricing depends on the options chosen. We can also perform this service on motors the customers supply, and we can also install them in the car..

How do we do this? Easy. I own over twenty Porsches, and quite a few of them have 3.6s. I drive them rarely, but it means that I can sell a motor in a car, then simply replace it when convenient. The only engine that is not for sale is the one in my wife's race car. That has to run!


Ready to Ship, Domestic Rates are $350-$600 depending on destination

Typical story of one such motor. We bought the motor at market rate, but it had leaky cam boxes. We then threw about 8 hours at the motor at our expense and fixed the leak, which is now starting to be quite common. Not to mention the time it took to install and remove the motor. It would be difficult to find a similar motor for much less than we sell them for, then add parts and labor, and a valve adjust and it doesn't take long to exceed the money sold for.

Detailed pricing for through 1986 915 and 87-89 G50 based cars (MS Excel Format)

See: Cars we have done Instant-G 3.6 and 3.8 Conversions