[DML] Re: DMCH Performance Engine

["cruznmd" <racuti1@xxxxxxxxxxxx>]

Warren,

Thank you for that well-worded explanation. I've long wondered why 
you wouldn't just sell the parts as a kit.

Rich A.
#5335

--- In dmcnews@xxxxxxxxxxxxxxx, "Warren Wallingford" <warren@xxxx> 
wrote:
> 
> There was a thread last month on the DML, warm and wide, about PRV 
performance and secrecy. Herewith, DMCH wishes to set its part of the 
record straight.
> 
> We set about the Performance Engine Project in a straightforward 
manner. We sent three complete engines to a tuner in the UK. We told 
them what sort of power we wanted out of the resultant engine, how 
much it should cost the end user, and that when finished, the engine 
should pass US emissions tests, be as reliable as the stock PRV, and 
be usable by both transmissions. 
> 
> . There is only one basic hot rod technique: increase airflow. All 
of the argument and anguish is about how it may be done and when it 
will happen. The DMCH performance engine has achieved its gains from 
careful shaping and polishing of the ports in the head, balancing of 
the combustion chamber volumes, development of optimized cam 
profiles, and use of a tuned, low-restriction exhaust system. The 
recent adoption of the NologyT ignition booster upgrade keeps the 
spark hot throughout the rev range. 
> 
> The time and expense of the project are testimony to the care and 
precision put into the development. For example, there were five cam 
profiles tested, in sequence, each with its attendant dyno pull, 
before the right one was found. Each test session required a tear-
down, cam re-grind, and rebuild. There were dyno sessions for the 
exhaust and for the reliability tests. During this process the 
limitations of the stock Delorean setup became evident. Two hundred 
horsepower is the limit of the ignition and two twenty-five is as 
much as the fuel injection can handle without increasing the pump and 
fuel line capacity. At the end, what came back was an engine that 
looked stock but didn't sound nor run like the donors. It delivered 
197 BHP at 5500 rpm and has a torque curve that is flat within 40 ft-
lbs from 2000 to 6000 rpm. 
> 
> In and of themselves, the modifications are not remarkable. They 
are certainly nothing new. But their parameters have been carefully 
chosen to work together as a system, rather than a group of things 
that "might do some good". This is the main reason for our insistence 
that the performance mods be sold installed on an engine: to preserve 
the system and its performance. Secondly, one of the requirements of 
the project is reliability. DMCH insures that its performance PRV 
engines retain their inherent rugged nature by hand-assembling them 
here in Houston. We have sold 50-odd performance engines since the 
program began. There have been no failures. So you can see that 
proprietary concerns play a poor third fiddle to performance and 
reliability in our firm policy of selling engines rather than bolt-on 
parts. 
> 
> This new performance crate engine is offered complete and 
assembled, with new water pump, intake manifold, injection lines, 
fuel distributor, warm-up regulator, injectors, ignition coil, a 
NologyT ignition upgrade, and a custom exhaust for $6750, f.o.b. 
Houston. Alternatively, the performance modifications may be 
installed here in Houston on a suitable existing engine in an owner's 
car for $5250.
> 
> Warren Wallingford
> 
> DeLorean Motor Company (Texas)
> 
> 15023 Eddie Drive
> 
> Humble, Texas 77396 USA
> 
> 
> 
> http://www.delorean.com
> 
> 800/USA-DMC1
> 
> 281/441-2537
> 
> 281/441-2813 Fax
> 
> 
> [Non-text portions of this message have been removed]








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