Hi Mitch
Here're passages from Kastner's description (pp. 239-240) of Dick's
turbocharged car (which is a very impressive - as you can imagine):
"The added MSD ingnition system makes revving out to the redline a fast trip.
The MSD box is set to retard the ignition .5 degrees of ignition per pound of
boost. The water injection has also been changed. The Taylor system has a
hypodermic needle instead of a jet to shoot a fine stream of water into the
carburetor that cools the mixture in the comprssor discharge housing. These
additional systems are installed to prevent engine wrecking detonation at high
boost pressures"
"The MSD ignition control, water injection, and the mixture monitoring are all
details highly recommended for turbocharged engines. Detonation is the danger.
Detonation can happen easily with hight boost pressure and these add-ons make
Dick's engine just that much easier to protect"
Kastner goes on to caution that the adjustment of the position of the
compressor discharge pipe must insure that both sides of the intake manifold
are not starved, since too lean a mixture in either side will cause detonation
"and easily ruin a good engine".
Again, the performance gains claimed by Moss are on a non-stock engine with a
compression ratio I thought was too high for turbocharging.
Given this you can understand my reluctance to abandon the KISS principle.
I guess I'm risk adverse (on your point of no unique path to engine
performance).
Jerry
----- Original Message -----
From: Mitch
To: Jerry Shaw
Cc: 6pack@autox.team.net ; Sally or Dick Taylor
Sent: Sunday, August 19, 2007 6:22 PM
Subject: Re: [6pack] Moss supercharging question
Hi Jerry,
The need for an MSD, 02 sensor or vacuum gauge is not required for a
SC/Turbo'd engine either. All of these are tuning tools that apply to stock
motors or slightly warmed engines such as yours. It can be as complex or
simple as you make it depending on your skills and performance goals. An
improved ignition would benefit any motor & an 02 sensor would help get the
proper jetting/neddle changes to optimize your cam & compression change.
I completely understand the "keep it simple" rule, and do not want a
frankenstein living under my hood either. Everyone wants something different
from their ride and the information available from this list allows us to
build & customize our cars individualy.
There is no single path or ultimate build, only the uniqueness of each car
& owner.
--
Mitch Seff
Oceanside, N.Y.
75 TR6 SC
http://www.triumphowners.com/384
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