This is unadulterated BS. There are many, many Mazda RX7's and other rotary
powered
cars out there with well over 300,000 miles. 500,000 kilometers. I see many 25
year old
first gen RX7's on the freeways  of Southern California almost every day. I
saw one
this morning.

I have owned  six rotary powered cars. A new RX2, an RX4 station wagon, a two
rotor Cosmo,
two 2nd gen RX7's and I currently own an RX8. Some with over 300,000 miles.
None of them
ever had any problems with apex seals or problems with the chrome plating.
Some Mazda rotary aircraft applications in gyro copters have over 2000 hours
with no troubles.
Rotary engines have been used in aircraft since 1973 with stock Mazda chrome
plated
rotor housings. Further more chrome plated cylinders were specified in WW II
by the US Navy
for all their aircraft engines for salt air corrosion reasons. Chrome plated
cylinders
were also widely used in general aviation air cooled cylinders and still are.

http://jhbperformance.com/technical.php

IMHO the credibility of this company is zero.

-------------------------------------------------------

What JHB are purposely  omitting here is critical information on the
**** METHOD **** of applying the coatings. This makes all the difference
in the world and the METHOD OF APPLYING the coating is EXTREMELY important.

Alterdyne is a large company in San Diego that makes generator sets of all
sizes and types for civilian and military markets. Alterdyne manufactured
1,2,3 and 4
rotor engines based on  Mazda rotor housings and their own all aluminum
end housings. One of the engineers at Alterdyne by the name of Paul Ross
told me many times the only coating method that withstood the test of time was
the detonation coating method. Gen sets run for years.

http://www.alterdyne.com/

JHB is not telling us the METHOD of coating. Due to the exceptional reputation
of the detonation coating method one would think they would say so if they
were using the detonation coating method. They are therefore obviously NOT
using the detonation coating method.

http://www.homestead.com/aflame/index.html

Finally JHB claims they are using the same "coating" as Mazda used on the
Lemans
4 rotor engine but that is not strictly true if they did not use the same ***
METHOD
*** of coating. Here is an excerpt from the Mazda SAE paper on the Lemans
engine.
Note that Mazda used the detonation coating method.

BTW JHB is a Canadian company therefore they cannot be sued for product
liability
reasons according to Canadian laws as I recall. I am not a lawyer let alone a
Canadian.
Good luck getting anything out of them if they ruin your engine.

Paul

Paul,

It looks like this discussion has come up before.  We could quickly settle
it if we know 'where' Mazda had their Lemans parts 'detonation gun' sprayed.

I wonder if the Mazda's SAE report is accurate in the choice of words they
used.  Could 'detonation gun' sprayed been used when they meant plasma
sprayed?  I ask because I was responsible for translation and rewriting a
book  on Fine Ceramics in 1990 and I used to go round and round with the
professors and authors who insisted on using the wrong terminology. The
author had the rights to the final edit. Just a thought.  Mazda may have
hired a pro to actually write the paper.

I guess I could always contact the authors and find out?

Doug (In Japan)

That would be a good idea Doug. You should be able to find at least one
or two of these guys still around. Perhaps John Dinkel has Koby  Kobayakawa's
phone number in Japan. I assume you have the SAE paper pdf.