Plasma, cement, ceramic coatings. First Impressions
01-25-05, 11:16 PM
#1
Plasma, cement, ceramic coatings. First Impressions
Got the package with my TII rotor housings today.
I have to say that I am quite happy with the
quality of the finish and am looking forward to running these
like new rotor housings.
I opted for the lower cost Cermet B coating.
After a close look at the housings I see that they have been nicely cleaned up
on the out side as well as the coolant passages.
The spark plug holes appear to have been chased with a tap and
lubed with something, spark plugs turned in easily by finger.
The oil injection holes look like they might be a little plugged with
grindings and when i tried to blow through them i couldn't
I would assume that when i do a final wash in the varsol tank and
blow them out with compressed air they will be cleared.
I have attached a couple pics of the finish which looks great even appears to
have a slight crosshatch pattern on them.
Ok now that all the good things are said, me being the extremely fussy
s.o.b. that i am i will point out a couple minor imperfections
next to the exhaust there is a very small spot void of coating
and on the other housing just bellow the spark plug area there is another spot.
these little imperfections should in no way affect performance or anything else
for that matter, I am just pointing out what i see.
look at the attached pics and judge for yourself.
later
matt
I have to say that I am quite happy with the
quality of the finish and am looking forward to running these
like new rotor housings.
I opted for the lower cost Cermet B coating.
After a close look at the housings I see that they have been nicely cleaned up
on the out side as well as the coolant passages.
The spark plug holes appear to have been chased with a tap and
lubed with something, spark plugs turned in easily by finger.
The oil injection holes look like they might be a little plugged with
grindings and when i tried to blow through them i couldn't
I would assume that when i do a final wash in the varsol tank and
blow them out with compressed air they will be cleared.
I have attached a couple pics of the finish which looks great even appears to
have a slight crosshatch pattern on them.
Ok now that all the good things are said, me being the extremely fussy
s.o.b. that i am i will point out a couple minor imperfections
next to the exhaust there is a very small spot void of coating
and on the other housing just bellow the spark plug area there is another spot.
these little imperfections should in no way affect performance or anything else
for that matter, I am just pointing out what i see.
look at the attached pics and judge for yourself.
later
matt
01-25-05, 11:23 PM
#2
first pic shows a small nick which is really minor
the 2nd pic looks much worst in the picture it is only about 1/8 " long
you can tell by counting the fingers how long it is.
3rd pic looks looks to be a deep nick buts about the thickness of paper
deep and small in size.
matt
the 2nd pic looks much worst in the picture it is only about 1/8 " long
you can tell by counting the fingers how long it is.
3rd pic looks looks to be a deep nick buts about the thickness of paper
deep and small in size.
matt
01-26-05, 10:36 AM
#7
these housings were grooved up bad they were unusable before i sent them
in to be done.
I just hope they last time will tell i guess.
I plan on running ceramic apex seals with these housings.
matt
in to be done.
I just hope they last time will tell i guess.
I plan on running ceramic apex seals with these housings.
matt
Originally Posted by Wankel7
That much eh?
But it does look good...
What is the deal with the nicks?
Was that there before you sent them the rotors?
James
But it does look good...
What is the deal with the nicks?
Was that there before you sent them the rotors?
James
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01-26-05, 08:05 PM
#10
How rough is the surface, it looks very rough from the pics.
Can you run a dial indicator over the surface and post variance?
And from the pics it look like there are a lot of inconsistencys in the surface, I mean I know you are taking pics of the bad spots, but there are other spots that look to be problem areas just in the pics you posted.
Can you run a dial indicator over the surface and post variance?
And from the pics it look like there are a lot of inconsistencys in the surface, I mean I know you are taking pics of the bad spots, but there are other spots that look to be problem areas just in the pics you posted.
01-29-05, 12:12 PM
#13
About time that somebody started offering housing surface renewing services, this is what, 40 years after the first rotary came out? Good news for those folks with L10 engines and the like (any Cosmonauts in here?). Anyways, if they work as good as JHB advertise them, they might become a genuine alternative to new parts, as they imply that their product should be longer lasting than new parts.
02-09-05, 06:30 AM
#16
WingmaN
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We have our fingers crossed tight. 
I think they will work better and last longer than stock. It is money very well spent. You spent less than a new set of housings and they will probably be better.
It is also good to know these are being tested by a seasoned person than somebody that may be putting together their first motor. This makes the results and feedback much more fair to JHB. We know the motor will be built right
I think they will work better and last longer than stock. It is money very well spent. You spent less than a new set of housings and they will probably be better.It is also good to know these are being tested by a seasoned person than somebody that may be putting together their first motor. This makes the results and feedback much more fair to JHB. We know the motor will be built right
02-09-05, 09:44 AM
#17
Originally Posted by now
Its a ongoing saga and I will post a full report when its all said and done.
this is all i will say for now.
should have an update in a couple weeks, hopefully with lots of positive feedback.
later
matt
this is all i will say for now.
should have an update in a couple weeks, hopefully with lots of positive feedback.
later
matt
Ok for those who were wondering what the above post was about,
I made some measurements of the housings at i had resurfaced, (as shown in the
picture I posted) I found a slight imperfection in the finish of the surface (I am sure
that the apex seals would have eventually matched the imperfection) but I
thought i would let JHB respond to what i found before posting anything.
I since have returned the housings to JHB and I have been told that they will
fix the problem. marc is being very professional about this and that I will have my
housings back done right at no extra cost to me.
Since I am in no rush this is not a problem for me, but for someone who might
have wanted this work done asap they might have been a little more upset,
but i am sure in that case marc would have had exchange sets ready to go.
matt
02-09-05, 09:46 AM
#18
Originally Posted by Scalliwag
We have our fingers crossed tight. I think they will work better and last longer than stock. It is money very well spent. You spent less than a new set of housings and they will probably be better.
It is also good to know these are being tested by a seasoned person than somebody that may be putting together their first motor. This makes the results and feedback much more fair to JHB. We know the motor will be built right
I think they will work better and last longer than stock. It is money very well spent. You spent less than a new set of housings and they will probably be better.It is also good to know these are being tested by a seasoned person than somebody that may be putting together their first motor. This makes the results and feedback much more fair to JHB. We know the motor will be built right
for even the 2nd gens will be no longer available.
matt
02-10-05, 03:01 PM
#19
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The surface looks horrible.New housings have a dull grey finish,and look ever so smooth,so why does the ceramic look so rough.Point is,being ceramic,it is probably going to stay that way.Guess I will know soon,as I get back my 12A turbo housings,cermet A coated.
02-10-05, 07:05 PM
#20
Originally Posted by timrxmotors
The surface looks horrible.New housings have a dull grey finish,and look ever so smooth,so why does the ceramic look so rough.Point is,being ceramic,it is probably going to stay that way.Guess I will know soon,as I get back my 12A turbo housings,cermet A coated.
and I will have to take better pictures when i get them back
matt
