Recent motor buildup pixtures
#26
I guess I should give a little update on that car. I did not have time to put sensors on the car, as it left for SevenStock that weekend. But I did notice in 100deg weather, on the freeway while ragging on it in the higher rpms I could not get the coolant temp gauge to move, and oil temperature felt much much cooler, than normal. The coatings also held up inside the motor, and I did notice that at idle with the opened up exhaust there are no misfires/incomplete fires at all. I don't know how its doing for power, as there are a lot of variables involved. I will have 3 more engines done here shortly, and a uncoated one to do dyno comparisons...
#28
If everything goes to play I will have a side by side comparison here in the next 3/4 weeks.
Numbers will be off an Evo8 that has the intake and exhaust manifolds, along with the turbine housing and the downpipe. I'm going to also see if they will go for doing the turbine wheel also.
Numbers will be off an Evo8 that has the intake and exhaust manifolds, along with the turbine housing and the downpipe. I'm going to also see if they will go for doing the turbine wheel also.
#30
Originally Posted by zeromage428
gah....looking at these pictures want me to start my project....but i cant until i have stupid tickets paid off
curious as to what kind of improvements do the heat resistance coatings produce? for instance have you coated a valve and measured it's surface temp after 60 seconds of acetalene torch and compared it to a stock one? is it ceramic based?
Last edited by alexdimen; 11-15-05 at 04:34 PM.
#31
kill it with BOOMSTICK!
![](https://www.rx7club.com/images/misc/15_year_icon.png)
I'll have to keep this in mind when doing my rebuild here shortly
EDIT: Stupid question, but how do you hold up the tranny with the engine out of the car?
EDIT: Stupid question, but how do you hold up the tranny with the engine out of the car?
Last edited by Falcoms; 11-15-05 at 08:43 PM.
#34
Originally Posted by alexdimen
my sentiments exactly... but that empty parking lot really was asking for it
curious as to what kind of improvements do the heat resistance coatings produce? for instance have you coated a valve and measured it's surface temp after 60 seconds of acetalene torch and compared it to a stock one? is it ceramic based?
curious as to what kind of improvements do the heat resistance coatings produce? for instance have you coated a valve and measured it's surface temp after 60 seconds of acetalene torch and compared it to a stock one? is it ceramic based?
I might also note that I read in a "Factory Competetion Preparation And Service Manual" that thefactory was using molybdenum on their side and corner seals for self lubrication and longevity purposes.
We also coat all seals with the oil attraction and retention coating seen on the side irons...
Last edited by Turblown; 11-15-05 at 10:34 PM.
#35
yup..ur in the ballpark....by keeping the heat energy in and prevent it from excaping through the metal pipes u retain the entropy of the exhaust gas...keeping the exhaust molecules highly energized so they can do more work, ie spool turbines.....it does the same thing as exhaust wraps pretty much except u can "wrap" any shape u want and the heat barrier is between the gas and the metal piping instead of the pipe and ambient air....which also reduces heat induced stress and expansion
it all looks good on paper....so i have no idea how well it works in real life
only concern i have about coating all the rotors, housings is that oil is designed lub and cool the engine somewhat..if u reduce the oil's function to cool the engine, wouldnt it run hotter?....putting more stress on the coolant cooling system?
if anything knows the specifics of enthalpy/entropy please let me know....i need some tutoring in the wonderful science of thermodynamics!
it all looks good on paper....so i have no idea how well it works in real life
only concern i have about coating all the rotors, housings is that oil is designed lub and cool the engine somewhat..if u reduce the oil's function to cool the engine, wouldnt it run hotter?....putting more stress on the coolant cooling system?
if anything knows the specifics of enthalpy/entropy please let me know....i need some tutoring in the wonderful science of thermodynamics!
Thread
Thread Starter
Forum
Replies
Last Post
jetlude
Single Turbo RX-7's
4
08-18-15 04:53 PM