IDI engine, there IS a future...

[Mark(The Miser)UK]

Um no, that stuff wouldnt even stay on the outside of the manifold let alone inside the combustion chamber.


dan

[/size]
Hmm just found this site...

http://72.10.43.141/high_temp.htm

[tylernt]

This article describes many of the differences between DI and IDI. The author seems to think that our little old IDI is superior in many ways!

http://www.patentstorm.us/patents/5915351-description.html

[zukgod1]

Um no, that stuff wouldnt even stay on the outside of the manifold let alone inside the combustion chamber.


dan

[/size]
Hmm just found this site...

http://72.10.43.141/high_temp.htm

Well give it a try and let us know how it works will ya?

From experiance I will say even 1500 deg paint isnt going to stick on the exhaust housing for long.

dan

[jimfoo]

I found that mud from Moab stays on very well.  

[zukgod1]

Oh yes, it sure does.   I have a nice set of Thorley headers with Brown spots all over them  :roll:

dan

[lord_verminaard]

Oh yes, it sure does.   I have a nice set of Thorley headers with Brown spots all over them  :roll:

dan

Yeah what's up with that?  I keep wire brushing and re-painting some spots on the frame of my Jeep but it keeps coming off every few months.  There's still mud under there from my first off-roading that will refuse to come off even with a pressure washer!!!  

Brendan

[Nevadan]

What was the final result of the ceramic coating research?  Did anyone actually coat the prechamber and the upper part of the chamber in the head?

(There's lots of reference to ceramic coating and prechambers on this site but noting definitive.)

[jboogie13]

awesome stuff, definitely keeping an eye on this thread.

[theman53]

Keep watching, but the last time this thread was active was 5 years ago.

[RabbitJockey]

I remember a few threads of people who coated the pre chambers and everything.  I think there is probably alot to be gained from coating inside the swirl chamber but only on the round part in the head, not on the inside of inconel cup itself.  I think that would help keep the heat as a part of combustion instead of being wasted in the coolant. Then obviously coating valves pistons and combustion surface on the head would help with all that too woot

[theman53]

Yeah that thread I bumped I think it was Malone's old IDI had coated inner precups. His findings were that if you coated the inner it wouldn't have enough residual heat and it always smoked whitish. Like this it was an old thread that I bumped, but on purpose to show the younger ones what had been done.

[RabbitJockey]

I wish the old forum was still available.  I think a glimpse of it is available through the way back machine.  Alot of good info was there, even going back to the early days of the switch to this new forum which is only a few years from being a decade old!!!

[jboogie13]

Keep watching, but the last time this thread was active was 5 years ago.

something i keep forgetting about this forum, the activity is quite low, however the quality of threads is much higher. Other forums i follow are much much more populated and constantly changing.

[monomer]

Be warned, ceramic coating will stop heat from penetrating it's surface.

That  heat still has to go somewhere. It won't get dissipated via oil cooling through the piston.


DCR's making 4 digits on 2.4L, no thermal coatings. 

[rabbit_tdi]

Well, I did not use any coatings.

On my 1.6 TD, I opened up the port in the swirl chamber cup, disabled the wastegate, disabled the blowoff valve, lowered the compression ratio, and increased the fueling rate.  Now, the engine makes 88 HP at the wheels (measured on a dyno).  Stock turbo, no intercooler.  The old rubber hose from the turbo to the manifold could not handle the increased pressure (25 psi), so I made a steel elbow to replace it.

What are the HP losses of an 020 transaxle and the tires at 60-70ish MPH?  Perhaps 12 HP?  If so, then the 1.6 TD is making around 100 HP at the crank.

A 1.6 TD will run when the compression ratio is 17.5:1, but it REALLY needs for the timing advance knob to be pulled out until the engine is almost up to operating temperature.

I built this engine for my racecar and had expected to get about 100 HP at the wheels (about 110-115 at the crank), but it did not work out.