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Messages - Bluecometk

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Changfa Engines / READY TO BY A 1115 23HP CHANGFA, HELP PLEASE
« on: March 09, 2010, 10:10:15 PM »
I have been looking at Carol Stream motor company for an YX1115. 23hp. anybody have any experiance with them or this engine?

The ad shows the engine with what looks to be a belt driven fan in the side of the hopper. That sort of scares me a little. They also have one on ebay that doesnt mention the fan, it just says hopper cooled for 949+ 149 shipping.

So anyone got any Ideas, thoughts other places to purchase?

I appreciate any info you may have or knowledge you can share

Thank You In Advance


Engines / Re: Infered temp tester
« on: June 23, 2009, 02:10:23 AM »
If everybody is doing their job correctly I think the cyls should only see a 20-25 F difference between them under load. When you are checking big bore V12 and V16 turbo charged engines.50F to 75F is acceptable under high boost and that is sometimes dependant on cylinder position in the cooling system.

Just my two cents


General Discussion / Re: High end Flashlights/torches
« on: June 21, 2009, 05:09:05 AM »
I'm with DOUG.I will take 75+ year old technology. A 237 will light half the house, heat a room or two, cook my food and burn all night on a couple oz of fuel. A bonus is when you light one up your kids will come running.

You guys should ashamed of your selves with this talk of modern technology ;)

Engines / Re: Infered temp tester
« on: June 20, 2009, 03:27:29 PM »
I have been using laser pyrometers for years on our team race engines. The units we have are very accurate at the high temps we use them. We also have pyrometers in the exhaust ports in each cylinder to compare the two temps. The average variation between the two test types is about 7 degrees F. This could be because they are reading two different types of temp, surface temp and gaseous temp. The only other difference is a slight delay in the timing from the two when they actually read the temp. They have saved us many times. The units we use are fairly high dollar units. We have some lower priced models that work quite well, they are a little slower and 1 or 2 degrease less accurate. They all are well worth the Expense.

Just my two cents

General Discussion / Re: GM bankrupcy !!!
« on: June 03, 2009, 03:50:32 AM »
Gentlemen, I am skeptical about the fact that it is said that they grossly mismanaged the company. Let's not forget that new models/next generations/next model years, take 7 to 10 years to come to fruition. So even if they made changes in the model years when the long-range forecasters set the alarm on the oil problems and the economy problem, they couldn’t have made major changes to the company. Should they have not put all their eggs in one basket? Yes. Did they get caught out? Yes. But I think they were doing what anyone would do which is ride the profit wave as long as they could all the while stalling for time for engineering to catch up and funds for retooling. The normal indicators did not show the rise of oil and the fall of the economy to move so rapidly. I may be incorrect, but didn’t GM have multiple levels of hybrids on the road and in development as everybody else does? I think they were operating like a miss-tuned engine, they ran full throttle for so long and leaned out the mixture to get every last drop of power until they detonated and melted down. We all know that engines run their best just before they let go and The person at the throttle is usually the last to realize that there motor's gonna blow.

I welcome rebuttal but don't jump on the new guy too hard. These are just my opinions.


General Discussion / Re: Cars again.
« on: May 29, 2009, 01:59:01 AM »
Some of the latest Mercedes have 7 speed AUTOS in them.

 I have a 95 Subaru auto that gets an average 27.9-mpg at an average speed of 51 mph on an average 127 mile daily drive.

 On the other hand, the Subaru STi has had a 6-speed manual in it since 2004. Sti’s have stock hp numbers of 305 hp and get a highway average 27mpg.
The ESX STi's I work on get slightly less mileage. The first is a street legal AWD STi with a 2.5 liter turbo charged engine that churns out 1,042 hp and runs the Quarter mile in 8.91 seconds at 154+ mph on street tires with a full interior, exhaust, power windows and a curb weight of 3,262 lbs. This vehicle is fully street legal except for catalytic converters, its fuel mileage is about 1.84 gallons of VP import gasoline (125 octane fuel) per Quarter mile. It is well known as the worlds fastest Street tired STi with 18 national NHRA championships and 2 NHRA  world championships in 2 years.


The other is a Molly tube all carbon fiber bodied 2,060 lb modified STi with a 2.57 turbo charged 4 cyl on Methanol. It produces 1,400 hp on 50psi of boost. It runs 7.60 second quarter mile passes at 176 mph. Its fuel consumption is about 2.6 gallons per quarter mile pass.  This vehicle is the fastest AWD Subaru in the world. 

   Some Stats. Pro car

The engine spins at 9,300 rpm and uses 3 injectors per cylinder to supply fuel .One of the three injectors is used to spray a cooling charge into the intake to cool the intake valves. If the engine is shut down at the finish line the valves will bend from being white hot. The turbo's inlet is 101 mm in diameter. Nitrous oxide is used to spool the turbo at the line. The turbo spools to 50psi, which is full boost in just under .68 seconds. The power produced is transmitted through a slightly modified Subaru 4 speed automatic trans (AWD 4-EAT). The pro car uses 30 lbs of ice per quarter mile pass in its intercooler.


Sorry to bore you with this stuff.


Listeroid Engines / Re: Water injection to clean combustion chamber ?
« on: March 29, 2009, 02:07:47 AM »
I have been injecting water into carboned up gas engines for years. Just bring the RPM's up let the engines vacuum pull in the water through one of its manifold ports and listen to the engine if it starts to stall stop the flow or you can use a metering device like a valve or orifice. The powers of steam are unbelievable.After the engine dries out awhile and is running smooth giver a few revs and let her idle. Your job is done. Clean as a whistle.

just my two cents.


 rcavictim, THANK YOU FOR THE HEADS UP! It took a lot of courage to talk about your accident. What is good is that you have a plan to not have it happen again. Hope your convalescence is short. Enough said.

Thanks again.

General Discussion / Re: Serious MPG
« on: March 22, 2008, 07:42:47 PM »
 If I may give you a little advise. Pick up a replacement distributor and a NEW pick up coil. Those two parts are the week link in that engine. The dist will get what is known as red death in it and then the shaft will contact the pick up coil and fail. This is caused by a lack of oil when the engine is frequently stopped and started and not aloud to run at a higher rpm to get oil circulated to the dist bearing.

Also the size of the dist and the size of the pick up coil cause a real estate issue in the tiny area. This causes the pick up wire leads to be bent in a tight radius and causes them to fatigue from repeated advance/retard cycles. Also if you have an old engine or a rebuilt one you need to re-torque the cyl heads after the first start up cycle and then at 1000 miles. Also adjust the valves at first start up cycle and at 1000 miles and every 7500 mile service after. Change the oil  every 3000 miles or less with a good  10W-30 or 10w-40 blended oil and it will out live you. NOTE DO NOT USE PENNS OIL IN IT!! Our tests did not turn out good with it in the EA81 engines. Other Subaru engines no problem just not the EA81

As a funny side note the same vehicle with an EA71 1600cc engine was actually  quicker  than  the same car with an EA81.

If you need any Technical help feel free to PM or email me.


General Discussion / Re: Serious MPG
« on: March 22, 2008, 06:26:09 PM »
 I partially agree a 2.5L DOHC will for the most part bend the valves but not usually hurt the pistons or the head if it looses the belt. The issue is the valve angles of the Pent head design. If the intake is open and the exhaust opens the faces will hit. As a note the 2.0L DOHC will do the same.

If your friend’s vehicle lost a belt before the service interval it is most likely that one of the idler pulleys or water pump failed. If the coolant isn’t changed as per the book the pump bearings will fail prematurely. The other idlers will fail if the vehicle has had water invade the belt cover area. The belt will sling it around and force it into the bearing dust seals.

Under normal conditions it is very, very rare for a belt to just break.

If you PM me I can help you get your timing belt   R&R time down to about 40 minutes ;)

General Discussion / Re: Serious MPG
« on: March 22, 2008, 04:40:13 PM »
If you want to take it a step further the EJ 2.0 and 2.5 turbo models are the way to go for power to weight ratio. They only way in full dress about 275 lb and make 227 and 305 hp respectively. They can make huge amounts of hp when pushed. On a stock block and pistons the 2.5 turbo's will stay together quite well at 450 to 500 hp.
 I think the new diesel is coming in at about 310lbs but it is still a ways off in the US. I think it should fit in the same footprint as the 2.5 Turbo models, Legacy, STI, Forester.

If pushed to the limit EJ2.5  will make about 1450 hp on methanol and about 1250 on Race fuel. Think about that on a three-wheeler.

The one problem with using these engines is that they don’t have a front wheel drive trans to bolt to. You can modify an AWD trans to work though it is a bit bigger. An older legacy /Impreza FWD trans will fit but they stopped making them around 1996 in the US.

To see some high MPG Subarus go to the addresses below.

Google: Subaru Alex Tremulis x100       to see a Three wheel 100mpg Subaru.
Google: Subaru peek in the attic          to see a high 60-mpg car the productin Subaru 360

Go to You Tube and type in      8.02 @ 174 MPH ESX Subaru    to see a 1250 hp EJ 2.5 turbo in action. If you listen closely you will note that the car leaves the line on engine vacuum doesn’t make any boost until after the 60FT mark. Also of note is that was a test pass at only 30PSI of boost. The fuel miliage on that pass was about 5 gallons per mile.


 Subaru has an unbelievable gasoline engine hybrid system that can get 47+ mpg and still make 247 hp. The place that the flywheel would normaly be houses a linear power/starter/charger/braking motor. But we won't see it for a long time because Toyota temporarily purchased the rights to our battery technology (NEC). The battery tech is unbelievable.   You can charge a discharged battery (-30%) to 90+ percent in 15 minutes and 100+% in 20 minutes. Nobody else can do that yet. And now some Toyotas are being built in the (SIA) Subaru Indiana plant.

On the CVT side, Subaru had an (ECVT) Electronically Controlled Variable Transmission back in 1987 in the Justy and we used it until 1994 until we sold that technology to Nissan. Back in the day, the Justy ECVT was getting 36 to 43 actual mpg and the 4WD ECVT version about 3 mpg less. The trans was really neat in that the belt was not conventional; it was made up of 256 segments held together by 8 flat bands. What is really ingenious about it is it pushed the  drive pulley instead of pulling it. Think about the technology that it took to keep the belt tight enough to not slip but loose enough to ratio up and down the pulley. Slick as snot on a doorknob!

 The simple Japanese b--tards even put a high performance mode on it for what they called sport driving. Yeh, sport driving from a three cylinder three valve per cylinder fuel injected 77hp engine. NOT!

 In 1989, we did take one Justy and lowered it, de-stroked it to 966cc, took the balance shaft out, machined a cam that made power at 10,000 rpm and up, put three Makuuni carbs on it, and a coffee can for a fuel cooler along with a Pampers diaper box for an air intake box in the cowl and a piece of hardware store flexible dryer hose and then set the Bonneville I-production record at 124.23 mph. On the first day we set the record at 117.86, but that was before the Pampers box and dryer hose and coffee can fuel cooler. With the second day came the big numbers.  On the first out and back pass, it went 124.23 mph with the engine twisting 11,930 rpm. Then it all went south and the engine lost a cylinder or so we thought. So with a record some twelve mph faster than ever before, they went home.

Come to find out 5 years ago that the engine didn’t go away. I had to get it running for a news article and so I had to put it all back together. What we thought was a cylinder failure turned out to be that a screw had fallen out of one of the carb bell cranks. So when the engine was idling, it ran on all three cylinders but off of idle it would lose a cylinder, because that set of throttle plates wasn’t opening.

Just a note, the record is still held today by the Justy and it was all done by a bunch of DIY guys on thier own time and money after work at our R&D center. Fun stuff if that’s your cup of tea.I know it is mine


Subaru had a gas engine powered vehicle in 1968 that got about 62 or 67 mpg at 55mph but that thing was a death trap.Four strong guys could pick it up and carry it away.
In the Subaru of america attic/museum their is a vehicle that went 100 mile on a gallon of gas at 55 mph. It was designed by Alex Tremulus. (sorry about the spelling).

 As of this writing we don't have any  diesels in our attic yet.

Everything else / Re: Tools
« on: February 29, 2008, 10:59:11 AM »
Nice find, thanks for the info.


Listeroid Engines / Re: Residential Silencer - Underground !
« on: February 27, 2008, 01:18:37 AM »
 Anybody think the same setup would work on the intake side? It would have to be three or so inch piping to keep from creating a vacuum condition.


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