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Author Topic: Heating/ Compression issue????  (Read 10897 times)

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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #15 on: August 16, 2014, 11:47:17 PM »
Freud, I'd follow your advice, but I'm afraid if I do this, then you'll want to give us fashion advice!

I'm not sure having a naked crew running around would work too well......;-)
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

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http://youtu.be/89rVb497_4c

Offline Freud

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Re: Heating/ Compression issue????
« Reply #16 on: August 16, 2014, 11:49:35 PM »
I could always hang out to help.

FREUD
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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #17 on: August 16, 2014, 11:55:08 PM »
LOL!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Gman

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Re: Heating/ Compression issue????
« Reply #18 on: August 17, 2014, 12:08:14 AM »
Buddy, Google Radkitplus for the vacuum filling tool sold by snap on.  It's the easiest way to completely fill a system that I know.  Same tool is also sold by a company called Airlift.  On many late model cars it's the only way to fill them. 
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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #19 on: August 17, 2014, 12:09:51 AM »
Gman, thanks!!!!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline desotoman

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Re: Heating/ Compression issue????
« Reply #20 on: August 17, 2014, 12:30:24 AM »
Buddy,

What was the final blow for my Street Roadster I ran at El Mirage was core shift. Motor ran fine for two seasons, then the beginning of the third season I started to get water in the oil. Then at one of the races the car did not want to start at the line, but ran fine 5 minutes earlier. Finally got it going but I swore it was hydraulic-ed. Well I tore that motor down and could not find any signs of a water leak, that is until I filled the empty block with water and pressurized it. Then I found the water leak as it dripped down from the front side of a cylinder about half way down, and it was just a drip. I have a dental tool and I put it down the cylinder where the drip was and pushed really hard and now I had a flood. The block was only .030 over. Mine did not leak until pressure built up in the radiator.

So I am wondering if you might have a port leaking air when it gets warm into the water jackets since your motor is under boost and not vacuum and in the video not under pressure build up from the radiator since the cap is not on. Just a thought.

Tom G.
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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #21 on: August 17, 2014, 12:35:28 AM »
Tom, that is entirely possible. I haven't checked the oil pan, so I'll check it tomorrow. I'm just wondering if we hurt the block when we added the nitro.....
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline John Burk

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Re: Heating/ Compression issue????
« Reply #22 on: August 17, 2014, 01:03:25 AM »
How about pressurizing each cylinder , one at a time with air with the piston at the bottom to narrow down the search .
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Offline Milwaukee Midget

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Re: Heating/ Compression issue????
« Reply #23 on: August 17, 2014, 01:08:24 PM »
NOTE - THIS IS NOT A RECOMMENDATION.

We did an experiment in junior high school where we made hydrogen through a chemical reaction.

We captured the hydrogen in a balloon. 

We proved it was hydrogen by igniting it with a match on the end of a stick.

It was really cool.

In a situation such as this, if one were able to safely capture the bubbles in the cooling lines in a similar manner, one might be able to prove if it's air or an air/fuel mixture leaking into the cooling system.

Now the down-side to such an OBVIOUSLY DANGEROUS AND NON-RECOMMENDED EXPERIMENT is that if the engine spits fuel out the exhaust, typical in a high-boost engine with incomplete ignition,  it's likely one would have only eliminated the possibility of air alone in the cooling system.

Of course, I would NEVER RECOMMEND SUCH A DANGEROUS, BUT REALLY COOL EXPERIMENT.

I WOULD ALSO CAUTION ANYBODY ATTEMPTING SUCH AN ILL-ADVISED TEST TO USE THE LONGEST STICK THEY COULD FIND.
« Last Edit: August 17, 2014, 01:14:22 PM by Milwaukee Midget »
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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #24 on: August 17, 2014, 03:43:24 PM »
Ok, I burped this for 2.5 hours- took forever to get all of the air out. Fired it up and started getting air at 2 min. Put the cap on at 4 min and ran it 9. 5 min then ran out of fuel- temp ess 210 passenger, 195 driver- left pump running to cool engine off, but system boiled enough water out that pump quit pumping


So, is this simply a burping/ pump issue? Strange that we got air at 2 minutes even though temp was about 150- engine stated cooler lomger , but amount of air didn't change.  Possible intake leak into water?

Test did not show air to be exhaust/ compression
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline manta22

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Re: Heating/ Compression issue????
« Reply #25 on: August 17, 2014, 04:20:41 PM »
It sounds like you are using an electric water pump; are you absolutely certain that it is circulating the water at a decent rate? Maybe there is little or no water circulation in the heads. Water temp is measured by the instruments but not the water temp in the heads.

Regards, Neil  Tucson, AZ
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Regards, Neil  Tucson, AZ

Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #26 on: August 17, 2014, 04:24:55 PM »
Neil, At this point I'm only certain that something is very different than the past!

The pump seems to be fine, but those test are without the engine running, and no pressure. I'm looking at switching pumps, to see if this on is just old and tired, it has an intermittent issue
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Richard 2

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Re: Heating/ Compression issue????
« Reply #27 on: August 17, 2014, 07:09:58 PM »
Buddy, Have you done a leak down test since the Nitro?
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Offline 38flattie

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Re: Heating/ Compression issue????
« Reply #28 on: August 17, 2014, 07:14:59 PM »
Yes- 6 cylinders are 0-2%, and 2 cylinders are at 4%
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Stainless1

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Re: Heating/ Compression issue????
« Reply #29 on: August 17, 2014, 07:21:09 PM »
leak em again, but with the pistons on the bottom of the stroke.... go slow and circulate water while you do it and watch for air....
Good luck Buddy... this one is a head n butt scratcher  :|
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