Valve seat materials
10-22-2016, 11:29 PM
#11
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Looks like Redline changed their product.
https://www.amazon.com/Red-Line-6020...ead+substitute
https://www.amazon.com/Red-Line-6020...ead+substitute
Hey, folks - Be careful!
I just received a big order assuming this was the same product I have been buying for over ten years.
Imagine my surprise when the 12 ounce bottles now said "One bottle treats 25 gallons" as opposed to the Redline I had been buying in the past that said "One ounce treats 10 gallons" - Even though the Redline product number (60202) hadn't changed!
I called Redline and talked to their chief technical guy (Dave Somebody) who somewhat sheepishly admitted that the formulation had changed and that one bottle now treated just 25 gallons instead of treating 120 gallons.
How they can do this without changing the product number (60202) is beyond me.
Talk about unethical behavior and greed!!!!!
For gosh sakes, at least change the product stock number if you have any ethics at all!!!!!
How pathetic when greed comes into play - this is already a very successful company so they certainly didn't raise the price in order to survive!
Just greed - I'm changing suppliers on just principle!
I just received a big order assuming this was the same product I have been buying for over ten years.
Imagine my surprise when the 12 ounce bottles now said "One bottle treats 25 gallons" as opposed to the Redline I had been buying in the past that said "One ounce treats 10 gallons" - Even though the Redline product number (60202) hadn't changed!
I called Redline and talked to their chief technical guy (Dave Somebody) who somewhat sheepishly admitted that the formulation had changed and that one bottle now treated just 25 gallons instead of treating 120 gallons.
How they can do this without changing the product number (60202) is beyond me.
Talk about unethical behavior and greed!!!!!
For gosh sakes, at least change the product stock number if you have any ethics at all!!!!!
How pathetic when greed comes into play - this is already a very successful company so they certainly didn't raise the price in order to survive!
Just greed - I'm changing suppliers on just principle!
10-23-2016, 07:08 AM
#13
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We used to run Copper Beryllium in Oval Track Engines , stopped because of wear and health affects . Moved to a Copper Alloy with DLC Coated Ti Valves .
Some of the Dirt Oval guys are running some kind of seat coated with TiCN to keep the wear down.
Some of the Dirt Oval guys are running some kind of seat coated with TiCN to keep the wear down.
10-23-2016, 07:14 AM
#14
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iTrader: (2)
Some of us younger folks are lead advocates. If it wasn't a vital lubricant / octane booster I think they would have removed it from AV gas completely. Let's be real about lead. Everyone worries about the health problems that could be associated with lead (which is a myth) however we have airplanes flying over head burning tons of leaded fuel. Gravity tells me that all the exhaust emissions from an airplane is going to fall right on top of me. But yet I don't have lead poisoning... :-)
10-23-2016, 08:35 AM
#15
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I bought a brand new set of Brodix heads 2 seasons ago. At the end of the second season the engine started running poorly and was down on power. Did a leakdown and all cylinders were leaking between 30-60% out of the exhaust valves. Pulled the heads and the exhaust seats were beat to death. Had around 70 hrs on them. I don't know what the seat material was, but it didn't work very well in my little blower motor. Brodix has the castings back in their possession right now and are going to put in some better seats they said. If I can find out what they are putting in, I will post it here. In all fairness though, I did get a half tank of 87 octane at a marina in TN by mistake shortly before it started running bad. The knock sensor may have removed so much timing that the EGT's went through the roof. The Manley extreme duty valves held up perfectly though.
10-23-2016, 08:59 AM
#16
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iTrader: (3)
Some of us younger folks are lead advocates. If it wasn't a vital lubricant / octane booster I think they would have removed it from AV gas completely. Let's be real about lead. Everyone worries about the health problems that could be associated with lead (which is a myth) however we have airplanes flying over head burning tons of leaded fuel. Gravity tells me that all the exhaust emissions from an airplane is going to fall right on top of me. But yet I don't have lead poisoning... :-)
10-23-2016, 10:55 AM
#18
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iTrader: (1)
Maybe thicker seat margins should be used ?
Last edited by SB; 10-23-2016 at 10:57 AM.
10-23-2016, 11:02 AM
#19
I would think the thicker seat cuts, would cool the valve better, as now the heat is being transfered from the valve to the seat more efficiently. While that may lower the temperature of the valve itself, I don't know if it will lower the temperature of the seat. Maybe even increase the temperature of the seat?
Modern engines put much higher levels of thermal and mechanical stress on valve seat inserts. To handle the more severe conditions within these new generations of engines, the OE-Manufacture is equipping them with high tech sin-tered valve seat inserts.
The normal cast iron valve seat will not adequa-tely withstand the demands of this new engine environment.
The normal cast iron valve seat will not adequa-tely withstand the demands of this new engine environment.
10-23-2016, 11:04 AM
#20
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