Milky oil and alcohol
#123
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Originally Posted by shortyems3307
i remember zip his user name was arussell. and the thread was je piston tech. august 2008
Hey David i ran them once, but never again, in fact i now build with Probe pistons, cheaper than JE, wisco or anyone else and the same 2618 mat'l for a true forged piston.
JMO
Zip.
#124
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Originally Posted by zipper06
Originally Posted by shortyems3307
i remember zip his user name was arussell. and the thread was je piston tech. august 2008
Hey David i ran them once, but never again, in fact i now build with Probe pistons, cheaper than JE, wisco or anyone else and the same 2618 mat'l for a true forged piston.
JMO
Zip.
#125
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Location: Red Deer, AB Canada
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Originally Posted by hammertime
I also remember the topic, I didnt run them before that either though.
Kod, is there any other engine builders or is this someone you've dealt with for years ?
Kod, is there any other engine builders or is this someone you've dealt with for years ?
And on the dyno, this engine kept 8 inches of crankcase vacuum while running gas and built 24 psi pressure on alcohol.
I run a HV billet oil pump and he figures maybe it's putting out too much oil and flooding the valve train area. He mentioned putting oil restrictors in the block to limit the oil getting to the top end.
Initially he thought we needed to speed up the vacuum pump to get rid of the crankcase pressure, which I havent tried yet as I just received the new drive pulley yesterday.
We don't have as many engine builders to choose from in the Great White North. I am just about ready to get this engine running right on gas, sell it and order a Steve Schmitt engine.
#127
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Join Date: Jan 2004
Location: central Illinois
Posts: 459
Milky oil
I believe SRP pistons are 4032 alloy for small blocks and flat top BBC but are 2068 for high compression BBC. I have 2 sets of 496 pistons here and it says on the box and paper work they are 2068. They are a little heavier than the JE and less compression 12.7 versus 13.5 but other than that they are just $200 cheaper.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
#128
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Location: Red Deer, AB Canada
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Originally Posted by hammertime
Did you get a chance to leak it or compression it yesterday ?
If you do bail on this engine and go another route, there is better shops to choice from then Schmidt also :wink:
If you do bail on this engine and go another route, there is better shops to choice from then Schmidt also :wink:
I plan on doing it today if I can find enough time.
#129
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Re: Milky oil
Originally Posted by markdunlap
I believe SRP pistons are 4032 alloy for small blocks and flat top BBC but are 2068 for high compression BBC. I have 2 sets of 496 pistons here and it says on the box and paper work they are 2068. They are a little heavier than the JE and less compression 12.7 versus 13.5 but other than that they are just $200 cheaper.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
#130
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Join Date: Jan 2006
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Re: Milky oil
Originally Posted by markdunlap
I believe SRP pistons are 4032 alloy for small blocks and flat top BBC but are 2068 for high compression BBC. I have 2 sets of 496 pistons here and it says on the box and paper work they are 2068. They are a little heavier than the JE and less compression 12.7 versus 13.5 but other than that they are just $200 cheaper.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
Are your gapless rings top land or second land gapless? Top gapless should leak 2%.
Have you talked to a tech guy at TOTAL SEAL about rings? Has your engine builder?
I have built some alcohol engines both naturally aspirated and blown and the rings and cylinder wall prep was only difference per TOTAL SEAL specs.
I have had to file fit gapless rings as they were not in the range of .010"-.040".
I have also had a guy switch back and forth on a carburated engine and saw no differece as far as blowby. His engine did not have gapless rings.
Zip.
2068 alum.
R.R.56 [1]
Melting point 635°C
Density 2.75
Composition
Copper 2.0%
Nickel 1.3%
Magnesium 0.8%
Iron 1.4%
Titanium 0.1%
Silicon 0.7%
Aluminium 93.7%
2618 alum
Chemistry Data : [top]
Aluminum Balance
Copper 1.9 - 2.7
Iron 0.9 - 1.3
Magnesium 1.3 - 1.8
Nickel 0.9 - 1.2
Remainder Each 0.05 max
Remainder Total 0.15 max
Silicon 0.25 max
Titanium 0.04 - 0.1