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Alpha to Omega
I did t compression test to day >:(
Cyl#1 Cold 90psi Hot 90psi wet 95psi Cyl#2 cold 169psi Hot 175psi Cyl#3 cold 165psi Hot 185psi Cyl#4 cold 190psi Hot 185psi Do i need to say any more.Time for new pistons. __________________ |
Re: The Joy's of a Boost
What a drag. How many miles are on the motor?
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Re: The Joy's of a Boost
Originally Posted by Skaterdudz02
What a drag. How many miles are on the motor?
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Re: The Joy's of a Boost
shitty, Time for better pistons and more boost!!!
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Re: The Joy's of Boost
that sucks bro..I know with my b20a i saw the same results twice.. Rebuilt it the first time. Sold it to u the second time lol.. I would always know too. I would pop my hood to see TONS of oil that had shot out of my breather on the valve cover from all the blow by from the cracked ringlands. I feel u bro. Hope u get it back together asap! good luck!
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Re: The Joy's of Boost
Originally Posted by b20accord
that sucks bro..I know with my b20a i saw the same results twice.. Rebuilt it the first time. Sold it to u the second time lol.. I would always know too. I would pop my hood to see TONS of oil that had shot out of my breather on the valve cover from all the blow by from the cracked ringlands. I feel u bro. Hope u get it back together asap! good luck!
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Re: The Joy's of Boost
I don't know if this will help but i did it anyways :6
Before http://i109.photobucket.com/albums/n...d/DSCN7523.jpg cleaned http://i109.photobucket.com/albums/n...20aPiston1.jpg After ( polished ) http://i109.photobucket.com/albums/n...B20aPiston.jpg |
Re: The Joy's of Boost
i don't see how that could hurt anything. might actually help against detonation because your getting rid of any deposits on the piston
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Re: The Joy's of Boost now with polished Pistons
they look sexy
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Re: The Joy's of Boost
Originally Posted by onlyflash944
i don't see how that could hurt anything. might actually help against detonation because your getting rid of any deposits on the piston
Polished surfaces could lead to hot pieces of carbon flaking off and leading to detonation, or worse. |
Re: The Joy's of Boost now with polished Pistons
Here #1 piston now you can see why it was only 90psi
http://i109.photobucket.com/albums/n.../Badpiston.jpg |
Re: The Joy's of Boost now with polished Pistons
Originally Posted by TwoLoudnproud
Here #1 piston now you can see why it was only 90psi
http://i109.photobucket.com/albums/n.../Badpiston.jpg |
Re: The Joy's of Boost now with polished Pistons
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Re: The Joy's of Boost now with polished Pistons
dont polish them. take them and hit the tops with a sandblaster. beaded glass will give it the perfect finish.
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Re: The Joy's of Boost now with polished Pistons
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Re: The Joy's of Boost now with polished Pistons
^^^^ i was gonna point out to that one good stuff..
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Re: The Joy's of Boost now with polished Pistons
it probably stress relives them as well
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Re: The Joy's of Boost now with polished Pistons
You could have posted this like two ------- days ago before i put them in :1 oh well they are in now but i did remove a the sharp edges on the piston's O0
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Re: The Joy's of Boost now with polished Pistons
nah,
just pour some sand down your plug holes. rev it till vtac kicks inn and you should be pretty |
Re: The Joy's of Boost now with polished Pistons
Originally Posted by drunkinmaster1
dont polish them. take them and hit the tops with a sandblaster. beaded glass will give it the perfect finish.
I don't think glass bead belongs anywhere near the internals of an engine. simple sand paper will do the trick. |
Re: The Joy's of Boost now with polished Pistons
I did a new compression test to day
Cyl#1 Cold 170-psi Hot 174-psi Cyl#2 cold 170-psi Hot 175-psi Cyl#3 cold 170-psi Hot 175-psi Cyl#4 cold 170-psi Hot 175-psi SWEET |
Re: The Joy's of Boost now with polished Pistons
where's the burnout vid?
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Re: The Joy's of Boost now with polished Pistons
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Re: The Joy's of Boost now with polished Pistons
Sucks man - I don't polish them either in fact we shoot with aluminum oxide to rough them up just right (120 grit).
The valve reliefs I don't worry about on my forged pistons as even though the surface of a CNC piston is "mirror" like its actually the right texture its just that you're seeing the polish of cutting fluid and tool head. But definitely don't go and polish them. |
Re: The Joy's of Boost now with polished Pistons
Originally Posted by ifly87
where's the burnout vid?
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Re: The Joy's of Boost now with polished Pistons
not bad but i had better dirty seconds :). What r you on like 8psi?
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Re: The Joy's of Boost now with polished Pistons
actually if you go to ur local machine chop(if thyre decent) u can have them media-blast them. u dont want them polished because it will slow atomization down.
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Re: The Joy's of Boost now with polished Pistons
Ringlands are for the weak
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Re: The Joy's of Boost now with polished Pistons
Originally Posted by Turbocharged Innovation
actually if you go to ur local machine chop(if thyre decent) u can have them media-blast them. u dont want them polished because it will slow atomization down.
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Re: The Joy's of Boost now with polished Pistons
Do what all successful racers do - hit them quickly with some scotch-brite pads to debur them, and move to the next step in life. But then again, successful racers use FORGED slugs, so maybe you're preceding in your wrong way correctly (lol) by polishing cast pistons. I think that last ass-hattery comment makes sense.
BTW is that a B20A? That's a whole different sort of fail, for that matter. :4 |
Re: The Joy's of Boost now with polished Pistons
Here the last run of my turbo B20a before i pulled and sold it the next day.
http://i109.photobucket.com/albums/n...astrunB20a.jpg |
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