Boost Works Turbo tC Build TRACK VIDEO
05-17-2011, 04:23 AM
#321
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on low boost stock engine, u should see very minimal if any at all (blow-by). Once u put about 45k boosted miles, it's possible to see more oil than normal but it's still not gonna be a lot. The most oil I have collected was about 3oz in a total of 14k miles, engine has around 27k. I have it connected to the rear pcv, the one to the intake is always clean with no oil out of there.
Like Brett mentioned, build engine is different. Have you guys seen one of the Rado's vids where they where filling up their humongous oil catch can and had to install another one to prevent it from over flowing? It was a new engine, but heck the way they run the car it better have the room for expansion.
Like Brett mentioned, build engine is different. Have you guys seen one of the Rado's vids where they where filling up their humongous oil catch can and had to install another one to prevent it from over flowing? It was a new engine, but heck the way they run the car it better have the room for expansion.
05-17-2011, 09:38 AM
#322
Just low boost for the most part, car hasnt seen boost over 14psi. 7-8 daily. I thought so no blowby is fine, it just makes me wonder all boosted guys i know gets a good amount on theirs... Or maybe its just my catch can design not so good in trapping vaporized oil
Just pulled out the motor yesterday, its pita to pull out lol.. will be putting it together soon all i need is free time.
Just pulled out the motor yesterday, its pita to pull out lol.. will be putting it together soon all i need is free time.
i hear that...my car is on the back burner..im ready to install all my new goodies but just dont have the time.
05-17-2011, 09:58 AM
#323
ok, there seems to be some confusion about blow by around here, so let me explain a few things. blow by is not necessarily a bad thing. it can be a sign of engine wear or damage on parts like piston rings or ringlands. it can also be a sign of cylinder wall scoring or wear. however, its usually only something to worry about if you notice a sudden increase in the amount of blow by you have.
the amount of blow by a car has is dependent on a many different factors. the two most important ones are piston to wall clearance and ring gap. when building a motor to handle high boost or n2o, these clearances need to be on the high side, thus resulting in more blow by. this is due to the fact that when metal heats up, it expands. im sure we can all understand this concept. the more boost or nawz you throw into the mix, the more heat it will produce, thus more expansion. as the pistons and rings expand, they put more stress on all components of the rotating assembly as well as the cylinder walls. to much expansion will destroy your motor plain and simple.
one way that engine builders combat this is to run a higher piston to wall clearance and ring gap, also know as having a loose motor. this will allow enough room for everything to expand and achieve its maximum seal under high load conditions. this is also the reason that many built motors have loud piston slap, and the reason why srt-4s can run 400+ whp and 11 second 1/4 mile passes while having 175k on the clock. many companies also sell pistons made out of lower expanding metals like 4032 aluminum.
another factor of blow by is how much you are boosting. i would say at least 90% of the boosted tc's on this site are running between 8-12 psi. trd07tc is running 24 psi. so when you see all this blow by in his video don't freak out. remember its a brand new built motor, there's nothing wrong with it. im sure he built the motor like that for a reason.
the amount of blow by a car has is dependent on a many different factors. the two most important ones are piston to wall clearance and ring gap. when building a motor to handle high boost or n2o, these clearances need to be on the high side, thus resulting in more blow by. this is due to the fact that when metal heats up, it expands. im sure we can all understand this concept. the more boost or nawz you throw into the mix, the more heat it will produce, thus more expansion. as the pistons and rings expand, they put more stress on all components of the rotating assembly as well as the cylinder walls. to much expansion will destroy your motor plain and simple.
one way that engine builders combat this is to run a higher piston to wall clearance and ring gap, also know as having a loose motor. this will allow enough room for everything to expand and achieve its maximum seal under high load conditions. this is also the reason that many built motors have loud piston slap, and the reason why srt-4s can run 400+ whp and 11 second 1/4 mile passes while having 175k on the clock. many companies also sell pistons made out of lower expanding metals like 4032 aluminum.
another factor of blow by is how much you are boosting. i would say at least 90% of the boosted tc's on this site are running between 8-12 psi. trd07tc is running 24 psi. so when you see all this blow by in his video don't freak out. remember its a brand new built motor, there's nothing wrong with it. im sure he built the motor like that for a reason.
thank you brett for yet again providing good info to the community...Id like to add that most (all that iv seen so far but hey ill leave it open) piston makers provide you with full specs of pistons as well as a guide on setting ring end gaps. if you visit their site youll see explinations of end gaps and blow by, so its not rocket science.
http://www.cp-carrillo.com/LinkClick...Ls%3d&tabid=74
05-17-2011, 03:10 PM
#324
Large amounts of blow by are not acceptable for high performance cars and engines. Why? Let me answer briefly....
Blow by occurs when the combustion of the engine forces it's way past the rings of the piston into the crankcase. This effectively is a loss in compression and I should not have to remind all of you that compression = power.
This loss in compression yields less power, poor fuel economy and effectively dilutes the oil value you use making it more prone to catastrophic failure.
Also, if the oil vapor from the crank case mixes with the combustion cycle fuel, this dilutes the octane value of the gas making it more prone to detonation. Need I say more?
Blow by occurs when the combustion of the engine forces it's way past the rings of the piston into the crankcase. This effectively is a loss in compression and I should not have to remind all of you that compression = power.
This loss in compression yields less power, poor fuel economy and effectively dilutes the oil value you use making it more prone to catastrophic failure.
Also, if the oil vapor from the crank case mixes with the combustion cycle fuel, this dilutes the octane value of the gas making it more prone to detonation. Need I say more?
05-17-2011, 03:28 PM
#325
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Large amounts of blow by are not acceptable for high performance cars and engines. Why? Let me answer briefly....
Blow by occurs when the combustion of the engine forces it's way past the rings of the piston into the crankcase. This effectively is a loss in compression and I should not have to remind all of you that compression = power.
This loss in compression yields less power, poor fuel economy and effectively dilutes the oil value you use making it more prone to catastrophic failure.
Also, if the oil vapor from the crank case mixes with the combustion cycle fuel, this dilutes the octane value of the gas making it more prone to detonation. Need I say more?
Blow by occurs when the combustion of the engine forces it's way past the rings of the piston into the crankcase. This effectively is a loss in compression and I should not have to remind all of you that compression = power.
This loss in compression yields less power, poor fuel economy and effectively dilutes the oil value you use making it more prone to catastrophic failure.
Also, if the oil vapor from the crank case mixes with the combustion cycle fuel, this dilutes the octane value of the gas making it more prone to detonation. Need I say more?
05-23-2011, 12:44 AM
#334
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12.3 @ 124. Serious traction issues. Will post more when I get home.
Transmission has some interesting new noises.
Also had some complications with my Ichiba wheel studs
More info soon
Transmission has some interesting new noises.
Also had some complications with my Ichiba wheel studs
More info soon
05-23-2011, 02:13 AM
#336
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05-23-2011, 02:19 AM
#337
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Free rev - dont like the 2 step on the emanage at all I will not be using it.
Brett - its all types of noises im going to pickup another trans
I was not getting any traction until 4th gear.
Brett - its all types of noises im going to pickup another trans
I was not getting any traction until 4th gear.
05-23-2011, 02:51 AM
#339
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8 - 8.5 psi
will scan some slips tomorrow
working on the videos now its taking a bit
had a SERIOUS issue with my ichiba wheel studs we'll see what they have to say before I make a thread
will scan some slips tomorrow
working on the videos now its taking a bit
had a SERIOUS issue with my ichiba wheel studs we'll see what they have to say before I make a thread
05-23-2011, 02:55 AM
#340
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What RPM were you trying the 2step at? If it's not above 4k rpms then it's not going to work out to great. I think that's across the board though, don't matter what 2step it is.