1.6 B6 Engine Rebuild - Slow Progress
#21
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I hear ya, unfortunately all the other spare heads I have that are not currently on my car look like this.
... and need at least new valves.
I'm thinking if I'm going to go ahead and put some work into the head, I might as well go all the way and make it big valve, big cam, ect.
... and need at least new valves.
I'm thinking if I'm going to go ahead and put some work into the head, I might as well go all the way and make it big valve, big cam, ect.
#29
Ben, with you current engine build how much HP can this motor handle safely. You had the pistons ceramic and dry film coated, but used stock pistons. How does this help or compare to say wiseco any other performance pistons? With good headwork, can the 1.6 ever put down 300HP?? I am gathering parts for my 1.6 build but not sure what parts I want to use. I do know that I will have all the head work done. All I got right now with a spare 1.6 is some ETD rods, and was thinking to go the same route as you if I can save some money keeping stock pistons and coating them. Just wonder if this is a good idea.
#30
Forged pistons give you a margin of error with tuning high boost that you will not get with a stock cast piston. They are more forgiving in the sense that if you detect knock at 20psi and lift immediately you can probably save your motor. With stock cast pistons the ring lands would be in multiple pieces. Also with forged you get the added benefit that the ring lands have been designed thicker from the start. Couple that with a stronger material and they can take quite a beating (including handle more power).
That said, with a good tune, stock pistons are not the weak point in our motor or just about any NA stock motor. The rods will be the first thing to break if everything else is properly prepared and tuned. Truth be told, no on knows how much the stock pistons can handle before the HP cracks the ring lands from brute force. Any numbers anyone gives you will be pure conjecture. Also it will be tough to find it out in the future because the the large majority do not want the larger, laggy turbo that will be required to find out. Those that do will have already invested the forged pistons into their build beforehand anyway.
I personally believe that stock pistons can handle 300whp in stride.
That said, with a good tune, stock pistons are not the weak point in our motor or just about any NA stock motor. The rods will be the first thing to break if everything else is properly prepared and tuned. Truth be told, no on knows how much the stock pistons can handle before the HP cracks the ring lands from brute force. Any numbers anyone gives you will be pure conjecture. Also it will be tough to find it out in the future because the the large majority do not want the larger, laggy turbo that will be required to find out. Those that do will have already invested the forged pistons into their build beforehand anyway.
I personally believe that stock pistons can handle 300whp in stride.
#31
Might be a stupid question, but just wondering to avoid the big laggy turbo to reach more HP why not use high compression pistons along with less laggy and smaller turbo? Since turbo motors tend to use low compression pistons to allow for more psi, why not use a little higher compression piston and less psi to get the same amount of HP without the lag of a bigger turbo? As long as the pistons are forged they should be able to handle it?
#32
High compression pistons lower your margin of error in boosting. They narrow your window for an "off" tune, increasing the chance of detonation if your tune is off of "correct". Additionally, a single point increase of compression does not increase you power nearly as much as an additional pound of boost. Therefore it is smarter to run lower compression so that you can run more boost vs high compression low boost. In fact there is no contest in the comparison. the later will make much more power ON PUMP GAS.
Also, no one even bother arguing that high compression spools your turbo faster. That is internet hearsay and has been proven by dynoing and logs that there is negligible difference in spool. If you want to spool faster then you need to decrease back pressure and increase flow through your head, PERIOD.
Also, no one even bother arguing that high compression spools your turbo faster. That is internet hearsay and has been proven by dynoing and logs that there is negligible difference in spool. If you want to spool faster then you need to decrease back pressure and increase flow through your head, PERIOD.
#34
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High compression pistons lower your margin of error in boosting. They narrow your window for an "off" tune, increasing the chance of detonation if your tune is off of "correct". Additionally, a single point increase of compression does not increase you power nearly as much as an additional pound of boost. Therefore it is smarter to run lower compression so that you can run more boost vs high compression low boost. In fact there is no contest in the comparison. the later will make much more power ON PUMP GAS.
Also, no one even bother arguing that high compression spools your turbo faster. That is internet hearsay and has been proven by dynoing and logs that there is negligible difference in spool. If you want to spool faster then you need to decrease back pressure and increase flow through your head, PERIOD.
Also, no one even bother arguing that high compression spools your turbo faster. That is internet hearsay and has been proven by dynoing and logs that there is negligible difference in spool. If you want to spool faster then you need to decrease back pressure and increase flow through your head, PERIOD.
#35
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Ben, with you current engine build how much HP can this motor handle safely. You had the pistons ceramic and dry film coated, but used stock pistons. How does this help or compare to say wiseco any other performance pistons? With good headwork, can the 1.6 ever put down 300HP?? I am gathering parts for my 1.6 build but not sure what parts I want to use. I do know that I will have all the head work done. All I got right now with a spare 1.6 is some ETD rods, and was thinking to go the same route as you if I can save some money keeping stock pistons and coating them. Just wonder if this is a good idea.
I'm not trying to break any records with this motor. I'd be happy with a solid 240 to the wheels. But I don't want cold slap, and I want another 100K mile daily driveable motor.
If I was shooting for 300+rwhp I'd be using forged pistons, a completely worked over head with about $3k dumped into it, and a much different turbo. Really not worth it to me. I think I'm going v8 on the next major build.
As it is I'll have less than $3k in this whole build when it's said and done.
#36
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I'm not trying to break any records with this motor. I'd be happy with a solid 240 to the wheels. But I don't want cold slap, and I want another 100K mile daily driveable motor.
If I was shooting for 300+rwhp I'd be using forged pistons, a completely worked over head with about $3k dumped into it, and a much different turbo. Really not worth it to me. I think I'm going v8 on the next major build.
As it is I'll have less than $3k in this whole build when it's said and done.
If I was shooting for 300+rwhp I'd be using forged pistons, a completely worked over head with about $3k dumped into it, and a much different turbo. Really not worth it to me. I think I'm going v8 on the next major build.
As it is I'll have less than $3k in this whole build when it's said and done.
#37
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I easily do 10+ track days a year with my current motor. That's why I plan to only run about 240ish, instead of going for an internet fame dyno build.
Your build looks to be a killer deal for what you're getting. Though reviewing the price list I posted earlier, I think I'm gonna be well under the 1500 mark.
Your build looks to be a killer deal for what you're getting. Though reviewing the price list I posted earlier, I think I'm gonna be well under the 1500 mark.
#38
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I easily do 10+ track days a year with my current motor. That's why I plan to only run about 240ish, instead of going for an internet fame dyno build.
Your build looks to be a killer deal for what you're getting. Though reviewing the price list I posted earlier, I think I'm gonna be well under the 1500 mark.
Your build looks to be a killer deal for what you're getting. Though reviewing the price list I posted earlier, I think I'm gonna be well under the 1500 mark.