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#180
by
Alcaid
on 16 Sep, 2015 01:10
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If you want it to last you need to back off the boost. You are overspooling it and back pressure is probably very high as well. Unless you are running a 12mm pump you are out of fuel a long time ago anyway
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#181
by
mark3kid
on 16 Sep, 2015 14:25
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What will break? The turbo?
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#182
by
Alcaid
on 16 Sep, 2015 14:40
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Yep, and worst case your engine due to excessive EGT and PCP
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#183
by
mark3kid
on 16 Sep, 2015 14:44
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I thought these turbos could handle high boost like that?
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#184
by
Alcaid
on 16 Sep, 2015 15:01
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50psi is a PR of 4.5, not even a HX40 Super will do that without overspooling (too high rpms = too high compressor wheel tip speed)
50 psi is compound territory if you want it to last
Besides you are not even close at having the fuel needed so you are actually getting worse performance that what you will get with lower boost
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#185
by
mark3kid
on 16 Sep, 2015 15:14
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So lower the boost to like 40? And I'll most likely have more power
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#186
by
Alcaid
on 16 Sep, 2015 15:46
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Lower boost until it smokes slightly on full boost. Then add boost until it just clears. No need to run more boost than what you have fuel for
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#187
by
mark3kid
on 16 Sep, 2015 16:54
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That's what I had originally something is different with this new motor. My old one maxed out at 42psi and just cleared the smoke up
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#188
by
mark3kid
on 16 Sep, 2015 19:13
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Do you think 40-45 is good?
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#189
by
vanbcguy
on 16 Sep, 2015 19:34
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Really that's excessively high for these engines. To get boost pressure that high you're creating massive back pressure; your turbo is probably taking 60-80 PSI to create that 40-45 PSI. Unless you've got a heavily modified pump with a huge head on it and a massive intercooler (and I mean massive, you are probably looking at 200°C air coming out of your turbo right now) you're just hurting your engine without making any more power. Lots of folks have 200ish HP TDI engines at around 30ish PSI, you aren't likely to make that much power on an IDI without blowing the prechambers out of the head.
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#190
by
mark3kid
on 16 Sep, 2015 20:03
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Yeah. I mean I have been kinda hard on the engine. It holds this boost pretty good. I have probably 30 pulls on it at this much boost and it acts the same each pull. Not sure why its making more then ever though. It's weird I never changed anything and before it just made 40
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#191
by
Alcaid
on 17 Sep, 2015 06:54
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Lots of folks have 200ish HP TDI engines at around 30ish PSI, you aren't likely to make that much power on an IDI without blowing the prechambers out of the head.
TDI and IDI is not comparable when it comes to boost or fuel quantity vs. hp. And your last comment is just silly. With the right mods 200hp is easy without prechambers going anywhere.
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#192
by
mark3kid
on 23 Sep, 2015 14:15
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I'm interested to see how much I make. I haven't been driving the car as I'm waiting to dyno it. The guys from around me say max I'll make is 140hp and 240ftq it sure feels like it has alot more power then that but idk
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