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#15
by
dirtydiesel
on 13 Dec, 2010 13:49
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#16
by
dirtydiesel
on 13 Dec, 2010 14:21
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So, since the owner is here. What was dyno numbers and trap speed with old setup? 
I never got dyno numbers as no one in my area had the equipment to dyno a diesel.
my trap speed was 103mph.
launches were at about 1500rpm(a very light launch so i didn't break anything..)
but with 45 PSI out of this turbo i ended up breaking things anyway.
new numbers soon, and more track times after this canadian winter is over.
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#17
by
vanagonturbo
on 13 Dec, 2010 20:13
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Nice to see another rocco TD built! Keep up the good work man! :beer:
here is a shot of mine:
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#18
by
vanagonturbo
on 13 Dec, 2010 22:11
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just noticed this pic. I am not sure if you knew it or not but the engine mount has been installed upside down in the bracket..
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#19
by
MJF
on 13 Dec, 2010 23:50
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So, since the owner is here. What was dyno numbers and trap speed with old setup?
I never got dyno numbers as no one in my area had the equipment to dyno a diesel.
my trap speed was 103mph.
launches were at about 1500rpm(a very light launch so i didn't break anything..)
but with 45 PSI out of this turbo i ended up breaking things anyway.
new numbers soon, and more track times after this canadian winter is over.
You got same speed that I got with my Scirocco
That was with sloooww 2,4 60 feet with street tires and no traction... Time was 14,5 then... Here is one start at that day:
http://www.youtube.com/watch?v=pHGeFUcBda4Why so huge boost? You can get nosmoke power with lower boost.
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#20
by
Smokey Eddy
on 14 Dec, 2010 00:36
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Big turbos aren't complicated. i want to know how you're fuelling it because im at the limit on my pump right now...
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#21
by
dirtydiesel
on 14 Dec, 2010 15:27
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I have a super Giles pump with a 12 mm head . 3 inch custom built exhaust by me and Lindsay . No waste gate and no smoke just a light gray haze , Giles built my pump for boosted fueling 40 psi plus to achieve a smokeless burn .
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#22
by
MJF
on 15 Dec, 2010 00:30
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Why are you not using wastegate
Iīd say youīll get same power with ~30psi and not breaking everything with that huge boost
What does your Scirocco weigh? Mine was heavy with 02A transmission, full interior etc, 2120lbs... Did you have slicks with that 13,5s run? Doesnīt that mesh in turbo inlet limit airflow?
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#23
by
dirtydiesel
on 15 Dec, 2010 03:32
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the air flow meter screen is my air filter. and my car became very explosive from 38 psi and on. it did not have the same pull with only 30psi boost, so i got rid of the waste gate and tried it out and was pleasantly surprised. One more thing with my boost at 45psi my EGT is only 1300 thats the hotest i can get it. so it was a much needed thing to do.if you can match your fueling to your boost go for it. i always say. My car with street tires when i hit boost in 2nd and 3rd gear the car will spin until i shift it or fuel cut hits what ever i do first. the giles cam shaft regrind and the higher boost made it come to life the way i want it.
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#24
by
MJF
on 15 Dec, 2010 04:41
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Maybe it was becouse pump didn't give full fuel until 45psi? That was just my experience from 200whp idi, got more power when dropped boost from 33psi to 29psi. Ofcourse, that was only from buttdyno, didnīt make to wheeldyno before it exploded...
Have you measured EMP?
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#25
by
RadoTD
on 15 Dec, 2010 07:33
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I don't know why some of you keep saying you'll make more power on less boost? Assuming his turbo is efficient enough at that pressure ratio, more boost will shove more air into the cylinder. Yes, it takes power to compress that, but you do get most of the energy of the compression back
Why wouldn't more boost make more power?
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#26
by
theman53
on 15 Dec, 2010 08:10
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I am trying to get my head around it. I think it has to do with higher pressure will "sometimes" mean that the air is hotter coming in, even intercooled. Hotter the air the less volume of O2 in it. That would translate into less room to fuel so less power. Sounds like OP above hadn't got to that point yet
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#27
by
Aki-76
on 15 Dec, 2010 08:27
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jep,less boost donīt mean less power all time...
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#28
by
dirtydiesel
on 15 Dec, 2010 19:11
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True my water meth made a huge difference when I went to the second largest nozzle . Wow is all I can say.
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#29
by
MJF
on 13 Mar, 2011 10:51
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Is new engine running yet?
