Hi everyone this is my first post here. This site is great and very usefull...We'll I have a 1914 engine,296/114lobe cam,044 40/36 heads,dual del's 45(gross jet250,turbo emuls, 33#mod rings,acura fuel pump, malpasi regulator.)Turbo hitachi t3 with .48 and .63 turbine housing with stage2 wheel; I think compresor is .45-.50 don't know..The problem is that the a/f mix goes lean after 3.5K and the car does not make boost. I've checked the bowls, f-preasure, jets 170 air 165gas,. I've even put the stock pump in series with the other and it just does'nt work. The car idles and revs good but, once its moving and I step on it..is like running N/A with a very restrictive muff. The compresed side of the sistem is sealed but still no boost! What can be hapening..?...NEED HELP PLEASE!
If someone had this prob. please help..
BRGS
RED-ONE
1914 hideaway problems..Help needed..
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danimal
- Posts: 958
- Joined: Wed Jun 13, 2001 12:01 am
1914 hideaway problems..Help needed..
>>>The problem is that the a/f mix goes lean after 3.5K and the car does not make boost.<<<
a lean condition sounds like poor fuel pressure... you pretty much cannot use the stock fuel line for either fuel supply or fuel return to the tank, on a turbo acvw.
you MUST get an electronic fuel pressure gauge to monitor conditions under boost... i have a full-sweep(0-50psi) aircraft fuel gauge that uses a stewart warner sender, for about $85.
which c.b. hideaway exhaust system are you using? if it's the old 1.5" o.d., then the i.d. of that system is the same ~1 3/8" that was used in stock 1600cc exhaust system.
i'm not familar with an hitatchi t3(?), but if it puts out more volume than the schwitzer that came originally with the old c.b. exhaust, you could have too much exhaust back pressure.
the correct way to make maximum turbo h.p. is to have the exhaust back pressure be a certain ratio of the intake boost pressure... that means putting a pressure gauge on the exhaust system, just like the boost gauge you have on the intake system.
if there is too much back pressure, you'll get too much flow reversion into the combustion chamber, and performance will suffer greatly.
last weekend at the sac bugorama, eric madsen couldn't get his pro mod car to make big boost... it turned out to be a crack in the intake manifold(??), so make sure both the intake and exhaust systems are sealed up tightly.
dan
oceanstreetvideo.com
a lean condition sounds like poor fuel pressure... you pretty much cannot use the stock fuel line for either fuel supply or fuel return to the tank, on a turbo acvw.
you MUST get an electronic fuel pressure gauge to monitor conditions under boost... i have a full-sweep(0-50psi) aircraft fuel gauge that uses a stewart warner sender, for about $85.
which c.b. hideaway exhaust system are you using? if it's the old 1.5" o.d., then the i.d. of that system is the same ~1 3/8" that was used in stock 1600cc exhaust system.
i'm not familar with an hitatchi t3(?), but if it puts out more volume than the schwitzer that came originally with the old c.b. exhaust, you could have too much exhaust back pressure.
the correct way to make maximum turbo h.p. is to have the exhaust back pressure be a certain ratio of the intake boost pressure... that means putting a pressure gauge on the exhaust system, just like the boost gauge you have on the intake system.
if there is too much back pressure, you'll get too much flow reversion into the combustion chamber, and performance will suffer greatly.
last weekend at the sac bugorama, eric madsen couldn't get his pro mod car to make big boost... it turned out to be a crack in the intake manifold(??), so make sure both the intake and exhaust systems are sealed up tightly.
dan
oceanstreetvideo.com