would this work?
08-13-2006, 07:00 PM
#1
0.0 BAR
Thread Starter
Join Date: Dec 2005
Posts: 45
would this work?
I have a jdm b18c in my 92 civic hatch garrett t3 48.60 with an internal gate and a manual boost controller. My question is I just finished street tuniing with uberdata but my problem is I have set it to 8psi wich it holds for a bit but falls off to six psi. I was told to reroute my vacum line, instead of from my the compressor side of the turbo to the boost controller to have the line run from my fuel pressure regulater vacum source to my boost controller and this will do the trick it will hold my 8psi. I know i will get responses like do it and see but I am also trying to figure out why it does it in the first place and how this rerouting of the vacum line works?
please and thank u
please and thank u
08-13-2006, 07:50 PM
#3
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: would this work?
mike is right.
The t3 60 trim 48/60 is good for the stock ls but the B18C needs bigger turbo with at a minimum 0.63 a/r stage one turbine and a t4 compressor.
the correct turbo choice will depend on the engine (is it b18C1 or b18C5??) WHat's it's power now? and also what will you use the car for?
The t3 60 trim 48/60 is good for the stock ls but the B18C needs bigger turbo with at a minimum 0.63 a/r stage one turbine and a t4 compressor.
the correct turbo choice will depend on the engine (is it b18C1 or b18C5??) WHat's it's power now? and also what will you use the car for?
08-13-2006, 07:57 PM
#4
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Join Date: Dec 2005
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Re: would this work?
it's a b18c gsr from japan not a type r. It is used as a daily driver and it is really fun to drive I love it I have had the car for nine years and been working on it ever since I have done all the work myself . See the thing that gets me is that it holds sometimes for a while and then bleeds off i was told to reroute it a manifold source i guess i will try this i got nothing to loose.
08-13-2006, 09:26 PM
#6
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Join Date: Dec 2005
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Re: would this work?
yes your right it's 185 hp . so what your saying is that the turbo cant hold 8 psi because it's too small? What about what my buddy's said that it's a boost creep issue that if i run the line instead of off the turbo to the mbc to run it off the intake manifold to the mbc it should be ok?
08-13-2006, 09:32 PM
#7
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Join Date: Apr 2004
Posts: 9,800
Re: would this work?
if you move your signal line up to the intake manifold instead of at the compressor housing, the result isnt gonna be what you expect. Right now you're reading pressure at the compressor, but on the travel from you compressor to your intake there is loss.
So by moving it you're just gonna compensate for that loss most likely, so if you boost to 8 and bleed to six now, after you move it you might boost to 9-10 and bleed to 7-8. Falling off on the top is characteristic of an undersized turbo and shitty internal wastegate.
So by moving it you're just gonna compensate for that loss most likely, so if you boost to 8 and bleed to six now, after you move it you might boost to 9-10 and bleed to 7-8. Falling off on the top is characteristic of an undersized turbo and shitty internal wastegate.
08-14-2006, 08:53 AM
#9
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: would this work?
WHAT? Common the way the wastegate is hooked up doesn't change anything to the fact that stage 1 0.48 a/r turbine is way too small for a 185 HP engine. it will act as a plug and limit the power to 250 HP with very poor efficiency.
And that 0.42 compressor is at best a 50 trim able to support no more than 250 HP either when maxed out.
You know stage one 0.63 t3/t4 is an option for you but you could also consider stage 2 and 3 turbine on that engine.
You can do it right later, or you can do it right now.
And that 0.42 compressor is at best a 50 trim able to support no more than 250 HP either when maxed out.
You know stage one 0.63 t3/t4 is an option for you but you could also consider stage 2 and 3 turbine on that engine.
You can do it right later, or you can do it right now.
08-14-2006, 09:18 AM
#10
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Join Date: May 2005
Posts: 0
Re: would this work?
Originally Posted by BLAAST
WHAT? Common the way the wastegate is hooked up doesn't change anything to the fact that stage 1 0.48 a/r turbine is way too small for a 185 HP engine. it will act as a plug and limit the power to 250 HP with very poor efficiency.
And that 0.42 compressor is at best a 50 trim able to support no more than 250 HP either when maxed out.
You know stage one 0.63 t3/t4 is an option for you but you could also consider stage 2 and 3 turbine on that engine.
You can do it right later, or you can do it right now.
And that 0.42 compressor is at best a 50 trim able to support no more than 250 HP either when maxed out.
You know stage one 0.63 t3/t4 is an option for you but you could also consider stage 2 and 3 turbine on that engine.
You can do it right later, or you can do it right now.
Hooking the WG up to the IM will compensate for any leaks, but the turbo might get out of it's efficiency range rather quickly if you have big leaks. If boost still falls off then you have majors boost leaks and a really undersized turbo.
For example the turbo has to push 20psi to get 10 at the IM, then a T3 is gonna be pushing hot *** air and might have enough flow to get 20psi, thus still a boost drop when connected to the IM.
Still though. A 0.48 A/R stage 1 wheel will suck with any B-series.]
