Hesitation between .48 or .63 trim on a Precision SC50 ... PLEASE LOOK ! : (
11-13-2003, 04:49 AM
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Hesitation between .48 or .63 trim on a Precision SC50 ... PLEASE LOOK ! : (
So I will buy my new turbo in a few weeks... My choice for my D16Z6 is the PRECISION SC50 ... I heard good things about it... I will have my head port n polish with 0.5 mm bigger Crower valves, and Crower valve spring + retainer... My engine is fully built from A to Z ... I run on a AEM EMS. And I have 550 RC inj.
So my tuner told me that if I dont run racing fuel dont go over 15 psi on 94 octane to be sure....
So he also told me that the .63 trim will give me more top end power but will but will spool later .... for sure more power...
He told me .48 trim = easy 300 whp at 15 psi
.63 trim = he didnt told me the whp...
So now I dont know wich one choose... Im telling me that if I change is to go big but another way I do more street than drag so... I dont want something with too much lag... Even if a lot of people told me that lag = traction on a fwd...
I also need to know if with the .63 trim I could keep my 550 ??? or if at 15 psi they could be over... So I could run less boost and have the same power than the .48 trim and have room for future improvement ? ?????
PLEASE HELP ME !!!
this is a big decision... I know that there is a lot of question at the same time I need advice from people with experience please !!
Mathieu
Thank to all of ya
So my tuner told me that if I dont run racing fuel dont go over 15 psi on 94 octane to be sure....
So he also told me that the .63 trim will give me more top end power but will but will spool later .... for sure more power...
He told me .48 trim = easy 300 whp at 15 psi
.63 trim = he didnt told me the whp...
So now I dont know wich one choose... Im telling me that if I change is to go big but another way I do more street than drag so... I dont want something with too much lag... Even if a lot of people told me that lag = traction on a fwd...
I also need to know if with the .63 trim I could keep my 550 ??? or if at 15 psi they could be over... So I could run less boost and have the same power than the .48 trim and have room for future improvement ? ?????
PLEASE HELP ME !!!
this is a big decision... I know that there is a lot of question at the same time I need advice from people with experience please !!Mathieu
Thank to all of ya
11-13-2003, 05:37 AM
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Re: (yellowturbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yellowturbo »</TD></TR><TR><TD CLASS="quote">are you talking about the .63 at 15 psi ???</TD></TR></TABLE>
It doesn't matter what exhaust or psi, 300whp is usually the max duty your want to see on the 550cc. So if your planning on running race gas and aiming for more power, you need bigger!
It doesn't matter what exhaust or psi, 300whp is usually the max duty your want to see on the 550cc. So if your planning on running race gas and aiming for more power, you need bigger!
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11-13-2003, 05:53 AM
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Re: (yellowturbo)
You can get a little over 300whp on 550's with decent duty cycle. I made 374whp with 550's maxed out. I would go with the .63 especially since you have your redline raised to 8000+rpm.
11-13-2003, 05:57 AM
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Re: (hybrid901)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybrid901 »</TD></TR><TR><TD CLASS="quote">You can get a little over 300whp on 550's with decent duty cycle. I made 374whp with 550's maxed out. I would go with the .63 especially since you have your redline raised to 8000+rpm.</TD></TR></TABLE>
Agree, this is what I am running. .63 is what you want.
I am running 800cc RC's on my Z6. Idles perfect on Hondata.
Agree, this is what I am running. .63 is what you want.
I am running 800cc RC's on my Z6. Idles perfect on Hondata.
11-13-2003, 06:37 AM
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Re: (ladysman)
so you tell me that it could be possible to do mere than 300 whp on 550... I want to max them before change... I think I will try and see what it will happen on the dyno ...
thank for all your advice... everyone seem to enjoy the idea of the .63 trim... so at 15 psi what I should expect ??? around 350 whp ?
Thank to all the harcore SOHC owner out there !
thank for all your advice... everyone seem to enjoy the idea of the .63 trim... so at 15 psi what I should expect ??? around 350 whp ?
Thank to all the harcore SOHC owner out there !
11-13-2003, 06:45 AM
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Re: (ELSpool)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ELSpool »</TD></TR><TR><TD CLASS="quote">Ladysman, when do you see 12 psi on your set up right now?</TD></TR></TABLE>
about 5000 give or take 200 I would say. I don't pay attention because I am always holding on......HEHE
Yellow,
You will max out the 550's at stock fuel pressure around 330-340. You can always bump up the FP to like 50 if you wanted.
Man, if you get 350 horse out of a SOHC on 15 psi, I think you will have a ton of people "Ohing and Ahing" over that. I think you willl need more like 18-20 to see that but hey, worth a shot.
about 5000 give or take 200 I would say. I don't pay attention because I am always holding on......HEHE
Yellow,
You will max out the 550's at stock fuel pressure around 330-340. You can always bump up the FP to like 50 if you wanted.
Man, if you get 350 horse out of a SOHC on 15 psi, I think you will have a ton of people "Ohing and Ahing" over that. I think you willl need more like 18-20 to see that but hey, worth a shot.
11-13-2003, 06:49 AM
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Re: (yellowturbo)
at 15psi you hsould expect anywhere from 290hp to 325hp maybe more depending on how agressive you are with timing and all other variables... at 16 mine made 302hp but didnt have the crazy tuning capability of the aem nor did i mess with my timing....
11-13-2003, 06:50 AM
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Re: (yellowturbo)
I say deffinitly go with the .63 since your running the motor up to 8grand you need the bigger exhaust housing for better top end. I would say you should probably be able to see around 325whp give or take a few on 15 lbs.
11-13-2003, 09:59 AM
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Re: (yellowturbo)
i'd run the .48. I run a .48 on my d16z6 right now, and it's reasonably responsive and pulls hard as can be to redline-- seems like it needs anotoher 1000 rpms.
I wouldn't put a .63 on my d. Others may tell you different, but my .48 housing was originally on a volvo 2.4L i believe.. mabye it was 2.3-- but still, that's .8 of a L more than we have... so the .48 housing is fine.
I wouldn't put a .63 on my d. Others may tell you different, but my .48 housing was originally on a volvo 2.4L i believe.. mabye it was 2.3-- but still, that's .8 of a L more than we have... so the .48 housing is fine.
11-13-2003, 10:08 AM
#18
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I chose the .48 a/r housing with a stage 3 wheel for my built ZC. It only has 8.5:1 compression and will see 7200 RPM max. If you're gonna rev to 8000+ and you're running close to stock compression, I think you'll be happier with the .63 a/r housing.
Don't feel completely pressured by your choice. If you decide to change housings, it's relatively cheap...it's not like you'd have to switch out the entire turbo.
Sonny
11-13-2003, 10:14 AM
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Thank Sonny ... To awnser your question I run at around 9.1 or a little bit more... But your tip about changing only the housing if im not happy is a really good idea !!!! More I read, more I think going with the .63 trim ...
11-13-2003, 10:40 AM
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Re: (Johnyquest)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnyquest »</TD></TR><TR><TD CLASS="quote">i'd run the .48. I run a .48 on my d16z6 right now, and it's reasonably responsive and pulls hard as can be to redline-- seems like it needs anotoher 1000 rpms.
I wouldn't put a .63 on my d. Others may tell you different, but my .48 housing was originally on a volvo 2.4L i believe.. mabye it was 2.3-- but still, that's .8 of a L more than we have... so the .48 housing is fine.</TD></TR></TABLE>
Only reason I put a .63 on was for the top end numbers. I also recommended it because he has a built motor.
For a stock block a .48 is fine. I have a stock block in there now and the .63 pulls incredibly hard.
I wouldn't put a .63 on my d. Others may tell you different, but my .48 housing was originally on a volvo 2.4L i believe.. mabye it was 2.3-- but still, that's .8 of a L more than we have... so the .48 housing is fine.</TD></TR></TABLE>
Only reason I put a .63 on was for the top end numbers. I also recommended it because he has a built motor.
For a stock block a .48 is fine. I have a stock block in there now and the .63 pulls incredibly hard.
11-13-2003, 10:43 AM
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Re: (yellowturbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yellowturbo »</TD></TR><TR><TD CLASS="quote">at how much your boost is set ladysman</TD></TR></TABLE>
13lbs for now.
13lbs for now.
11-13-2003, 11:04 AM
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Re: (yellowturbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yellowturbo »</TD></TR><TR><TD CLASS="quote">wow 13 psi with a sc 50 .63 a/r... ??? What the hell your engine eats to be this strong ??? </TD></TR></TABLE>
No, 13 psi on a t3/t04e .63 ar 60 trim snail.
I have no idea. use good oil, and take care of it. This is on 93 pump gas too.
Actually, very well tuned is a better answer. The thing screams!!!!!
No, 13 psi on a t3/t04e .63 ar 60 trim snail.
I have no idea. use good oil, and take care of it. This is on 93 pump gas too.
Actually, very well tuned is a better answer. The thing screams!!!!!