LS safe for low boost?
08-18-2004, 12:31 PM
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LS safe for low boost?
Hey guys,
I've been looking around the board for amonth or two (am a newbie still
) but I've been scouring the local wreckin yards in search of a B18 to start my boost project on. After reading about the (very limited though) cams, intake manifold change, etc I've decided to go with a '94 or '95 LS bottom end (or so I think). My questions stand in the CR of a stock LS (and later a LS/vtech) being able to hold under 9 psi of boost on the high 10's of compression... how long should I expect it to last and maybe get a few ideas on upgrades.
Rich
Main point, will a stock LS put up with 9'ish PSI with a proper EMS?
I've been looking around the board for amonth or two (am a newbie still
) but I've been scouring the local wreckin yards in search of a B18 to start my boost project on. After reading about the (very limited though) cams, intake manifold change, etc I've decided to go with a '94 or '95 LS bottom end (or so I think). My questions stand in the CR of a stock LS (and later a LS/vtech) being able to hold under 9 psi of boost on the high 10's of compression... how long should I expect it to last and maybe get a few ideas on upgrades.Rich
Main point, will a stock LS put up with 9'ish PSI with a proper EMS?
08-18-2004, 12:34 PM
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Re: LS safe for low boost? (SJcivic)
9 psi? on what turbo. It could do probably 15 psi on a T25. stock LS blocks can hold over 300 hp if well tuned, keep reading.
08-18-2004, 01:06 PM
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Re: LS safe for low boost? (D15B7turbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D15B7turbo »</TD></TR><TR><TD CLASS="quote">9 psi? on what turbo. It could do probably 15 psi on a T25. stock LS blocks can hold over 300 hp if well tuned, keep reading.</TD></TR></TABLE>
Yes I am sure I could get away with that for a while, but relaibilty is key. Im trying to figure out a setup that I will be happy with on the way to work and at the drags.
Im figuring 9'ish psi for the sheer fact of the high 10's CR on the engine, that coupled with the relatively small turbo I will use. Any suggestions are welcome.
Rich
Yes I am sure I could get away with that for a while, but relaibilty is key. Im trying to figure out a setup that I will be happy with on the way to work and at the drags.
Im figuring 9'ish psi for the sheer fact of the high 10's CR on the engine, that coupled with the relatively small turbo I will use. Any suggestions are welcome.
Rich
08-18-2004, 01:12 PM
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Re: LS safe for low boost? (SJcivic)
is LS safe for low boost?
where are you reading?
there are people boosting 11-12 psi on a stock motor, with a good tune
keep reading, and take notes
where are you reading?
there are people boosting 11-12 psi on a stock motor, with a good tune
keep reading, and take notes
08-18-2004, 01:22 PM
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Re: LS safe for low boost? (JDMH22HATCH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by buda18 »</TD></TR><TR><TD CLASS="quote">
where are you reading?</TD></TR></TABLE>
I'm not reading this anywhere... this is my own personal thoughts upon the matter.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMH22HATCH »</TD></TR><TR><TD CLASS="quote">You'll be fine. I'm running a completely bone stock LS @12.5psi with an XS engineering TO4X. Tuning is key
</TD></TR></TABLE>
What EMS care you using?
Rich
where are you reading?</TD></TR></TABLE>
I'm not reading this anywhere... this is my own personal thoughts upon the matter.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMH22HATCH »</TD></TR><TR><TD CLASS="quote">You'll be fine. I'm running a completely bone stock LS @12.5psi with an XS engineering TO4X. Tuning is key
</TD></TR></TABLE>What EMS care you using?
Rich
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08-18-2004, 01:26 PM
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Re: LS safe for low boost? (buda18)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by buda18 »</TD></TR><TR><TD CLASS="quote">texas boys live by the hondata</TD></TR></TABLE>
Any advice before diving in?
Rich
Any advice before diving in?
Rich
08-18-2004, 01:29 PM
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Re: LS safe for low boost? (SJcivic)
from what ive seen and read and DOING
i didnt go cheap bought everything new and i got the hondata. one thing i hope you've learned is that tunning is extremely important. just try to find a turbo that will meet your needs. which im not very good with the sizes and stuff. if you have any other questions just ask
i didnt go cheap bought everything new and i got the hondata. one thing i hope you've learned is that tunning is extremely important. just try to find a turbo that will meet your needs. which im not very good with the sizes and stuff. if you have any other questions just ask
08-18-2004, 01:34 PM
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Re: LS safe for low boost? (buda18)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by buda18 »</TD></TR><TR><TD CLASS="quote">from what ive seen and read and DOING
i didnt go cheap bought everything new and i got the hondata. one thing i hope you've learned is that tunning is extremely important. just try to find a turbo that will meet your needs. which im not very good with the sizes and stuff. if you have any other questions just ask</TD></TR></TABLE>
What Hondata system are you using?
Rich
Total tuning time?
i didnt go cheap bought everything new and i got the hondata. one thing i hope you've learned is that tunning is extremely important. just try to find a turbo that will meet your needs. which im not very good with the sizes and stuff. if you have any other questions just ask</TD></TR></TABLE>
What Hondata system are you using?
Rich
Total tuning time?
08-18-2004, 01:41 PM
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Re: LS safe for low boost? (SJcivic)
im using the s200b. the s100b works just as well but you can use the other options that come with hondata later on if you decide to tune yourself, which i dont plan on tuning myself ever, but oh well the s200b is only $50 more? im not sure.
i think it took about 2 hours to get my car tuned. i hear shops usually charge around $150/hr for tuning.
i think it took about 2 hours to get my car tuned. i hear shops usually charge around $150/hr for tuning.
08-18-2004, 02:31 PM
#13
Re: LS safe for low boost? (SJcivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SJcivic »</TD></TR><TR><TD CLASS="quote">
What EMS care you using?
Rich</TD></TR></TABLE>
I'm running Hondata S200b with Walbro 255 and Precision 1000cc's
What EMS care you using?
Rich</TD></TR></TABLE>
I'm running Hondata S200b with Walbro 255 and Precision 1000cc's
08-18-2004, 03:00 PM
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Re: LS safe for low boost? (JDMH22HATCH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMH22HATCH »</TD></TR><TR><TD CLASS="quote">
I'm running Hondata S200b with Walbro 255 and Precision 1000cc's</TD></TR></TABLE>
wow, are 1000's normal for this type of project? thats seems awfully high.
Whats ur fuel pressure at?
Rich
I'm running Hondata S200b with Walbro 255 and Precision 1000cc's</TD></TR></TABLE>
wow, are 1000's normal for this type of project? thats seems awfully high.
Whats ur fuel pressure at?
Rich
08-18-2004, 11:05 PM
#15
Re: LS safe for low boost? (SJcivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SJcivic »</TD></TR><TR><TD CLASS="quote">
wow, are 1000's normal for this type of project? thats seems awfully high.
Whats ur fuel pressure at?
Rich</TD></TR></TABLE>
Car runs and idles great. Soon enough I will be tuning at 15psi once I get my new Intake Mani on. I have no clue what my fuel pressure is at cause I'm running a stock fpr without a guage. When tuning your car you can set the duty cycle and so forth.
Also, the reason for buying the 1000cc's is because hopefully my built motor will be going in soon and then fuel will already be taken care of.
wow, are 1000's normal for this type of project? thats seems awfully high.
Whats ur fuel pressure at?
Rich</TD></TR></TABLE>
Car runs and idles great. Soon enough I will be tuning at 15psi once I get my new Intake Mani on. I have no clue what my fuel pressure is at cause I'm running a stock fpr without a guage. When tuning your car you can set the duty cycle and so forth.
Also, the reason for buying the 1000cc's is because hopefully my built motor will be going in soon and then fuel will already be taken care of.
08-18-2004, 11:24 PM
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Re: LS safe for low boost? (JDMH22HATCH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMH22HATCH »</TD></TR><TR><TD CLASS="quote">
Car runs and idles great. Soon enough I will be tuning at 15psi once I get my new Intake Mani on. I have no clue what my fuel pressure is at cause I'm running a stock fpr without a guage. When tuning your car you can set the duty cycle and so forth.
Also, the reason for buying the 1000cc's is because hopefully my built motor will be going in soon and then fuel will already be taken care of. </TD></TR></TABLE>
whats your whp and torque with 12.5psi
Car runs and idles great. Soon enough I will be tuning at 15psi once I get my new Intake Mani on. I have no clue what my fuel pressure is at cause I'm running a stock fpr without a guage. When tuning your car you can set the duty cycle and so forth.
Also, the reason for buying the 1000cc's is because hopefully my built motor will be going in soon and then fuel will already be taken care of.
</TD></TR></TABLE>whats your whp and torque with 12.5psi
08-19-2004, 09:31 AM
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Re: LS safe for low boost? (careawholelot)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SJcivic »</TD></TR><TR><TD CLASS="quote">Hey guys,
I've been looking around the board for amonth or two (am a newbie still ) but I've been scouring the local wreckin yards in search of a B18 to start my boost project on. After reading about the (very limited though) cams, intake manifold change, etc I've decided to go with a '94 or '95 LS bottom end (or so I think). My questions stand in the CR of a stock LS (and later a LS/<U>vtech</U>) being able to hold under 9 psi of boost on the high 10's of compression... how long should I expect it to last and maybe get a few ideas on upgrades.
Rich
Main point, will a stock LS put up with 9'ish PSI with a proper EMS?</TD></TR></TABLE>
am sorry i know it's off topic but i just had to
sorry again
I've been looking around the board for amonth or two (am a newbie still ) but I've been scouring the local wreckin yards in search of a B18 to start my boost project on. After reading about the (very limited though) cams, intake manifold change, etc I've decided to go with a '94 or '95 LS bottom end (or so I think). My questions stand in the CR of a stock LS (and later a LS/<U>vtech</U>) being able to hold under 9 psi of boost on the high 10's of compression... how long should I expect it to last and maybe get a few ideas on upgrades.
Rich
Main point, will a stock LS put up with 9'ish PSI with a proper EMS?</TD></TR></TABLE>
am sorry i know it's off topic but i just had to
sorry again
08-19-2004, 10:10 AM
#18
Re: LS safe for low boost? (careawholelot)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by careawholelot »</TD></TR><TR><TD CLASS="quote">
whats your whp and torque with 12.5psi</TD></TR></TABLE>
The O-ring on my boost controller was bad when I tuned and it was bleeding off, so I'm not sure what I'm really making. But after my tuning session then with a completely stock ls (stock IM, stock fuel rail, stock fpr, etc) I made 270/240. My turbo is not really in its efficiency range and now I'm gonna be putting on my new mani, I already have my inline pro rail on and I'll have my new trottle body and lower charge pipe on for the next session. I just hope to put down around 300ftlbs of torque this time. My lower charge pipe is only at 2" right now
whats your whp and torque with 12.5psi</TD></TR></TABLE>
The O-ring on my boost controller was bad when I tuned and it was bleeding off, so I'm not sure what I'm really making. But after my tuning session then with a completely stock ls (stock IM, stock fuel rail, stock fpr, etc) I made 270/240. My turbo is not really in its efficiency range and now I'm gonna be putting on my new mani, I already have my inline pro rail on and I'll have my new trottle body and lower charge pipe on for the next session. I just hope to put down around 300ftlbs of torque this time. My lower charge pipe is only at 2" right now
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