i know this isn't the right forum
i know this isn't the right forum Hey guys I know this isn't right but I mainly wanted ChrisB to reply and see what he thinks.... Is it possible to tune for these conditions?? PLEASE REPLY CHRISB....
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OK guys here is the deal... First of all I live in Texas... which right now we are close to 100 deg days... secondly I want to know what you all think about running a Whipple @ 9psi on pump gas WITHOUT water injection.... Just a stock internal engine with a 9psi whipple.... I have gotten a couple of opinions but I thought I would throw it out here cause I am very stubborn as these people will tell you... Also keep in mind I have 30Lb 8.1L injectors which I am trying to tune myself per Ls1 Edit..... I am thinking if I can get my Ltrims in line and then retard the timing just a SLIGHT bit I might be able to pull it off.... END Opinions welcome now..... :end paste:
:paste:
OK guys here is the deal... First of all I live in Texas... which right now we are close to 100 deg days... secondly I want to know what you all think about running a Whipple @ 9psi on pump gas WITHOUT water injection.... Just a stock internal engine with a 9psi whipple.... I have gotten a couple of opinions but I thought I would throw it out here cause I am very stubborn as these people will tell you... Also keep in mind I have 30Lb 8.1L injectors which I am trying to tune myself per Ls1 Edit..... I am thinking if I can get my Ltrims in line and then retard the timing just a SLIGHT bit I might be able to pull it off.... END Opinions welcome now..... :end paste:
Re: i know this isn't the right forum hi will, you know my oponion on this subject but i think i can answer another one of your questions. are 30lb/hr injectors large enuff.
strait form the whipple web site http://www.whipplesuperchargers.com/powercht_c.html the 4.8 with a whipple at 6psi is rated at 384fwhp. now add hp for the extra 3psi, about 20hp/lb. so now you are trying for 444hp.
now to calculate injector size you can goto rcengenering http://www.rceng.com/technical.htm and use one of their tables to see what size injector you need.
at 444hp, .55bsfc and 80% duty cycle you need 38lb/hr injectors.
even at 100% duty cycle you will need 30.5lb/hr
from what i understand .55bsfc may be too low, .60 might be closer. i don't think those injectors have a chance, at 6psi they should work fine, somewhere short of 9psi they will run out.
strait form the whipple web site http://www.whipplesuperchargers.com/powercht_c.html the 4.8 with a whipple at 6psi is rated at 384fwhp. now add hp for the extra 3psi, about 20hp/lb. so now you are trying for 444hp.
now to calculate injector size you can goto rcengenering http://www.rceng.com/technical.htm and use one of their tables to see what size injector you need.
at 444hp, .55bsfc and 80% duty cycle you need 38lb/hr injectors.
even at 100% duty cycle you will need 30.5lb/hr
from what i understand .55bsfc may be too low, .60 might be closer. i don't think those injectors have a chance, at 6psi they should work fine, somewhere short of 9psi they will run out.
