small shot with blower?
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single digit dreamer
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From: omaha ne
small shot with blower? looking for just a little more power, i am going to be doing a little testing of my own but was wondering what you guys thought. i have a whipple with instant boost out of the hole. i usualy run 7psi(non intercooled) and have ran 9psi with good gas.
wich of these combos would be faster, wich safer, i know i am pushing it prety hard here and it may blow but i am going to keep my tune as safe as i can(good gas, 15deg max timing, working knock sensors, watch fuel presure. ~11-1a/f ratio)
combo 1, 7psi with a 50shot
combo 2, 9psi with a 35shot
hopefully it wont blow at this level for awhile and hopefully i can keep from uping the shot for awhile. anyone think it can't take it at all and will break the first time i try it(stock 6.0 longblock)?
<small>[ February 16, 2003, 11:36 AM: Message edited by: parish8 ]</small>
wich of these combos would be faster, wich safer, i know i am pushing it prety hard here and it may blow but i am going to keep my tune as safe as i can(good gas, 15deg max timing, working knock sensors, watch fuel presure. ~11-1a/f ratio)
combo 1, 7psi with a 50shot
combo 2, 9psi with a 35shot
hopefully it wont blow at this level for awhile and hopefully i can keep from uping the shot for awhile. anyone think it can't take it at all and will break the first time i try it(stock 6.0 longblock)?
<small>[ February 16, 2003, 11:36 AM: Message edited by: parish8 ]</small>
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From: Maple Grove MN
Re: small shot with blower? I bet you knew you would get a response from me. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> 50shot and 7psi! With the tune you described I do not see you having any problems. Unless of course it's 95+ degrees outside at the time. That must be sweet to have a gigantic truck that runs 12s. <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />
Justin
Justin
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single digit dreamer
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From: omaha ne
Re: small shot with blower? i hear what you are saying, there are 2 other reasons that i can think of that may make less boost and more nitrous better.
1st, i think it would be more consistant, i see boost only being very efected by temperature but with moderate boost and some nitorus, tempature effects will probably be less.
2nd, if both set ups give the same ET or hp it seems like the nitrous would be easier on the engine since i wouldn't need the extra hp to drive the blower even faster.
i run in 4wd and still have a traction issue, i turn all 4 over for at least 10' so i am going to try and time the hit right after it hooks 100%.
i can see one other posiable benifit, if i max out my current fuel system i may build a dedicated 1gallon fuel cell set up just for the nitorus and run some c16 in there or something. with a set up like that i can run pump gas all the time and have LOTS of hp on tap just by fliping a switch. and if i ever beef up the low end then i could really hit it hard, maybe a 100 shot on top of 7psi <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
1st, i think it would be more consistant, i see boost only being very efected by temperature but with moderate boost and some nitorus, tempature effects will probably be less.
2nd, if both set ups give the same ET or hp it seems like the nitrous would be easier on the engine since i wouldn't need the extra hp to drive the blower even faster.
i run in 4wd and still have a traction issue, i turn all 4 over for at least 10' so i am going to try and time the hit right after it hooks 100%.
i can see one other posiable benifit, if i max out my current fuel system i may build a dedicated 1gallon fuel cell set up just for the nitorus and run some c16 in there or something. with a set up like that i can run pump gas all the time and have LOTS of hp on tap just by fliping a switch. and if i ever beef up the low end then i could really hit it hard, maybe a 100 shot on top of 7psi <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
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From: Maple Grove MN
Re: small shot with blower? That would just rock! I cant believe you're spinning all 4 for ten feet! I always wanted to be able to do that when I had my 98 dakota. The closest I got was when I was pulling somebody out of a ditch. I was doing a 4 wheel drive burnout. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Always wanted to put nitrous on that truck and launch in four wheel full time. If you have any pics of your truck send 'em! Let me know what you decide on for a combonation.
Justin
Meapimp69@aol.com
Justin
Meapimp69@aol.com
Thread Starter
single digit dreamer
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From: omaha ne
Re: small shot with blower? try this link, it may not work, it is me geting stomped by a low 12sec ws6, he has slicks, stall and a bunch of bolt on's.
http://members.***.net/parish88/launchalley.MPG
it's not working, i think i may have reached my alocated band with for the month, i will just email it to you.
<small>[ February 16, 2003, 05:07 PM: Message edited by: parish8 ]</small>
http://members.***.net/parish88/launchalley.MPG
it's not working, i think i may have reached my alocated band with for the month, i will just email it to you.
<small>[ February 16, 2003, 05:07 PM: Message edited by: parish8 ]</small>
Thread Starter
single digit dreamer
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From: omaha ne
Re: small shot with blower? i killed the stock tranny in about 1 week, then i killed a flp tranny in about 1 month, i am on my 2nd flp tranny now and you can see i plan on uping the power a little so we will see on that one. my warrenty runs out in about 6weeks so i would like to push it prety hard before i am on my own.
i have rebuilt the front diferential 2 times now(didn't do it quite right the first time) and i still have more moaning/howling than i think i should when i am in 4wd. i guess i will just let it develop.
i have rebuilt the front diferential 2 times now(didn't do it quite right the first time) and i still have more moaning/howling than i think i should when i am in 4wd. i guess i will just let it develop.
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Thread Starter
single digit dreamer
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From: omaha ne
Re: small shot with blower? i like what your telling me! why are you shuting off the nitrous at 4800rpm? is that just in 1st gear then? are you maxing out your maf, injectors, fuel system??? and thats why you stop spraying or you are just using it ot get out of the hole?
i will be using the wet kit sprayed right after the blower, sort of a liquid intercooler <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> , and figure on having the widow switch set from 4200 to 6000rpm, that should get me spraying about 2sec out of the hole and all the way to the end.
i will be using the wet kit sprayed right after the blower, sort of a liquid intercooler <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> , and figure on having the widow switch set from 4200 to 6000rpm, that should get me spraying about 2sec out of the hole and all the way to the end.
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Re: small shot with blower? Nitrous compliments superchargers nicely. They build cylinder pressure at opposite ends of the rpm range. This gives you a nice flat torque curve along with the intercooling effect.
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From: Maple Grove MN
Re: small shot with blower? In another post you put up I explained that I shut it off because thats when the supercharger starts to build substantial boost (about 5psi at 4800). I'm currently running too small of a pulley for my engine. I have a new crank and supercharger pulley to put on in the spring which should take care of that. If that drops my peak boost down 2psi I will run the N2O to maybe 5800 RPM. Although my idea was exactly what you said. Using it to get out of the hole. Turbo guys rip on supercharger guys about our lack of low end torque so this is my way of recovering some of it. (You dont have that problem with your style blower.) I might still stop at 4800 RPMs but run a 75shot seeing as how I'm getting some ET streets, a stage 3 clutch, and a coffin for my 10 bolt.
Justin
Justin
Re: small shot with blower? Oops, didnt see you had a whipple blower. I thought you had the centrifugal type blower like the vortechs and paxtons.
In that case run more boost and the smaller shot of nitrous for the intercooling effect.
In that case run more boost and the smaller shot of nitrous for the intercooling effect.
TECH Apprentice
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From: Maple Grove MN
Re: small shot with blower? Lets say you end up with the same RWHP numbers for both your choices seeing as how the more psi you get rid of the more N20 you can add. I would think the less psi and more N20 choice would be better because it would give a cooler intake charge than the less N20 combo (less chance of detonation) plus when you compare identical HP increases from both power adders I believe the nitrous will yeild greater amounts of torque per horsepower. In fact I have dyno graphs to prove that statement. But it all depends on what you want. Since you have the instant boost you might not need the extra RWTQ due to possible traction problems.