How far will 42#ers take me?
Oct 10, 2006 | 08:49 PM
#41
TECH Enthusiast
iTrader: (1)
Joined: Aug 2004
Posts: 682
Likes: 0
From: Ontario
Originally Posted by TurboBerserker
700rwhp on 42s... Hmmm. Don't but it 
On a 2wd (so assuming 800 flywheel), 80% IDC = 65lbs/hour (rated at 43.5psi) on 58psi of FP. Now meth will buy you a little bit, but not 23lbs/hr... As I understand them, boost-a-pumps can't raise your fp, just keep it steady, so they are no help in this.
I ran my 600rwhp setup (awd, so it was around 800 flywheel) with an intercooler and meth and didn't have enough injector with 60lbers to turn it up much more (and ruined the run with a small fire). Oh yeah, twin 255lph walbros too. Granted I didn't run two meth injectors like Jim did and didn't get a chance to crank up the meth as high as Jim did, but still. I did have a street meth tune in there (meaning I tuned the meth controller on the street).
42lbers are TINY injectors for boost guys. TINY as in the bare minimum...
And 14psi on an LQ9 is probably a dead LQ9 Cody (unless you are doing internals). Sooner or later anyway. It's been a couple of years but we did some gazintas on SSS and figured 15psi is the bang limit on the stock LQ9. I personally think 12psi on an LQ9 is asking for trouble -- you need a perfect tune every second your at 12 psi... No room for heat, overboost, etc, although its probably worth close to 80-100hp on as STS.
On a 2wd (so assuming 800 flywheel), 80% IDC = 65lbs/hour (rated at 43.5psi) on 58psi of FP. Now meth will buy you a little bit, but not 23lbs/hr... As I understand them, boost-a-pumps can't raise your fp, just keep it steady, so they are no help in this.I ran my 600rwhp setup (awd, so it was around 800 flywheel) with an intercooler and meth and didn't have enough injector with 60lbers to turn it up much more (and ruined the run with a small fire
). Oh yeah, twin 255lph walbros too. Granted I didn't run two meth injectors like Jim did and didn't get a chance to crank up the meth as high as Jim did, but still. I did have a street meth tune in there (meaning I tuned the meth controller on the street).42lbers are TINY injectors for boost guys. TINY as in the bare minimum...
And 14psi on an LQ9 is probably a dead LQ9 Cody (unless you are doing internals). Sooner or later anyway. It's been a couple of years but we did some gazintas on SSS and figured 15psi is the bang limit on the stock LQ9. I personally think 12psi on an LQ9 is asking for trouble -- you need a perfect tune every second your at 12 psi... No room for heat, overboost, etc, although its probably worth close to 80-100hp on as STS.
Good Point - I wouldnt want to rely on meth to make up the difference - I would need at least 60's to get to 700rwhp and might as well spend the money on the 98's. I think the walbro 255lph should be alright with the voltage booster, but your're right about the 42 pounders being too small.
I attached a good article from the KB website.
Oct 10, 2006 | 09:02 PM
#42
you can get a hobbs switch at Napa....they gotta look it up half the time in one of their little catalogues to figure out they have it in stock.
I started with a SMC kit. Steve sold me all the stuff to switch to 2 nozzles...pressure gauge...nozzle and all..40 bux. I then got a shurflo pump. Steve just sent me his progressive controller modified to run a shurflow...havent installed it yet. I like Julios kit but i started out with Steve @ SMC and just like the service product i already get.
Head on up!! We can go out and waste some tires and methanol.
I started with a SMC kit. Steve sold me all the stuff to switch to 2 nozzles...pressure gauge...nozzle and all..40 bux. I then got a shurflo pump. Steve just sent me his progressive controller modified to run a shurflow...havent installed it yet. I like Julios kit but i started out with Steve @ SMC and just like the service product i already get.
Head on up!! We can go out and waste some tires and methanol.
Oct 10, 2006 | 10:09 PM
#44
Originally Posted by Jamesbond2509
Erik
Good Point - I wouldnt want to rely on meth to make up the difference - I would need at least 60's to get to 700rwhp and might as well spend the money on the 98's. I think the walbro 255lph should be alright with the voltage booster, but your're right about the 42 pounders being too small.
I attached a good article from the KB website.
Good Point - I wouldnt want to rely on meth to make up the difference - I would need at least 60's to get to 700rwhp and might as well spend the money on the 98's. I think the walbro 255lph should be alright with the voltage booster, but your're right about the 42 pounders being too small.
I attached a good article from the KB website.
Thanks for that pic -- that confirms what I thought about FP -- the boost-a-pump increases the volume (like a second pump would) and the pressure is maintained. It doesn't help the injectors side, but looks like it does help with the volume issues.
I wonder what it does to the pumps longevity? I also am wondering about the heating up the fuel issues CB and others have mentioned. Definitely I concern where I live
Oct 10, 2006 | 10:10 PM
#45
Originally Posted by 1slow01Z71
I wonder if the built 65e will hold up to one glory pass in an attempt for a 10 second pass?
You never know.
Mine lasted a long time stock (3-4 months ). Of course, once I put in the FLT and a converter I was kicking myself for driving around losing all that umph the whole time
Oct 10, 2006 | 10:35 PM
#46
Thread Starter
Tin Foil Hat Wearin' Fool
iTrader: (36)
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Hey Erik, you think the stock 6L would hold up to nitrous out of the hole and say 15#s down the quarter in perfect weather? Allen Nelson would be there at the track to tweak it in person, there would be ALOT of meth involved Im sure. Just wondering if the gt-67 can support the hp I would need. I know Parish went 10s on his stock bottom end 6L but I dont remember all the facts about his setup. I would just do it for one run to hit a 10 then back it off.
Oct 10, 2006 | 10:56 PM
#47
Originally Posted by 1slow01Z71
Hey Erik, you think the stock 6L would hold up to nitrous out of the hole and say 15#s down the quarter in perfect weather? Allen Nelson would be there at the track to tweak it in person, there would be ALOT of meth involved Im sure. Just wondering if the gt-67 can support the hp I would need. I know Parish went 10s on his stock bottom end 6L but I dont remember all the facts about his setup. I would just do it for one run to hit a 10 then back it off.
Did you ever think about the costs if you just fix the 418 while you have it out, 317 heads and the STS and sell the 6.0 and use that money for the upgrade on the turbo you will need. Much time saved and money in the long run. I know you are thinking that you don't want to do the 418 turbo until you feel that you can do it and have the baddest SOB in the forum or country but how about letting that go and finish what you started and have a really fast 418 that is fund to drive with turbo instead of the baddest ex cab 4wd truck period. Hell if you did like I said you may just have that. Am I going to have to drive all the way to TX to slap you or will someone out there ablige me?
Oct 10, 2006 | 11:56 PM
#48
Originally Posted by 1slow01Z71
Hey Erik, you think the stock 6L would hold up to nitrous out of the hole and say 15#s down the quarter in perfect weather? Allen Nelson would be there at the track to tweak it in person, there would be ALOT of meth involved Im sure. Just wondering if the gt-67 can support the hp I would need. I know Parish went 10s on his stock bottom end 6L but I dont remember all the facts about his setup. I would just do it for one run to hit a 10 then back it off.
You're packing about 800lbs more than Jim, right? That's .8 right there. You really need a lot more HP than Jim made on those runs to match his times. If you are dead set on running the 6.0L and not fixing the big dog as Mark suggests, I'd shoot for 11's and be happy. An 11 second truck is fast as **** bro.
Oct 11, 2006 | 12:05 AM
#49
TECH Addict
Joined: Aug 2002
Posts: 2,209
Likes: 0
From: N. FL
There are multiple part numbers for that "hobs switch." They're labeled as an "Adjustable Pressure Switch" by NOS and you can get one through basically distributor. You'll need to tell them what it is and the pressure you want to work with. They come as low as 7psi(15660NOS- which I've used) and at least as high as 50psi(15685NOS).
NAPA does carry them, but you'll not only have to be "lucky enough" to get a good counterman to help you, but he'll need the book(probably ECHLIN) and you'll still prolly be guessing. I don't know that the book will list the pressures on all switches. They don't seem to have many of them either. I got one from there several yrs ago, and had to look it up myself.
NAPA does carry them, but you'll not only have to be "lucky enough" to get a good counterman to help you, but he'll need the book(probably ECHLIN) and you'll still prolly be guessing. I don't know that the book will list the pressures on all switches. They don't seem to have many of them either. I got one from there several yrs ago, and had to look it up myself.
Oct 11, 2006 | 12:07 AM
#50
i dont know if it is 800lbs. my truck is right at 5000lb's. an ext can isn't 5800 is it?
i cant find the video of me sneaking into the 10's but what i remember is a t76 wasn't enough to get it done turned up to 14psi. it would go higher but there wasn't any more power to be had above that point. just hotter air. i think i ended up at something like 13psi and a 75shot(the entire run).
i just checked my logs. i hit 80% on my 96's(really 108's) the last trip to the dyno. that should be 1250hp worth of fuel plus the meth.
i cant find the video of me sneaking into the 10's but what i remember is a t76 wasn't enough to get it done turned up to 14psi. it would go higher but there wasn't any more power to be had above that point. just hotter air. i think i ended up at something like 13psi and a 75shot(the entire run).
i just checked my logs. i hit 80% on my 96's(really 108's) the last trip to the dyno. that should be 1250hp worth of fuel plus the meth.