Racetronix limits with Nitrous
There really is no magic number of when a motor will let go. There are guys pushing more than that on here. As long as your tune is good the motor will live a decent amount of time.
Even sub 500rwhp with good tune have been destroyed, I have seen it happen to friends with pre 01s and one post 01.
Sure you can push these engines depending on the abuse, mileage and wear and tear. But Guaranteed its matter of when they'll let go and it wont be long in the mid 500 range.
Glad this was posted, as I'll be visiting this before the end of the year. Racetronix 255, Hot wire kit, 42# injectors, the whole 9. Hoping for a 150 plate shot. Makes me wonder if I should have done a dual pump from the get-go.
If the 255 won't keep up though, does the hotwire kit I have work for the dual pump from Lonnies? What about a single 340? I don't mind just pulling and swapping the pump if need be.
If the 255 won't keep up though, does the hotwire kit I have work for the dual pump from Lonnies? What about a single 340? I don't mind just pulling and swapping the pump if need be.
I assure you, there is more ppl with smoked motors caused by rod bolts letting loose and windowing the block with good tune above 550rwhp than not.
Even sub 500rwhp with good tune have been destroyed, I have seen it happen to friends with pre 01s and one post 01.
Sure you can push these engines depending on the abuse, mileage and wear and tear. But Guaranteed its matter of when they'll let go and it wont be long in the mid 500 range.
Even sub 500rwhp with good tune have been destroyed, I have seen it happen to friends with pre 01s and one post 01.
Sure you can push these engines depending on the abuse, mileage and wear and tear. But Guaranteed its matter of when they'll let go and it wont be long in the mid 500 range.
Carter01 on here has over 350 nitrous passes on here and Cam had hundreds of passes on his too. There are many others with stock bottom end motors that don't post often on here, Minytryker is one of them.
Most of the SBE guys whose motor has let go, lose a piston or lift a ringland before a rodbolt lets go.
I hit my stock bottom end ls1 with a 300 and the timing wasn't right and the motor let go. It hurt 2 pistons and bent 2 rods, no rodbolts broke. That scenario is what you will see most of the time here with guys pushing the limits. Just have to know what you are doing.
You could do a twin intank setup and have the other pump come on when the nitrous hits but the point of having the standalone is to use a good fuel for the spray and to be able to drive around on pump gas.
Glad this was posted, as I'll be visiting this before the end of the year. Racetronix 255, Hot wire kit, 42# injectors, the whole 9. Hoping for a 150 plate shot. Makes me wonder if I should have done a dual pump from the get-go.
If the 255 won't keep up though, does the hotwire kit I have work for the dual pump from Lonnies? What about a single 340? I don't mind just pulling and swapping the pump if need be.
If the 255 won't keep up though, does the hotwire kit I have work for the dual pump from Lonnies? What about a single 340? I don't mind just pulling and swapping the pump if need be.
Haha! that sounds complicated, at that point stand alone sounds easier. But back to the Racetronix pump... seems the safe range for it is 550 rwhp? Would like others input on how far they have taken it.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo To put a number on it and be safe? I am going to say yes.
Have I seen more on that kind of set? Yes, alot of times.
There is a car local to me using that setup and makes 538 rwhp on motor and sprays a 150 on top of that, all off the intank pump.
Have I seen more on that kind of set? Yes, alot of times.
There is a car local to me using that setup and makes 538 rwhp on motor and sprays a 150 on top of that, all off the intank pump.
Im making 550 RWHP with a single Racetronix Walbro 255 with Hot wire kit & a 100 shot.
Lonnie at Lonnies performance told me that the Walbro single pump is good for
550-600 RWHP Max.
My Cowl mounted Fuel Pressure Gage reads 60 psi at idle & 55 psi @ WOT on the Bottle.
I need to install a new GM intank Fuel Pressure Regulator.
Lonnie at Lonnies performance told me that the Walbro single pump is good for
550-600 RWHP Max.
My Cowl mounted Fuel Pressure Gage reads 60 psi at idle & 55 psi @ WOT on the Bottle.
I need to install a new GM intank Fuel Pressure Regulator.
There is so much hearsay and rumor spread in this thread it is ridiculous. Someday raise your hand if you have actually found the limit of these pumps on a nitrous car?
I know of a couple and it's well above this 550 number is everyone is talking about. You really need to break it down to lbs/hr for each setup. These pumps will only flow a certain amount of lbs/hr. Every combo will have a different lbs/hr as well so there is no certain hp number to look at. Yes 600-650 may be a safe number but I know I have made over that with a racetronix and Hotwire off the rail. Single .103 nitrous jet on a motor that made 430hp and ran 146 mph at 3350 lbs. Andy made similar power as well
Also when we both found the limit of these pumps and setup it was at the initial hit but after it kept up fine and recovered. Hmmmmm some food for thought....
Also think about what fuel jet everybody is using for these different hp jets... Hmmmmm
I know of a couple and it's well above this 550 number is everyone is talking about. You really need to break it down to lbs/hr for each setup. These pumps will only flow a certain amount of lbs/hr. Every combo will have a different lbs/hr as well so there is no certain hp number to look at. Yes 600-650 may be a safe number but I know I have made over that with a racetronix and Hotwire off the rail. Single .103 nitrous jet on a motor that made 430hp and ran 146 mph at 3350 lbs. Andy made similar power as well
Also when we both found the limit of these pumps and setup it was at the initial hit but after it kept up fine and recovered. Hmmmmm some food for thought....
Also think about what fuel jet everybody is using for these different hp jets... Hmmmmm
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
550RWHP is a nominal safe limit.
This factors in motors with higher BSFC, hot fuel and low voltage.
Always bank on worst case scenario to prevent motor damage esp with N2O.
This factors in motors with higher BSFC, hot fuel and low voltage.
Always bank on worst case scenario to prevent motor damage esp with N2O.
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
This is with the HW harness.
Running a HP pump on the factory wiring is foolhardy at best esp given the recognized problem with the 150-series factory bulkhead connector.
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
We do not recommend running a HP pump w/o a wiring upgrade PERIOD!
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
There is so much hearsay and rumor spread in this thread it is ridiculous. Someday raise your hand if you have actually found the limit of these pumps on a nitrous car?
I know of a couple and it's well above this 550 number is everyone is talking about. You really need to break it down to lbs/hr for each setup. These pumps will only flow a certain amount of lbs/hr. Every combo will have a different lbs/hr as well so there is no certain hp number to look at. Yes 600-650 may be a safe number but I know I have made over that with a racetronix and Hotwire off the rail. Single .103 nitrous jet on a motor that made 430hp and ran 146 mph at 3350 lbs. Andy made similar power as well
Also when we both found the limit of these pumps and setup it was at the initial hit but after it kept up fine and recovered. Hmmmmm some food for thought....
Also think about what fuel jet everybody is using for these different hp jets... Hmmmmm
I know of a couple and it's well above this 550 number is everyone is talking about. You really need to break it down to lbs/hr for each setup. These pumps will only flow a certain amount of lbs/hr. Every combo will have a different lbs/hr as well so there is no certain hp number to look at. Yes 600-650 may be a safe number but I know I have made over that with a racetronix and Hotwire off the rail. Single .103 nitrous jet on a motor that made 430hp and ran 146 mph at 3350 lbs. Andy made similar power as well
Also when we both found the limit of these pumps and setup it was at the initial hit but after it kept up fine and recovered. Hmmmmm some food for thought....
Also think about what fuel jet everybody is using for these different hp jets... Hmmmmm
550 as I asked earlier, is indeed the safe normal range for these pumps... glad we heard it from the horses mouth. And glad all the ridiculous info on this thread was helpful to some of us as intended.
Safe limit is all I was looking for, not trying to go above that, and just needed some type of confirmation. Not stupid enough to ruin my current 12k + build, and hate life.
Thank you all for the knowledge, debate and great ridiculous info!!!
Sorry for giving you technical info and why the hp info will change based on different factors. But that's ok spend uneeded money. I guess personal experience and experimental evidence doesn't count for much to people these days... Carry on people