Search found 396 matches
- Wed Apr 24, 2024 5:46 pm
- Forum: Engine Tech
- Topic: Blown E85 EFI No Aftercooler
- Replies: 6
- Views: 317
Re: Blown E85 EFI No Aftercooler
It's always been on E 85. It made 625 hp on a hub dyno with 1000cc Bosch injectors and a 525lph pump. This should be enough for the added fuel it will need. The two after coolers sat on top of the manifold runners and looked quite restrictive to flow. I'll add water/meth before the blower if necess...
- Sun Apr 21, 2024 7:21 pm
- Forum: Engine Tech
- Topic: Blown E85 EFI No Aftercooler
- Replies: 6
- Views: 317
Re: Blown E85 EFI No Aftercooler
Roots, Screw, or Centrifugal (Procharger, Vortech, ESS)? Roots style blowers like upstream fuel, like a plate under the hat. Screw blowers can also be run this way. Holley, Fueltech or Haltech systems can run a few injectors (or a whole set of '8) at a reduced fuel rate and let the ECM trim the fuel...
- Sun Apr 21, 2024 8:11 am
- Forum: Chassis / Suspension / Body
- Topic: GM Brake prop valve piston which way ?
- Replies: 2
- Views: 99
Re: GM Brake prop valve piston which way ?
The bottom pic in your post shows the valve/shuttle pointing backwards as the pintle sticks out the end of the valve body. One cutaway cutaway diagram two more cutaway versions 62-67 Nova cutaway If you use google, insert "before:2023" and then type in your search, you can get a lot of ima...
- Sun Apr 21, 2024 7:27 am
- Forum: Engine Tech
- Topic: E85 Advice
- Replies: 15
- Views: 873
Re: E85 Advice
Here are the specs for E85 in the US. It's blended in the tanker at the fuel depot/terminal. YMMV.
- Wed Apr 17, 2024 8:54 am
- Forum: Engine Tech
- Topic: Resonator placement
- Replies: 24
- Views: 1154
Re: Resonator placement
Sound bouncing off the ground from single wall exhaust pipes back up into the floor, rear of cab, and front of box can also be excited by the reflected sound to cause "drone." Even large glass windshields can get excited by pressure pulsations (exhaust) or structural vibrations (uninsulate...
- Tue Apr 16, 2024 8:52 am
- Forum: Engine Tech
- Topic: 496 Drag Test REDO.............
- Replies: 39
- Views: 2130
Re: 496 Drag Test REDO.............
For the OP, here's a screenshot from an ET Predictor based on Pat Hale's Performance Racing Atmosphere calculations. (a modified version of SAE J1349) I believe Larry's program uses Pat's CF calculations. I also use some formulas off of epi-eng.com for water vapor calcs and such. The screenshot has ...
- Sat Apr 13, 2024 8:21 pm
- Forum: Engine Tech
- Topic: Fuel flow restriction
- Replies: 6
- Views: 417
Re: Fuel flow restriction
What was the original engine in the truck?
What’s the fuel pressure at full load at 5600?
A 1/4” fuel line doesn’t usually feed a V8 with a redline over 4500rpm.
What’s the fuel pressure at full load at 5600?
A 1/4” fuel line doesn’t usually feed a V8 with a redline over 4500rpm.
- Wed Apr 10, 2024 7:32 pm
- Forum: Engine Tech
- Topic: Highest power exhaust for GSX-R750 L1 2011-2023?
- Replies: 116
- Views: 505007
Re: Highest power exhaust for GSX-R750 L1 2011-2023?
Any opinions about how to best track the cooling system efficiency for the GSX-R750 engine? You need to know 3 fundamental quantities: A water pump map of flow vs RPM, (SAE-2004-32-0084 does have pump flow rate for a 600cc bike engine in an FSAE car, otherwise pull the pump off and drive it externa...
- Sat Mar 30, 2024 8:18 am
- Forum: Engine Tech
- Topic: Highest power exhaust for GSX-R750 L1 2011-2023?
- Replies: 116
- Views: 505007
Re: Highest power exhaust for GSX-R750 L1 2011-2023?
I don't think a gixxer 1000 is allowed in Extreme Kross Kart. The other two numbers for runs 128 and 130 are the 750.
- Fri Mar 29, 2024 9:02 am
- Forum: Engine Tech
- Topic: An other mad scientist
- Replies: 4
- Views: 758
Re: An other mad scientist
It makes a different sounding 6hp mini-bike engine as seen in the video. Not a threat to modern engine design...
- Tue Mar 26, 2024 3:30 pm
- Forum: Engine Tech
- Topic: Bill Mitchell World Products Mopar 446 RB build
- Replies: 10
- Views: 803
Re: Bill Mitchell World Products Mopar 446 RB build
As long as you don't do silly things like clearance the rockers for valve retainer clearance you should be fine. I don't see that that block is main priority oiling. I'd install an oil pressure cut-off switch to minimize badness when a rocker lets go and the lifter leaves its hole. You're using rest...
- Thu Mar 21, 2024 4:56 pm
- Forum: Engine Tech
- Topic: battery tech
- Replies: 11
- Views: 668
Re: battery tech
A lot of drag cars, including my brother, use 16v batteries, whether AGM or LiFePo. AGMs in my experience, are not light, in fact they can be heavier than FLA batteries. Pick your poison in the link below.
https://www.summitracing.com/search/par ... volts/16-v
https://www.summitracing.com/search/par ... volts/16-v
- Mon Mar 18, 2024 8:14 am
- Forum: Engine Tech
- Topic: 401 sbc ready for the Dyno
- Replies: 141
- Views: 7275
Re: 401 sbc ready for the Dyno
I wonder what's with the 1050 having the highest manifold Vac, implies it's the most restrictive. Something isn't right with the sensor. I'm not taking it at face value. The highest flowing showing the highest restriction and lowest cfm least restriction. Hopefully the tech will fix that too. Same ...
- Mon Mar 11, 2024 3:44 pm
- Forum: Engine Tech
- Topic: Service life of 6mm stem Ti valves.
- Replies: 9
- Views: 658
Re: Service life of 6mm stem Ti valves.
I believe he’s referring to the moment on the valve stem due to the valve head returning cocked. Anyways, the OP’s valve head is 1.84” and not 2.18” so there is that… Either way, the tensile or bending on the stem is going to be due to the impulse at impact, which is a function of the cam lobe and v...
- Sun Mar 03, 2024 9:56 am
- Forum: Engine Tech
- Topic: Chamge to Ti intakes and 50 degree seats?
- Replies: 27
- Views: 1384
Re: Chamge to Ti intakes and 50 degree seats?
Manley 2.35 stainless intakes in 440-1s modified to emulate 572-13s will last a bit over 1000 laps before the head of the valve cracks. This is with an Isky solid roller with .460/.450 cam lift using 1.7 rockers at 7-7200rpm and a World block at 572 cid. BTDT, didn't get the prize. For the OP, that'...