The issue isn’t the day in question. Its the gear ratios of the car and how the dyno was set up to account for that. Kurts talon didn’t have enough fuel to support that pull, that is a fact. If anybody else dynoed higher/lower than they should have the variable in question is how the dyno was set up to reflect the actual load put on the motor. I’m not a dyno operator, but I do know that the mustang dyno does indeed have variables that can and need to be calibrated to the car. Perhaps somebody with more experience operating dynos can chime in. I just know the numbers don’t add up.
I don’t see a dual walbro setup mentioned. Searching for info on the car I don’t see one mentioned to be on this car. With a dual pump setup you have more than enough fuel for 800 plus wheel horse at 43psi base on those injectors. If it is on a single pump you shouldn’t have enough fuel to support 500-520whp to the wheels at the boost levels you are claiming.
I’m thinking you are out of fuel due to a single pump because those 1600’s can support more. If you are on a single pump these numbers are NOT correct. Sorry.
Anybody else want to chime in on the power a single walbro can support?
In my experience 480-520 whp is about all she has on mustang dynos and gasoline. On dynojets I have seen anywhere between 500-540whp. Of course this varies with the specific gravity of the fuel in use as well as the relative health of the pump and the voltage available to it.
Does T’s motor mount have a boost leak?
Does it really matter what the dyno numbers were? Isn’t a dyno mainly a tuning tool? There is no 2 dynos that are going to read the same even if they are the same model. There are just too many variables. I also like how some people in this thread think that running low 9s or high 8s at 160mph is a simple task. Driver skill and a properly setup car are key to a fast time no matter what kind of power your making. Tire selection, alignment, how you launch the car, etc. are only some of the basic things you need to think about if your trying to run respectable times especially with those power levels. anyways…good job jay/steve/garrett. Hope you run some good times.
As far as race gas goes VP C16 is a middle weight fuel with respect to specific gravity. What that means is that it can support a bit more HP than comparable pump gas especially pump gas that has 10% ethanol (most premium fuels). Also that 624 number I am sure is a max effort. That is just way high. I know that he modifies the walbro pumps to work better at higher pressures, but still that is a very high number. It is not the average, just so you know.
Still 710>624 and 690>624 so something is NOT right with that J&S dyno.
that number seems about right for tuning with e85
Also dual walboro setup on e85 only support around 850/900 Max in rwd world with base pressure at 58
i thought 1600cc injectors with e85 are usually maxed at around 700-800ish hp?
1)pay $20.00 at PRP
2)get in lane of choice
3)drive through water box and park at trip beam
4)red light
5)yellow lights
6)green light
7)let clutch out
8)press throttle and dont miss shifts
9)collect time slip from booth
10)post on pitspeed
need more help?
yes i do. CAn you help me achieve 700whp in my car and run 15’s. Thank you.
I do agree that a dyno is a tuning tool. As part of that tool you should be able to publish final results in the form of a dyno sheet and ideally back it up with some real world performance to certify your results. It also matters because this thing isn’t 5 or 10% off, its WAYYY off. Like 150-200whp off. Again I agree a dyno is a tuning tool but it is also a money maker. When your equipment is claiming higher values that competitors you get more business and that isn’t fair. When the numbers aren’t even close to living up to the hype, we have a problem. Another issue is that these elevated numbers almost always (but not every time) involve a car that J&S has tuned. Thus it could be viewed that they are doing it on purpose to garner buisness.
I agree that netting a good ET on a 710 whp car is difficult. Two issues however. This car is realistically netting 500whp give or take so traction won’t be a huge issue. Also trap speeds tend to stay about the same even with massive amounts of tire slip. In many cases more tire spin can actually increase trap speed. In the power category we are dealing with in an AWD car tire slip will increase trap speed. If this car genuinely puts down 710whp on a mustang dyno then it will have no issues trapping 155-165mph in full weight form. If it is more of a ~500whp car then you will see a high 120mph trap out of it, which is what I’m sure we will see if it ever makes it to the track. Speaking of the track, I’m sure this car will never produce any slips just as we have seen it won’t produce any dyno printouts. And not that we can believe them now, with over 4 days to photoshop something up it should be taken as a grain of salt.
I saw no mention of E85, is this car on E85? That was not mentioned in the original post. Still in the V8 world you have 8 injectors an evo only has 4…let me do the math…
yes Holidays car is always tuned on e85.
Do you know if he has a dual pump or not?
Ahaha another zingger !
If you paid attention you would learn rather than just jumping on a ship that is sailing away from reality.
Better yet, a soon to be sinking ship when people start putting 2 and 2 together.
Everything has a timer on it that leaves that place.
I think you need to post up dyno graphs for him if your such a supporter, or shut the fuck up…
Atleast when I did my build I posted video footage, and pictures of the graph.
As for your irrelevant comments about 700whp and 15.1, you were not there and you did not pull the motor apart afterwards, and i only ran that setup for that 2 months before i was forced to sell for reasons non related…
Its like pulling teeth here, 50 chiefs, 2 indians and no proof…
around these parts we order e85 in drums so its all consistent. Who buys it at sheets?
60lb injectors will Max around 700 rwhp on corn
I’m doing the math over and over here and it just isn’t realistic to support much more than 600 wheel hp assuming plenty of fuel pressure with the dual pumps and 1600’s. You are going to need four 1900-2000cc/min injectors in an evo to support 710hp claims on E85. Sorry.
Where do you buy E85 in drums? I have looked and can not find it.
am I suppose to lather, rinse, and repeat?