Efr 9180 Dyno plots on a yb
28-11-2020, 02:04 PM
#241
Im gonna go ahead and say it’s not gonna bad considering it’s power, it’s built by one of the countries best and on 9180 so it’s def not gonna be worse than any other YB out there that’s running 9180.
These two cars are also out there being used properly unlike lots of other big hp cossies that spend their lives being trailered to static shows just so they can put a good graph in the window 😬😬😬
Cheers Paul
These two cars are also out there being used properly unlike lots of other big hp cossies that spend their lives being trailered to static shows just so they can put a good graph in the window 😬😬😬
Cheers Paul
Although it is crazy the people who spend a fortune to attain a graph...and then never use the cars whether to race or even drive the damn things.
28-11-2020, 05:52 PM
#243
Advanced PassionFord User
it’s mental power, both of em.
Cant believe Dave’s done that on pump.
Tuners keep pushing these boundaries...
Cheers Paul
28-11-2020, 06:04 PM
#244
Advanced PassionFord User
it’s mental power, both of em.
Cant believe Dave’s done that on pump.
Tuners keep pushing these boundaries...
Cheers Paul
29-11-2020, 04:07 PM
#246
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Im gonna go ahead and say it’s not gonna bad considering it’s power, it’s built by one of the countries best and on 9180 so it’s def not gonna be worse than any other YB out there that’s running 9180.
These two cars are also out there being used properly unlike lots of other big hp cossies that spend their lives being trailered to static shows just so they can put a good graph in the window 😬😬😬
Cheers Paul
These two cars are also out there being used properly unlike lots of other big hp cossies that spend their lives being trailered to static shows just so they can put a good graph in the window 😬😬😬
Cheers Paul
I don't think that's correct Paul about being no less responsive in terms of spool compared to any other yb out there on a 9180, to make over 900 hp will require big ports and big cams which will I believe have the effect of moving the spool up into the higher rpms to make more power at the top
Gotta trade one for the other there's no free lunch as the saying goes
My gtr is the same response is pants really below 5000 rpm but makes huge power 6000-8500 rpm
29-11-2020, 05:19 PM
#247
Advanced PassionFord User
I don't think that's correct Paul about being no less responsive in terms of spool compared to any other yb out there on a 9180, to make over 900 hp will require big ports and big cams which will I believe have the effect of moving the spool up into the higher rpms to make more power at the top
Gotta trade one for the other there's no free lunch as the saying goes
My gtr is the same response is pants really below 5000 rpm but makes huge power 6000-8500 rpm
Gotta trade one for the other there's no free lunch as the saying goes
My gtr is the same response is pants really below 5000 rpm but makes huge power 6000-8500 rpm
at 900hp it’s gonna be on a big exhaust housing, big valves, big ports etc.
so bit pointless worrying about what it’s doing down out of the powerband esp as it’s primarily a drag car.
Bit I’ve no doubt comp ratio, stroke, cams etc all help get the best from his setup so given it’s power I can see it being massively different to other 700/800hp 9180 setups.
Just the housing change in yours didn’t make a crazy difference in spool so that just goes to show you...
Cheers Paul
29-11-2020, 06:56 PM
#248
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Thats exactly what I’m saying!
at 900hp it’s gonna be on a big exhaust housing, big valves, big ports etc.
so bit pointless worrying about what it’s doing down out of the powerband esp as it’s primarily a drag car.
Bit I’ve no doubt comp ratio, stroke, cams etc all help get the best from his setup so given it’s power I can see it being massively different to other 700/800hp 9180 setups.
Just the housing change in yours didn’t make a crazy difference in spool so that just goes to show you...
Cheers Paul
at 900hp it’s gonna be on a big exhaust housing, big valves, big ports etc.
so bit pointless worrying about what it’s doing down out of the powerband esp as it’s primarily a drag car.
Bit I’ve no doubt comp ratio, stroke, cams etc all help get the best from his setup so given it’s power I can see it being massively different to other 700/800hp 9180 setups.
Just the housing change in yours didn’t make a crazy difference in spool so that just goes to show you...
Cheers Paul
Yeah the spool didn't change much on the dyno with the housing change but there is noticeable better response from Data logs on the road
On an engine dyno the load applied is alot higher than motorworx so any difference in spool will show up more on an engine dyno compared to dyno dynamics rollers
IL show you what I mean, look at this old log of rods
That's a gt42 looks like it spools great on the superflow engine dyno, but then that exact same engine and tune ran at motorworx ran this
And it now looks garbage on the rollers 🤣😂
The rollers don't apply that much load so spool gains won't clearly show what could be seen on the road
That's how I understand anyways
29-11-2020, 07:18 PM
#251
But there are also various shootout modes to sort of align with an expected load/acceleration rate. So it's not quite as clear cut as that
And you also do not need to use the shootout modes.
And...they will yield different results. Which again then brings into question any "accuracy" claims about dynos, even more so trying to compare against others.
https://www.pistonheads.com/gassing/topic.asp?t=1777659
https://www.airboytuning.com/archives/103
And you also do not need to use the shootout modes.
And...they will yield different results. Which again then brings into question any "accuracy" claims about dynos, even more so trying to compare against others.
https://www.pistonheads.com/gassing/topic.asp?t=1777659
https://www.airboytuning.com/archives/103
29-11-2020, 07:41 PM
#252
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But there are also various shootout modes to sort of align with an expected load/acceleration rate. So it's not quite as clear cut as that
And you also do not need to use the shootout modes.
And...they will yield different results. Which again then brings into question any "accuracy" claims about dynos, even more so trying to compare against others.
https://www.pistonheads.com/gassing/topic.asp?t=1777659
https://www.airboytuning.com/archives/103
And you also do not need to use the shootout modes.
And...they will yield different results. Which again then brings into question any "accuracy" claims about dynos, even more so trying to compare against others.
https://www.pistonheads.com/gassing/topic.asp?t=1777659
https://www.airboytuning.com/archives/103
Yeah various shoot out modes for cylinders and how many wheels driven or use none at all
Shoot44 would appear to apply less load than a road pull anyways from datalogs
29-11-2020, 08:08 PM
#253
Except it isn't for cylinders really. They're just trying to simplify it that way......where does a 3cyl go ? 5cyl ?
it just means a lower cylinder count will put a lesser load on the rollers than a higher...because anticipated power will be lower, which kind a messes things up then if that 4cyl makes a lot of power, so maybe a 6F, 8F might be a more realistic ramp to run
it just means a lower cylinder count will put a lesser load on the rollers than a higher...because anticipated power will be lower, which kind a messes things up then if that 4cyl makes a lot of power, so maybe a 6F, 8F might be a more realistic ramp to run
29-11-2020, 08:28 PM
#254
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Except it isn't for cylinders really. They're just trying to simplify it that way......where does a 3cyl go ? 5cyl ?
it just means a lower cylinder count will put a lesser load on the rollers than a higher...because anticipated power will be lower, which kind a messes things up then if that 4cyl makes a lot of power, so maybe a 6F, 8F might be a more realistic ramp to run
it just means a lower cylinder count will put a lesser load on the rollers than a higher...because anticipated power will be lower, which kind a messes things up then if that 4cyl makes a lot of power, so maybe a 6F, 8F might be a more realistic ramp to run
Yeah that is a very good point Steve about using a more suitable mode
I just like shoot 44 so my results are comparable to rods
29-11-2020, 08:33 PM
#255
Absolutely, if you're trying to compare against other graphs from before, you'd need to use the same mode...and is the intention of those modes.
But it doesn't always give a true or correct reflection of what's going on, and in these cases of how a setup may spool. Although on a 2wd car....it may never see that either unless it has good traction
But it doesn't always give a true or correct reflection of what's going on, and in these cases of how a setup may spool. Although on a 2wd car....it may never see that either unless it has good traction
09-01-2023, 12:19 PM
#256
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Thought I'd add this video in here as it's on road real world data of boost threshold
Engine is being run in so only 1.6 bar of boost but video is in 3rd gear gently rolling into throttle full boost by 4000 rpm, 2150 cc mad spec yb motor.
Engine is being run in so only 1.6 bar of boost but video is in 3rd gear gently rolling into throttle full boost by 4000 rpm, 2150 cc mad spec yb motor.
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stevieturbo (09-01-2023)
14-01-2023, 08:48 AM
#259
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Compression ratio is up now aswell but so far tune hasn't needed any alteration
2.2 bar at 4100 rpm from datalog
27-01-2023, 03:48 PM
#260
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Other videos were 1st and second gear showing loads of wheelspin, current gearing and tyres is 96 mph top of second gear 😂🤣 lol
Just looking at rpm of video run started at 3000 rpm which is 50 mph, 4000 rpm is 67 mph, with 6000 rpm being 101 mph.
So video is effectively 50-100 mph pull in third gear, with flat out in 3rd gear being 142 mph lol
It looks to be in the 3-4 seconds range 60-100 mph.
I think when tyres need changing will definately be going smaller as current tyres are 25.4" tall, current top speed is 221 mph in 5th 8500 rpm, just changing to a 23.6" tyre brings that down to 205 mph with a Toyo t1r 235/30/18
27-01-2023, 04:41 PM
#261
Mine at present would be about 255mph in 5th if it ever did 8500rpm.
But mine is tall, largely so the top speed for 1/2 mile or whatever can be done in 5th. A lot of fast cars in the US would have theirs geared to hit top speed in 4th, simply as 4th is the strongest. Doing so would have huge detriment to the lower speed driving though
Even mine is very tall, but I can get away with it due to the large engine. It does drive a little nicer with a shorter diff though.
Do you have a shorter diff option ?
But mine is tall, largely so the top speed for 1/2 mile or whatever can be done in 5th. A lot of fast cars in the US would have theirs geared to hit top speed in 4th, simply as 4th is the strongest. Doing so would have huge detriment to the lower speed driving though
Even mine is very tall, but I can get away with it due to the large engine. It does drive a little nicer with a shorter diff though.
Do you have a shorter diff option ?
27-01-2023, 05:53 PM
#262
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Mine at present would be about 255mph in 5th if it ever did 8500rpm.
But mine is tall, largely so the top speed for 1/2 mile or whatever can be done in 5th. A lot of fast cars in the US would have theirs geared to hit top speed in 4th, simply as 4th is the strongest. Doing so would have huge detriment to the lower speed driving though
Even mine is very tall, but I can get away with it due to the large engine. It does drive a little nicer with a shorter diff though.
Do you have a shorter diff option ?
But mine is tall, largely so the top speed for 1/2 mile or whatever can be done in 5th. A lot of fast cars in the US would have theirs geared to hit top speed in 4th, simply as 4th is the strongest. Doing so would have huge detriment to the lower speed driving though
Even mine is very tall, but I can get away with it due to the large engine. It does drive a little nicer with a shorter diff though.
Do you have a shorter diff option ?
Yes mate, currently have a 3.54 that rod fitted for top speed, but I can get a 4.09 or a 4.55 it's 10.5" Jag
With the relatively good spool at 4000 rpm I've got a decent window of power rpm to use to keep it on the boil
26-03-2023, 05:45 PM
#263
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It would be really good I reckon, I'm rwd approx 1400 kg 730 hp 580 lbft and struggle to get power down below 100 mph, but with your 4wd grip will be far better, will be a rocket 💪👍
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