RE: Mountune extracts 684hp from 2.3 EcoBoost
Discussion
TheAngryDog said:
Confusing lag with boost threshold.
Not really. On commenting old school high hp builds there was definitely a big treshold, and I do count that as lag also. But commenting this engine, the torque curve suggests that there is not much of a treshold as torque is on a rise from the start (with reservations for rpm scaling of said graph potentially distorting the picture). But as long as torque is on the rise on a run in a given gear (this run quite short from the vid) we're basically witnessing the turbo spooling up, i.e a measure of lag. Typically once the torque curve is on a high plateau flat and torque is limited (typically a turbo will produce a peak shaped curve if let loose completely), there is enough gas flow to have minimal lag and spool isn't delayed because of lack of gas flow. Since there is quite a flat part and additionally peak power is made a good part past that plateau meaning torque isn't dropping very quickly thus power isn't entirely based on massive boost only, my conclusion is indeed that lag isn't all that bad Additionally, an EFR ball bearing turbo tends to spool fast for its size...
Edited by Onehp on Thursday 10th October 03:04
Wills2 said:
Robmarriott said:
BenGB said:
Hmm. They used to get 1,500bhp out of a 1.5l turbo engine back in the 80s in formula 1, but that doesn't mean it would last long enough to use as an everyday engine (or indeed another qualifying session back in those days). I wonder how long this one will last with short runs, cold starts, over-revving before its warmed up etc? Give me a nice big unstressed V8 any day!
Things have moved on quite a bit since 1986.gumsie said:
Yes, I have. Apart from a Scooby, what four cyls lack most is character. We can agree to disagree I suppose though?
I know you say most, I think the k20 honda is up there with the best. I did like the f4r in the old Clio too. Stuff got a bit w
k when they shoved turbos on everything like the focus rs for example and started introducing pops and bangs when ever you lift your foot off the throttle at 5 mphMikeGoodwin said:
I know you say most, I think the k20 honda is up there with the best. I did like the f4r in the old Clio too. Stuff got a bit wk when they shoved turbos on everything like the focus rs for example and started introducing pops and bangs when ever you lift your foot off the throttle at 5 mph
Don't even know what a K20 Honda is. Youtube time,........k when they shoved turbos on everything like the focus rs for example and started introducing pops and bangs when ever you lift your foot off the throttle at 5 mphiceicebaby1980 said:
To much power for the roads . Get a evo or scooby with around 350bhp decent suspension set up properly . Good tyres big break kit . Fast enough engaging to drive on the twisty . Most of all fun to drive . This is just a marketing ploy so all the Ford fan boys can nurse a semi
I hear this all the time and it’s a croc.350bhp is anaemic to some and earth shattering to others. Like most things it’s all relative.
apm142001 said:
ecs0set said:
It occurs to me that I find the prospect of a 684bhp turbo four significantly less interesting than a 250bhp N/A five or six. I think I may be getting old. Should I send back my PH card?
Agreed! BMW's old straight sixes spring to mind for me, especially...and I'm only just the wrong side of 30...P.S. I'd still like to try one of these mad motors though, just to see, maybe we have it wrong.
jontysafe said:
iceicebaby1980 said:
To much power for the roads . Get a evo or scooby with around 350bhp decent suspension set up properly . Good tyres big break kit . Fast enough engaging to drive on the twisty . Most of all fun to drive . This is just a marketing ploy so all the Ford fan boys can nurse a semi
I hear this all the time and it’s a croc.350bhp is anaemic to some and earth shattering to others. Like most things it’s all relative.
Edited by iceicebaby1980 on Thursday 10th October 19:27
iceicebaby1980 said:
jontysafe said:
iceicebaby1980 said:
To much power for the roads . Get a evo or scooby with around 350bhp decent suspension set up properly . Good tyres big break kit . Fast enough engaging to drive on the twisty . Most of all fun to drive . This is just a marketing ploy so all the Ford fan boys can nurse a semi
I hear this all the time and it’s a croc.350bhp is anaemic to some and earth shattering to others. Like most things it’s all relative.
Edited by iceicebaby1980 on Thursday 10th October 19:27
I find a Suzuki Swift sport fun and engaging. I also found my Westfield at 700bhp per tonne incredible engaging. Indeed if you weren’t engaged enough you’d be in a hedge. 😂
jontysafe said:
iceicebaby1980 said:
jontysafe said:
iceicebaby1980 said:
To much power for the roads . Get a evo or scooby with around 350bhp decent suspension set up properly . Good tyres big break kit . Fast enough engaging to drive on the twisty . Most of all fun to drive . This is just a marketing ploy so all the Ford fan boys can nurse a semi
I hear this all the time and it’s a croc.350bhp is anaemic to some and earth shattering to others. Like most things it’s all relative.
Edited by iceicebaby1980 on Thursday 10th October 19:27
I find a Suzuki Swift sport fun and engaging. I also found my Westfield at 700bhp per tonne incredible engaging. Indeed if you weren’t engaged enough you’d be in a hedge. ??
iceicebaby1980 said:
Think your missing the point . let me explain for the second time . In my opinion and it is only my opinion . So in the bigger scheme of things it dsnt really amount to much . Some of the best drivers cars . Seem to be around a certain power point . Which in my very unlimited driving ability. I’d find a well set up car around this point of power . Probably to be fast enough for the roads and my abilities . Even then depending on we’re you live . What access you have to decent roads . If your prepared to drive like a tit risk other road users lives . There wouldn’t be much of a time or place . Where you could safely open a high powered car up and exploit its potential. On a track of course you could . In a ideal world it would be nice to be able to fly road a country bend . At break neck speeds with out worry of ploughing into the back of a possession of horse riders .
Unusual posting style. Lots of short sentences. Some connected to others. Some not. Do you work. Sending Telegrams? 
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