Yankie Turbo up for grabs!
- Thread starter 924Srr27l
- Start date
924Srr27l
New member
PSH said:
More is not always better, drivability and a nicer delivery and powerband for road use, or even race use.
I had a1.9D turbo Vivaro Van remapped once , the increased boost came in at a lower RPM and much more abruptly to the point where it would wheelspin too easily
and hence I was slower getting away at my favourite set of traffic lights!
I got the company to take it off, as they offered a money back guarantee, they were surprised because most (If not all) of the boy racers want the biggest
and most dramatic shove / whoooosh they can get...and besides wheel spinning is cool! (To them!)
I also had a similar issue with a Racing engine which was tuned for 5 bhp more from 39 to 44 (A 125cc two stroke) which then became so much less driveable
my laptimes were slower, as it was a pig to drive with the power like an on off switch!
As Pirelli said on one of there Slogan marketing campaigns "Power is nothing without control"
R
PSH
PCGB Member
Not an issue on a well sorted 951 with LSD...drivability, even with masses of extra power isn't going to have much impact on grip. As my son commeted when setting up my car recently...'the grip is amazing' were his words...well, perhaps a little more colourful... Spinning the wheels is something that just doesn't happen with the LSD box..my original box didn't have LSD and was easy to spin the wheels with the standard 220bhp.... you'd have to drive like a hooligan to spin the wheels on my car today, even with all that extra power on tap. But that is not how you get the best acceleration from a 951. .3rd gear is where you really let fly and show the world what driving a 951 is all about...
924Srr27l
New member
PSH said:
Sure any open differential spins one wheel, even as I said on my van! and a locked diff plate / geared etc..stops this happening
But too much Power spins wheels (You've probably got 260+ bhp per ton) and very long gearing (3.3FDR) presumably if a straight was long enough over 165+mph
An 2.0 N/A MX5 with half your power (And Less bhp per ton) would lap way faster than you at any Uk track where you'd not use 5th gear and even 4th gear that much.
You'd not be changing up early in the RPM band, (short shifting) on a circuit as it's slower unless you were mid corner...
If you changed the FDR to 4, Lightened the car by 400Kg and added 100bhp then you'd experience some rear wheel slip!
R
PSH
PCGB Member
hmm.. I haven't really looked at bhp per ton but would suspect it's more like 300bhp, remember mines an 86, 100kg lighter than an 89...plus I'd be very upset at only reaching 165mph, try 180mph+ and that it would sit at all day and it wouldn't need that long a straight to get there either, redline is approx 7100 and it will hit that in top.......trust me when I say that an Mx5 NA is not going to bother me in any shape or form on the road... a track would require the car to be set up for that purpose, it's not, it's a daily driver which if the need arises will see of most things out there.
'Changing up early'? haha... I wish, sometimes the damn thing is at the redline before I have even thought about changing up, this is a recent phenomenon after the bigger injectors were fitted. I'm still learning to drive the beast since my son returned it to me, not easy with just the weekly run for essential food shop to practice with....
'Changing up early'? haha... I wish, sometimes the damn thing is at the redline before I have even thought about changing up, this is a recent phenomenon after the bigger injectors were fitted. I'm still learning to drive the beast since my son returned it to me, not easy with just the weekly run for essential food shop to practice with....
924Srr27l
New member
It just depends what you've done and driven experienced Pete,
Road car's with a lot of power (and that's subjective to many people, what's a lot for you is different for others? 100bhp, 250bhp 400, 800, 2000bhp? etc...)
are not as exhilarating or can lap a race circuit as fast as a Fully prepared Race car.
So in other words something like an MX5 on a Uk motorway will of course not be able to keep up in a straight line with a car twice the power, but
on twisty Uk roads and even more so on Race circuit it'll beat (Faster laptime) car's that have twice or more the power..
Anyone can be taught to press a pedal in a straight line! but for me and many others it's the cornering and braking forces that require a lot more skill
and talent to combine a fast circuit lap.
This Toyota MR2 Turbo with 300+bhp only reaches 131mph on the Long Straight @ Spa belgium
https://www.youtube.com/watch?v=KVraRpV3SuE
Your car wouldn't be able to go any faster in it's current state (Road suspension & Tyres) but even if it was raced prepared you may find another 10mph
One example is the Moto GP Bikes that can top 200+mph, are 30 seconds slower per LAP! @ Silverstone Race circuit than the Formula one record....
Why ? Because they can't corner or brake anywhere near as good.
This is also the difference (30 seconds a lap) for my 924 @ Oulton Park when comparing track days I've done in Road Versus full race trim!
R
Road car's with a lot of power (and that's subjective to many people, what's a lot for you is different for others? 100bhp, 250bhp 400, 800, 2000bhp? etc...)
are not as exhilarating or can lap a race circuit as fast as a Fully prepared Race car.
So in other words something like an MX5 on a Uk motorway will of course not be able to keep up in a straight line with a car twice the power, but
on twisty Uk roads and even more so on Race circuit it'll beat (Faster laptime) car's that have twice or more the power..
Anyone can be taught to press a pedal in a straight line! but for me and many others it's the cornering and braking forces that require a lot more skill
and talent to combine a fast circuit lap.
This Toyota MR2 Turbo with 300+bhp only reaches 131mph on the Long Straight @ Spa belgium
https://www.youtube.com/watch?v=KVraRpV3SuE
Your car wouldn't be able to go any faster in it's current state (Road suspension & Tyres) but even if it was raced prepared you may find another 10mph
One example is the Moto GP Bikes that can top 200+mph, are 30 seconds slower per LAP! @ Silverstone Race circuit than the Formula one record....
Why ? Because they can't corner or brake anywhere near as good.
This is also the difference (30 seconds a lap) for my 924 @ Oulton Park when comparing track days I've done in Road Versus full race trim!
R
PSH
PCGB Member
I'm well aware of the difference in driving fast on twisty roads between an NA and a turbo, I can't say that I ever found my car or my driving wanting, even when in standard trim... Today I don't risk such things, in the past yes and great fun it was, just a matter of taking one's time until the road cleared to shoot past any pesky NA slowing you down.. been there, got the T-shirt.
I don't know what the gear ratio's are on the Mr2 so can't really equate... I can say that my car on standard ratio's hits that speed (131mph) at 6k rpm in 4th with another 20+ mph to go before redline and then I have that very long 5th to carry me on. Yes, things are much different on the track, no car can reach it's full potential on track as the straights are just not long enough, but yes I agree, no bike also would be able to go faster than a car due to what speed is lost in cornering. Rockingham might be fun without the midfield section though, although I believe that track has now closed.
This is all speculative though, I will never take my car on a track, (I have been on a track in a 400+ 951, nothing that day was going to bother it) nor will I drive it flat out on the road, I will, however, continue to enjoy shocking those who try it on, but only for a few hundred yards though, that's all I need..
I don't know what the gear ratio's are on the Mr2 so can't really equate... I can say that my car on standard ratio's hits that speed (131mph) at 6k rpm in 4th with another 20+ mph to go before redline and then I have that very long 5th to carry me on. Yes, things are much different on the track, no car can reach it's full potential on track as the straights are just not long enough, but yes I agree, no bike also would be able to go faster than a car due to what speed is lost in cornering. Rockingham might be fun without the midfield section though, although I believe that track has now closed.
This is all speculative though, I will never take my car on a track, (I have been on a track in a 400+ 951, nothing that day was going to bother it) nor will I drive it flat out on the road, I will, however, continue to enjoy shocking those who try it on, but only for a few hundred yards though, that's all I need..
924Srr27l
New member
PSH said:I'm well aware of the difference in driving fast on twisty roads between an NA and a turbo, I can't say that I ever found my car or my driving wanting, even when in standard trim... Today I don't risk such things, in the past yes and great fun it was, just a matter of taking one's time until the road cleared to shoot past any pesky NA slowing you down.. been there, got the T-shirt.
I don't know what the gear ratio's are on the Mr2 so can't really equate... I can say that my car on standard ratio's hits that speed (131mph) at 6k rpm in 4th with another 20+ mph to go before redline and then I have that very long 5th to carry me on. Yes, things are much different on the track, no car can reach it's full potential on track as the straights are just not long enough, but yes I agree, no bike also would be able to go faster than a car due to what speed is lost in cornering. Rockingham might be fun without the midfield section though, although I believe that track has now closed.
This is all speculative though, I will never take my car on a track, (I have been on a track in a 400+ 951, nothing that day was going to bother it) nor will I drive it flat out on the road, I will, however, continue to enjoy shocking those who try it on, but only for a few hundred yards though, that's all I need..
Ah well straight lines, each to there own...
What about some whoooosh / wheels spinning drifting?
https://www.youtube.com/watch?v=DXiOBlAVYyw
R
924Srr27l
New member
PSH
PCGB Member
I really don't get 'drifting', I just see it as abuse... one of my boys is into that, in fact, he and his son are building a BMW drift car with a welded diff. But then he likes a bit of drifting.. there's some video of him in his Cossie at the Ace Cafe some years back drifting around the roundabout outside...That was in his Sierra, today he has his 500bhp Escort Cosworth... mind you, he blew his turbo a couple of weeks ago, it's currently being rebuilt...he's also know for blowing Quaife diffs, even though they have a lifetime guarantee...lol
Me, I drive nice and sedately in my old age, hell, even my wife says that I drive like an old man these days, but then she is used to being with me in my younger, madder years...if I wanted my car to go really fast to prove a point on the track, I'd ask son number 1 to set it up and son number 2 to drive it... now he is totally mad but has the skill to go with it...I refuse to get in the car with him these days, my old ticker just can't keep up...
Me, I drive nice and sedately in my old age, hell, even my wife says that I drive like an old man these days, but then she is used to being with me in my younger, madder years...if I wanted my car to go really fast to prove a point on the track, I'd ask son number 1 to set it up and son number 2 to drive it... now he is totally mad but has the skill to go with it...I refuse to get in the car with him these days, my old ticker just can't keep up...
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