A perfect day @ Perfect touch..now with dyno + pics

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EarL
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by EarL »

MR2lover wrote:Heres Back :mrgreen:

Very good torque curve nath but christ that thing is laggy you dont cross the 200ftlb line to 5500 rpm and thats a 4th gear pull, bet first and second gear is even worse too as not so as much load is created. No way that thing will create full boost in 1st, 2nd and i will be just in 3rd

End of day it revs to 8k so aint that bad

TBH i bet the car aint that bad on fuel also as the injector duty wont be anything until 5500rpm but it will drink it after that :mrgreen:

:shock:

At 3500rpm, it hasn't even hit 100bhp!

Waaaaay too laggy for my liking... but then, it ain't my car. :wink:

EarL.
Sable Grey 2004 MkIII Roadster

Once an MR2 owner, ALWAYS an MR2 owner!
MR2lover

Re: A perfect day @ Perfect touch..now with dyno + pics

Post by MR2lover »

Waaaaay too laggy for my liking


Me too!!!

you need to get a gt series on there matey, lag will be dramatically reduced. The best gt dealer in the coutry is just round the corner from you too. Tim will sort you out 8)
TBDevelopments

Re: A perfect day @ Perfect touch..now with dyno + pics

Post by TBDevelopments »

trust me nath knows who i am, were usually playing each other up over something or other.

:tongue:

Tim
xxxx
EarL
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by EarL »

MR2lover wrote:
Waaaaay too laggy for my liking


Me too!!!

you need to get a gt series on there matey, lag will be dramatically reduced. The best gt dealer in the coutry is just round the corner from you too. Tim will sort you out 8)

Tim, I think Ryan's hankering for sponsorship mate. :lol:

EarL.
Sable Grey 2004 MkIII Roadster

Once an MR2 owner, ALWAYS an MR2 owner!
tonigmr2
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by tonigmr2 »

Has Mikejc got a dyno plot with that GT3071 yet, would be V interesting to see a comparison!
T
TBDevelopments

Re: A perfect day @ Perfect touch..now with dyno + pics

Post by TBDevelopments »

GT3076r :wink:

Tim
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Century Motorsport »

depends on what you like in a car really. I personally love the lag because you have nothing then all of a sudden you cant change gear quick enough!!

For normal driving its perfect - you can drive round off boost all day like a normal car then when you want a race you have a beast.

When driving hard you're never out the power band so if you have a turbo that spools @ 2k it makes no od's. I like to think that i have the caliber to keep it spooled up no matter how twisty the track or road so in that sense its a perfect application for my needs!!!

I also love lulling the opposition into a false sense of victory...... like if i pootle off the lights waiting for spool up their off then all of a sudden im gone and their sat there wondering what the hell happened!!!!

BTW Ryan - 1st gear 1.2bar - 2nd gear onwards is full boost!!!

Glad you made it on here JJ =D>

Nathan
Builders of the the UK's first 9second MR2 - 9.722 @ 148 MPH ----- 07947883103 ---- www.centurymotorsport.com
Mikejc
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Mikejc »

tonigmr2 wrote:Has Mikejc got a dyno plot with that GT3071 yet, would be V interesting to see a comparison!
T


Not yet T. The idea was to have a map sorted to enable us to run race fuel and then pay Thor a visit with an aim of getting some figures from V Power and the C16. Unfortunately Dave Rowe is off to OZ this Sat & he wont be back for 3 weeks! So we'll have to wait for his return before putting our runs in. That way it's 2 birds one stone ;)

From the logs we've pulled from the Motec so far I can tell you that we are making full boost (1.9bar) by 3700rpm and peek torque at around 4200rpm. The beauty of which is that they are both held all the way to the redline :)

I'll report back once we've run at Thor in the near future ;)

Mikejc
JJ
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by JJ »

When driving hard you're never out the power band


Agreed .... theres so many reasons why not to have a laggy turbo ... my argument has always been change your driving style. You'll only experience lag on the initial take off.

Now I jump out of a rev 2 into a rev 3 with a ct-26 hybrid ... and its noticable, I jump out of them both and jump into mine and its like land of the geriatrics until the rpm scale is pushed ! Okay... so the engine setup isn't gonna win any prises for traffic light grand prix around the town.. the torque is simply generated at the top of the rev band .... but something that pulls soo well at the top end shouldnt' be frowned upon... I'm used to driving hondas and always had to ring their necks to get anything out of them... I dont mind it.... you just have to accomodate for the change in driving style !

As a friend tested mine... complained how laggy it was intially... sure... drive it another 15 mins and change your driving style ... he was absolutely blown away with how quick it was and running such low boost too ! Taken away his poor perception of laggy turbo's !

Sure... I know, the more torque you generate lower down the rpm scale, the faster car you'll have around the streets / circuits etc

I have a power band from 5K to 8500 rpm ( 3.5k rpm )... as nathan has mentioned, each time you change up, you're still above 5K rpm.... enough to leave that adrenelin rush each time. Given the driving is on a track, you're up in the high rpms anyway.

The key is knowing how to drive the engine. O:)

When I took a boosted rev 2 on the track, it was very quick, but my engine power / torque range was 2500 rpm to 5500 rpm ( 3K rpm ) .. and changing up.. you could see the car losing on acceleration anything greater than 5500 rpm. Now I was always dissapointed in this.... why have an engine that spins so well, but the turbo can't keep up ??!! :-k

One thing I was aiming for with my setup, gearbox / driveshaft longivity. :D I have history of driving it a little too hard and the results are more hassle for me to pull the box out and more moths being exposed to atmosphere. A little lag helps reduce the shearing torque transfer of the engine, especially if its trying to break traction too thus increasing life of the drivetrain and reducing clutch wear. All adds up.

My comments are not intended to spark off debates of lag on turbochargers, but to open the minds of those who comment without optimism.... when on full chat, they can still produce serious grunt, but just in a different rev range. :wink:
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
EarL
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by EarL »

Well put JJ. =D>

I guess it's horses for courses and all that. Some people (myself included) want a motor that pulls hard from as low down in the rev range as possible, as the car is used on the road 90% of the time. I guess most people are used to the start of the useable rev range being around 3200/3500rpm.

If you're happy screaming the engine to get boost, then that's fine too. As you said, if that's the way you drive (VTEC's for example), then you'll be used to having to do that.

Personally, I love the thought of having the best of both worlds. A car that pulls hard and strong from low down, making decent boost by 3500, and holds it all the way to the 8k limiter. :twisted:

EarL.
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Century Motorsport »

Well put JJ - also i do agree with you Earl....

The thing that puts the smile on my face everytime is when the turbo spools up because it comes in with such aggresion! Its like you just hit the warp 9 button and are about to take off into another galaxy!

Although i have never been in a high powered mr2 with a quick spooling turbo i can hazard a guess that the 'kick' you would get wouldnt be a bigger one as say my setup. For instance - if you got average joe off the road and put him in a 500hp mr2 that spools up at 5k and revs to 8.5k then took him out and put him in another 500hp mr2 but the turbo on this one spooled up at 3.5k and revved to 7.4k the average joe would say the laggier car is the quicker every time due to the way the power is delivered when in a straight drag race there wouldnt be any difference (as long as launch control was used to get the turbo up to speed!!!)

Everyone wants something different out of their engine - thats what makes forums like this so interesting!!

Anyhow....... i have already started more plans #-o

Just brought another block and head to which im going to get sleeved and bigger valves fitted with a nice port job..... then its time for a stroker kit me thinks and run the turbo to 2bar and get 600+ [-o< [-o< [-o< lol

Watch this space......
Builders of the the UK's first 9second MR2 - 9.722 @ 148 MPH ----- 07947883103 ---- www.centurymotorsport.com
michael
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by michael »

Impressive numbers, I guess it's almost as quick as an NA up to 5000rpm - you must be thrilled.
JJ
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by JJ »

Anyhow....... i have already started more plans


You've got problems !! :mrgreen: I have a good contact number if you're interested !! :D
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
JJ
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by JJ »

Impressive numbers, I guess it's almost as quick as an NA up to 5000rpm - you must be thrilled.


Michael... you need to edit that to read :

Impressive numbers, I guess it's almost as slow as an NA up to 5000rpm, and quicker than a Supra above - you must be thrilled.

:mrgreen:

\:D/
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
EarL
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by EarL »

michael wrote:Impressive numbers, I guess it's almost as quick as an NA up to 5000rpm - you must be thrilled.

:lol: :-$
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Century Motorsport »

JJ wrote:
Impressive numbers, I guess it's almost as quick as an NA up to 5000rpm - you must be thrilled.


Michael... you need to edit that to read :

Impressive numbers, I guess it's almost as slow as an NA up to 5000rpm, and quicker than a Supra above - you must be thrilled.

:mrgreen:

\:D/


Well said JJ. And michael i am thrilled.... thanks!
Builders of the the UK's first 9second MR2 - 9.722 @ 148 MPH ----- 07947883103 ---- www.centurymotorsport.com
michael
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by michael »

I'll settle for....

JJ wrote:
Impressive numbers, I guess it's almost as slow as an NA up to 5000rpm, and quicker than a standard Supra above - you must be thrilled.
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Century Motorsport »

Are you taking the p1$$?

Where's your monster then? 500hp is 500hp like it or not the proof is in the pudding - sarky comments like that are what sparks arguments off on this board and no one likes that.

Anyway, whats so bad about my setup that you feel the need to be-little it?

Got out of bed the wrong side today??
Builders of the the UK's first 9second MR2 - 9.722 @ 148 MPH ----- 07947883103 ---- www.centurymotorsport.com
michael
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by michael »

nathanfreke wrote:Are you taking the p1$$?
.

Slightly

Where's your monster then?


It's just cooling down on the driveway, the 1.4 TDCi tends to put a lot of demands on things due to all the low down torque ;)

500hp is 500hp like it or not the proof is in the pudding


Agreed, the end result is a spectacular number and something of an achievement when presented in an MR2 package, it just takes the edge off things when the area under the graph is similar to that of well fettled CT20 hybrid until 7000rpm.

sarky comments like that are what sparks arguments off on this board and no one likes that.


Some people enjoy it ;)

Anyway, whats so bad about my setup that you feel the need to be-little it?


It depends on what your goal was / is, pub bragging rights, a display of antique technology, 1/2 mile drag monster (will it spool by the end of a 1/4?) or a quick track car - I know it's going to be rapid when it's on the boil but please excuse me if I don't join in with the rest of the people who want to kiss your ass as a result of some dyno numbers ;)

Got out of bed the wrong side today??


I left down the middle as it happens, I guess it could go either way.

O:)
Andy F
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Re: A perfect day @ Perfect touch..now with dyno + pics

Post by Andy F »

7 pages of ass licking, then you get 1 person who doesn't , and your sulking and calling him names, get over it and get your quarter mile time in :|
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