Originally Posted by joz8968 (Post 9204102)

Clive - can you explain to us what 600+ feels like on the road? I take it you do actually give it the occasional beans on the road? lol How much space do you have to give yourself on the road, etc.?

(I suppose it'll be impossible for us to appreciate as we have no reference...)

Originally Posted by ZEN Performance (Post 9203936)

Yes it does spool slightly differently, but it's sometimes hard to know what is time related and what is RPM related. The runs were pretty quick to flash through so representative of the car in say 3rd-4th gear on the road.

Turbos are funny things, and the same thing that allows the turbo to make more power at the same boost may be the very same thing that causes slightly slower spool IN SOME CIRCUMSTANCES. It was also clear when mapping the car for the new turbo, that it totally changed the fueling right from low down, and I suspect that any small changes in spool would be more than made up for in a improved power and response on and off the throttle around atmospheric pressure.

It's important to realise that the billet wheels are not just a billet copy of the original, made sightly lighter, but a totally different shape of wheel that reacts in a different matter. And also although they are both GT35 based turbos, Clive's original turbo is one of the very earliest GT35s that ever was, in fact it's 0.82 A/R ex housing was the first ever made (modified from a 0.82 A/R GT30 housing) so it is possible that there are slight changes in the housing, or a build up of scale or maybe the new turbo will loosen up a little with further use.

Todays result are pretty clear i think, we went to some lengths to ensure the test was as fair and "back to back" as possible, and the differences are clear to see at high boost, but also there were similar gains at 1.5 bar and 1.8 bar.

Overall I think it's a cracking turbo, it's so obviously different when you come to map it, and I suspect on some (Subaru) cars it will go on to make more power again, 650+ should be in reach.

Many thanks to Kev and his team at Scoobyclinic for their hospitality today.

Paul

Originally Posted by The Gaffer (Post 9204547)

...The SC46 billet's are still on their way as soon as they arrive we will put them to the test :thumb:...

Originally Posted by The Gaffer (Post 9205374)

Hi,

now testing is nearly over its time to add some costings to these billet turbo's.

We are constantly trying to give value for money and have finally got some retail prices to offer, some may have gone up a little and some have come down considerably :thumb:..........


DIRECT FIT BOLT ON BILLET TURBO RANGE........

SC46 Billet...........£1295.00
SC50 billet...........£1350.00
SC54 billet...........£1425.00

ROTATED BILLET TURBO RANGE..............

GT30 Billet...........£1125.00
GT33 billet...........£1250.00
GT35 billet...........£1195.00

All the rotated turbo's come with ported shroud and are available with either .63 or .82 a/r exhaust housings.

We also offer a Tial housing version at no extra cost, clamp and flange kit is extra at £125.00.

The above are retail prices, trade enquiries welcome ;)

all prices + vat @ 17.5%

Cheers
Kev

Originally Posted by The Gaffer (Post 9204547)

Hi,

One thing we did notice is our dyno has been occasionally holding back this last week, it appears on the printout as slightly slow spool, we have just run a WR1 this morning and noticed this problem, spool 200/300 rpm later than the next run, maybe we have a dyno glitch to sort, will keep an eye on it over the next few days.


Kev

Originally Posted by MartynJ (Post 9205754)

Hi Kev, not trying to teach Granny to suck eggs, but we had this recently and found that one of our staff had inadvertantly turned off the smart mode on the hard drive during the boot up procedure. This caused the dyno to pause briefly after flicking the ramp switch to look where to put the dyno file, before allowing the run to continue.

Nice figures BTW all !

Martyn

Originally Posted by The Gaffer (Post 9206434)

Hi,
thanks for that, all input welcome, you can actually see it as a little blip around 3300 RPM on the blue trace, Mike from the newly re-formed Dyno Dynamics is up Wed to give the dyno a once over I will check out your suggestion before then,. once again thankyou :thumb:

Cheers
Kev

Originally Posted by joz8968 (Post 9214755)

"New turbo" threads are the best! - makes for compelling reading. :thumb:

Originally Posted by The Gaffer (Post 9216126)

Hi,
the next test is on an ex Time Attack car fitted with a GT35R on a 2.0ltr CDB, customer complains of lag, no surprise there, so we are to go with a GT 30 billet, results to follow :thumb:

Cheers
Kev

Originally Posted by The Gaffer (Post 9216126)

Apparently the delay was due to the machine occasionally having to look for the front roller data longer than it should.

Huge thanks to Mike from Dyno Dynamics for sorting it :notworthy

Originally Posted by dynamix (Post 9216448)

How would this affect the dyno results Kev ?

Originally Posted by The Gaffer (Post 9231065)

...however car has issues with its rotated pipework, this became apparent when we sripped off the GT35, its a mess and most likely contributing to the poor spool. :(...