scoobyclinics turbo's just got billet I mean better!
sorry.
Hi,
I was going to mention that
The spool on the billet 46 will hopefully be better than the SC42 with a much higher top end than the standard SC46, if this is the case we will cease to do the SC42
The SC46 runs a 46 llb wheel, hence its name, the billet one will run a 49 llb wheel but the wheel will be 33% lighter therefore spool should be improved along with top end performance, win win we hope.
Hope that kind of answers your questions
cheers
Kev
I was going to mention that
The spool on the billet 46 will hopefully be better than the SC42 with a much higher top end than the standard SC46, if this is the case we will cease to do the SC42
The SC46 runs a 46 llb wheel, hence its name, the billet one will run a 49 llb wheel but the wheel will be 33% lighter therefore spool should be improved along with top end performance, win win we hope.
Hope that kind of answers your questions
cheers
Kev
Am rubbing my hands vigourously (like a mental patient
) in anticipation on the SC46 XTR results... 
Last edited by joz8968; Jan 29, 2010 at 06:41 PM.
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From: www.scoobyclinic.com
never mind pop up to suit.
Kev ill be booking in for a map tweak sometime soon well prob gonna be 6 weeks or so.
If my gt35 is the smaller .63 housing ill defo be going for that new billet 35 with the .82 housing,should be similar spool and loads more power.
See you soon.
If my gt35 is the smaller .63 housing ill defo be going for that new billet 35 with the .82 housing,should be similar spool and loads more power
.See you soon.
Got the car ready yesterday for the trip up north on Thursday for the 35R billet testing. On with a set of road wheels and tyres ready for the dyno
Last edited by Mad Hammer; Feb 1, 2010 at 01:04 PM.
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From: www.scoobyclinic.com
Hi,
to make it a bit clearer the base run on the standard 35R came in at 578.9 flywheel bhp.
Turbo swapped, map tweaked to suit and 603.6 bhp appeared at exactly the same boost.
Decision made to up the boost to 2.2 bar gave 622.3 BHP
Good result we think.
Thanks to everyone for their interest in this thread.
Cheers
Kev
to make it a bit clearer the base run on the standard 35R came in at 578.9 flywheel bhp.
Turbo swapped, map tweaked to suit and 603.6 bhp appeared at exactly the same boost.
Decision made to up the boost to 2.2 bar gave 622.3 BHP
Good result we think.
Thanks to everyone for their interest in this thread.
Cheers
Kev
I can see the billet turbo does well, just wondering why it seems to be slower to spool in both graphs, when it has a lighter wheel? Is there an explanation, or is it just a fluke? Definitely bigger area under curve at same boost, but surprisingly slightly slower spool up, say 200 rpm slower to make 12 psi.
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From: 5 beats 4 - RS3 Rulez!!!
Kev,
Impressive mid and top-end increases, bar the slightly slower spool to 4.5k. Well done!
I wonder how this type of turbo would perform on a high comp. 2.5ltr with Cossie Heads and CAMS (putting the latter two to some good use).
Impressive mid and top-end increases, bar the slightly slower spool to 4.5k. Well done!
I wonder how this type of turbo would perform on a high comp. 2.5ltr with Cossie Heads and CAMS (putting the latter two to some good use).
Any further news for the run with the SC46 XTR billet?
Fab results for the GT35 billet BTW - but would also like an explaination for the slightly slower spool, bearing in mind the impeller is significantly lighter (is it 33% lighter too?).
Fab results for the GT35 billet BTW - but would also like an explaination for the slightly slower spool, bearing in mind the impeller is significantly lighter (is it 33% lighter too?).
As for the turbo I am really pleased, great result. Must says thanks to all involved at the Clinic and to Paul for taking a whole day out to travel up north with us to map the car. Thanks also to everyone else who came along to witness the event.
I have some pics etc too, will get them up soon.
Fuel was V-Power + 20% Meth
Turbo size is the same 0.82A/R
I can't explain spool but not an issue for me, this is after all a race can not road car. I would not want to be using this sort of power on the road tbh.
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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
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
I can see the billet turbo does well, just wondering why it seems to be slower to spool in both graphs, when it has a lighter wheel? Is there an explanation, or is it just a fluke? Definitely bigger area under curve at same boost, but surprisingly slightly slower spool up, say 200 rpm slower to make 12 psi.
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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...)
(I suppose it'll be impossible for us to appreciate as we have no reference...)
Last edited by joz8968; Feb 4, 2010 at 11:15 PM.