scoobyclinics turbo's just got billet I mean better!
sorry.
29 January 2010, 12:15 AM
#182
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; 29 January 2010 at 06:41 PM.
29 January 2010, 05:35 PM
#183
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never mind pop up to suit.
29 January 2010, 05:58 PM
#184
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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.
02 February 2010, 06:13 PM
#188
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Subscribed . Watching this one with interest.
GT33 XT-R Billet sounds interesting, I guessing its a GT30 hybrid of some kind?
Dave
. Watching this one with interest.GT33 XT-R Billet sounds interesting, I guessing its a GT30 hybrid of some kind?
Dave
04 February 2010, 05:31 PM
#190
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Hi,
GT35 verses GT35 billet
GT35 verses GT35 billet @2.2 bar
Result
Thanks to Paul from Zen and Clive for putting his car at risk.
Cheers
Kev
GT35 verses GT35 billet
GT35 verses GT35 billet @2.2 bar
Result
Thanks to Paul from Zen and Clive for putting his car at risk.
Cheers
Kev
04 February 2010, 05:49 PM
#191
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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
04 February 2010, 06:42 PM
#193
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.
04 February 2010, 06:58 PM
#196
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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).
04 February 2010, 06:58 PM
#197
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?).
04 February 2010, 09:28 PM
#202
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.
04 February 2010, 09:34 PM
#203
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.
04 February 2010, 09:53 PM
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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.
04 February 2010, 11:01 PM
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04 February 2010, 11:13 PM
#210
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; 04 February 2010 at 11:15 PM.