Turbos for around 400,450,500
18 June 2007, 01:22 PM
#1
Turbos for around 400,450,500
OK, with all the new Turbo's around now it would be good to get a good list together of views and performance (spool up, top end etc)
Maybe if we could break it down into power groups.
Around 400bhp
Td05 18g,
Td05 20g
MD321h,
ScoobyClinic SC42,
What others??
Around 450 bhp
Around 500 bhp
Maybe if we could break it down into power groups.
Around 400bhp
Td05 18g,
Td05 20g
MD321h,
ScoobyClinic SC42,
What others??
Around 450 bhp
Around 500 bhp
18 June 2007, 02:57 PM
#3
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TD05 16g turbo. Good for up to 360/370. Is this true? About to veiw a type r with this turbo with it? Whats the std turbo on a 97 v4 impreza type r?
(Sorry to hijack the post)
Thanx in advance
(Sorry to hijack the post)
Thanx in advance
18 June 2007, 03:48 PM
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I've not heard of many Dccd gearboxes going wrong???
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18 June 2007, 04:23 PM
#12
A number of turbo's are either available or being developed by a number of companies. That's all good news to the consumer! 
500BHP
Currently working with AET Turbos and have a turbo fitted at the moment which makes 480+bhp at 1.38bar (boost at peak power) on pump fuel on PowerStations RR (was also ran on a hub dyno last week and got 400bhp at the hubs!). Turbo is standard position, direct bolt on replacement (single scroll). Problem with current actuator not being strong enough (hence low boost). 1bar @ circa 2800rpm 1.6 @ 3000rpm. Engine is a complete Cosworth 2.5L. On this 2.5L, the turbo provides the same response and driveability lowdown as my previous 2L twin scroll engine had.
Based on current findigs this turbo will easily make 500bhp with slightly more boost. Plenty more to come from this type of standard fit turbo and I will be having another version to try in a couple of weeks.
500BHP
Currently working with AET Turbos and have a turbo fitted at the moment which makes 480+bhp at 1.38bar (boost at peak power) on pump fuel on PowerStations RR (was also ran on a hub dyno last week and got 400bhp at the hubs!). Turbo is standard position, direct bolt on replacement (single scroll). Problem with current actuator not being strong enough (hence low boost). 1bar @ circa 2800rpm 1.6 @ 3000rpm. Engine is a complete Cosworth 2.5L. On this 2.5L, the turbo provides the same response and driveability lowdown as my previous 2L twin scroll engine had.
Based on current findigs this turbo will easily make 500bhp with slightly more boost. Plenty more to come from this type of standard fit turbo and I will be having another version to try in a couple of weeks.
18 June 2007, 04:36 PM
#13
webby i see you have ditched the 2ltr block :90 i did the same and went with a 2.5ltr closed deck block 
i think the new MD range of turbo's are some of the best £ for £ turbos around! if i had not of went rotated i would of fitted one of those myself
i think the new MD range of turbo's are some of the best £ for £ turbos around! if i had not of went rotated i would of fitted one of those myself
18 June 2007, 06:33 PM
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Sounds like an awesome turbo. Standard fit as well - bonus.
A number of turbo's are either available or being developed by a number of companies. That's all good news to the consumer!
500BHP
Currently working with AET Turbos and have a turbo fitted at the moment which makes 480+bhp at 1.38bar (boost at peak power) on pump fuel on PowerStations RR (was also ran on a hub dyno last week and got 400bhp at the hubs!). Turbo is standard position, direct bolt on replacement (single scroll). Problem with current actuator not being strong enough (hence low boost). 1bar @ circa 2800rpm 1.6 @ 3000rpm. Engine is a complete Cosworth 2.5L. On this 2.5L, the turbo provides the same response and driveability lowdown as my previous 2L twin scroll engine had.
Based on current findigs this turbo will easily make 500bhp with slightly more boost. Plenty more to come from this type of standard fit turbo and I will be having another version to try in a couple of weeks.
500BHP
Currently working with AET Turbos and have a turbo fitted at the moment which makes 480+bhp at 1.38bar (boost at peak power) on pump fuel on PowerStations RR (was also ran on a hub dyno last week and got 400bhp at the hubs!). Turbo is standard position, direct bolt on replacement (single scroll). Problem with current actuator not being strong enough (hence low boost). 1bar @ circa 2800rpm 1.6 @ 3000rpm. Engine is a complete Cosworth 2.5L. On this 2.5L, the turbo provides the same response and driveability lowdown as my previous 2L twin scroll engine had.
Based on current findigs this turbo will easily make 500bhp with slightly more boost. Plenty more to come from this type of standard fit turbo and I will be having another version to try in a couple of weeks.
18 June 2007, 06:51 PM
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Go and take a look at Owen developments website, they do direct replacement Garrett (roller bearing) turbos, for 425+ and 475+. Been looking at the 425+ one and theyr'e looking for 1275+vat. Owen Developments - turbochargers, performance tuning and innovative engineering solutions
18 June 2007, 07:14 PM
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19 June 2007, 01:31 PM
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Shaun,
You really must include the spec' of your heads, when stating figures
VVT heads can easily be worth 400-500rpm earlier spool up, over none VVT heads, and people need to take this into account when making comparisons.
I think this is a great idea.
However, due to various circumstances, it's possible for results to get a little skewed, and be very mis-leading.
So I think it would be worth basing the power rating of a turbo, on more than just one result, and certainly based on figures from more than just one rolling road, so people can see an overall picture of a turbos performance.
Mark.
You really must include the spec' of your heads, when stating figures
VVT heads can easily be worth 400-500rpm earlier spool up, over none VVT heads, and people need to take this into account when making comparisons.
I think this is a great idea.
However, due to various circumstances, it's possible for results to get a little skewed, and be very mis-leading.
So I think it would be worth basing the power rating of a turbo, on more than just one result, and certainly based on figures from more than just one rolling road, so people can see an overall picture of a turbos performance.
Mark.
19 June 2007, 01:58 PM
#22
Mark,
All details about my engine will be revealed in an up and coming article. But yes... the spec is far from a normal 2.5L build.
I agree whole heartedly about the comparisons and have ran the current spec on different types of dyno's.
A lot of work from turbo builders seems to be happening as of late (of course yourself included) so us the consumer have never had it so good, which is hats off to all you guys involved.
All details about my engine will be revealed in an up and coming article. But yes... the spec is far from a normal 2.5L build.
I agree whole heartedly about the comparisons and have ran the current spec on different types of dyno's.
A lot of work from turbo builders seems to be happening as of late (of course yourself included) so us the consumer have never had it so good, which is hats off to all you guys involved.
19 June 2007, 03:10 PM
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Shaun,
I understand that you want to keep certain details quiet, until the article, but it's a good example of figures getting unintentionally distorted.
Mark.
I understand that you want to keep certain details quiet, until the article, but it's a good example of figures getting unintentionally distorted.
Mark.
19 June 2007, 08:14 PM
#25
One to add,
APS SR55, APS state that it has flow capacity to produce 500 hp at 14.5 psi and 550 hp at 22 psi.
I have this fitted along with the WRC Technologies WRC 400 kit by and it is averaging around 415, can't take it any higher though until I have a little bit of work done to the internals
APS SR55, APS state that it has flow capacity to produce 500 hp at 14.5 psi and 550 hp at 22 psi.
I have this fitted along with the WRC Technologies WRC 400 kit by and it is averaging around 415, can't take it any higher though until I have a little bit of work done to the internals
20 June 2007, 07:17 PM
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As staffi mentioned above 2bar is quite possible. Mine is running around 1.8 bar but I have heard of many others running higher than that. Mark (Lateral) can comment on the limits but I believe - anyone want to confirm/deny?? - they can go all the way up to 3bar (though I dont know if there is some sort of scenario where you begin to experience diminishing returns).
Cheers
21 June 2007, 07:59 AM
#28
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The P18 is proven on a good few cars at around 400-410 BHP Standard bottom end @1.4-1.5 ish bar), and the P20 on Bob Rawles STI5 and Chris Bucklers WR1 at around 490 (built engine 1.8-1.9 ish bar)
I believe on Rich's WRX engine the P18 gives 380-390 at slightly less boost than i and others are running with STI pistons.
RCM have just released another turbo that should perform similiar to the P18 but spool significantly earlier. I will be doing a conversion on a WR1 soon using one of these and it will be interesting to compare it to marks MD321H and the new SC turbo.
I believe on Rich's WRX engine the P18 gives 380-390 at slightly less boost than i and others are running with STI pistons.
RCM have just released another turbo that should perform similiar to the P18 but spool significantly earlier. I will be doing a conversion on a WR1 soon using one of these and it will be interesting to compare it to marks MD321H and the new SC turbo.
21 June 2007, 09:40 PM
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hope this helps.