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2.2 JTS
Where has the JTS option gone on the 159?? alfa romeo website car
configurator offers the 1750 tb as the only petrol option now! I would have thought that the 2.2 JTS would be much torquier and relaxed drive than the 1750 turbo and similar BHPs. When did this happen and why wasn't I informed!! |
#2
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2.2 JTS
GT > wrote:
> Where has the JTS option gone on the 159?? alfa romeo website car > configurator offers the 1750 tb as the only petrol option now! > > I would have thought that the 2.2 JTS would be much torquier and relaxed > drive than the 1750 turbo and similar BHPs. > > When did this happen and why wasn't I informed!! The JTS engines were co-developed with GM and are largely regarded as 'not very good'. Having had a 1.8 turbo (in a Passat), I'd say you need to try one - you get lots more torque and a much more relaxed drive from a modern turbo than you used to get from 1980s laggy monsters. -- SteveH |
#3
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2.2 JTS
"SteveH" > wrote in message
. .. > GT > wrote: > >> Where has the JTS option gone on the 159?? alfa romeo website car >> configurator offers the 1750 tb as the only petrol option now! >> >> I would have thought that the 2.2 JTS would be much torquier and relaxed >> drive than the 1750 turbo and similar BHPs. >> >> When did this happen and why wasn't I informed!! > > The JTS engines were co-developed with GM and are largely regarded as > 'not very good'. > > Having had a 1.8 turbo (in a Passat), I'd say you need to try one - you > get lots more torque and a much more relaxed drive from a modern turbo > than you used to get from 1980s laggy monsters. Just been reading about it - you're right - sounds like a different beast altogether. BHP figures: 2.2JTS - 182bhp 3.2JTS - 256bhp 1750tb - 200bhp Torque figures are very interesting: 2.2JTS - 230Nm @ 4500rpm 3.2JTS - 322Nm @ 3800rpm 1750tb - 320Nm. @ 1400rpm (how so low revs??) Does the turbo work at a low revs then? I wasn't aware that such a thing existed - I thought they needed decent exhaust gas pressure (higher revs) to work? |
#4
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2.2 JTS
GT wrote:
> "SteveH" > wrote in message > . .. >> GT > wrote: >> >>> Where has the JTS option gone on the 159?? alfa romeo website car >>> configurator offers the 1750 tb as the only petrol option now! >>> >>> I would have thought that the 2.2 JTS would be much torquier and relaxed >>> drive than the 1750 turbo and similar BHPs. >>> >>> When did this happen and why wasn't I informed!! >> The JTS engines were co-developed with GM and are largely regarded as >> 'not very good'. >> >> Having had a 1.8 turbo (in a Passat), I'd say you need to try one - you >> get lots more torque and a much more relaxed drive from a modern turbo >> than you used to get from 1980s laggy monsters. > > Just been reading about it - you're right - sounds like a different beast > altogether. BHP figures: > 2.2JTS - 182bhp > 3.2JTS - 256bhp > 1750tb - 200bhp > > Torque figures are very interesting: > 2.2JTS - 230Nm @ 4500rpm > 3.2JTS - 322Nm @ 3800rpm > 1750tb - 320Nm. @ 1400rpm (how so low revs??) > > Does the turbo work at a low revs then? I wasn't aware that such a thing > existed - I thought they needed decent exhaust gas pressure (higher revs) to > work? > > I *think* that looks like a misprint. Have you got more than one source? I mean, it depends on how heavy your turbo is, but you'd certainly expect more torque higher up the range than that. -- Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 Tyger, Tyger Burning Bright (Remove rust to reply) 116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6 Triumph Sprint ST 1050: It's blue, see. www.cuore-sportivo.co.uk |
#5
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2.2 JTS
Catman > wrote:
> > Does the turbo work at a low revs then? I wasn't aware that such a thing > > existed - I thought they needed decent exhaust gas pressure (higher revs) to > > work? > > > > > I *think* that looks like a misprint. Have you got more than one source? > > I mean, it depends on how heavy your turbo is, but you'd certainly > expect more torque higher up the range than that. That'll be right - the VW 1.8T engine produced peak torque from similar revs - allegedly, they continue to produce this peak figure through most of the rev. range. Certainly feels like it, anyway. Almost like a TDI that revs. -- SteveH |
#6
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2.2 JTS
SteveH wrote:
> Catman > wrote: > >>> Does the turbo work at a low revs then? I wasn't aware that such a thing >>> existed - I thought they needed decent exhaust gas pressure (higher revs) to >>> work? >>> >>> >> I *think* that looks like a misprint. Have you got more than one source? >> >> I mean, it depends on how heavy your turbo is, but you'd certainly >> expect more torque higher up the range than that. > > That'll be right - the VW 1.8T engine produced peak torque from similar > revs - allegedly, they continue to produce this peak figure through most > of the rev. range. Certainly feels like it, anyway. Almost like a TDI > that revs. Blimey. I wonder how the turbo can be even barely spinning at that kind of speed. It would give a pretty much linear pwoer curve up the rev range though. -- Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 Tyger, Tyger Burning Bright (Remove rust to reply) 116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6 Triumph Sprint ST 1050: It's blue, see. www.cuore-sportivo.co.uk |
#7
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2.2 JTS
"Catman" > wrote in message ... > I *think* that looks like a misprint. Have you got more than one source? > > I mean, it depends on how heavy your turbo is, but you'd certainly expect > more torque higher up the range than that. > Not a misprint... It uses "scavenging technology" apparently? Something to do with opening the exhaust valves earlier at low rpm so the combustion helps spin the turbo with more vigour. The Giulietta QV has 340Nm (and 235BHP) at a slightly higher 1900rpm. Apparently it has the highest torque per cubic capacity of any production car at present. -- Ivan. Alfa GT Ex 156 2.5 V6 Veloce Ex 156 Selespeed (RIP 22 May 03) Ex 145 QV Ex 33 16v QV Ex 33 QV series 1 __________ Information from ESET NOD32 Antivirus, version of virus signature database 5477 (20100924) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com |
#8
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2.2 JTS
Ivan wrote:
> "Catman" > wrote in message > ... >> I *think* that looks like a misprint. Have you got more than one source? >> >> I mean, it depends on how heavy your turbo is, but you'd certainly expect >> more torque higher up the range than that. >> > > Not a misprint... It uses "scavenging technology" apparently? Something to > do with opening the exhaust valves earlier at low rpm so the combustion > helps spin the turbo with more vigour. That will lose power though. It's all too complex for me. > The Giulietta QV has 340Nm (and 235BHP) at a slightly higher 1900rpm. > Apparently it has the highest torque per cubic capacity of any production > car at present. > Cool. Glad they still do something right. -- Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 Tyger, Tyger Burning Bright (Remove rust to reply) 116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6 Triumph Sprint ST 1050: It's blue, see. www.cuore-sportivo.co.uk |
#9
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2.2 JTS
"Catman" > wrote in message
... > GT wrote: >> "SteveH" > wrote in message >> . .. >>> GT > wrote: >>> >>>> Where has the JTS option gone on the 159?? alfa romeo website car >>>> configurator offers the 1750 tb as the only petrol option now! >>>> >>>> I would have thought that the 2.2 JTS would be much torquier and >>>> relaxed >>>> drive than the 1750 turbo and similar BHPs. >>>> >>>> When did this happen and why wasn't I informed!! >>> The JTS engines were co-developed with GM and are largely regarded as >>> 'not very good'. >>> >>> Having had a 1.8 turbo (in a Passat), I'd say you need to try one - you >>> get lots more torque and a much more relaxed drive from a modern turbo >>> than you used to get from 1980s laggy monsters. >> >> Just been reading about it - you're right - sounds like a different beast >> altogether. BHP figures: >> 2.2JTS - 182bhp >> 3.2JTS - 256bhp >> 1750tb - 200bhp >> >> Torque figures are very interesting: >> 2.2JTS - 230Nm @ 4500rpm >> 3.2JTS - 322Nm @ 3800rpm >> 1750tb - 320Nm. @ 1400rpm (how so low revs??) >> >> Does the turbo work at a low revs then? I wasn't aware that such a thing >> existed - I thought they needed decent exhaust gas pressure (higher revs) >> to work? >> >> > I *think* that looks like a misprint. Have you got more than one source? I took the 1750 above from the Alfa-Romeo.co.uk site. The JTS info came from Wiki p didi. |
#10
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2.2 JTS
GT wrote:
> Where has the JTS option gone on the 159?? alfa romeo website car > configurator offers the 1750 tb as the only petrol option now! > > I would have thought that the 2.2 JTS would be much torquier and relaxed > drive than the 1750 turbo and similar BHPs. > > When did this happen and why wasn't I informed!! > > Didn't you sell out? -- Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 Tyger, Tyger Burning Bright (Remove rust to reply) 116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6 Triumph Sprint ST 1050: It's blue, see. www.cuore-sportivo.co.uk |
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