Fuel Economy
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| Tom_Martin |  | ... | 26-03-2010 @ 21:57 |
 No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | Rick said:Since my car's got a turbo the torque curve is flatter than you'd think for a high specific output engine, though it's obviously a lot faster up the rev range. The difference from half throttle to full is fairly pronounced. I do track my mpg, largely because if it suddenly starts to alter for no apparent reason it could be an early warning of engine problems. However, it does tell me that the difference on similar journeys from driving deliberately slowly to driving however the hell I want is less than 10%; for under £3 a week I'll have fun, thanks. This is the opposite of what I find with turbo's! My torque peaks at 303 lb/ft at 5k rpm, and is DISMAL below 3k rpm. at 2k rpm (this is sensible rpm right?) torque is around 140 lb/ft... | ||
| lil_lee | | ... | 26-03-2010 @ 21:57 |
anti-social, except when needs help to put suit on Member 607, 2803 posts | tom you legend! we must talk turbo's next time i see you and not cgbp! | ||
| Tom_Martin | | ... | 26-03-2010 @ 22:02 |
No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | lil_lee said:tom you legend! we must talk turbo's next time i see you and not cgbp! The most legendary decision I ever made was perhaps choosing it over an Imprezza or Evo! What turbo fun do you partake in mate? | ||
| richards9876 | | ... | 26-03-2010 @ 22:05 |
 Still mostly bodybuilding Member 501, 10465 posts SQ 220, BP 150, DL 250620.0 kgs @ 94kgs UnEq | Post Edited: 26.03.2010 @ 22:05 PM by richards9876 Thinking of treating myself to an Evo 8 MR 340 next year in Gunmetal Grey.£1200 will get it to 400bhp/ 400lb torque and a huge smile on your face.  | ||
| Rick | | ... | 26-03-2010 @ 22:08 |
 I am a bench-only guy Member 3, 10035 posts SQ 185, BP 175, DL 235595.0 kgs @ 140kgs UnEq Administrator | Tom_Martin said: This is the opposite of what I find with turbo's! My torque peaks at 303 lb/ft at 5k rpm, and is DISMAL below 3k rpm. at 2k rpm (this is sensible rpm right?) torque is around 140 lb/ft... The standard roadster has a pretty flat torque curve from about 2.5 to 5 or so. Feels torquier with the map I have on it, but I don't have figures for that. (Mind you mine's making less at peak than yours is at "dismal"  .) | ||
| lil_lee | | ... | 26-03-2010 @ 22:09 |
anti-social, except when needs help to put suit on Member 607, 2803 posts | iv jus finished uni so now in full time work i pick up my ibiza cupra next sat.. completly standard! im lookin at maybe s3 turbo and bit to make 280ish or ihi turbo of a scooby and look at 330ish | ||
| Tom_Martin | | ... | 26-03-2010 @ 22:12 |
No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | richards9876 said:Thinking of treating myself to an Evo 8 MR 340 next year in Gunmetal Grey. £1200 will get it to 400bhp/ 400lb torque and a huge smile on your face. I'd imagine 400 lb would see you quite a bit over 400bhp in an evo. They need to be revved pretty hard do they not? 300lb at 5k gets me 330bhp at 6.5k, I can imagine an evo peaking a bit higher up the revs than that especially once you start messing around with it. | ||
| General_ill | | ... | 26-03-2010 @ 22:12 |
 3rd place Europes strongest man 2016 U90kg Member 1239, 13275 posts SQ 280, BP 155, DL 310745.0 kgs @ 89kgs UnEq | richards9876 said:Thinking of treating myself to an Evo 8 MR 340 next year in Gunmetal Grey. £1200 will get it to 400bhp/ 400lb torque and a huge smile on your face. deffo worth it a mate of mine had an evo 7 modded by rc developments in Warrington was an animal and rc are the evo dons. Same lad Also had a gt4 WRC which blew up. Nice car tho. I currenty have a transporter T4 diesel. And a nice new house still miss the m3 tho | ||
| Tom_Martin | | ... | 26-03-2010 @ 22:16 |
No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | Rick said: The standard roadster has a pretty flat torque curve from about 2.5 to 5 or so. Feels torquier with the map I have on it, but I don't have figures for that. (Mind you mine's making less at peak than yours is at "dismal" .)What car is it Rick? How many psi is it running at? This usually tells pretty much the whole story, if it's a low pressure turbo it'll be a lot less laggy than mine most likely. Dismal meant only in terms of how laggy it is Rick! It's still plenty enough to get around town with, which is why I don't care about the lag. If I'm driving it properly the lag doesn't matter, and if I'm not, off boost is perfectly fine for getting about with. | ||
| Tom_Martin | | ... | 26-03-2010 @ 22:21 |
No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | General_ill said: deffo worth it a mate of mine had an evo 7 modded by rc developments in Warrington was an animal and rc are the evo dons. Same lad Also had a gt4 WRC which blew up. Nice car tho. I currenty have a transporter T4 diesel. And a nice new house still miss the m3 tho GT4 ringlands are unfortunately a problem for a lot of GT4 owners. I'd bet large sums of money that's what problem he had. Options are go forged, stick a new short block assembly from Toyota on it every time it happens or settle for 300bhp and be done with it. I went for a new engine as I've known many forged rebuilds fail before 10k, they burn a lot of oil, it's my daily driver and ultimately are more expensive than replacing the short block when needed. | ||
| Rick | | ... | 26-03-2010 @ 22:22 |
I am a bench-only guy Member 3, 10035 posts SQ 185, BP 175, DL 235595.0 kgs @ 140kgs UnEq Administrator | Mine's also boosting to 20psi, as it happens (when called upon to do so) - but it's obviously a much smaller turbo, so while there's a little lag from off boost to on it's really not a major issue. Car on the last run out on its winter wheels, last week: http://farm3.static.flickr.com/2688/4451153687_2a15613c05.jpg | ||
| brynevans | | ... | 26-03-2010 @ 22:23 |
 Scotbasher - forever Member 59, 2115 posts | I've been running a Toyota Prius courtesy car whilst mines in the bodyshop(someone hit the back of me). According to the trip computer it's done 42mpg which has been mostly mixed urban driving, as much as I wanted to hate it I've quite enjoyed it for the general day to day running about and have got quite used to not having to change gear too. The transition between being on the electric motor and the regular engine is imperceptible. | ||
| General_ill | | ... | 26-03-2010 @ 22:26 |
3rd place Europes strongest man 2016 U90kg Member 1239, 13275 posts SQ 280, BP 155, DL 310745.0 kgs @ 89kgs UnEq | Tom_Martin said: GT4 ringlands are unfortunately a problem for a lot of GT4 owners. I'd bet large sums of money that's what problem he had. Options are go forged, stick a new short block assembly from Toyota on it every time it happens or settle for 300bhp and be done with it. I went for a new engine as I've known many forged rebuilds fail before 10k, they burn a lot of oil, it's my daily driver and ultimately are more expensive than replacing the short block when needed. we took it to Santa pod a few times and it ran high 13's from what I can remember was perfect until he was taking it to trade it in and it just died on the way.  | ||
| Tom_Martin | | ... | 26-03-2010 @ 22:31 |
No one believed him anyway. Member 958, 11411 posts SQ 410, BP 215, DL 4251050.0 kgs @ 100kgs UnEq | brynevans said:I've been running a Toyota Prius courtesy car whilst mines in the bodyshop(someone hit the back of me). According to the trip computer it's done 42mpg which has been mostly mixed urban driving, as much as I wanted to hate it I've quite enjoyed it for the general day to day running about and have got quite used to not having to change gear too. The transition between being on the electric motor and the regular engine is imperceptible. Oh s**t yeah, I forgot this thread was about fuel economy... | ||
| General_ill |  | ... | 26-03-2010 @ 22:35 |
3rd place Europes strongest man 2016 U90kg Member 1239, 13275 posts SQ 280, BP 155, DL 310745.0 kgs @ 89kgs UnEq | Tom_Martin said: brynevans said:I've been running a Toyota Prius courtesy car whilst mines in the bodyshop(someone hit the back of me). According to the trip computer it's done 42mpg which has been mostly mixed urban driving, as much as I wanted to hate it I've quite enjoyed it for the general day to day running about and have got quite used to not having to change gear too. The transition between being on the electric motor and the regular engine is imperceptible. Oh s**t yeah, I forgot this thread was about fuel economy... Oh yer fuel economy the higher the better, etc etc I forgot that aswell BMW 330d next I think should get good MPG and MPH | ||