Twin Turbo cossie engine?
#83
the twin turbo engine i saw was a turbo technics development
2 small turbos on the same manifold blowing form 1 and 4 and 2 and 3 and then having a bit in the middle that opened to allow both turbo's to see all cylinder exhaust gasses
it was a Ł6k option but i'm not sure if anyone actually bought one
2 small turbos on the same manifold blowing form 1 and 4 and 2 and 3 and then having a bit in the middle that opened to allow both turbo's to see all cylinder exhaust gasses
it was a Ł6k option but i'm not sure if anyone actually bought one
#84
I am very interested in building a twin charged engine, ie Supercharged and turbo'd. The main problem is finding the room under the bonnet to fit a decent sized supercharger to make the boost at the low end.
#85
#86
#88
Does anyone know of any twin turbo cossie engines, was looking at some dinky journal bearing turbos at work today and wondered if one could be made to wake up a T4 a bit earlier in teh revs..
Any info or ideas on how to make it work? would a little turbo be able to hold back the boost of a t4 at say 28psi through its compressor housing?#
I'm sure I've seen a twin turbo'd cossie engine in one of the mags before somewhere.
Cheers
Dan
Any info or ideas on how to make it work? would a little turbo be able to hold back the boost of a t4 at say 28psi through its compressor housing?#
I'm sure I've seen a twin turbo'd cossie engine in one of the mags before somewhere.
Cheers
Dan
But in theory and practice not good economics at all.
Sort of like building a twin engined CHV RS Turbo, when you could just put in 1 YB.
#92
in the video of the car on the road it did sound an absolute beast and spooled up very fast. shame it was never tried with a proper built engine but it could have been a very expensive lesson and one not many would like to make.even if the car had made 800atw martin wasn't really one for coming on singing about it like most folk.
chip i take it you have got lots of experience of 1300bhp rated turbos on cossies if you reckon you can get them to spool up the same
you admitted yourself you didnt have any first hand experience of compound charged car yet by your replys you'd hardly think so..
i remember when you used to rip fook out of phil for going on about shit he had read in books and never actually experienced
and i aint an ava lover or hater just like to see different things and folk trying new things.would be good if ava carried on the work themselves
chip i take it you have got lots of experience of 1300bhp rated turbos on cossies if you reckon you can get them to spool up the same
you admitted yourself you didnt have any first hand experience of compound charged car yet by your replys you'd hardly think so..
i remember when you used to rip fook out of phil for going on about shit he had read in books and never actually experienced
and i aint an ava lover or hater just like to see different things and folk trying new things.would be good if ava carried on the work themselves
#97
My old Saff engine made 399.4 atw & like Mike we claimed 500bhp fly, makes you realise what a lot of Bullshit both Mike & myself spoke at the time. However they were the 2 fastest proven Saffs in the UK at the time, so all the rest must have had less.
#98
This car is on off my friends car and they used 2 mitsubishi turboes on it, had SHIT fast spool up and good top end also, but it never made any ok power (stage 3 was faster) but i liked the project.
It did drive for 3 years until it lost a valve tho
#99
#100
so what would happen if you took the outlet off the small turbo into the inlet of the big turbo in my eye's it would help it spool up quicker as the turbo would be getting spooled up from both ends bit i suppose it would become restrictive once the big turbo gets going and needs the airflow going in....
#102
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get what oyur saying but mention the N word to the insurance companies and they rub their hands..
Does anyone on here have nitrous on a cossie road legal with insurance declared?
I couldn't have it fitted and not use it on the road....I wouldn't be able to resist tbh.
Dan
Does anyone on here have nitrous on a cossie road legal with insurance declared?
I couldn't have it fitted and not use it on the road....I wouldn't be able to resist tbh.
Dan
#103
http://www.turbochargers.com/store/p...dec3d68698f2cb
P.S Thats not for quick spool-up, thats just the turbo used on Dumpeds
P.S Thats not for quick spool-up, thats just the turbo used on Dumpeds
#104
The only trouble with Nitrous is the stupid refil costs, looking at the best part of Ł50 for a 22Lbs bottle, if not more now! And thats 7 mins on average, soon works out to be a VERY expensive hobby!
#105
AVA wouldnt build a car for you Kev. They dont believe in tried and tested, bullet proof methods. If its not gonna take years and make the owner lose interest and break the car they dont wanna know.
To get a car to do what you're escos did they'd need 8 years of development with 50% of that time being alan telling you how his rolling road is accurate and everyone elses lies.
#107
#109
#110
Also just as I always like to clarify on the AVA day (here come the "excuses" ).
1. My car was running 3.36 gearing, which meant that 4th gear was equivalent to most other Cossies fifth gear (well over 160mph rolling road speed), which as you know takes a chunk of power away compared to standard gearing.
2. ACTs exceeding 50°C (one hot day Scotland had with ambients well into the mid 20s ). This meant that the water injection was flat out, although this prevents the huge chunk of power being lost from ignition retard, the water does still loose a not insignificant amount of power.
However, it did hold boost perfectly, and as an indication of the effect the charge temps had, it made 320bhp @ wheels at 1.0 - 1.2 bar with the charge temps (high 30s) being able to be held below the WI point (42°C) at this level of boost, and only an additional 75bhp @ wheels at 2.2 bar with the charge temps into the 50s and the WI flat out.
Knowing what I know today, with the same car, same engine and same conditions, I bet it would show well into the 400s at the wheels with some relatively minor hardware tweeks (better intercooler, exhaust and shorter final drive). Which would equate to around 480-490bhp at the flywheel - about spot on for a 515bhp dyno figure .
Last edited by Mike Rainbird; 25-02-2009 at 07:47 AM.
#111
#112
A 200 shot being pushed with Nitrogen like mine a 11lb bottle lasts 32secs for around Ł65 you can reduce that 32 to around 25secs of efficient use so thats Ł65 each run down Brunters .
#113
#114
To be fair, I always used to say that despite it making 515bhp on the engine dyno, that once put in the car with all the ancilliaries added, plus a restrictive exhaust, intake and inadequate charge-cooling, you instantly loose 20-30bhp from the engine dyno (this is why with all my subsequent engines, they were dynoed with the airbox and exhaust system in place where possible ).
Also just as I always like to clarify on the AVA day (here come the "excuses" ).
1. My car was running 3.36 gearing, which meant that 4th gear was equivalent to most other Cossies fifth gear (well over 160mph rolling road speed), which as you know takes a chunk of power away compared to standard gearing.
2. ACTs exceeding 50°C (one hot day Scotland had with ambients well into the mid 20s ). This meant that the water injection was flat out, although this prevents the huge chunk of power being lost from ignition retard, the water does still loose a not insignificant amount of power.
However, it did hold boost perfectly, and as an indication of the effect the charge temps had, it made 320bhp @ wheels at 1.0 - 1.2 bar with the charge temps (high 30s) being able to be held below the WI point (42°C) at this level of boost, and only an additional 75bhp @ wheels at 2.2 bar with the charge temps into the 50s and the WI flat out.
Knowing what I know today, with the same car, same engine and same conditions, I bet it would show well into the 400s at the wheels with some relatively minor hardware tweeks (better intercooler, exhaust and shorter final drive). Which would equate to around 480-490bhp at the flywheel - about spot on for a 515bhp dyno figure .
Also just as I always like to clarify on the AVA day (here come the "excuses" ).
1. My car was running 3.36 gearing, which meant that 4th gear was equivalent to most other Cossies fifth gear (well over 160mph rolling road speed), which as you know takes a chunk of power away compared to standard gearing.
2. ACTs exceeding 50°C (one hot day Scotland had with ambients well into the mid 20s ). This meant that the water injection was flat out, although this prevents the huge chunk of power being lost from ignition retard, the water does still loose a not insignificant amount of power.
However, it did hold boost perfectly, and as an indication of the effect the charge temps had, it made 320bhp @ wheels at 1.0 - 1.2 bar with the charge temps (high 30s) being able to be held below the WI point (42°C) at this level of boost, and only an additional 75bhp @ wheels at 2.2 bar with the charge temps into the 50s and the WI flat out.
Knowing what I know today, with the same car, same engine and same conditions, I bet it would show well into the 400s at the wheels with some relatively minor hardware tweeks (better intercooler, exhaust and shorter final drive). Which would equate to around 480-490bhp at the flywheel - about spot on for a 515bhp dyno figure .
Despite that war & peace of excuses Mike it was still slower than mine at Brunters a fact that you can never change .
#115
#116
But guess what? I'm not that bothered, it was fun at the time, and we both NOW know it would have gone faster on standard gearing, so that is good enough for me .
#118
#119
It was featured in it's new guise in Performance Ford . Can't remember when though . Is now white (best colour, I'm sure you will agree ) and on it's original registration .
The current (Irish) owner phoned me a few weeks ago and asked me if I wanted to buy it back . However, he wouldn't want to let it go for what I would want to pay for it .
The current (Irish) owner phoned me a few weeks ago and asked me if I wanted to buy it back . However, he wouldn't want to let it go for what I would want to pay for it .
#120