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Discussion Starter · #1 ·
hey im a practical gtr 33 owner not wanting massive power. i am getting terrible petrol consumption and was wondering if anyone would recommend a single turbo conversion. would i get better gas mileage? will the conversion be expensive? what turbo would be recommended? not too big and not too small...thanx guys.
 

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Have a look at any of the single vs twin threads. Basically there is no right answer. I'd be surprised if turbo choice would have much impact on fuel economy. ECU might be a better starting point.
 

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any time you increase the power of the engine you will increase the fuel consumption, so putting a bigger turbo(s) on, be it single or twins, won't solve your problem

as above, more likely to be an ecu or fueling issue, so your first stop should be a specialist to diagnose what's happening

for the record you'd be looking at ~£5 grand just for the turbo kit (incl manifold), and you'd then need to do a whole lot more upgrades to get the true benefit
 

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Discussion Starter · #5 ·
hey im not looking for something massive. just a simple turbo. i had a small forced performance turbo on my subaru wrx. had much more mods and had a nice 350 to the wheels at 18 lbs. i seldom boosted it except when i felt like a small rush. it did the job and had real practical gas economy. i know the rb26 is a much bigger engine and more impressive specs so it wont be quite as good, but im getting like 350 km out of 55 liters. just a lot more expensive than i thought. would i need a whole conversion kit to go single? nothing just to change the inlet pipes and bolt the turbo to it? my idea is to just take the biturbo out and put a single on. simple. am i in a nice dream?
 

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hey im not looking for something massive. just a simple turbo. i had a small forced performance turbo on my subaru wrx. had much more mods and had a nice 350 to the wheels at 18 lbs. i seldom boosted it except when i felt like a small rush. it did the job and had real practical gas economy. i know the rb26 is a much bigger engine and more impressive specs so it wont be quite as good, but im getting like 350 km out of 55 liters. just a lot more expensive than i thought. would i need a whole conversion kit to go single? nothing just to change the inlet pipes and bolt the turbo to it? my idea is to just take the biturbo out and put a single on. simple. am i in a nice dream?
yes, nobody has dreamed to do like that :)

350km for 55 liter is just about usual for r33 gtr..depending on how u drive

single conversion is big work bro...even taking off the twin turbo is big work -read the thread in this forum

usually people go single for minimum 600hp
 

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Discussion Starter · #7 ·
arrite. thanx. unfortunately what i figured. i drive wicked conservative. seldom reach over .6 bar and cruise around 2800 and 3500 rpm. just trying to save on gas. now at the same time, and i damaging the motor at such low rpm's or am i in a good range?
 

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from what ive seen, full single turbo kits can be had below £1k up to £5k...
including manifold, oil feeds and all ancillaries?

£5 grand minimum to get the job done

where is this single turbo kit for a grand?

i'd like to see it
 

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including manifold, oil feeds and all ancillaries?

£5 grand minimum to get the job done

where is this single turbo kit for a grand?

i'd like to see it
TheGTRShop.com
£599 + p&p t88 turbo, manifold plus wastegate...davew sold it

http://www.gtr.co.uk/forum/129321-rb25-manifold-rb26.html
"£1100 for the full kit. Adaptor plates warp, and cause leaks."
Chris Wilson is selling one NOW - RX6 single turbo 500hp, low mount apexi manifold plus wastegate.

Plus, 1 COMPLETE filter to downpipe T78 kit for around £1000 accepting offers.... but from Korea. Cooljustin selling on here.
 

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If you think any turbo conversion giving similar power to stock will gain MPG you are dreaming, as you are basically saying you can better Nissans installation for MPG and keep similar performance. It COULD be done, as technology has moved on., but would the resources of a car manufacturer to achieve it. I would suggest the car is checked with a wide band lambda for fuelling issues, and given a full service and health check. You can't expect what is basically a 5.2 litre car (2.6 litre blown to 1 bar) to have good MPG. If you really want to have a Skyline with reasonable MPG you might consider a GTS-t with an LPG conversion, but it sounds daft to me :)
 

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Instead of spunking thousands of pounds on parts you don't need, why don't you just buy a cheap snotter to run around in?
 

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Spend the money on a set of new o2 sensors, getting your injectors cleaned... then buy a Nistune and have Steve @ FC Tuning adjust the map for your closed loop control. This will sort out your mpgs around town and cruising. It also wont impact your open loop performance which he will map also and you should see more torque lower in the RPMs....

all that lot will cost you about a grand, inclusive of mapping and dyno time.
 
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