___________Rb25dett Neo!!!!!!!!!
tumso
09-04-2003, 01:45 PM
I'm nissan cefiro a31 owner from Thailand.
Now I search some data for dicision about my new engine.
(My old is 240,000Km)
my old engine is RB20DE AT with 4.083 (Don't know its called in english..)
I interested about NEO Engine but don't know about its spec.
I would like to know about this engine detail.
I saw a few used engines in Thailand (It came from Japan) I think it's very new & Interested!!!
One thing I heard that NEO6 is save ur petrol right?
You know in Thailand petrol is expensive (If u compare with our living costs ) & my city Bangkok was very traffic jam
or If I find some new engine for save petrol it's will be NA engine RB25DE NEO or not NEO
Could u give me some detail of this engine or some suggestion please ?
I will wait for ur answer
many Thanks
Tumso
Now I search some data for dicision about my new engine.
(My old is 240,000Km)
my old engine is RB20DE AT with 4.083 (Don't know its called in english..)
I interested about NEO Engine but don't know about its spec.
I would like to know about this engine detail.
I saw a few used engines in Thailand (It came from Japan) I think it's very new & Interested!!!
One thing I heard that NEO6 is save ur petrol right?
You know in Thailand petrol is expensive (If u compare with our living costs ) & my city Bangkok was very traffic jam
or If I find some new engine for save petrol it's will be NA engine RB25DE NEO or not NEO
Could u give me some detail of this engine or some suggestion please ?
I will wait for ur answer
many Thanks
Tumso
RazorGTR
09-04-2003, 02:27 PM
Welcome to AF :wave:
The R34 RB25DETT or RB25 NEO engine is a or was a brillant step forward for Nissan. They managed to get it right this time around by getting a bit more aggressive with ignition timing. Hence the nice jump in power from the factory. At a rated 280ps or 275hp it is the same as the R32, and R33 GTRs. Rated that is.
In order to get more power however you have to increase cylinder pressures. This is done one of two ways or a combination of both. Either increase the forced induction, or advance the ingnition timing combined with more fuel. More fuel means it will have poor petrol milage. Nissan did it with ignition timing in this case.
Now your Cefiro will need some major upgrades to be able to drop the turbo motor in but less with the N/A motor. Your transmission will not handle the increased torque and power of either motor so you will have to change that. This also means your driveshaft must either be altered or changed. Since you have an open diff putting that much more through it will not get you anywhere since only one wheel is the main drive wheel. Putting in either will require a ecu change and if you want to go to the turbo RB engine a complete fuel system delivery change is needed, plus an intercooler and all the piping.
A few guys have swaped their RB20's with RB20DET's here in New Zealand and pick up second hand Skyline GTS-t ecu to sort that part out. This is a much cheaper option in the long term. Yes they still did the fuel pump, and intercooler but finding an evo intercooler here or other ones second hand is easy and not too expensive.
The R34 RB25DETT or RB25 NEO engine is a or was a brillant step forward for Nissan. They managed to get it right this time around by getting a bit more aggressive with ignition timing. Hence the nice jump in power from the factory. At a rated 280ps or 275hp it is the same as the R32, and R33 GTRs. Rated that is.
In order to get more power however you have to increase cylinder pressures. This is done one of two ways or a combination of both. Either increase the forced induction, or advance the ingnition timing combined with more fuel. More fuel means it will have poor petrol milage. Nissan did it with ignition timing in this case.
Now your Cefiro will need some major upgrades to be able to drop the turbo motor in but less with the N/A motor. Your transmission will not handle the increased torque and power of either motor so you will have to change that. This also means your driveshaft must either be altered or changed. Since you have an open diff putting that much more through it will not get you anywhere since only one wheel is the main drive wheel. Putting in either will require a ecu change and if you want to go to the turbo RB engine a complete fuel system delivery change is needed, plus an intercooler and all the piping.
A few guys have swaped their RB20's with RB20DET's here in New Zealand and pick up second hand Skyline GTS-t ecu to sort that part out. This is a much cheaper option in the long term. Yes they still did the fuel pump, and intercooler but finding an evo intercooler here or other ones second hand is easy and not too expensive.
tumso
09-05-2003, 12:44 AM
Many Thanks
When you buy a secondhand engine in Thailand you will get a tranmission with engine.
My car change all brake from r32gts already. Now I just decision about engine between NA and Turbo cause Thailand petrol is expensive (If u compare with our living costs ) & my city Bangkok was very traffic jam
maybe I find some new engine for save petrol right?
it's will be NA engine RB25DE NEO or not NEO
When you buy a secondhand engine in Thailand you will get a tranmission with engine.
My car change all brake from r32gts already. Now I just decision about engine between NA and Turbo cause Thailand petrol is expensive (If u compare with our living costs ) & my city Bangkok was very traffic jam
maybe I find some new engine for save petrol right?
it's will be NA engine RB25DE NEO or not NEO
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