R
Rolf
Guest
Any argument on that matter is nil and void as acssa has set his own goal posts by talking racing engines and racing fuel :blab:
end of story....
end of story....
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Read the WELCOME ALL BMWFANATICS post.
F30 320i vs f30 328i
- Thread starter bilal04
- Start date
Julz
Member
To run boost on a high compression engine is highly impractical.First of all you run the risk of some serious detonation and secondly you are doomed to always running Methanol or high Octane fuel which doesn't make it a Street friendly setup.I agree that high compression will spool up the turbo quicker but it still makes more sense to match the right Turbo to a low compression setup for maximum boost.
The only reason they would run higher compression on the 320 is to limit its tuning potential.Not everybody is happy running high Octane fuel or Methanol on their daily drive.
The only reason they would run higher compression on the 320 is to limit its tuning potential.Not everybody is happy running high Octane fuel or Methanol on their daily drive.
The 2JZ engines are port injection... direct injection is a hole new story. It also depend on the piston material that is used. Cast of forged.
The 2l N20 engine according to bmw is the 335 engine with 2 cyl chopped off... small differences. They usually get pistons supplied from Mahle(forged). I hope to get hand on a crashed 328 so we can check and play a bit... and then we will do the same on the 320 engine.
I heared that some piggy back company is looking into adding a flexfuel sensor to its box, so when you add ethanol to fueltank it will do automatic AFR compensation while increasing boost.
Methanol injection is also used by some to increase boost but its a pain to maintain.
no goal... my 320 stays stock as a daily drive and it has more than enough power for a JHB traffic. Weekends is for the toys to play with...
I am just adding some info to explain principles.
As I mentioned before... first 8:1 was the rule on a turbo. Then came new ecu's with knock sensors and 8.5-9:1 became common. Then came direct injection so we can run 10-11:1.
Times and technologies change.
The 2l N20 engine according to bmw is the 335 engine with 2 cyl chopped off... small differences. They usually get pistons supplied from Mahle(forged). I hope to get hand on a crashed 328 so we can check and play a bit... and then we will do the same on the 320 engine.
I heared that some piggy back company is looking into adding a flexfuel sensor to its box, so when you add ethanol to fueltank it will do automatic AFR compensation while increasing boost.
Methanol injection is also used by some to increase boost but its a pain to maintain.
Rommies said:
no goal... my 320 stays stock as a daily drive and it has more than enough power for a JHB traffic. Weekends is for the toys to play with...
I am just adding some info to explain principles.
Rolf@PromotecAuto said:
As I mentioned before... first 8:1 was the rule on a turbo. Then came new ecu's with knock sensors and 8.5-9:1 became common. Then came direct injection so we can run 10-11:1.
Times and technologies change.
Julz said:
R
Rolf
Guest
We are still not discussing things on the original subject.
Standard production vehicles do not have water / meth injections and playing with piggyback system on fuel on the F30 320i might give you some gains but I can promise you that your economy will go down the drain :thumbdo:
Standard production vehicles do not have water / meth injections and playing with piggyback system on fuel on the F30 320i might give you some gains but I can promise you that your economy will go down the drain :thumbdo:
A B
///Member
Quite an interesting topic.
Been to a dealer over the weekend to look at the F30 328i and this idiot tries to sell me a 320d because, and I quote:
"performance is the same"
"there is no need for the extra kw power"
"why spend the extra money on something that you not going to use"
And the more I trying to tell him this is what I want, the more he explains that he's trying to save me money.
Been to a dealer over the weekend to look at the F30 328i and this idiot tries to sell me a 320d because, and I quote:
"performance is the same"
"there is no need for the extra kw power"
"why spend the extra money on something that you not going to use"
And the more I trying to tell him this is what I want, the more he explains that he's trying to save me money.
F30 cars are new generation so still on 5 year maintenance, no one in their right mind would want to void this.
If you buy a new car, buy the more powerful.
There is a big difference between a road car and a racing car.For the normal guy in the street he wants to stop at a filling station and carry on.You are your cars doctor.If you want to make more power it is your responsibility to give the engine the correct octane.
Want to make power go buy yourself a toy to use weekends.
Higher compression is more efficient (volumetric efficiency) but not allowable due to poor fuel quality.
The modern day car has ECU that will try and bring mixture to 14 to 1 mixture.
Biofuels (ethanol/ methanol) cannot produce the same energy per litre.Travelling at the same speed on the hiway the engine will consume far more fuel.
If you get 10l/100 with 95 you will go up to 11 or 12l/100 depending on mix.
My advice save till you can afford the F30 328i. Remember if you do your buying in steps you are going to lose a lot of money because the VAT on your car never comes back.
If you buy a new car, buy the more powerful.
There is a big difference between a road car and a racing car.For the normal guy in the street he wants to stop at a filling station and carry on.You are your cars doctor.If you want to make more power it is your responsibility to give the engine the correct octane.
Want to make power go buy yourself a toy to use weekends.
Higher compression is more efficient (volumetric efficiency) but not allowable due to poor fuel quality.
The modern day car has ECU that will try and bring mixture to 14 to 1 mixture.
Biofuels (ethanol/ methanol) cannot produce the same energy per litre.Travelling at the same speed on the hiway the engine will consume far more fuel.
If you get 10l/100 with 95 you will go up to 11 or 12l/100 depending on mix.
My advice save till you can afford the F30 328i. Remember if you do your buying in steps you are going to lose a lot of money because the VAT on your car never comes back.
bilal04 said:
From the homework I have done and the buddies that I have spoken to at BMW Plant.
F30 320i and F30 328i is same platform , same pistons etc. (2013 onwards)
Loved the car so much that I went out and bought TWO F30 320i's
I have test driven a F30 320i pushing out some serious horse power with very subtle mods done to it , so yes to answer your question IMO 320i with map and you up onto 328i power.
Things to consider is 328i is detuned and car easily see more.
All depends on the POWER you after.
MAJOR component to ensure you have is the ZF 8 speed gearbox , this is where all the magic is IMO
:thumbs:
Dean ///M
Limited Profile
The pistons are different on both these cars. Terry posted a pic of it a few weeks ago but the 320i does make good power with the JB tune check out Burger Tuning, gains are really impressive and the same tune can be used on both engines (N20/N26). The 320 gets close to 328i power & 328i gets close to stock 335i power levels.
///M-Powered
New member
Hi guys
My buddy works for the bmw plant at Rosslyn. He did say that the twin scroll turbo on the 328 is slightly larger than a standard K04, whereas th 320 uses a smaller one. So i guess, besides th CR and a few other goodies, another practical explaination is the turbo. Yes, and the sports auto box
My buddy works for the bmw plant at Rosslyn. He did say that the twin scroll turbo on the 328 is slightly larger than a standard K04, whereas th 320 uses a smaller one. So i guess, besides th CR and a few other goodies, another practical explaination is the turbo. Yes, and the sports auto box
S
S1NGH 001
Guest
Chip logic is claiming to achieve 210kw from the 320i :thumbs:
S
S1NGH 001
Guest
Gbmw said:
Would be nice to see one making that power :rollsmile:
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