Comments on Black Top 20v

[rollakid]

dun forget gear ratios XD. having a 5.3:1 trd final drive isn't going to help in getting better FC

 

[youmolo]

EFI should have good FC as long as you are using very conservative fuel mapping on your ECU. If you have a racing ECU and you keep dragging the car, most probably FC will b terrible :)

 

[samuelccy]

of coz we can't aspect to drive like mad cow but can reach abt 400km for 40litres la ... but at least a relatively reasonable FC over is HP produced ...

 

[youmolo]

haha 165hp on a 1.6 is quite amazing, although in reality a stock blacktop produces less than 165hp. but it's still way more powerful than some 1.8 out there. and being a na 1.6, your fuel economy will still be relatively good ;)

 

[rollakid]

my fc is bad.. maybe because i dun have an o2 sensor....

 

[GSRTurbo]

Interesting discussion, Heard about the lack of torque compare the 20v against the 16v at lower rpm, izzit true?
If I were to mod the engine izzit better to use the 16v or the 20v, cause i heard a lot of forummers favour 16v compare to 20v, and its cheaper to mod, any xperience?

 

[ahchi]

Just would like to share some comments too, I just drive my just transplanted EE90 with 20V BT auto. I don't know whether is it the car not yet fine tune or setup, I just feel like it's really lack of torque during pickup, it''s just like you press the pedal but it don't give the fast response as you think, especially when I compare to my SM4 F20A twincam auto. Is it the 20V BT auto really just that peformance or is it something else related to engine tuning, exhaust etc? Please share your comment, especially for 20V BT auto owner.

 

[GSRTurbo]

Any one tried mating the big port top to the small port block, stock std. Herad the small port with the 7rib block is tougher than the 3rib block on the big port.

 

[rollakid]

Any one tried mating the big port top to the small port block, stock std. Herad the small port with the 7rib block is tougher than the 3rib block on the big port.

theorically big port block should be easier to rev since the internal is lighter, but then weaker. small port block is more durable as well as the internal, but small port head is better too if you don't plan to go over 200hp or extreme high reving, since small port head gives better intake air velocity compare to big port, thus more power.

use big port only if you are making extreme high rev NA or turbocharging. thats what it is said in bill sherwood's site at least. make sense.. theorically.

 

[samuelccy]

Interesting discussion, Heard about the lack of torque compare the 20v against the 16v at lower rpm, izzit true?
If I were to mod the engine izzit better to use the 16v or the 20v, cause i heard a lot of forummers favour 16v compare to 20v, and its cheaper to mod, any xperience?

yea yea .. I'm having 4AFE now ... thinking to juz mod w my current engine or convert to 20v ...

 

[youmolo]

Interesting discussion, Heard about the lack of torque compare the 20v against the 16v at lower rpm, izzit true?
If I were to mod the engine izzit better to use the 16v or the 20v, cause i heard a lot of forummers favour 16v compare to 20v, and its cheaper to mod, any xperience?

if u really want to mod, get a 16v. more potential for supercharging or turbo charging.

 

[youmolo]

Just would like to share some comments too, I just drive my just transplanted EE90 with 20V BT auto. I don't know whether is it the car not yet fine tune or setup, I just feel like it's really lack of torque during pickup, it''s just like you press the pedal but it don't give the fast response as you think, especially when I compare to my SM4 F20A twincam auto. Is it the 20V BT auto really just that peformance or is it something else related to engine tuning, exhaust etc? Please share your comment, especially for 20V BT auto owner.

yea, i share the same experience too. If i'm in the wrong gear and my rpm is around 1.5-2k, i step full and nothing much happens. But once it picks up speed and enters the 3k range, you can feel the pickup.

for auto you have no choice in changing gears. But when you step full on the pedal, does the tranny shift down to lower gears?

 

[ahchi]

yea, i share the same experience too. If i'm in the wrong gear and my rpm is around 1.5-2k, i step full and nothing much happens. But once it picks up speed and enters the 3k range, you can feel the pickup.

for auto you have no choice in changing gears. But when you step full on the pedal, does the tranny shift down to lower gears?

Well, when I step full on the pedal, nothing much hapen too, especially when you are in 4th gear, it won't drop to 3rd gear easily, unless you are in power mode. However, I agree with you that when it reach 3k rpm, the power is coming drastically.

 

[youmolo]

yea, if the rpm is low and u're at 4th or 5th, there's no power. so better to shift down if you want to accelerate faster. for auto tranny i think there's nothing much u can do.

 

[buck-7]

just read the thread, my expirience with the bt shows only one weakness, its vvti pulley. thats the thing that fails which makes it loose power at the lower revs and also give you that noisy cam operation.
a set of adjustabloe pulley will cure that but again you either set it for street or track setting.
oh yeah, the temp pick up it at the top so if you have a coolant leak the temp meter will show normal as its only reading hot air.
there were a few times where i had a coolant leak and i didnt notice the engine was over heating from the temp reading untill i hear the engine started to ping.
its a good idea to run an oil temp meter with this engine, well actually any other engine that is.
other than that, there's nothing that can compare to the BT rev happy characteristics in this 1.6 class except for honda's b16.

 

[youmolo]

just read the thread, my expirience with the bt shows only one weakness, its vvti pulley. thats the thing that fails which makes it loose power at the lower revs and also give you that noisy cam operation.
a set of adjustabloe pulley will cure that but again you either set it for street or track setting.
oh yeah, the temp pick up it at the top so if you have a coolant leak the temp meter will show normal as its only reading hot air.
there were a few times where i had a coolant leak and i didnt notice the engine was over heating from the temp reading untill i hear the engine started to ping.
its a good idea to run an oil temp meter with this engine, well actually any other engine that is.
other than that, there's nothing that can compare to the BT rev happy characteristics in this 1.6 class except for honda's b16.

i thought the vvt is to give better lower end power?

 

[toyoae111]

BT is not bad~ hv u guys test 0-400 on ur BT? whats the second u got? mine 15.5 sec... plz share.. :_:

 

[buck-7]

i thought the vvt is to give better lower end power?

yup, thats what i said.

 

[Harris3s]

How about 4agze supercharge 165hp without air Flow? can tapau svt n Bt ?

 

[rollakid]

4agze 25% more torque than 20v, pickup sure win, but around the track different story lar...