D1 Round 3.Message to Ivan Lau

[ivan78]

I don't know how t04 like. Currently original turbo is good enough. For me I feel like in between NA and turbo. But lack of torque at low rev. This is common for rotary.
What I need is turbo kick in early. Move the power band to front a bit.
For suspension, I’m using Tein HE. Front 8kg rear 6kg. The rear seems a bit soft. Now doing body sliming, should able to fix the rear problem. For front, every time I open throttle, the front will lift and cause under stear. Some expert advice to fix the rebound rate of the front absorber. Any one know where can do?

 

[Alchemis]

you gotta be kidding me... original turbo ?...
better go try slotting a 13B-REW in it... the twins are better at low end...
they spool up damn quick... 2.5 K RPM the 1st turbo is out... 4.5 K 2nd turbo out...
so.. need more power on low rev... that's the quick solution :)

but i heard also the T04Z by HKS it spools up really quick.... but it does cost quite a significant amount of money... :)

good luck...

 

[kuroneko]

you gotta be kidding me... original turbo ?...
better go try slotting a 13B-REW in it... the twins are better at low end...
they spool up damn quick... 2.5 K RPM the 1st turbo is out... 4.5 K 2nd turbo out...
so.. need more power on low rev... that's the quick solution :)

but i heard also the T04Z by HKS it spools up really quick.... but it does cost quite a significant amount of money... :)

good luck...

Fitting a 13b-REW from an FD requires quite a bit of work, and is usually not worth the hassle/time/money.

You can get plenty of power from the engine he has, it just depends if he's willing to spend the money. Porting plus a good sized ballbearing turbo should be sufficient for your drifting needs. I know you think the stockish power is sufficient, but you would have more of an advantage with a bit more power in my opinion.

 

[ivan78]

Fitting a 13b-REW from an FD requires quite a bit of work, and is usually not worth the hassle/time/money.

You can get plenty of power from the engine he has, it just depends if he's willing to spend the money. Porting plus a good sized ballbearing turbo should be sufficient for your drifting needs. I know you think the stockish power is sufficient, but you would have more of an advantage with a bit more power in my opinion.

Agree. I don't like FD twin turbo, the torque curve not stable as single turbo.
Original turbo is good enough so far, cause the side way won't more then 130 km/h. The more power I have, the more skill I need. Cause the judge need us to press the throttle up to 80% above.
Malaysian D1 only does in car park area, so more power doesn’t make much advantage. But power band and gear ratio is important.
Unless in Sepang circuit. Cruising at 180 km/h also feel nothing.

 

[Alchemis]

strip down the whole car and do something cool with it la.. :)
peripheral port it :)
so that u have the prap prap prap good sound :)
roar of the rotary :)

if you really like that single turbo.. get a larger one... really... go get it...

the twins are not too bad if u have a power FC to tune it as what you like it to behave :) right dev ? eheheh

 

[kuroneko]

strip down the whole car and do something cool with it la.. :)
peripheral port it :)
so that u have the prap prap prap good sound :)
roar of the rotary :)

if you really like that single turbo.. get a larger one... really... go get it...

the twins are not too bad if u have a power FC to tune it as what you like it to behave :) right dev ? eheheh

I was just explaining to - Diablo - that a P-port is not necessary, and probably not suitable for drifting. You can get the midrange/topend from a good aftermarket turbo. Also, if you want the pulsing, a bridgeport is probably the largest you'd want to go, if you don't want to rebuild your engine more often. Sure they make much more power, and P-Port makes even MORE power, but the larger the port, the more $$ it'll take to setup, and the less the engine life will be. Also, when you port, you shift the entire power band. So it is probably ideal, to get a street port + a good replacement aftermarket turbo. Of like I mentioned before, go hybrid, stick a larger compressor onto your stock exhaust housing, so you get factory spool up time, but you can also boost a bit higher (with supporting mods of course)

The twins are ok, but some don't have a smooth transition between turbo 1 and 2. When the primary stops and the 2ndary starts, the 2ndary is not fully spooling yet, so you don't get the whack until later. This isn't ideal for when you have to feather the throttle, between 3800-4000 or whenever the turbo's swap over. Some famous workshops have setup their twin with different turbines, like Petit Racing I think. Where the primary turbo kicks in, and the 2ndary starts spooling before the first one ends. Then when the first one stops, the 2nd one is almost at full boost.

 

[Alchemis]

twins with different turbine.. that's a piece of information i haven't hear before.... :) that system is a full set.. i don't think can dismentle unless fabricating a whole new set of twins with after markets :)

1st one stops ? i not too sure about it.. but i drive one :) it doesn't stop.. both runs together after 4000 RPM :)

it's true... low end stuff ain't so much of rotary's favor... there's something can do about it...

 

[kuroneko]

twins with different turbine.. that's a piece of information i haven't hear before.... :) that system is a full set.. i don't think can dismentle unless fabricating a whole new set of twins with after markets :)

1st one stops ? i not too sure about it.. but i drive one :) it doesn't stop.. both runs together after 4000 RPM :)

I don't quite understand, are you saying you're FD does not run sequentially? And that BOTH turbo's spool and boost at the same time?

 

[- D i a b l o -]

I don't quite understand, are you saying you're FD does not run sequentially? And that BOTH turbo's spool and boost at the same time?

both boost spool at the same time? LOL then why need twin turbos.singleT give you the same right?

Meanwhile,Ivan

at list staying to use 13BT does make you a "virgin" user of the FC3S.cheers to that!

 

[Alchemis]

if i'm not wrong about my car...

2 K plus the 1st turbo boost... it spools up very quickly...
approaching 2nd turbo around 4 K .... the 2nd turbo spools... it then kick in around 4 K plus where both turbo boosting together.

both of the turbos are identical size.. no point to use both if they are going to switch off the 1st one and let the 2nd one run. if in that case... it's redundant.. rather let the 1st turbo run all the way.. :)

i might be wrong..... but that's what i understand about my car. :)

 

[Alchemis]

BTW...

here's the stuff i got from the internet...

0 to 3,000 RPM

In this RPM range, boost is produced by the Primary Turbocharger only. At this time, most of the the exhaust is directed to the Primary Turbo by the Turbo Control, and the Secondary Compressor is isolated from the Primary by the Charge Control. Boost pressure is mostly regulated by the Turbo Pre-Control.

3,000 to 4,500 RPM
In this RPM range the Turbo Pre-Control valve is almost fully opened and preliminary rotation of the Secondary Turbo has begun, any boost pressure from the Secondary Turbo is vented via the Charge Releif Valve to the air cleaner. Boost pressure is regulated by the Turbo Pre-Control and the Wastegate Control.

At 4,500 RPM
At this time, the Secondary Turbo is at full preliminary rotation speed, the Turbo Control is opening, Charge Releif closes causing the Secondary Turbo to surge for a short time. The Charge Control then allows Secondary boost to be added to the Primary boost.

4,500 to Redline
The Turbo Control is fully opened, and boost pressure is created by the Primary and Secondary Turbochargers. When both Turbochargers are actuated, boost prerssure regulation is preformed by the Wastegate Control.

 

[David_1211]

FD twin turbo system is one you have on the JZA80, those twin turbo have 2different size...small size for low RPM and larger for higher RPM..this is to reduce the turbo lag in low RPm...Turbine in the smaller Turbo spin easier in low rev...am...i right?i'm new here...correct me if i'm wrong

 

[- D i a b l o -]

anyhow bro Ivan

i might be coming up north to see you drift.can you PM me ur hp or something..would love to meet you in person ^^