question about blitz k20 turbo

[heikobe]

Hey guys,
I know these questions might been asked for thousand times and i would be asked to use the search function. But believe or not i did search for weeks..nothing comes..

Anyway, here's the question.
I heard people saying k20 is good to street as it spools quicker than td04 but makes same level of power. With the reasonable mod, at what rpm can k20 make full boost? Also how much boost is the best for k20 to perform?

As it's a street car, what mod would you reckon in order to make the best balance of fast, reliable and spending? I'm not a hp chaser, i want something drivable and well-balance between power and response.

Welcome to throw some idea. Really want to know more about this turbo.
Btw my car is a 4e gt with some basic mod.
Thank you very much!

cheers
Jerry

 

[AdamB]

Believe the turbo your looking for is the K24

 

[Rev]

K24 x2.
You have to know what your driving habits are as the K24 has a strongest pull in the 3600-4600 area whereas tdo4 equivilant is probaly 4200-6200 around 20degC and will continue at higher revs the k24 has run out of puff approaching 6000rpm depending which exhaust housing you choose.

The thing is in colder conditions the K24 spool can be much better on a 4e but for hot or cold the best blitz K24 dyno I have seen was a 5e the torque in a limited range is so outstanding for a road car you would not hesitate to part with the top end power of the tdo4's.

Regarding spool it takes off around 3300rpm on K24 vs typically 3600rpm with tdo4 but tdo4 13g being earlier. You will see dynos showing 3000 rpm but temps and barometric pressure need to be looked at closely on these dynos.

 

[heikobe]

K24 x2.
You have to know what your driving habits are as the K24 has a strongest pull in the 3600-4600 area whereas tdo4 equivilant is probaly 4200-6200 around 20degC and will continue at higher revs the k24 has run out of puff approaching 6000rpm depending which exhaust housing you choose.

The thing is in colder conditions the K24 spool can be much better on a 4e but for hot or cold the best blitz K24 dyno I have seen was a 5e the torque in a limited range is so outstanding for a road car you would not hesitate to part with the top end power of the tdo4's.

Regarding spool it takes off around 3300rpm on K24 vs typically 3600rpm with tdo4 but tdo4 13g being earlier. You will see dynos showing 3000 rpm but temps and barometric pressure need to be looked at closely on these dynos.

Thanks for sharing!
my friend told me there is a blitz turbo bolted on to the stock manifold...
Not sure if it is the k24...
Anyway, do you mean td04 can spool to higher rpm while k24 produces most power in 3600-4600?
But for under cold and hot td04 performs better???
i am looking for a turbo that give me good response but also more power and boost than ct9.

thank you so much for patience.
Jerry

 

[Rev]

Blitz k24 kit has adapter that converts the stock manifold to k24.
Not spool but acceleration. For K24 3600-4600 is the steepest part of the torque curve so the max acceleration is happening here which is generally earlier but for a shorter time than the tdo4's which run steep for longer and increase higher at higher revs. My theory is the K24 is designed to stop gaining torque at higher revs when a safe slip limit for the auto box has been reached.

With hot climate you will lose spool , torque and power so you have to plan for more than you want. The k24 ( 3.14 housing ) has more torque initially but will be less after say 4500 than the td04's. This means the K24 should be very flexible if you rarely need 5000rpm. Some td04 13g turbos spool very well and give 10-20hp more up top.
Of course if you dont get over 4000rpm you may be faster with a ct9 4e .

 

[heikobe]

Blitz k24 kit has adapter that converts the stock manifold to k24.
Not spool but acceleration. For K24 3600-4600 is the steepest part of the torque curve so the max acceleration is happening here which is generally earlier but for a shorter time than the tdo4's which run steep for longer and increase higher at higher revs. My theory is the K24 is designed to stop gaining torque at higher revs when a safe slip limit for the auto box has been reached.

With hot climate you will lose spool , torque and power so you have to plan for more than you want. The k24 ( 3.14 housing ) has more torque initially but will be less after say 4500 than the td04's. This means the K24 should be very flexible if you rarely need 5000rpm. Some td04 13g turbos spool very well and give 10-20hp more up top.
Of course if you dont get over 4000rpm you may be faster with a ct9 4e .

my friend told me that's blitz k1-200V..Sorry for my mistake..
So how would you rate it??? Good for fast street purpose?

 

[AdamB]

The Blitz K1 is just basically a hybrid of the ct9, it shares the same footprint. I believe they are only good for about 220bhp though, but super spool. It's what a lot of the JDM cars used for circuit racing. I think the JAM glanza used the K1.

 

[Rev]

As Adam said a hybrid turbo but power increases smoothly rather than in one hit . The k1 200v has ct9 character low down good mid torque and with extended top end. Basically designed for 200hp at 20C but can do more with proper setup 205- 210hp seems common.
The turbo is rated to 18.85psi ( 1.3 bar ) and I think blitz access k1 ecu runs it to 19psi.
The main issue is controlling temp. at the higher boost to unlock the top end power.

There are also different compressors to consider 5 blade and 6 blade with different character some use ct12 compressor with ct9a exhaust wheel but I have also seen special compressor wheels on yahoo Japan developed for this turbo .

 

[heikobe]

As Adam said a hybrid turbo but power increases smoothly rather than in one hit . The k1 200v has ct9 character low down good mid torque and with extended top end. Basically designed for 200hp at 20C but can do more with proper setup 205- 210hp seems common.
The turbo is rated to 18.85psi ( 1.3 bar ) and I think blitz access k1 ecu runs it to 19psi.
The main issue is controlling temp. at the higher boost to unlock the top end power.

There are also different compressors to consider 5 blade and 6 blade with different character some use ct12 compressor with ct9a exhaust wheel but I have also seen special compressor wheels on yahoo Japan developed for this turbo .

210 hp seems really good on starlet!!
so main issue for k1 is cooling??
what size of intercooler can do the job well?
large FMIC seems affect the low end...

BTW, put the brand stuff in one side,
which turbo would you pick, K1 or hybrid ct9?

 

[AdamB]

You may want to check out Race-Tech over here in UK, they have just bought out a new hybrid ct9, still awaiting testing though I believe.
Try looking for a greddy intercooler, I don't think they make a kit starlet specific anymore. If you check out the FMIC king thread there's some good info in there about it. Small in size and has great cooling capacity.

 

[Rev]

which turbo would you pick, K1 or hybrid ct9?

I would pick which ever turbo is closest to 150ftlb torque and 100hp at 3000rpm at around 25deg C and still has power to spare around 200hp ideally at 1 bar.
I think think this used to be a G spec tongs turbo hybrid?

 

[heikobe]

I would pick which ever turbo is closest to 150ftlb torque and 100hp at 3000rpm at around 25deg C and still has power to spare around 200hp ideally at 1 bar.
I think think this used to be a G spec tongs turbo hybrid?

G spec tong turbo hybrid??
It sound interesting to me!
what Turbo is that?? A custom made hybrid turbo??