What turbo to achieve 350bhp?
- Thread starter srankin90
- Start date
Just an idea of lag.
What I had on my first 4EFTE set up was a TB28
Consists of T3 intake and T25/T28 exhaust.
I ran it on the standard manifold and a stupid stand alone not tuned on a dyno.
Turbo was rated 280hp
Turbo specs were something like.
Compressor: inducer 43mm exducer 58mm
Turbine: Inducer 51mm Exducer 46mm A/R 0.49
Boost was set at 0.6bar and I had that before 40km/h in first gear
2nd gear full boost was at 60km/h
Gearbox got about 72km/h in 1st at rev limit 8000rpm 2nd ger rev limit 130km/h
TD05 16,18,20 all have a A/R 0.49 exhaust housing with the same exhaust wheel.
All have a 68mm turbine exducer
Only trims differ and thus the inducer also.
16G 48mm should be good for 320hp?
18G 50.6mm 48mm should be good for 340hp?
20G 52.6mm 48mm should be good for 360hp?
You need more CFM through the exhaust housing to make the bigger compressor spool.
The VF48 can be compared to a 18G I would say
If you see on a Subaru forum than a turbo can handle xxPsi then you can get more out of it on your 1.3L
If a turbo is rated for an amount of HP then it means it can flow that amount.
Example: lets say Subaru will make 300hp with a 16g @ 22Psi then a 4EFTE will make 300hp @ 30Psi
CFM is related to HP, so on a smaller engine you need to run higher boost to get to the turbo max CFM compared to a bigger engine that will top it at lower boost.
Hope this helps a bit
What I had on my first 4EFTE set up was a TB28
Consists of T3 intake and T25/T28 exhaust.
I ran it on the standard manifold and a stupid stand alone not tuned on a dyno.
Turbo was rated 280hp
Turbo specs were something like.
Compressor: inducer 43mm exducer 58mm
Turbine: Inducer 51mm Exducer 46mm A/R 0.49
Boost was set at 0.6bar and I had that before 40km/h in first gear
2nd gear full boost was at 60km/h
Gearbox got about 72km/h in 1st at rev limit 8000rpm 2nd ger rev limit 130km/h
TD05 16,18,20 all have a A/R 0.49 exhaust housing with the same exhaust wheel.
All have a 68mm turbine exducer
Only trims differ and thus the inducer also.
16G 48mm should be good for 320hp?
18G 50.6mm 48mm should be good for 340hp?
20G 52.6mm 48mm should be good for 360hp?
You need more CFM through the exhaust housing to make the bigger compressor spool.
The VF48 can be compared to a 18G I would say
If you see on a Subaru forum than a turbo can handle xxPsi then you can get more out of it on your 1.3L
If a turbo is rated for an amount of HP then it means it can flow that amount.
Example: lets say Subaru will make 300hp with a 16g @ 22Psi then a 4EFTE will make 300hp @ 30Psi
CFM is related to HP, so on a smaller engine you need to run higher boost to get to the turbo max CFM compared to a bigger engine that will top it at lower boost.
Hope this helps a bit
So that makes the likes of the 18g and 20g a very unbalanced turbo if they use the same exhaust housing and turbine wheel but an increase in size on the compressor side. Ok for drag use but for road use the 16g would be the best if you wanted to upgrade your td04 setup for a bigger punch but with a well tuned ecu the lag may only be minimum increase.
Rory
Lifer
Look at speaking to someone in the know on turbo charger design and see what they come up with. All fine and well going for "xxxxx" turbo but seriously speak to the folk in the know. They will know an awfull lot more than folk on forum boards
Lag between a TD04 and the 05-16g is enough, and you wouldnt bring the lag down that much with tuning.. Remember its all about the efficiency of the pump behind it.
Lag between a TD04 and the 05-16g is enough, and you wouldnt bring the lag down that much with tuning.. Remember its all about the efficiency of the pump behind it.
pc18
North West England Area Rep.
use a nice shiney new turbo with billet wheels, ball bearing ect new turbo technology not dinosaur td04/5 ect.
the blouch turbos seem good they make the subaru billet turbos for scooby clinc which are consitantly coming out with great results and constantly updated and improving and trying new things with them as theres the market to drive them with there been so many scoobys.
the blouch turbos seem good they make the subaru billet turbos for scooby clinc which are consitantly coming out with great results and constantly updated and improving and trying new things with them as theres the market to drive them with there been so many scoobys.
Look at speaking to someone in the know on turbo charger design and see what they come up with. All fine and well going for "xxxxx" turbo but seriously speak to the folk in the know. They will know an awfull lot more than folk on forum boards
Lag between a TD04 and the 05-16g is enough, and you wouldnt bring the lag down that much with tuning.. Remember its all about the efficiency of the pump behind it.
I agree! There are some brainy people out there
And don't forget schwitzer, they are known to run at 2bar constantly!
If you have a forged set up with head work then I do not think it will be that bad because you can set the rev limit to 9k
Ted
Member +
If you have a forged set up with head work then I do not think it will be that bad because you can set the rev limit to 9k
for something like drag racing you can rev it to 9 if you like but there will still be a big hesitation between 1st and second as the turbo spools back up again. proper anti-lag will help but revs dont. or obviously nitrous.
i tried a few different turbos for drag racing and thought extra revs would have sorted the spool between gears but without nitrous theres still a flat spot
If you have a forged set up with head work then I do not think it will be that bad because you can set the rev limit to 9k
Even with a forged setup, a starlet will not make any useful power up past 7000rpm without serious head work etc so why rev to 9000?
To make power with a small engine you will need to set limiter to 9k so that you will get a spin when shifting to second and not bog.
And head work with a big turbo will benefit from a large turbo with a smile.
My set up used to make the speedo jump from 70km/h to 90km/h when shifting to 2nd at 8k, under that it would bog
And it is TOYOTA we are talking here about
sx_turbo
Lifer
http://www.full-race.com/articles/borgwarner-efr-turbos.html
people should really seriously consider looking into the borg warner EFR turbo's like in the link above, do a google search and go on borg warners website, i done a lot of research into these and they spool very quickly and provide high levels of boost etc, and they are very reasonable cost wise, just need a decent engine management system to go with it.
people should really seriously consider looking into the borg warner EFR turbo's like in the link above, do a google search and go on borg warners website, i done a lot of research into these and they spool very quickly and provide high levels of boost etc, and they are very reasonable cost wise, just need a decent engine management system to go with it.
I am sure a Garrett twin scrole will be very good...
Can someone please tell us what this map says? Clicky
Hope the link is the right one now... GT12... wtf??
Last edited:
Texx
Super Moderator
The compressor side of that turbo would be at it's absolute limit flowing 100HP, the exhaust side might be able to flow a little more at around 120HP before choking.