2tgte and 3tgte...how much power have they got???

[turbo ke20]

well im just curious because i got my ke20 with a 2tgteu dynoed on wednesday and it only made 123.6 hp or (92.2kw) at the treads. this was at 5700rpm and 7psi.

im not happy with how it goes.

its got all the good external goodies on it but stock internals.

i was hoping for more like 110 to 120 kw atw am i dreaming???

im prepared to increse the boost to 10psi maybe 12 but i think thats pushing it.

what kind of effect would the extra 3 to 5 psi have??

[Rinmax]

Well I havn't had a turbo 2t engine, but my hybrid 3T/2TG with carbs did 110hp at the wheels, so I think you should be getting more than that.

As for extra boost, make sure everything is right first. Don't want to go breaking stuff.

[RiceburnaGTV]

Fuck I love your car man,its bloody top shelf!

Anyhoo,I think thats a pretty good figure, seeing I just got my 3TGTE dynod with CT26,2.5 exhaust and 14psi and only oulled 130kw so considering your running half asmuch boost with less displacement its a pretty good figure.

My advice would be to get some forgies and wind up the boost to 20psi...im sure I have heard somewhere that forgies out of another engine will fit? Maybe 4agze? cant remember sorry.

Cheers
Nath

[jfallen]

5700, hell give it some more fuel and let it rev.

Are you running a cooler? what turbo, injector size? 7Psi is pretty tame by all accounts.

I jigged up my spreed sheet to resemble your current set up (1589cc, 5700rpm, 7psi and ~110kw.) With 7000RPM and 12psi: whit that you'd be looking to flow around 23lbs/min (306CFM or 0.137m^3/s) which should give you ~154kw at the motor. Some 400cc injectors would be a good investment as well.

Cheers
Jordan

Note: with current power figures you'd have better invested in a silver top 20V setup

[beatle]

damo from OST got just shy of 120hp atw on Xspeeds dyno in march
that was a 3t-gte

[oldcorollas]

well im just curious because i got my ke20 with a 2tgteu dynoed on wednesday and it only made 123.6 hp or (92.2kw) at the treads. this was at 5700rpm and 7psi.

1.6L, 7psi (if 100% VE) would be abround 240Nm, and at 5700rpm = 145kw at engine..

dumb that down to say, 90% VE = 130kw, and with what? 15-25% loss (depending on dyno etc) 100-110kw so it is a bit low...

before winding up boost, work out why it is not making to grade now..
fuel? timing? some inefficiencey in the manifolds/heads etc? turbo efficiency range? b(nothing looks whacky from your pics)
could it just be tuning preventing it? and why only 5700rpm?

edit, what is midrange like? dyno sheet?

[jfallen]

don't forget there are other losses in a turbo system (mainly the intercooler,) edited my post after doing some sums.

Cheers Jordan

P.S: proabably worth sticking a comp tester in it jsut to make sure. Current power seems about right though.

[oldcorollas]

http://forums.toymods.org.au/index.p...t=0#msg_125103

[turbo ke20]

well ive already got 420cc injectors with the adjustable fuel reg.
turbo is a IHI TDO4 with good size intercooler
the rev limiter was originally at 7200rpm when N/A but i dropped it to 6000rpm untill i got it tuned for the turbo setup
the tuner just left it at 6000 and went for a smooth curve instead of trying to squeeze every last bit of power out of the engine.
i just wasnt sure if the motor will like being pushed to 7000rpm with 10-12psi in it.
i think i might just wind up the boost and get it re tuned and hope for the best.
i hope with the increase of power i hope its good for a lmid to low 14 1/4 mile pass

thanks for the feedback so far

justin

[jfallen]

best investment would be some stiffer valve springs (if you're concerned.)

my 2TG was maggoted when I bought it (no compression in cylinder 2) and was still pulling at 8500. 5700 is very conservative.

there are a few varities of the TD04 but even the smallest will be able to meet 12 PSI on your motor (0.13m^3/s.) If you've got anyting but the smallest you can even push for more.

Cheers
Jordan

[turbo ke20]

8500rpm thats insane.
the thing is roaring at 6000 i cant imagine the sound at 7500 and above

[TheToyman75]

Turbo KE20,

Some questions - Which 2TGEU are you using ? What sort of Dyno was it on, Where is your Dyno Graph ??

A couple of quick things for reference. 92rwkw is GOOD for what you have at 7psi.

Look over the past Dyno day threads, A Stock 3T-GTE will adverage around the figure you have there. Scrotes turned 98kw from memory, the white one at work turns just over 100 but at 10PSI and as Nathan has posted his makes 130kw at 14PSI. The old 8 valve engines are only so efficient.

Yours is only a 1.6 so compared to the 1.8's above its right on the money. Especially with such a low Rev limit ? I need to see your graph but that limit seems far to low.

The TD04 at 7PSI will also be well under where it can efficiently make power. You have the 420cc injectors so up the boost and pull the string. Give 12-14PSi a whirl. With a GOOD tune the cast pistons will be fine. (3T-GTE's have stock cast pistons too remember) I can't remember what I got out of the last TO4 powered 3T-GTE we did at work just before October fest but it was mid 140's - 150's. The T04 is really a bit big for a low boost application.

Once you have that done get him to overlay both graphs so you can see the real gains.

Don't be disapointed with your results. Your right where you should be with a stack of potential right there already in your engine bay.

Oh and as for roaring at 6000 rpm, they are a noisy engine but will happily swing well past 6000 with the right cams in them. Valve springs as suggested above will be a VERY good idea for yours. Performance springs is a Toymods Sponsor. There details are on the sponsors page. Speak to Allan and you will get them for wholesale pricing. You want the RR4 springs. These really are not optional and while time consuming they are not difficult for a workshop to change. (or you if you have the right tools and don't mind redoing your cam timing)

[jfallen]

8500rpm thats insane.

yeah sounded tuff as nuts, but they are a rattly motor. very mechanical, and with the carbies

if you're looking for some bigger cams, first check what you have, you could possibly have 256's with 10.2mm of lift. If you've got the more likley 240deg units with ~9mm that came on most EFi motors, the older carbie cams could be an execellent cheap upgrade if you can find a set.

Cheers
Jordan

[turbo ke20]

thanks for the replies guys.
ill put up the dyno sheet tonight.
about my engine it is a wierd one.
where the cast number is on the head it is blank
its like that from factory so it hasnt been shaved off or anything.
what restrictions would a cat converter have. i might take it off for my next tune with 10 psi maybe 12 if it is pinging to much.
well at least im not behind for the setup im running it would just be good to get a bit more.

justin

[Turdinator]

thanks for the replies guys.
ill put up the dyno sheet tonight.
about my engine it is a wierd one.
where the cast number is on the head it is blank
its like that from factory so it hasnt been shaved off or anything.
what restrictions would a cat converter have. i might take it off for my next tune with 10 psi maybe 12 if it is pinging to much.
well at least im not behind for the setup im running it would just be good to get a bit more.

justin

The lack of numbers used to confuse me aswell. It is apparently the last incarnation of the 2TG head. It was on the 2TGUEs.

I would have thought 92rwkw was on the low side for a turbo but TheToyman75 would know better so i shant contradict him. But lets just say my warmish non-turbo 3/2TG hybrid put out 90rwkw (on carbys aswell.)

Different dyno, different day, not really comparable but still...