turbo upgrade for 1GGTE

[6BOOST]

BLK1g, I'd say the stock cams will be fine for 7200rpm, with cam gears they make power easily to, or past that point anyway, and I've made 431rwhp on stock NA cams with my 1G and a GT30 turbo fitted with a .82 rear. If you wanted a compromise, I'd say just grind whatever fits, around the figures I have given should be fine, the stock 1G camshaft figures are 7.3-7.6mm of lift (on various cams) and 200-203 degrees duration @050". Despite common opinion, thre is very little difference between most of them, I've had 12 of them cam doctored and between the biggest and smallest was .3mm of lift and 3-4 degrees of duration.

I absolutely hate regrinds, and you'll get bugger all extra lift on them. Tighe cams, who does my camshafts, spray welds the lobes and builds them up, then grinds them back to the correct original base circle. You had better be careful about how your going to get shims and so forth to get the correct bucket clearance if they start taking material off the base circle with the regrind. They aren't that much cheaper anyway......


DQIKST, it depends entirely on your goals. You have to be realistic. Forget the 3071, unless you really are after lower power, as the 3076 won't be any laggier on a decent manifold anyway, and they share the same exhaust side, just the compressor wheel is 5mm bigger, it has a nice compressor map and can take more boost efficiently. If you want fast spool, get the .63, with this is a correctly designed exhaust manifold, a 3" exhaust with very minimal restriction, a turbo intake manifold with XF throttle, and some adjustable gears, you could get yourself around 250-260rwkw on 20-21psi pump fuel, with full boost at 3700-3900rpm. If you opt for the slightly larger .82 rear housing, I'd expect on the same engine 265-275rwkw on 22-23psi and full boost at 3900-4100rpm. And trust me when I say that don't just look at the numbers, I can assure you that in the car, THIS IS NOT LAGGY!!! In fact it would be quite scary in a light car and capable of really off mid to low 11's with little effort.

6BOOST

PS< whos that in your avatar?? Very nice.

[BLK1g-gte]

Sweet thanks for that for the info on the lift and duration. I needed it.
I really want to get more torque and response down low-midrange as stated before with the regrind.
For shims i was going to ask to purcase some of them of you or go to toyota and i am trying to get them not to take anything off the base circle. I'll talk to waggot cams again when they recive the cams.
Again thanks for the info.

Talked to Peter at Waggot and he said they they will take a few thou of the base circle but will keep it within the tolarance so i can use stock shims just with mix and matching the thickness.

[6BOOST]

Its impossible to increase the lift without taking anything off the base circle, thats the hwole point of a regrind, and where the extra lift comes from. If your changing it bugger all, I'd say your wasting your time, when I can get a set of welded and reground ones from tighe for bugger all extra. If thjey are just changing the side of the lobes, that a bad thing, as you want more duration and want to add material to the sides, this is what gives more power without increasing lag.

Unless they are welding the lobes, Idon't see how your getting much done at all.

Kyle.

[BLK1g-gte]

Yeah they are welding the lobes Kyle...The regrinding

[6BOOST]

Ah, well that should be sweet then

I'd ask for about [email protected] and 8.5mm of lift.

6BOOST

[BLK1g-gte]

Sweet thanks for the specs...This will be good all around yeah?

[Smokey228]

My mates been carrying on about power ported turbos. Stock ct12's are already so responsive, so im geussing its not gonna get much better, but it might lift the efficiency range a lil, and will lower temps quite a bit.

Are the temp levels that high that it would be worth spending the money on having done? Would there be any worth while gains? Apparently its dirt cheap, so im contemplating having it done...

As i dont really want big power, around 200-220rwkw is plenty for me. For now anyway Which would be the best suited twin turbo? Was thinking gsr turbos? Apparently quite small... Any other ideas? I kinda wanna keep it twin turbo...

Cheers,
Jase

[IN 05 NT]

My mates been carrying on about power ported turbos. Stock ct12's are already so responsive, so im geussing its not gonna get much better, but it might lift the efficiency range a lil, and will lower temps quite a bit.

Are the temp levels that high that it would be worth spending the money on having done? Would there be any worth while gains? Apparently its dirt cheap, so im contemplating having it done...

As i dont really want big power, around 200-220rwkw is plenty for me. For now anyway Which would be the best suited twin turbo? Was thinking gsr turbos? Apparently quite small... Any other ideas? I kinda wanna keep it twin turbo...

Cheers,
Jase

dude, 4 get the ghey twin idea, it will cost more, and be less responsive and more likely to fail/have probs,

with the gt3071r i have full bost round the 3700 mark with a 6 boost manifold, and 195 rwkw on only 12psi, with everythig else factory, (inj/afm/ecu)

plenty of power!, and would be a hell of alot more reliable and cheaper/easier in the long run...

you really gotta loose the torque/low end power idea of a 1g. it aint going to happen without severly reducing top end....

[rollsy]

hi guys,
is there any way to get new turbos for my 1ggte?
i want to stay twins but only option seems to be rebuilding them! (mine are buggered!)
thanks
rollsy

[Forcefed6]

As i dont really want big power, around 200-220rwkw is plenty for me. For now anyway Which would be the best suited twin turbo? Was thinking gsr turbos? Apparently quite small... Any other ideas? I kinda wanna keep it twin turbo...

Having been someone that has made a custom twin turbo setup for the 1G, I strongly recommend only using a single turbo setup.

I use a twin T25g (ex sr20) turbo setup. It makes good power, and feel strong on the road, but on the dyno it shows to be laggy.

I have also had some experience with a twin setup using GTR turbos. This also made good power, and had much better response than the larger T25g's.

In order to make that sort of power, you will need large amount of boost pressure with any twin setup, as mine runs at 20psi. The GTR turbo only have ceremic turbine wheels, and will fail quickly at this sort of boost level.

What sort of car id this going into? When doing a twin setup, you need 2 of everything, and you soon start running out of room to fit it all in. On top of this, that also means the cost of 2 of everything.

When I get my car running again, I will be changing the setup I have to a single T04 setup.

Good luck with your desicion either way.

[love ke70]

are you still running that crazy setup jamie.
i thought ud got rid of it long before, dont talk it down too much, no one will want to buy it then, no matter how cool it looks

[Forcefed6]

Yes I will still be running this setup... I would love to run an 11 with it before it gets removed and sold off.

[IN 05 NT]

Yes I will still be running this setup... I would love to run an 11 with it before it gets removed and sold off.

how the auto coming?