3tgte turbo limits

**metcap** · 01-06-2006, 11:35 PM

Looking for some info on what boost levels would a stock 3tgte CT20 turbo put out before burning out, thanx.

tkm

**TA22 GT** · 01-06-2006, 11:55 PM

For a stock CT20 without intercooler I reckon about 12psi is the limit before you're just generating heat. With intercooler and bigger exhaust maybe around 16psi.

Cheers,
Simon

**metcap** · 03-06-2006, 01:34 AM

Originally Posted by TA22 GT

For a stock CT20 without intercooler I reckon about 12psi is the limit before you're just generating heat. With intercooler and bigger exhaust maybe around 16psi.

Cheers,
Simon

simon, thanx for the reply.. and btw miss you on the yahoo classic celica list. Yeah thats good news, I'm not looking for anything more than the 12psi limit. As I remember you're about 14psi right?, so what size an intercooler are you on and what air temps are you getting?

tkm

**Toobs** · 03-06-2006, 02:08 AM

A stock 3TGTE block and head should be good for about 12-14PSI with an IC.
The poor little CT20 starts running out of steam above about 8-10PSI though... anything above that is really getting out of it's efficiency.

**TA22 GT** · 03-06-2006, 10:51 AM

Yeah, I now have a Garrett GT25 running 14psi. The air temp to the engine is around 35 C, I have a modified intercooler from an EVO 5.

Cheers,
Simon

**metcap** · 03-06-2006, 11:58 PM

a tdo4 dun look much bigger than the ct20, what makes it any better? looks to have much more compressor blades though. Does the o4 makes more boost than a 20?

tkm

**LeeRoy** · 05-06-2006, 03:19 AM

Turbos aren't based on the amount of boost they can make as this would be an unefficient way of measuring as on a barina a turbo may make huge boost if unhindered by a wastegate, but on a larger engine which eats more air it won't make as much boost. I'm not too sure what they use to measure turbos other than a/r ratio and trim.

On a side note how much power have people got out of 3t's with what mod's. I searched but couldn't find anything other than on Simon's site.

Thanks in advance - LeeRoy