Would a T78 be a good option on a 20B?

Has anyone fitted one or seen it done? Would it be more responsive on a 20b?

Thanks....Chris

 

3200 rpms compared to the 4000 rpms.

 

That Full Boost? And at what?

 

Ported / non-ported?

I and I'm sure everyone in this 20b forum would love to have a thread to compare the relations between different turbos with spool up times of various boost settings vs. ported and non-ported engines. I'm sure most info would be purely speculative, but with some of the knowledgable folks in here, I bet some good ballpark figures could be thrown around (GO GIANTS!).

 

i looked at i think turbosmarts turbo calculator and they want a t04s/ 60-1 compressor and a 1.75 exhaust.

mike

 

That sounds really small to me. If i remember correctly the thought of twin T04s on a 20b was debated before.

 

1.75 is a Huge turbine Housing. I was using a 1.15 on my 13b and i thought that was big.

 

ok on my 13b non ported running 15 lbs.boost would start building at 3800-4k rpms.

on a 20b it would be 3200 rpms.ive spoke with m2 about when i was going to use my t78 i used to have on a 20b compared to a t51r.but instead i went with sumtin else.

 

yah it sounds really small to me, and they are in austrailia, those guys are supposed to have bigger turbos...

mike

 

general rule of thumb... anything that performs well on a 2rotor is going to be too small for a 20B. I think it was crispeed that stated a T-76 on a 20B was very similar to running a 60-1 on a 13b (flow to flow comparision...)

 

Agreed, T78 will be too small.&nbsp Try T88...


-Ted