.70AR TO4s vs. .60AR T04e

*pics taken from cheapturbo.com*

generally what is the behaviour of the T04s vs. the T04e. for instance how does the housing change the characteristics of the wheel? is there a hp level where running either housing is better or more efficient? has anyone ran both housings on the same turbo, if so, can u tell us how it felt and how it affected the powerband?




[Modified by DIRep, 5:18 PM 2/24/2003]

 

good question

Im using the 60-1 hifi and im curious to know as well...I emailed cheapturbo.com and they say that the t04e housing is 5-10% more efficient than the t04s

 

anyone?

 

you might want to give cheap turbo a call, I have talked to them a few times on the phone and they seem to be very knowledgeable and friendly so they may be able to better tell you what will work best with your set up

 

well im looking for more of a general explanation between the two housings. not nessacarily for my specific set up. If cheapturbodotcom explained it here then we all could learn. hopefully he will see this post and lay down some knowledge.

from what ive read, the T04s simply flows more volume of air, which is what we want in most cases. and the T04e housing is generally chosen when space is an issue. but i know there is alot more to it.

 

I'm assuming that you are talking about the same compressor wheel (60-1) and just looking strictly at the housings?

Sonny

 

that is one of the wheels i have seen the E and the S housings both used for. but there are quite a few others. especially with precision offering the S housings at no extra charge, u can put an S housing on pretty much any wheel u want. allowing many combinations.

basically im trying to figure out how the housing effects the compressor maps with each wheel. from that, i can get a good guess on how it will behave on different motors and hopefully be able to pick the best combination for what I want to accomplish.

 

Good post DiRep I have been wondering the same thing. Lets pick one turbo (60-1 or sc61) and go from there. Will the S housing just move the compressor map over a little or change the whole map? How will spool up differ and at which boost level will one be better than the other?

 

They....PT charged me and extra 100$ for a to4s on a PT61.....if it woulda been a e housing woulda been the advertised price of 775

 

i have the sc61 with a T04S housing on it. When i got it it had a T04e housing and i sent it back to them and they put a T04S housing on it i was alot more happier with the S housing. I know with the S housing it is going to flow alot more then with the E housing.

 

I think with the higher AR of the S housing, it will flow a higher volume of air but less velocity. But the E housing with a smaller .60 AR housing, it will fill up faster and flow at a higher velocity but not as move as much volume as the S housing. So i think it just comes down to where you want to make your power. I think the S housing will make more top end since it flows a higher volume of air, while the E housing may make more low end torque since it will flow at a higher velocity due to the smaller housing. I've been staring at accounting formulas all night, so i may just be talking out my *** at this point

 

basically the to4s housing would be seen to flow a 10% larger volume at the same pressure as the to4e housing.

but on the other side, the to4e housing is seen to be 5-10% more efficient.

in most cases the volume of air will far outweigh the effects of the minimally lower efficiency.

definitly a good post. sorry we havent been able to post on here as often, we've just been slammed lately. some new turbochargers in the works.. t3/t6???

 

Thanks ken..i just recieve the turbo today..Look great.if anyone looking to get turbos get it at cheapturbo.com great price,great guy ..keep up the good work ken.

Alex

 

will that flared inlet on that t04s do anything to the intake air in the turbo? more velocity because of reduced area?

 

im a lil lost here if i was to take the comp housing off of my aireasarch/garret T04e i could put a T04s housing on it??? or do i have to have my wheel changed ??? o and my A/R is .60 on the cold and .58 on the hot.

 

yes, u can put a T04s housing on it or even a T04b. u just have to have the housing machined out to match the wheel.

 

so is a better turbo whit more flow or better efficiency?which one will create more power ?
ex: at 10 psi wil a t04e(more efficiency) make more power then a t04s that make 10%more flow?
what mean "more efficient" exacly?
thx for reply