Very funny, yet very sad depending on your point of view. I was looking up a turbo kit for a friend of mine. And I'm looking at this picture and i start bitching, "this damn thing says its a turbo kit, i dont see no ******* turbo".

My wife who knows very little about cars, walks up points at the screen and says, "Is this it?".

I look at what shes pointing at and just to save face say, "No its not."

This turbo was like the size of a soda can. What are you gonna do with that? Use it to knock out your competition?

 

I don't get it? Supras and Skylines and such use turbos just as big if not bigger than ours.

 

Ahhh yes, but I was looking up a turbo for an eclipse.

 

They have some mighty big turbos as well.

 

13B's tend to spool up turbos faster than 3.0L supras do. A 13B can reach full boost by around 4000RPM with a T78 but on a Supra a T78 isn't really considered streetable since its fullboost like 4600RPM I think.

 

There is no such thing as a "rotary turbo".
All turbos are decendent of units designed for diesel applications.


-Ted

 

hey, rolls royce made a diesel rotary i believe.

 

true they r all from the diesel,some take longer to spool than others and have diff top ends as far as power wise

 

i read a comparison on small engine vs. diesel turbos and they said the diesel turbos spooled up really slow...

i was all hey, i hit 30+ psi @ 1750 rpm in the detroit 6v92 ..... of course it's an 8 liter, 2-stroke, supercharged AND turbocharged model....LOL

 

uhm just to clarify things surf... you do know that the turbo itself has no difference with rotary and piston. its a turbo... a turbo is a turbo. i can grab a turbo off a diesel and with proper piping and a little elbow grease... boost my 7 with that. and after... boost my integra with it. Look for turbo's that have larger AR plain out rather than looking at it as turbos for rotaries only and piston only.

 

you cant take the turbo off of a desil and use it on a gas engine.... they are differnt.. a desil turbo uses some of the oil that is in the feul to lubercate the turbo and in a gas motor it would not get this lubercation... unless you pre-mix the feul..
that was explined to me from a desil specialist when i, myself tried this..

 

I believe that the original post is referring to what Icemastr posted about. Yes, we use large turbos on the rotary relative to piston engines that have the same flow (i.e. 2.6L piston engines). Note also that we tend to run less boost, use more air and fuel to make equivalent power, and have high redlines on rotaries. Rotaries also seem to be good at spooling turbos. I think those are some of the reasons that we tend to use large turbos in rotary applications.

I don't think tigosurf was thinking that there are special turbos designed just for rotaries.

Ted's point is that most (or all) turbos were designed for, or at least inherited some design elements from, diesel engine applications.

Of course you can use a "diesel" turbo on a rotary or any gas car. That lubrication issue is nonsense.

-Max

 

Rotaries ability to spool a turbo similiar to a 3.0 piston engine is negated by there inefficiency.

EX. A built 2.0 motor, let's use a 4g63, can push over 550rwhp with a T-61 sized turbo. A rotary would never come close to that number.

EX. A supra or a Dsm motor will put out over 700rwhp with a T-78, but a Rotary will not even hit 600rwhp.

Because most rotaries run under 17psi on pump and few ever run over 20psi to make decent power they have to use very big turbos to make the power. Since built piston motros can all handle 30psi, with all the supportin upgrades, they usually max out a turbo.

I'm not saying a Rotary can't do that, but most won't push the envelope near that far for fear of failure.