I've seen it on alot of mid 6 second twin turbo cars. However, is this hard on the compressor wheel or the turbo at all?

And yes, I do understand the many reasons behind injecting fuel before the turbo. LOL I just don't know how long a turbo will last with liquid attacking it's rotating parts with it spinning at many thousands of rpms. I suppose that if this particular liquid (fuel in this case) were slightly atomized, then maybe it won't affect the life-span of a turbo. I'm just not sure though.

Can someone who has experience with pre-turbo fuel supply clarify this for me?

Thanks!

 

Do you mean fuel or water/ meth injection? Very interesting, Id like to know as well.

 

Actually, it was after the turbo. However, I would still like to know if liquid going into the turbo would have an affect on its life span? I'm sure that if the liquid was in an atomized form that it wouldn't hurt the turbo, but what about liquids that are in the form of larger than atomized droplets? I'm almost sure that droplets couldn't be healthy for a turbo.


Modified by integrawow at 4:59 PM 5/12/2007

 

Turbo Formula 1 cars ran injectors before the turbo for a number of years, and some older turbo cars used a draw through carb from the factory.

 

Thanks!

 

Well for one, silicone is not known to hold up to fuel like synthetic rubber will, so you'd have to run some very pricey reinforced dupont viton rubber couplers. The problem there is that even synthetic rubber doesn't like temps over 220F, which is lower than common turbo outlet temps. For an F1 team, a handful of easy to replace parts that cost $30/per are nothing when it comes to absolute performance. When you consider inconel parts & entire high-PR turbos (when they ran them) disposable, a simple coupler is nothing. Now that I think of it, they probably used something like those wiggins clamps.

The other thing to note is that the formula cars that were doing it were made to sustain 200+ mph, not just cover a 1/4 mile in a few seconds. They did not have to accellerate often, meaning response (from high vacuum to high boost) and low-mid AFR's could be sacraficed for maxamizing a very small part of the powerband.

If you plan to run a constant 150mph+ on an oval, then maybe you could consider this. Otherwise, I'd surmise traditional multi-port fuel injection is what you should stick to.