Turbo; JH or PL?

[julie at menloparkrandd.com (julie@menloparkrandd.com)]

It seems to me that porting and polishing would be useful with either FI or NA engines. 8 or 16.
By increasing the laminar flow and decreasing the turbulance of any air flow would be beneficial to power and efficency.

>-----Original Message-----
>From: LEF [mailto:rocco16@sbcglobal.net]
>Sent: Friday, January 5, 2007 08:21 PM
>To: 'Dan Bubb', scirocco-l@scirocco.org
>Subject: Re: Turbo; JH or PL?
>
>Of course 8V's are worth turbo-ing. You can get insane amounts of power out of one with lots of boost. What may be naive is assuming that you need to go the normally aspirated route of cams, porting, free-flow intake, free-flow exhaust (as Dan said) to make a turbocharged engine produce power. You don't.
>1) The purpose of all those normal (above) methods of increasing HP is to increase FLOW, right? With supercharging (this includes turbo-supercharging), the issue of flow is taken care of by, (drumroll, please)............boost. Want more flow? Turn up the boost. Of course, if you don't make allowance in fuel, compression, ignition, etc., all that boost-induced (I like the sound of that; "boost-induced"...) power might only be under your foot for a few seconds, but it will be there. That's why I said you can boost an A1 engine to make power beyond its ability to live.
>2) By the way; free-flow exhaust on a turbo car??? :) The turbocharger itself is a significant flow restriction...if it weren't, there wouldn't be any work done by the unit. A turbocharger is about as close to free torque as you can get, but it ain't completely free. As some of you know, most turbo exhaust manifolds are designed for anything but free flow. They don't have to be; the power comes from........boost (not free flowing intake and exhaust systems).
>3) Right, Dan, the engine (JH or PL) doesn't matter. Anything that the extra two valves will get you...and more...can be had with boost. 
>4) I don't understand what you are trying to say in your last sentence. If you care to re-phrase it, I'd be happy to try to respond.
>
>larry
>sandiego16v
> ----- Original Message ----- 
> From: Dan Bubb 
> To: LEF ; scirocco-l@scirocco.org 
> Sent: Thursday, January 04, 2007 4:46 AM
> Subject: Re: Turbo and 16V heads; 9A or PL?
>
>
> OK Larry, I don't get it.
> What's your point?
> 8V's aren't worth turboing?
> Or is this just another one word incomprehensible jab in typical Larry style?
> Could this possibly be yet ANOTHER of those pathetic 16V's are so much better than 8V arguments?
>
> If I'm reading from your book Larry then the engine doesn't matter cause all I need to do is "turn up the boost".
> I do have to admit I'm curious about how naive you were to participate in building your son's 8V turbo.
> Dan
>
>
> From: "LEF" <rocco16@sbcglobal.net>
> Sent: Wednesday, January 03, 2007 10:11 PM
> Subject: Re: Turbo and 16V heads; 9A or PL?
>
>
> Naive? You ever build a turbo 8V, Dan? That's naive.
>
> larry
> sandiego16v
> OTOH, it's naive to say turn up the boost. There is a limit to the amount of boost you can run with a given octane fuel.
> And "the usual power increasing tricks are suddenly moot"....??? Really? Cams, P & P, free flow intake, free flow exhaust are all irrelevant? Just turn up the boost??
> I'm sorry, but that's just too naive.
> Dan
>
>
>
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