Blow thru, thats the word i was looking for :)
Yeh EFI, would be nice but this is for a A12 motor and spending as little $$$ as
possible is the idea.. I have put off installing a turbo on my Astra (N12 E15
engine) for exactly that reason, because im trying to nut out programming an
engine mgmt system for the E15ET manifold I have..
Still considering a 120y with E15ET engine, that should be an interesting
project..
- Julian
Tom Richardson wrote:
> Julian,
>
> One word: Intercooling
>
> With a blow through turbo (like zac's setup) you can cool the air charge
> before it mixes with fuel in the carby, with a suck through setup (like
> paddy's setup) you would have to cool a fuel/air charge- not a great idea!
> There are plenty of suck through turbo cars around though so they obviously
> work, one advantage is that you get a nicely mixed fuel/air charge I
> suppose.
>
> But yea, suck through turbo's are much easier to do, because you just treat
> the carby(s) like on a thirsty N/A motor. No pressurised fuel bowls, no
> high pressure fuel (you need boost pressure + ~5psi available for blow
> through) so you can use the standard pump and lines.
>
> Then again, intercooling may not be such a big draw card if you only want to
> run low boost and don't have problems with detonation. As always, depends
> on how much power you're chasing
>
> - Tom
>
> PS, Remember (to quote Bill Kenyon from the Bluebirds list) that there are
> two kinds of 510's, those that have EFI, and those that need it :)
>
> ----- Original Message -----
> From: "Julian" <[EMAIL PROTECTED]>
> To: "OZDAT" <[EMAIL PROTECTED]>
> Sent: Monday, February 19, 2001 11:22 AM
> Subject: Suck thru vs Draw thru turbos
>
> > I was wondering about the advantages and disavantages of running these
> > different types of setup.
> >
> > Firstly i understand a suck thru setup is similar to Paddy's L16 where
> > the carb is before the turbo. Draw thru is after the turbo? right?
> >
> > Anyway as i can see suck thru is easier to setup, you could use existing
> > fuel regulators and pumps (as long as they supply the greater demand for
> > fuel). The thing im curious with is running fuel through the hot
> > turbo. I take it this is ok because obviously its been done before and
> > proved to work but i still sceptical
> >
> > With Draw thru you might not be able to use the existing carby, and if
> > you can it raises some sealing problems with the higher pressure fuel
> > you need to run to overcome the boost pressure. This also needs a high
> > pressure fuel pump and rising regulator plus a surge tank.
> >
> > As i see it suck thru is heaps easier and cheaper... so what is the
> > disadvantage im not seeing??
> >
> > thanks
> > - Julian
> >
>
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