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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