RV engine question

[verboten1 at gmail.com (Verboten1)]

the 7.8:1 was on a bored and stroked 1.7 with custom low compression
pistons.
The combination of the piston and combustion chamber (and stroke?) effects
the compression ratio.

you can boot a 10:1 engine with low boost, the higher the compression ratio,
the better the trhottle response will be off boost

On 8/24/07, Neptuno <neptunonc@xxxxxxxxx> wrote:
>
>  Jason, did you get those numbers on an RV engine? And if so how did you
> lower the compression?
>
> 1) I am missing a piece of the information and conpletly showing my
> ignorance?
> 2) The pistons on any engine determine the compression ratio?
> 3) The RV engine is a high compression engine?
> 4) How to make this $50 engine become a boosted engine?
> 5) I should buy it and wait to transplant it to a Digifant Vanagon?
>
> Thanks,
> El T
>
> *Verboten1 <verboten1@xxxxxxxxx>* wrote:
>
> with 15PSI on CIS i was running a 7.8:1 compression ratio
>
> the RV IIRC is 10:1, and the pistons are different to get the higher
> compression ration
>
>
> On 8/24/07, Neptuno <neptunonc@xxxxxxxxx> wrote:
> >
> > So chenging the heads to a Solid lifeter CIS head from a JH block will
> > not drop the compression?..... So In the long wrong the issues is that a
> > lower compression ratio is needed for boost. And that this engine may not be
> > a good candidate? kinda of a pickle that only cost $50 bucks.
> >
> > EL T
> >
> > Timbo <timjmcconnell@xxxxxxxxx> wrote:
> > You should be good with that! Try to get a knock sensing ignition for
> > it though- the reason it has more power is because there's more
> > compression.
> >
> > On 8/23/07, Neptuno wrote:
> > > Hello list,
> > >
> > > I just found an RV engine for $50. Seems like it is a good runner with
> > low milage. It is digifant, So what just swap the head from the JH that has
> > been sitting in the garage for a year and I should be able to run the CIS on
> > it without trouble? I think that is the answer for stock 100hp. Reasurance
> > is welcome!
> > >
> > > Thank you,
> > > Tony
> > >
> > >
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