[DML] Re: Port and Polish

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

IMHO porting and polishing will not get you very much on the PRV. If
you do any serious porting you will reduce the veolcity of the
air-fuel charge which is not a good thing. Polishing can always help
but the insides of the passages are nowhere near as rough as on
american cars so you are not going to gain much by polishing. Doing
the intake would be difficult. There is some merit to keeping the
surfaces rough. Many are of the opinion that it causes turbulance
which helps keep the air-fuel mixture mixed well. Of course, if you do
the intake you have to do something for the exhaust or you really do
not see much improvement. The biggest bang for the buck is just
getting a better flowing exhaust system, never mind the porting and
polishing. Whatever you do, do not expect a whole lot. Without
extensive modifacations it will be difficult to see any significant
improvement. 
 Mating a different motor to the trans will, in most cases, require a
custom built bell housing.
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, "denverdelorean" <denverdelorean@xxxx>
wrote:
> Hi all.   I was just wondering if anyone on the list has ported and 
> polished thier cylinder heads.  Were the results favorable.  Is this 
> recommended for the prv?  Are there any performance camshafts 
> available from any of the vendors?  I would like to begin tuning up my 
> delorean and I want a little more than high power ignition, and fre 
> flow exhaust can provide.  
> 
> Also, just as a curiosity, does any one know the process for mating 
> something like a chevy 350 or the cadillac engine to the delorean 
> transmission?
> 
> Thanks.
> 
> Matt 16076
> DenverDeLorean






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