<VV> TURBO PG

[Frank DuVal]

> On Mar 10, 2020, at 11:51 AM, tony underwood via VirtualVairs <virtualvairs at corvair.org> wrote:...  😉 
> 
> tony.. 
> 
> PS:  I know all about the distributor curves on turbo engines and how NOT to use the factory curve, PG or otherwise.  That curve is only "useful" ( and just barely ) when the bathtub chambered heads are used.  They are TERRIBLE heads that IMHO are good for little else besides recycling, or  for somebody who just must have a numbers-matching turbo engine.  The 95hp heads look alike, have much better combustion chambers, same compression, and the sodium exhaust valves drop right in and no, bronze guides are not necessary although if you got 'em use 'em.  Not difficult to make 95hp heads work on a turbo engine.  I used a STOCK 110hp distributor with a pressure retard, no detonation issues unless you go cheap and put regular in it.  It did everything better than the turbo distributor when used with the 95 heads.   This engine did have a gearbox and not a PG but I'd think it would still work better with a PG than the turbo ignition and top end parts.
> 

The 145 cubic inch turbo heads have combustion chambers like 80 or 95 heads, with the step. The 164 cu in Turbo started the open chamber business. 

Frank DuVal