[FC] Re;120 hp engine

[Steven R. Marti]

When I think of squish, I think more of the quench area in the combustion
chamber, not simply compression ratio.  Seems many have had success
increasing the squish (lower piston to quench area clearance) to lower the
octane requirement for a given compression ratio.  Might not be worth it
just to save gas money, but if your building an engine anyway....

Anyone want to relate actual success stories or failures?

Steve Marti

-----Original Message-----
From: corvanatics-bounces at corvair.org
[mailto:corvanatics-bounces at corvair.org] On Behalf Of Merv Krull
Sent: Friday, May 05, 2006 6:49 PM
To: corvanatics at corvair.org
Subject: Fw: [FC] Re;120 hp engine


----- Original Message ----- 
From: "Merv Krull" <krupross at sunwave.net>
To: "Charles Bartlett" <cber1944 at yahoo.com>
Sent: Thursday, May 04, 2006 3:15 PM
Subject: Re: [FC] Re;120 hp engine


> Hardened valve seats were necessary in the aluminum air cooled heads to 
> deal with the heat in a Corvair. Waterpumpers had to change to hardened 
> seats to deal with unleaded gas. Doubtful it has anything to do with 
> octane rating.
> Lower compression, something called squish (?), tad cooler sparkplugs 
> maybe, or just use the higher octane gas (compared to the cost of all the 
> work to change things)
> my two cents
> Merv Krull
> Salmon Arm, BC
>
> ----- Original Message ----- 
> From: "Charles Bartlett" <cber1944 at yahoo.com>
> To: "Corvanatics Email" <corvanatics at corvair.org>
> Sent: Thursday, May 04, 2006 2:20 PM
> Subject: [FC] Re;120 hp engine
>
>
>> Hi everyone;
>>        I was talking to a guy that use to be a mechanic at a GM Chevy 
>> Dealership  Service Garage for a number of years and the question I had 
>> was how can I wean my Greenbrier from 93% to 94 % octain to just regular 
>> gas and his respone was it is hard to change over a 140 or 160 hp to just

>> reg but a120 hp dose not have the harden valves and it can run on reg 
>> gas.
>>        What are you all think about this is it bunk or is he right, need 
>> your input!
>>  email me at cber1944 at yahoo.com or call me 419-782-5404.
>>   Thanks
>>  Charles B.
>>
>>
>> ---------------------------------
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> 

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