Re: 13-1/2 to 1 compression ...on the street?

Steve W. wrote:
> N8N wrote:
> 
>> On Apr 30, 4:24 pm, "Steve W." <csr684...@[EMAIL PROTECTED]
> wrote:
>>
>>> John Kunkel wrote:
>>>
>>>> "wstiefer" <wstie...@[EMAIL PROTECTED]
> wrote in message
>>>> news:Nl0Sj.12289$2g1.2583@[EMAIL PROTECTED]
>>>> Alcohol
>>>> My thought, too. If the CR is actually that high I can't see it ever 
>>>> running
>>>> on pump gas regardless of the heads, cam, etc.
>>>
>>> Why not? NASCAR runs 12.5:1 on 98 octane using iron heads. They ran
13:1
>>> on the old 105 octane leaded fuel. I have run 13:1 on pump gas with
>>> aluminum heads on a 427 with a set of Rhodes lifters to drop the cam
>>> down some. No problems at all.
>>>
>>> -- 
>>> Steve W.
>>
>>
>> I would think the Rhodes lifters would actually hurt, not help -
>> they'll improve idle quality but at the cost of increased low RPM
>> cylinder pressures.  or am I thinkin' wrong?
>>
>> I will say that at anything over 10.x:1 you probably need to have
>> someone GOOD (not me!) tune the engine to avoid an inadvertent
>> detonation incident.
>>
>> nate
>>
>> (currently running 10.25:1 with iron heads - stock 63-64 spec
>> Studebaker R1 engine...)
> 
> 
> No real pressure increase. You just need to play with the bleed rate 
> some. Mine was set up to "hide" the real power of that engine. The only 
> problem I ever had with it was that I kept putting my foot through the 
> firewall....
> 
> Tuning of a true HP engine is an art. Not something you get from books 
> or online.
> 

OK, so you tuned down the rumpity idle some... but how do you tune out 
that "sharp" exhaust sound that you only get with high compression or a 
blower?

nate

(appreciates stealth performance)

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