Point takin....
and having graduated from the been there and done that school of hard
knocks and done bit of real time stuff now.... I dont want to tell anyone
how to tune, but the power increase's above 24 degrees are real weather its
on a 408 or a 360 in this configuration
At the dyno I stayed conservative on the timing and I can safely run 91 on
the street and hammer it, I agree with you on the tuning
I had a bunch of guys tell me that they tune till it pings and back
off...hmmm well we started conservative and ran with what made power..!
> From: "Bob Mankin" <bob@coralfarms.com>
> Reply-To: dakota-truck@dakota-truck.net
> Date: Sun, 20 Jul 2003 10:17:37 -0700
> To: <dakota-truck@dakota-truck.net>
> Subject: RE: DML: RE: Novi-2000 Dyno #'s
>
>
> Scott, the race fuel, dry-iced I/C or water/alk injection are directed at
> detonation control and once you have enough of any or all three you reach a
> point of diminishing returns.
>
> What I was trying to get at with Dave is the idea that you don't just stuff
> maximum timing into a S/C motor until you reach the point of detonation.
> Certainly using a stock PCM or even worse, a MP PCM with total timing of 32
> degrees advance or better is not what you want in a blown app. And in his
> case we're talking pump gas making the ability to take lots of timing
> advance that much riskier.
>
> In your 408 setup with the race gas etc. you might get a little more than
> the 24-26 that I quoted earlier, but even if you could get 32 degrees total
> without detonating, it's not likely that you would want to. You'll probably
> be peaking that pressure sooner than you want creating "negative torque".
>
> Once the motor is dialed in for A/F and detonation is under control, the
> only tweak you want to make for spark advance is "tune for max torque"
> whereas some people are think it's OK to just dial more in until just before
> it detonates. That's not the right way to go about it.
>
> Bob
>
>> -----Original Message-----
>> From: owner-dakota-truck@bent.twistedbits.net
>> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Scott
>> Quaranta
>> Sent: Sunday, July 20, 2003 8:43 AM
>> To: dakota-truck@dakota-truck.net
>> Subject: Re: DML: RE: Novi-2000 Dyno #'s
>>
>>
>>
>> Bob....right again but
>>
>> there is a "lot" more than 24 degrees available before that
>> happens...with
>> a cooler charge or better gas..or a little aclky injection
>>
>>
>>
>>> From: "Bob Mankin" <bob@coralfarms.com>
>>> Reply-To: dakota-truck@dakota-truck.net
>>> Date: Sun, 20 Jul 2003 01:27:52 -0700
>>> To: <dakota-truck@dakota-truck.net>
>>> Subject: RE: DML: RE: Novi-2000 Dyno #'s
>>>
>>>
>>> If anything with an intercooler you reduce the need for
>> timing advance.
>>>
>>> Cooler/denser charge = faster flame travel = less need for advance
>>>
>>> Keep trying to stuff more timing in there and you start
>> working against the
>>> piston at the TDC/power stroke area.
>>>
>>> Bob
>>>
>>>> -----Original Message-----
>>>> From: owner-dakota-truck@bent.twistedbits.net
>>>> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf
>> Of Bernd D.
>>>> Ratsch
>>>> Sent: Saturday, July 19, 2003 9:29 PM
>>>> To: dakota-truck@dakota-truck.net
>>>> Subject: RE: DML: RE: Novi-2000 Dyno #'s
>>>>
>>>>
>>>>
>>>> To a point...but agree with ya on that one.
>>>>
>>>> -----Original Message-----
>>>> From: owner-dakota-truck@bent.twistedbits.net
>>>> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Scott
>>>> Quaranta
>>>> Sent: Saturday, July 19, 2003 8:17 PM
>>>> To: dakota-truck@dakota-truck.net
>>>> Subject: Re: DML: RE: Novi-2000 Dyno #'s
>>>>
>>>>
>>>>
>>>> Not With a air to water intercooler.....!
>>>>
>>>>> From: "Bob Mankin" <bob@coralfarms.com>
>>>>> Reply-To: dakota-truck@dakota-truck.net
>>>>> Date: Sat, 19 Jul 2003 17:41:00 -0700
>>>>> To: <dakota-truck@dakota-truck.net>
>>>>> Subject: DML: RE: Novi-2000 Dyno #'s
>>>>>
>>>>>
>>>>> You don't want the full advance that your PCM has on a
>> blown motor.
>>>>> About 24-26 degress total advance at full boost to develop peak
>>>>> cylinder pressures at ~10 degrees ATDC which is about where you'll
>>>>> find the Magnum is most efficient. The tendency is to jam as much
>>>>> timing as possible and that's not the best approach. You only hurt
>>>>> parts, slow down or both.
>>>>>
>>>>> Bob
>>>>>
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: owner-dakota-truck@bent.twistedbits.net
>>>>>> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Dave
>>>>>> Downing
>>>>>> Sent: Saturday, July 19, 2003 2:53 PM
>>>>>> To: dakota-truck-moderator@bent.twistedbits.net
>>>>>> Subject: DML: Novi-2000 Dyno #'s
>>>>>>
>>>>>>
>>>>>>
>>>>>> Got the Novi-2000, GSM headers and Spintech true dual exhaust
>>>>>> installed, and dyno'd the setup today. Had to get out of
>>>> it early on
>>>>
>>>>>> the first dyno run
>>>>>> due to detonation, pulled 346rwhp/383rwtq. Cranked up the
>>>>>> boost retard
>>>>>> after that, did a few more pulls to tune the a/f. If I
>> can get the
>>>>>> detonation under control and get a full run without any
>>>>>> retard the guys at
>>>>>> the shop were thinking close to 400rwhp/450rwtq, I could live
>>>>>> with that :)
>>>>>> Guess I'm gonna have to look into some alky injection.
>>>>>> There's a few pics
>>>>>> on my site at cardomain, I'll get some better ones next week
>>>>>> when she's
>>>>>> cleaned up.
>>>>>>
>>>>>> http://members.cardomain.com/bad360rt
>>>>>>
>>>>>> -Dave
>>>>>> '02 FR RC R/T
>>>>>> Novi-2000 powered :)
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:38 EST