Patrick & Alan,
The chambers were completely polished and the intakes un-shrouded to reduce
compression and reduce the chances of hot spots. Plugs are standard heat
range. but they do come out dark (rich under boost). I run 92 octane
gasoline and did not want to use any octane booster. If I remember
correctly, the blower
pulley that came with the kit was 3.25 inch, I worked with Vortech to get
the boost figures I wanted (approx. 4 lbs @ 3,000, 6 lbs @ 4,000). I think
the pulley
they sold me was a 2.75 inch but I am not positive (need to check the
receipts). In regards to the RT cam, I really have no idea what the specs
are. I also
helped a friend install the Vortech kit on his truck (stock engine), WOT
above 4,000 his truck detonates.
Frank
> -----Original Message-----
> From: Kabuki2@aol.com [SMTP:Kabuki2@aol.com]
> Sent: Friday, September 18, 1998 1:05 PM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: RE: detonation with only 4 lb or boost?
>
> In a message dated 98-09-18 15:48:15 EDT, you write:
>
> << Maybe detonation is caused by the head design. I don't know how the
> chambers are finished. Maybe there are some rough spots that become hot
> spots causing it.
>
> I would definitely use a (one step) colder plug.
>
> Do a full throttle run and shut down right after you lift and check the
> plugs for signs of detonation.
>
> Going to have to do something before the '99 Ford Lightning RC comes out
> (roots blown 5.4 SOHC) >>
>
> One thing Frank didn't mention was his pulley size (Frank?) ... I'm not
> sure
> about his truck, but I don't get anywhere near 4lbs in the 2000-3000rpm
> range
> he mentioned. I think I might get 3psi at 3000rpm, but my truck really
> doesnt
> start moving until 3000+ anyway. That would be from the combination of my
> exhaust, and cam killing the low end torque my truck once had.
>
> I have done a full throttle run through 1st, 2nd, and half of 3rd at my
> appropriate test and tune area (infront of my shop, hehe.) and the plug
> didn't
> show any appreciable signs of detonation. I checked it with a loop. Showed
> a
> darker tannish color with a light shade of orange (damn 104+....)
>
> ttyl
> Patrick
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