head gasket

[Bruce Plecan]

> Hi Ryan:  Here's my map.  Man trans means less advance in high load low
> rpm areas.  11.1 to 1, 355 cu in. FI 355.  LT4 Hot cam.

11.1 to 1,355 compression ratio? Wow?

> Mark
> RPM  LOAD VALUE, gm/Sec

May I,

>  32 48 64 80 96 112 128 144 160 176 192 208
> 400 25 25 25 25 25 25 25 25 25 25 25 25
> 600 25 25 25 25 25 25 25 25 25 25 25 25
> 800 25 25 25 25 25 25 25 18 18 18 18 18
> 1000 2025 25 25 25 23 21 20 14 10 8 8 8
> 1200 2025 30 30 25 23 21 20 14 8 1 1 1
> 1400 25 35 40 38 34 34 31 31 18 2 2 2
> 1600 24 40 42 42 38 35 31 28 22 3 3 3
> 1800 25 43 43 42 39 37 36 32 27 8 8 8
> 2000 25 44 44 42 40 37 36 32 28 26 25 25
> 2200 27 45 44 43 40 39 37 32 30 28 27 27
> 2400 30 45 45 43 42 39 37 32 30 28 27 27
> 2800 30 45 45 43 42 39 37 32 30 28 27 27
> 3200 35 45 44 42 43 39 37 33 30 28 27 26
> 3600 35 45 44 42 43 41 37 33 30 27 26 25
> 4000 35 44 44 44 43 41 37 33 30 27 26 25
> 4400 35 44 44 45 43 41 37 33 30 27 26 25
> 4800 35 45 48 48 43 41 37 33 30 27 26 25

My 2 cents, not much but, like I said 2 cents
I really stick with just enough timing to get the job done, rather a couple
degrees to little then engine damage.
Matter of fact ramp some out faster, and less total, and that's about how
the GN  looks.
Bruce

>
> ----- Original Message -----
> From: <KasaRyan at aol.com>
> To: <gmecm at diy-efi.org>
> Sent: Sunday, October 29, 2000 9:30 PM
> Subject: Re:head gasket
>
>
> > Ok - due to running way too long with too much advance or something else
> bad,
> > I hope/pray that I now have a blown head gasket.  My engine is slightly
> down
> > on power, gives off clouds of whitish smoke after running for a few
> minutes
> > (which goes away later), and has been using water.  I sure hope it's not
a
> > cracked block or head!  My question is this . . . what can I do to
prevent
> > this in the future!  I am using edelbrock aluminum heads, have arp bolts
> > torqued to 75ftlb, using felpro gasket for aluminum heads and run a 160
> > thermostat which maintains 159.4F in the summer.  I do lean on it good
at
> > least once a day though.
> >
> > Also, what does detonation sound like with aluminum heads, perhaps I
dont
> > know.  Is it more like a water rushing sound than the rattle tink I am
> used
> > to?  (I get a noise like that at part throttle/hgih map, but get no
knock
> > counts.  If I turn the timing up , I will get knock counts but no
audible
> > detonation.  If I turn the timing up even more, I can get audible
> detonation
> > in the rattle-tink form.  I am running 34 degrees total at WOT by 3600,
> and
> > never less than 15 anywhere.  cruise from 20-55kpa at 2000 is 44 deg.
47
> deg
> > at 2400.  How are these numbers compared to what others are running with
> al
> > heads.  Yes I know that every engine is different, but small block
chevys
> are
> > preety much a known quality.  Am I in the ballpark here or what?  I know
> you
> > want 36-38 at wot on iron heads, and more initial and less total with
> > aluminum heads.
> >
> > Thanks for listening to my electroyappin!
> > Ryan Hampl - a K-State Grad!    kasaryan at aol.com
> > 139 Hoover Ct.                  Controls Engineer (tubes rule!)
> > Salina, KS  67401               97 B12 / 86 V65 / 93chevy truck EFI 383
> > phone  (785) 825 5831           I'M ALWAYS FIRST TO THE GROCERY STORE!
> > http://hometown.aol.com/kasaryan/myhomepage/hotspot.html
>
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