[Shotimes] 89 sho dyno charts posted
Bruce Malachuk
bmalach1@nycap.rr.com
Tue, 7 Jun 2005 01:53:06 -0400
>From what I saw in the dyno plots, Don you need a tweecer or an LPM to take
out some of the fuel from about 4500 to the 7000. Nearing 11.5 to 1 A/F
ratio is a bit rich, and if you're seeing those numbers with the A/F monitor
instaslled in the stock location, then you are prolly shorting yourself a
bit more up top. I know that when I did a few WOT passes with my Wb02 and
datalogging with the laptop, I was seeing about 11 to 1 as I neared 8k. I
hit 10 to 1 A/F at 8500just before the limiter I still have set kicks in. I
pulled out a bunch of fuel up there from 5k up to the limiter and I noticed
that the car seems to pull harder and longer. A definate butt dyno feel, but
with a tweecer I can have 1-4 different setting ans switch them on the fly.
I went back and forth between pig rich up top and more around the 13 to 1
A/F and 3 friends agreed that the car felt even stronger fron 5k up.
Course I still for the life of me can't get the dyno graph thing to work
right from my datalogs and EEC Analyzer, but my car feels pretty good, even
without my EH, BBB's, and a broken front kirked mount flopping around. Soon
as a few more parts arrive I can put the intake, 30# injectors and a few
other little things on my car, retune a bit and finally head to the dyno.
Hopefully just in time for the SHOshop to have some decent numbers from
their headers, so I can think about adding them to my car too.
Bruce J Malachuk
* 94 Opal Frost MTX
* 93 Emerald Green MTX - SOLD
* 93 Black ATX - New Parts CAR
* 95 Silver Frost ATX SE - SLO -Buyer waiting
* 96 TR - Cam Failed parts car :-(
-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of Ian Fisher
Sent: Monday, June 06, 2005 11:20 PM
To: Justin Schick; shotimes@autox.team.net
Subject: Re: [Shotimes] 89 sho dyno charts posted
With the +20's, I'd expect a lower tq peak but to hit that tq peak much
sooner than with the stock cams. So even if you are down a few lb/ft on
paper you may be making your peak much sooner in the rev band. The hp gain
looks nice. I didn't look at the charts, just going by Justin's numbers. How
does the car feel? Butt dynos obviously aren't reliable measures but does
the car feel like a dog or does it feel better?
I guess we'll see how my +20's perform. I won't have any old 3.0 dyno info
to put it against but there really isn't any point. The 3.2 that I am
putting in is heavily modifed by comparison and is either fresh or
refreshened where applicable. I'll also be installing the adjustable cam
sprockets which may be something that you'd find beneficial for moving the
power up and down as well as decreasing overlap. Are you running any tuning
aids such as an LPM or TwEECer?
Ian
--- Justin Schick <jschick@aafp.org> wrote:
> Don,
>
> I've seen a few dyno graphs in my day but am no means adept at
> deciphering them, and am staring at a so-so laptop LCD. What happened
> to the performance seems to be what I'd expect with what mods were
> made. The intake path was opened up and the powerband moved up in the
> RPM range. The torque curve is now flat as Kansas and great for a
> track car. This is what I see:
>
> old
> max HP = 205 @ 6200
> max TQ = 195 @ 4750
>
> new
> max HP = 220 @ 6750
> max TQ = 190 @ 3500 - 4000, 4750 - 6000 red (the first run) was better
> and more rich.
>
> If you want off idle torque, give it about 6 psi or another half liter
> of displacement! =)
>
> Justin
> parted 92 - need something (like an intake?)?
>
> >>> Donald Mallinson <dmall@mwonline.net> 6/6/2005
> 7:45 PM >>>
> I finally got the prints of my dyno test of the new .20 cam setup. So
> I don't use up bandwidth, I have put the dyno charts up on the
> shoclub.com web site. here is a short link:
>
> http://makeashorterlink.com/?A2625163B
>
> I could not get the new charts on disk so I had to scan all of them.
>
> to my way of thinking, this is a much weaker engine than before.
>
> What can I do to get some power back...basically what I see is that
> unless I want the engine to live above 6000 rpm, I am have gone way
> backwards in torque and HP.
>
> Exactly NOT what I wanted.
>
> Reminder. The engine was basically a BOS with a Pro Flow 77mm with no
> chip. Ran great.
>
> Now same except with EH runners, BBB, Josh's .20 cams.
>
> Engine is healthy.
>
> What is it going to take to get back some of the power and torque
> below 6000 rpm except just putting it back to the way it was? I
> expected to have to run the engine a bit harder, but this is not good
> what I see on these charts.
>
> any and all advice appreciated
>
> Don Mallinson
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