Exhaust Gas Temps.

2132 Views 11 Replies 6 Participants Last post by TeamSpeed, Aug 31, 2002

Bigsaint

Discussion Starter · Aug 30, 2002

If I'm asking too many questions, just tell me to shut up.

I imagine they got pretty hot in the bikes, do you have to monitor them at all with the performance mods., such as the PC3 ? Or is it a non-issue due to the short times that they are high ?

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station.

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Barbarian-CBX

· #2 · Aug 30, 2002

Hey Bigsaint, You can absolutely never ask too many questions. Not only is that how you can become an expert, but, that will also help all those who read your questions and see the responses learn as well.

Not just a barbarian, a great barbarian!

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238mph

· #3 · Aug 30, 2002

Biggi...I run an EGT in each cylinder...and then mapped
my pc3r to balance each one ...Kawasaki runs the bike
waaaay too lean, which makes exhaust gas temp
dangerously high, but is needed to make the cat work.

Since my cat is gone, etc, I run my EGTs at the temp that
is known to make max hp...

Jere, West Palm Beach, FL ,

You must be fast, 'cause I was hauling ass when I passed you!

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Kawapat

· #4 · Aug 30, 2002

What temp does the standard run at?
What temp is best for HP?
What point in the pipe(s) do you take the EGT?

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Bigsaint

Discussion Starter · #5 · Aug 30, 2002

238, cool. Ditto on Kawapat's questions. In the truck we run one sender, pre-turbo, in the exhaust manifold, which monitors the back 3 cyl. ( the hottest). Unless I'm running a long WOT run, I try to keep them around or under 1300F. We had one member melt his pistons with a fault sender that was giving false (lower) readings. Some have gone as high as 1750F + for real short periods, with no immediate effect.

Where are you tapping into the system for your pyro probes ? Got any pics. of the install, or are you using a removable pyrometer ?

Thanks again for the info !

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station.

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Bigsaint

Discussion Starter · #6 · Aug 30, 2002

Something like this one, with a sender for each cyl ?

www.jegs.com/images/produ..._large.jpg

Or are you using a fixed gauge with 4 senders and a switch to rotate between each sender ? Or am I way off on both guesses ? Guessing again that you use a cylinder/spark plug probe kit ?

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station. Edited by: <A HREF=http://pub56.ezboard.com/bkawasakizx12r.showLocalUserPublicProfile?login=bigsaint>Bigsaint</A> at: 8/30/02 8:17:01 am

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· #7 · Aug 30, 2002

I've been debating whether to go A/F sensor or EGTs.

I'd be interested in the EGT setup too.
What temps are good/bad.
Mounting tips.
Etc.

And what advantages EGT gives over A/F.

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workman1000

· #8 · Aug 30, 2002

Are you sure about that 238? Every zx12r I have seen was running waaayyy too rich in most places. In stock form, the zx12r is a little rich almost everywhere. Once I modded the stock exhaust, it was too rich to the extreme. And I do mean extreme. Now that I have the Yosh full system on, it was rich in most places before I mapped it. Now after taking out a considerable amount of fuel, it runs great. But it is most definitely not too lean.

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238mph

· #9 · Aug 30, 2002

Hey guys...I'm out on the road right now...vacation
in tucson, AZ...so I can't take any pics and post them right
now...but I have a probe in each cylinder just below
the first bend coming out of the head...

I have two gauges, and each one has a needle on the
left and a needle on the right, and as they get hotter,
they cross each other like swords...that way I can see
what all four are doing at a quick glance.

If they are mapped right, the needles lift together,
and it looks really cool and easy to see a bad cylinder.

Workman...now you got me going, because I didn't
write down notes...but I could swear they were lean.
Sorry, because usually I'm real meticulous about that
stuff.

Most people I have worked with say that 1375 is the
temp which achieves max hp on gasoline. So I dialed
in my map to be within 25 degrees most of the time,
except for idle in which I richened it a little to help
cool the valves...

When I get back I'll post some pics if anyone is
interested...oh, mine is an '02 so I don't know about
the maps for '00 or '01...

Jere, West Palm Beach, FL ,

You must be fast, 'cause I was hauling ass when I passed you!Edited by: <A HREF=http://pub56.ezboard.com/bkawasakizx12r.showLocalUserPublicProfile?login=238mph>238mph</A>

at: 8/30/02 1:46:16 pm

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Bigsaint

Discussion Starter · #10 · Aug 30, 2002

Thanks 238. Sounds like you have Westach gauges ?

www.westach.com/images/sh...al_EGT.jpg

If possible, I'd like to see a pic. or 2 of the install when you get back home.

Scott W.

2001 Dodge 3500 CTD making 450 RWHP on #2 alone. 2002 blue ZX-12R, stock, but not for long. I am my own warranty station.

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· #11 · Aug 31, 2002

a big yes to that....!!!

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TeamSpeed

· #12 · Aug 31, 2002

How are you using the PC3r to map each cylinder? Heck, you can't even map the PC3r to change fuel based on gear. With the O2 meter, I can see that one setting at a % throttle and RPM in one gear shows lean, then in higher gears it richens up, which is all from the stock computer.

Really need the yosh box or even better, the Muzzy box. EGT would be alot better, but I am curious about the tuning each cylinder with the EGT and PC3r...

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