pics at the track when my egr blew open - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-27-2003, 06:04 PM   #11
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ok, here is what makes it so hard to do with the 92-95 bonnevilles. we have a series 1 engine. no one makes any internal performance parts for them, with the series 2, they make cams, 1.9 rockers,programmers instead of a fixed chip, ect.
i already made an EGR block off plate for my car 2 days after it blew open at the track.
right now im in the process of getting small block chevy valve springs and doing some research on the 1.7 ford pedestal rocker arm that crane cams make, i know i said the F word but i looked at crane cams rockers and the 1.6 chev and the 1.6 ford rockers are the exact same number, the 1.7 ford pedestal rockers just attach differently, i might have to get a valve cover spacer to mount themto gain clearance or if i can find aftermarket ones.(IF ANYONE KNOWS OF ANY , PLEASE LET ME KNOW )
WE ARE JUST VERY LIMITED TO PARTS FOR MODS AND USUALLY HAVE TO DO THE R&D OURSELVES AND JUST HOPE THEY WORK.
i also think i figured out some of my KR too, my tensioner pulley is growling and at high rpms, it rattles, replacing it this week.
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Old 05-27-2003, 06:10 PM   #12
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1.9 rockers are about 400 bux plus a $100 core till you return your old ones, they say it will add about 25 HP+
www.intenseracing.com
this link will help you with the rockers
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Old 05-29-2003, 12:05 AM   #13
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Default EGR

What are the symptoms of the EGR blowing open...??

Steve
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Old 05-29-2003, 12:09 AM   #14
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when it blew open , it sounded like a jake brake on a truck. lost all boost too
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Old 05-29-2003, 05:02 PM   #15
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Quote:
2000 SSEi:
K&N Air Filter, Thrasher 3.4" Pulley, I-Win 1.9 Rockers, Taylor 8mm Spark Plug Wires, AC-Delco 41-932 Plugs, Drilled 180 Thermostat, Gatorback Belts, Throttle Body Screen Removed



How much difference did the 1.9 rockers make

You mentioned it is still getting 5 KR. Was it more before the rockers.
Mine has the same mods except stock rockers.
Have you track tested it yet ?....or is Mom saying to use the GTP for racing instead.
The SSEi was seeing 7KR before the rockers. We thought the rockers would make way more difference than they did. It varies from car to car. I would say they added 15 horses. The car was running lean after the rockers though, so we installed a ZZP Mini-AFC last night to get the fuel mixture where it should be. We tried to scan for KR last night after the Mini-AFC but I think the computer was trying to learn the new fuel because KR was everywhere. It would start out at 9, go down to 0, go back up to 3, then go to 0, then the next time we hit the gas it would stay below 1 the whole time. It is weird, we are going to wait a couple hundred miles for the computer to learn before trying to scan for KR. I think it is pretty much gone though.

Rockers may make a HUGE difference on your car, as i said, it varies from car to car. We put rockers on the GTP when it had similar mods to what the SSEi has now, and it made a huge difference. I would recommend getting them for your SSEi, you will be very happy with the purchase.
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Old 05-30-2003, 10:39 AM   #16
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whats KR?
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Old 05-30-2003, 01:12 PM   #17
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Quote:
whats KR?
Knock Retard.
Pre-detonation causes knock. Knock is detected by the two or three knock detectors (accelerometers) that are strategically placed around the engine. When it'* detected, the computer retards the timing to protect the engine.
Most pre-detonation is not audible.
Knock is usually caused by a combination of high heat, heavy load, low octane, high compression, more boost, etc.

In my older Firebird, when it knocks, it sounds like a rattle or pinging sound. I have to use an octane booster.
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Old 05-30-2003, 08:23 PM   #18
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there are other factors in knock retard too. an ilder pulley with a bearing going bad can cause it too.also anything that makes a vibration on the motor. loose brackets,bolts, alt noise, bad water pump, bad tensioner. right now im replacing all my idelr pulleys and tensioner pulleys.
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Old 05-30-2003, 08:29 PM   #19
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Quote:
there are other factors in knock retard too. an ilder pulley with a bearing going bad can cause it too.also anything that makes a vibration on the motor. loose brackets,bolts, alt noise, bad water pump, bad tensioner. right now im replacing all my idelr pulleys and tensioner pulleys.
Yes, and that would be called False KR. It is usually random and doesn't grow as the RPM'* increase, whereas real KR will increase as RPM'* increase.
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Old 05-31-2003, 03:40 AM   #20
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Would the rockers work on a Series I L67?
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