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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 10-20-2007, 04:51 AM   #11
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Quote:
Originally Posted by McGrath
Quote:
Originally Posted by Shadowfax217
3.4 or 3.5 pulley (which is better?)
Depends, it comes down to a matter of scanning. You want to run the pulley that will give you the least amount of KR while 0 degrees of KR is what we all aim for.

Ed
And the one that does that is..?
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Old 10-20-2007, 09:58 AM   #12
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every car is and responds different. I was getting KR on the STOCK pulley.....

you need to scan your car to be able to see what its doing before you pulley down
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Old 10-20-2007, 12:27 PM   #13
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Keep in mind, most cars here don't replace their entire exhaust or need to replace their mufflers until they're deep into the 13'* on the quarter mile.

You may want to do your cat right now, and forget replacing your resonator or mufflers/tips until your power levels dictate it. Spend your money on what will either add or support power.

You need to have a method/tool to scan for KR before getting a smaller pulley. If you start with a 3.4, and have too much KR, be ready to either buy a 3.5 or start spending money elsewhere in combatting the KR you find.
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Old 10-20-2007, 04:19 PM   #14
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Man, I hate how everything links back to KR.
I'm not sure I understand why KR is such an issue with Bonnevilles.
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Old 10-21-2007, 10:58 AM   #15
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KR is what the computer does to eliminate knock that it'* sensors have picked up. This means if you have KR, you have knock. You eliminate KR by getting rid of the knock.


One or two degrees of KR is not going to destroy your car instantly or anything, but if you spike up to, say, 10 or 15 degrees, you have a problem. And there is a limit to how much timing your computer can pull for KR. When you exceed that, "kablooey" becomes a very real possibilty.

If you don't want to buy a tuner, an Aeroforce guage is a good alternative. It will let you monitor KR, along with many other engine parameters. However, it does not enable you to adjust anything, and it won't log(record) the readings it'* giving you.

Also, if you want to get everything in the Stage 1X package, except the FWI, just talk to Todd about leaving that out and get the rest of the package.
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Old 10-21-2007, 11:28 AM   #16
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It'* not just Bonnevilles. It'* all forced-induction cars.

Despite our L67'* being built from the factory tough enough to deal with most aspects of stuffing air in there, KR becomes a player early in the mod game when you add boost. Some even have a little in stock form.

Bottom line is that 1-2 degrees tells you that you pushed it about as far as you could with boost, and need to start opening things up downstream.

In more specific terms:
http://www.bonnevilleclub.com/forum/...t=boost+timing
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Old 10-21-2007, 02:43 PM   #17
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Ok now I have a wayy better understanding of it. Thanks.

Quote:
If you don't want to buy a tuner, an Aeroforce guage is a good alternative. It will let you monitor KR, along with many other engine parameters. However, it does not enable you to adjust anything, and it won't log(record) the readings it'* giving you.
The AeroForce is the one I was told about and was actually going to buy. What are the other tuners you are talking about and what can you adjust with them?

Quote:
Also, if you want to get everything in the Stage 1X package, except the FWI, just talk to Todd about leaving that out and get the rest of the package.
I was actually going to work for while and get a whole wad of money and buy the Stage 3 package. Because I was already deciding on getting headers, this package already has them in it.

And kind of a side note, when I'm looking at the list of links of the things that come in the package, I noticed that both the Intense FWI and the Yella Terra 1.90:1 Roller Rocker & Pushrod Package won't let me see them. When I click on it, it says Fatal Error. This sucks because I need to see what I'm buying here. Do you guys have that problem?
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