[Z06] If I did spring work . . .
04-17-2012, 04:25 AM
#1
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If I did spring work . . .
Hey guys,
If I decided to replace my stock springs for preventative reasons, what other work could I do at the same time? For example, installing a new CAI system (thinking Honker) would be a good thing to do to "toss in" with the labor. What else could I do that would be important preventative maintenance?
Also, unrelatred question; at what coolant temperature does the ECU lower the performance of the vehicle? I heard it starts adjusting timing at certain temps?
Thanks guys.
If I decided to replace my stock springs for preventative reasons, what other work could I do at the same time? For example, installing a new CAI system (thinking Honker) would be a good thing to do to "toss in" with the labor. What else could I do that would be important preventative maintenance?
Also, unrelatred question; at what coolant temperature does the ECU lower the performance of the vehicle? I heard it starts adjusting timing at certain temps?
Thanks guys.
04-17-2012, 01:12 PM
#3
Melting Slicks
I'd also do Comp's retro-fit trunion kit for your stock rocker arms:
http://www.texas-speed.com/p-361-com...s-engines.aspx
...or instead upgrade to 1.8 roller rockers since you'll be upgrading the springs anyway.
Last edited by skyavonee; 05-15-2012 at 06:37 PM.
04-17-2012, 02:40 PM
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Pretty sure he's talking about valve springs.
I'd also do Comp's retro-fit trunion kit for your stock rocker arms:
http://www.texas-speed.com/p-361-com...s-engines.aspx
...or instead upgrade to 1.8 roller rockers since you'll be upgrading the springs anyway.
Pushrods are also a good idea - it should only add like $140 in parts and $0 in labor.
I'd also do Comp's retro-fit trunion kit for your stock rocker arms:
http://www.texas-speed.com/p-361-com...s-engines.aspx
...or instead upgrade to 1.8 roller rockers since you'll be upgrading the springs anyway.
Pushrods are also a good idea - it should only add like $140 in parts and $0 in labor.
Thanks for the info Sky. Any thoughts on the temperature question?
04-17-2012, 03:17 PM
#6
Melting Slicks
I'm actually curious about that one, too. I suspect it's more complicated than just coolant temp. The ECU pulls timing to avoid detonation, so there are probably other factors (like IAT, and maybe even MAF readings) that have an effect. If you don't get a sufficient response in this thread, I bet the guys over in the C5 Scan and Tune forum would have an answer for you.
04-17-2012, 08:54 PM
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Cool, thanks for the tips.
I agree that it's probably more complicated than just coolant temps. It's just that I can feel a "seat of the pants" difference in the car once tempts go above 210F, which is often for my car. It's something I plan to devote a few weekends to so I can sort it out.
I agree that it's probably more complicated than just coolant temps. It's just that I can feel a "seat of the pants" difference in the car once tempts go above 210F, which is often for my car. It's something I plan to devote a few weekends to so I can sort it out.
04-18-2012, 10:44 AM
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Cool, thanks for the tips.
I agree that it's probably more complicated than just coolant temps. It's just that I can feel a "seat of the pants" difference in the car once tempts go above 210F, which is often for my car. It's something I plan to devote a few weekends to so I can sort it out.
I agree that it's probably more complicated than just coolant temps. It's just that I can feel a "seat of the pants" difference in the car once tempts go above 210F, which is often for my car. It's something I plan to devote a few weekends to so I can sort it out.
When you said that you could feel a "seat of the pants" difference once temps get to above 210F.
Does your car seem faster or slower once over 210F?
04-19-2012, 04:22 AM
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I feel like it's more sluggish. I may just be kidding myself, but My temps will easily go up to 230F if I don't turn on the A/C or go on the freeway. At those temps It feels slower.
04-20-2012, 06:17 PM
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Is that all stuff you'd recommend doing as a preventative measure? I have an 03 Z with 18k miles that's running great, but I definitely want her to go the distance... 100,000 miles without engine trouble, I'd be happy
04-20-2012, 07:24 PM
#12
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The valve seals at 18k are probably just fine. Hardened push rods are cheap insurance as is the trunnion upgrade. A few guys had their rocker trunnions shell and needle bearings got into the engine causing damage. Depending on weather or not you plan on adding a cam later and how you use the car will help you determine if you need to upgrade anything other than the springs.