1.9 rockers and springs ( sorry long post) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-18-2005, 12:15 PM   #1
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Default 1.9 rockers and springs ( sorry long post)

I did a search both here and on ClubGP. I can't seem to find a definate answer on this dillema, just opinions. I had 1st gen 1.9 rockers on my GTP and ofcourse took them off when I traded in the car. Now I want to put them on the Bonnie. I did not change valve springs when I did the rockers on my GTP. I had them on the car for at least 40,000 miles. Never any valve float and never any problems. So I want to put them on the Bonnie but am wondering if I should do springs. It'* another $100 and because you can't rock the motor forward, it looks real tight to be working back there. Tryiong to work with the spring compressor back there etc just looks like no fun. SO what'* everyone opinion here? Do springs with 1st Gens or not? From the research so far it would appear most of the people have had no problems with valve float with 1st Gens but it'* recommend to do springs with 3rd Gens because of their different make up etc. they are more prone to valve float. Do stock springs weaken over time? More so with high ration rocker arms? Since I have low miles on the car I need it to last a long time.
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Old 05-18-2005, 01:18 PM   #2
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Default Re: 1.9 rockers and springs ( sorry long post)

Quote:
Originally Posted by hvactech
Since I have low miles on the car I need it to last a long time.
Install LS6 valve springs with the 1.9:1 rockers and do the job once and for all

Cheers,
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Old 05-18-2005, 01:39 PM   #3
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Default Re: 1.9 rockers and springs ( sorry long post)

Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by hvactech
Since I have low miles on the car I need it to last a long time.
Install LS6 valve springs with the 1.9:1 rockers and do the job once and for all

Cheers,
+1
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Old 05-18-2005, 01:59 PM   #4
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Ya put the LS6 springs in.
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Old 05-18-2005, 03:58 PM   #5
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Quote:
Originally Posted by Allmachtige
Ya put the LS6 springs in.
So what all will I need? springs, retainers, valce spring compressor, fitting to screw into spark plug hole to fill cylinder with air.

p.* Allmachtige would be a Dutch word as far as I know. I'm Dutch myself so I recognized it. You Dutch as well?
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Old 05-18-2005, 04:08 PM   #6
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to rock the motor forward. remove the front motor mount, rock the car in park when the motor rocks forward stab the E brake.
sense you have the front mount off put a solid motor mount in its place.


ROD
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Old 05-18-2005, 05:13 PM   #7
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Quote:
Originally Posted by rrounds
to rock the motor forward. remove the front motor mount, rock the car in park when the motor rocks forward stab the E brake.
sense you have the front mount off put a solid motor mount in its place.


ROD
So it can be rocked forward...great info...!

I see we're neighbors
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Old 05-18-2005, 05:36 PM   #8
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give your neighbor a call
(916)454-4489

ROD
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Old 05-18-2005, 10:13 PM   #9
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Quote:
Originally Posted by hvactech
Quote:
Originally Posted by Allmachtige
Ya put the LS6 springs in.
So what all will I need? springs, retainers, valce spring compressor, fitting to screw into spark plug hole to fill cylinder with air.
You can reuse the retainers (carefull cause they're easy to drop and hard to find).
I did not have access to any air in my driveway so I used an old farmer trick to hold my lifters up, I stuffed nylon rope into the cylinder and turned the crank to seat the valves (cute eh?).
Other than the springs all you need is some valve cover gaskets and some push rods while its apart.
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Old 05-18-2005, 10:30 PM   #10
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We put the 1.9 rockers on our SSEi when it had 70k on it. We didn't change any valvetrain components other than the rockers and it has been fine. No valve float or anything, but also keep in mind this engine has never been pushed past 6000rpm. Its normal shift point is ~5950 and we don't ever manually shift it, so that is part of it. However, the GTP had 1.9 rockers and OR pushrods installed at ~15k miles, and at 18k miles it started developing valve float. (although this car had been pushed hard since it was new and had numerous track passes on it in those 3k and was pushed to 6200rpm on numerous occasions) At that point we installed ZZP'* 85lb. valve springs and valve float was no longer a problem. You never know if you'll run into it or not, and the springs/retainers aren't very expensive, so you might as well just get them while its apart, better safe than sorry.

Shawn
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