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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 03-18-2008, 02:49 AM   #1
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Default Finally, Rockers

I've searched around and as a slow person I need a better understanding about rockers. I'm going to purchase some 1.8 rockers ASAP and to my understanding I need to keep my current springs, and push rods right?

I need a custom pcm to take advantage of the rockers right?

Are there any other particular thing I need to consider when purchasing rockers (Aluminum or Steel)?

Are there any special thing to valve'*? Since I have the EGRless 92' I might as well change the valves also.
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Old 03-18-2008, 08:31 AM   #2
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Default Re: Finally, Rockers

Quote:
Originally Posted by trigga_b
I've searched around and as a slow person I need a better understanding about rockers. I'm going to purchase some 1.8 rockers ASAP and to my understanding I need to keep my current springs, and push rods right?

I need a custom pcm to take advantage of the rockers right?

Are there any other particular thing I need to consider when purchasing rockers (Aluminum or Steel)?

Are there any special thing to valve'*? Since I have the EGRless 92' I might as well change the valves also.
I can't say for sure with your engine, but it may be a good idea to change your springs. You don't want valve float. If your goingn to change rockers, then you shoudl also look at pushrods, springs, retainer, and perhaps valve locks. There are others that know more about your engine. I just did all of that on my engine the other week. Well worth the effort.
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Old 03-18-2008, 09:15 AM   #3
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A few points:

1. The only source for 1.8 rockers in the States was ZZP.

2. The 1.8 rockers at ZZP don't work with 92 heads. You need 93-94 L27 heads or 93-95 L67 heads.

3. They work with stock springs and pushrods. The only reason I upgraded was because I raised my shift points and had valve float at the top end. My stock springs were tested when they came off, and were still at OEM spec.

4. Stock S1 springs are already stronger than S2.

5. ZZP no longer sells those rockers, so you're looking at 500-600 bucks out of Austrailia if memory serves, as INTENSE hasn't started selling them yet. And even if they did, you still need different cylinder heads.
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Old 03-18-2008, 06:29 PM   #4
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So no matter what, if I upgrade to 1.8 I have to upgrade my heads? I could get that from the junkyard on a half off day.

Can't I use some rockers from a LS1 engine, out the junkyard? Or from ebay?
http://cgi.ebay.com/ebaymotors/ws/eB...TODAY.m238.lVI

http://cgi.ebay.com/ebaymotors/Scorp...spagenameZWD1V
I know I need a 3/8 stud right? The ones from zzp were built to where you don't have to modify your valve covers too right?
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Old 03-18-2008, 06:31 PM   #5
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No, those rockers won't work for you. Or anyone else here on this Forum.
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Old 03-18-2008, 08:33 PM   #6
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Sorry to butt in, but when did ZZP drop them
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Old 03-18-2008, 09:00 PM   #7
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Don't know exactly when. Don pointed it out to me about a week ago.

More pressure on INTENSE now, huh?
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Old 03-20-2008, 01:38 PM   #8
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We have the following available but they aren't on the web site:

1.7 3/8 stud
1.8 3/8 stud
1.7 5/16 stud
1/8 5/16 stud

$350+shipping
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Old 03-20-2008, 01:45 PM   #9
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Just being Curious... If they are avaliable why aren't they on the web site?

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Old 03-20-2008, 02:23 PM   #10
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Is there a difference between "In Stock" and "Available"?
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