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Forum: Pacific Region

12-27-2009

Replies: 28

SOCAL ZRONERS check in

Views: 5,700

Posted By RKC

Re: SOCAL ZRONERS check in

I'll give it a try if the time and location work out. I'm in southern Orange County, so a PCH cruise sounds good.

Forum: C4 ZR-1 Technical Postings

10-31-2009

Replies: 29

Another 1991 Fails CA emissions... Help!

Views: 12,117

Posted By RKC

Re: Another 1991 Fails CA emissions... Help!

I have a 1990 that gave me fits getting pass smog. Here are my results from my first failure.

15 mph / 2294 rpm
CO2: 14.7 (no limit)
O2: 0.2 (no limit)
HC: 51 (limit 110)
CO: 0.01 (limit...

Forum: C4 ZR-1 Technical Postings

10-31-2009

Replies: 29

Another 1991 Fails CA emissions... Help!

Views: 12,117

Posted By RKC

Re: Another 1991 Fails CA emissions... Help!

I'm sorry, but I failed to mention that I failed the first test with an aftermarket PROM. I managed to buy the last stock PROM for a 1990 in the Chevrolet system. They shipped it all the way from...

Forum: C4 ZR-1 Technical Postings

10-31-2009

Replies: 29

Another 1991 Fails CA emissions... Help!

Views: 12,117

Posted By RKC

Forum: C4 ZR-1 Technical Postings

07-31-2009

Replies: 19

Replaced Radiator and Thermostat

Views: 7,695

Posted By RKC

Re: Replaced Radiator and Thermostat

Just replaced my high performance radiator with a stock unit. What a difference! Temperature stays nice and cool when driving around town. Before, thirty seconds after getting off the freeway the...

Forum: C4 ZR-1 Parts For Sale / Wanted

06-07-2009

Replies: 19

WTB- Zr1 Headers

Views: 2,296

Posted By RKC

Re: WTB- Zr1 Headers

I have a set of coated long-tube headers that I was thinking about selling. Watson's I believe. Don't know if they suit your needs though as they have the EGR fitting but no AIR tubes.

Forum: C4 ZR-1 Parts For Sale / Wanted

01-21-2009

Replies: 7

WTB: 1990 OEM Prom

Views: 1,524

Posted By RKC

Re: WTB: 1990 OEM Prom

Actually, I read an article by Hib Halverson that stated how a ZR-1 owner had failed for NOx here in Califonia despite having virtually the same numbers he had two years prior. Apparently, in 2003 CA...

Forum: C4 ZR-1 Parts For Sale / Wanted

01-20-2009

Replies: 7

WTB: 1990 OEM Prom

Views: 1,524

Posted By RKC

Re: WTB: 1990 OEM Prom

TFENT, once again thanks for the offer. I managed to get about the last one at a GM dealership in Maine. It arrived the same day that I saw Callaway selling them at half the price. I'm glad to...

Forum: C4 ZR-1 Parts For Sale / Wanted

01-09-2009

Replies: 7

WTB: 1990 OEM Prom

Views: 1,524

Posted By RKC

WTB: 1990 OEM Prom

Still trying to solve my emissions issues here in CA. The dyno test show excess NOX at both the 15 mph and 25 mph tests. I'm about 200 ppm over at both speeds. Not too bad. I have a modded chip so...

Forum: C4 ZR-1 Parts For Sale / Wanted

10-10-2008

Replies: 12

LT5 Gaskets & Seals

Views: 3,687

Posted By RKC

Re: LT5 Gaskets & Seals

Thanks for the info. After starting the header swap, I eyed the exhaust ports and its not a pretty sight. Looks like 13 of 16 exhaust valves are having trouble controlling the oil. Just thought it...

Forum: C4 ZR-1 Parts For Sale / Wanted

10-09-2008

Replies: 12

LT5 Gaskets & Seals

Views: 3,687

Posted By RKC

Re: LT5 Gaskets & Seals

Regarding the valve stem seals, I haven't really taken a close look or a close read on the subject, but can the valve stems seals work on the exhaust side of the '90 cylinder heads? Can they be...

Forum: C4 ZR-1 Technical Postings

09-15-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

Thanks for the pictures. That's a realy tight fit on the right side.

Forum: C4 ZR-1 Technical Postings

09-14-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

Z Proud,
Those look sweet, I can hardly wait to get mine. What did you have modify on the right side headers?

Hammer,
Sorry, didn't want rub salt. So many great Zr-1's for sale now, I keep...

Forum: C4 ZR-1 Technical Postings

09-10-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

I'm still waiting for the headers from SW. They seem to be willing to supply the headers with the A.I.R. plumbing for an additional cost, though that wasn't the original plan. The CARB is a huge...

Forum: C4 ZR-1 Technical Postings

08-29-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

I'm going to check with SW to make sure. Hope I'm right, otherwise it look like it's gonna cost more to get it right.

I did see a recent article somewhere in which AIR tubes were added to an...

Forum: C4 ZR-1 Technical Postings

08-29-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

I believe the new SW headers that have been sold on the forum give the AIR tubes as an option. I went with the headers that place the cats before the y-pipe rather than the long tube headers.
...

Forum: C4 ZR-1 Technical Postings

08-29-2008

Replies: 36

A.I.R system Q's

Views: 4,665

Posted By RKC

Re: A.I.R system Q's

This seems to be a common problem for those of us with the visual smog inspection. I'm in CA. Just bought Uly's 1990 and took it into to smog. Didn't even get on the machine, the inspector said I...

Showing results 1 to 17 of 17

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