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#311 |
![]() Join Date: May 2010
Location: Japan
Posts: 3,572
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Congratulations Tom and great job with this project. Thanks for taking time to document and share. I'm sure you'll find a new project soon and I can't wait to follow along and I'll be a sponge sucking up this info.
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Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048 ![]() |
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#312 |
![]() Join Date: Mar 2015
Location: New Zealand
Posts: 385
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Hi Tom great to see it going again awesome to see it idling at the correct speed also good that you are happy with it
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#313 | ||
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Location: Warrington PA
Posts: 1,913
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 08-15-2017 at 11:19 AM. |
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#314 |
![]() Join Date: Oct 2013
Location: Spokane Valley, WA
Posts: 115
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I've been following the posts closely as I'm rebuilding my LT5 (160k miles) to with GVD full porting including the TB. I'll have to go through the idle setting. Short block is done, waiting on the top end but not rushing. Thanks.
Tony |
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#315 | |
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Location: Warrington PA
Posts: 1,913
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that you need to do to get your counts in range. If your idle is higher than it should be, then you may have a different or additional problem that will need to be addressed. Most of you probably already know this, but I thought I would post what is working for me. This has been quite a learning experience for me and I very much appreciate the certain individual who has educated me through this during this time. ![]()
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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#316 |
![]() Join Date: Oct 2013
Location: Spokane Valley, WA
Posts: 115
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Thanks. I've got a Tech 1 and will be following the procedure you provided.
Tony |
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#317 | |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#318 |
![]() Join Date: Oct 2013
Location: Spokane Valley, WA
Posts: 115
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Agree, the LT5 is a stout high mileage engine. However I don't think the previous owner cared well for the car. I had excessive oil consumption, even for an LT5, and barely got through CA smog after 4 tries last time-probably the oil blow by. All the liners were out of specs and a few had fingernail snagging scratches so I replaced them all. And who doesn't need more power!
Tony |
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#319 | |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#320 |
![]() Join Date: Mar 2014
Location: Warrington PA
Posts: 1,913
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So last night my throttle was sticking again in the garage later in the night. So opened the throttle all the way and left it like that for the next 15 hours. Also was thinking of what I could do to make the throttle non-sticky. It was operating very smoothly after I took out the plastic inserts. Then I applied a thin coat of White Lithium Grease on the ends of the blades so when they close they would be less sticky. It seems to work well, might have to do a little bit more on the top of the blades.....this is apparently what happens when you don't bake the "dag" in an oven as per instructions. It takes much longer to cure.....
I did do a minor tweak last night on the min-air screw, another counter clock wise turn, a very tiny adjustment. My TPS reads .54v with engine off, but will read .56v with engine running and sometimes will go down to .54v when stopped. The engine does not stall, the idle is where it should be IMO. The IAC's have somewhat stabilized during the stop and go testing, which reads anywhere from 15 to 10 count at a stop and after the second test drive right after the first test drive came down to a 6 count. But that 6 count was a result of me turning the AC on and off multiple times, so it may not have had time to stabilize. Everything is where it is going to be, I could be splitting hairs forever trying to get the perfect balance. So I am very satisfied with the results, the only other tweak would be to the throttle blades again, with the white grease. And my idle was in range with the desired idle reading of 662 rpm's when fully warmed up in Closed Loop. It could go as low as 637 r's or as high as 675 r's. And this does need repeating, at no time did the idle ever go up to the 900-1100 rpm range as before when I was having that problem. That alone is worth everything that was done with this plenum pull. With the corrections made and a lot of luck....lol, it is a very satisfying feeling!!! Other than that, it's a done deal....... keeping the throttle blades open all night and most of the day... ![]() one of my readings during a complete stop.... ![]() TPS reading with engine running at a complete stop.... ![]() TPS reading with engine off and sometimes running at a complete stop... ![]() Throttle opens to 100% with engine not running... ![]() my last IAC count reading with engine idling after the second test drive for today.....and multiple AC on and off tests... ![]()
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 08-16-2017 at 06:49 PM. |
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