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10-31-2018
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#91 | |
 Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
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Sent from my XT1585 using ZR-1 Net Registry mobile app |
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10-31-2018
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#92 | |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
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Sent from my XT1585 using ZR-1 Net Registry mobile app |
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10-31-2018
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#93 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Plenum & Injector Housing Porting
Looks like we’re on the opposite side of the same boat. Mine was 364rwhp today but very lean. Doms going to add fuel and I’ll go back. With these mods we should be in the 390’s...
H 
__________________
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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10-31-2018
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#94 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
My techs believe I've got another 15-20 hp when I get the WOT fueling dialed in to 12.8-13.1. I was literally spitting raw fuel out the exhaust!
Going to dial back the PE and rerun next week when I've got some time to tune on the Dyno . Sent from my XT1585 using ZR-1 Net Registry mobile app |
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10-31-2018
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#95 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Plenum & Injector Housing Porting
This was my dyno run w similar mods. I believe I had Magnaflow catback at this point.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX Last edited by XfireZ51; 03-08-2024 at 03:09 PM. |
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11-14-2018
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#96 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
Loaded 10% and Inertia pass. Inertia useless in my mind, but put it on the chart as well for giggles.. 369 rwhp loaded.. Like Dom's chart, it's impressive to see the engine carry the RWHP all the way to 7000 rpm!
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11-14-2018
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#97 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Plenum & Injector Housing Porting
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__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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11-15-2018
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#98 |
Join Date: Jul 2012
Location: Allentown, PA
Posts: 309
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Re: Plenum & Injector Housing Porting
What happened to your torque? Was 405 ft. lbs. when it was rich?
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'95 ZR-1, aqua/gray, #167 368 LPE/Haibeck, Web cams, Stainless Works headers, B&B Fusion exhaust, 18" Fikse wheels, Alcon brakes, lowered. 491 SAE RWHP. |
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11-15-2018
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#99 | |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
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03-13-2019
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#100 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Plenum & Injector Housing Porting
Have had some time to experiment with fuel and spark on the top end after porting #473. Slowly sneaking up on what the engine likes using an MD1100 dyno. Have eased in another 2-1/2 degrees between 5500 & 6500 @100 KPA. Max knock retard 0.5 degrees. My fuel cutoff is still sitting at 7,042. The torque is slowly rolling off, but HP is still climbing at 7,000. 406 rwhp, 374 rwtq. How far have you guys pushed fuel cutoff with a stock bottom end?[ATTACH]
Sent from my XT1585 using ZR-1 Net Registry mobile app |
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