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#1 |
Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,828
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Pulled the plenum this morning, and removed the original fuel pressure regulator. I hacked up the black top of it to remove it, and inspect the diaphragm. There was lots of rust particles in the inside of the regulator, and the diaphragm has multiple wrinkles in it, a few of which appeared to have progressed to tiny pinholes.
Here's some pics: ![]() ![]() ![]() Got a replacement on the way from RockAuto, hoping to have that by Saturday. Wonder what's next.... |
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#2 |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,385
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Man, that's nasty looking! Looks like there must have been some water in ther for quite awhile. I've cut a couple apart and never seen anything like that. Pity it can't be disassembled, rebuilt & reassembled.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#3 |
Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,828
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Jerry, yeah I was thinking the same thing, must have had water in there at some point. Of course, with almost 200k miles, anything's possible over the years. My old injectors also had some surface scale on the upper flange around the strainer basket.
The regulator's aluminum base is such a nice piece, it's a shame it can't be salvaged. Luckily I got a new aftermarket replacement for around $70. |
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#4 |
Join Date: Dec 2008
Location: San Diego
Posts: 189
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Correct me if I am wrong, but I believe I read on here somewhere that an adjustable regulator was available for the LT-5. This is the only part I did not replace under the plenum when I had mine apart. I didnt want to use an off brand OE replacement.
Anyone clarify this?
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Tom MovIt Brakes USA [url]www.TFEnt.com[/url] |
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#5 | |
Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,828
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![]() Quote:
Besides, lots of Delco parts are made by the lowest bidder anyway, so I don't feel that it's likely to be much different. Last edited by VetteMed; 01-27-2011 at 02:02 PM. |
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#6 |
![]() ![]() ![]() Join Date: May 2007
Location: Peoria, AZ
Posts: 9,153
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That is correct I tried to buy one of those a while back used but the owner and I could not agree on a price for the LPE unit. I was told later that that was really only needed for a boosted Car. Andrew great Pics BTW
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director ![]() 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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#7 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Yes. Really no need to change FP. Plenty of injector for NA purposes.
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#8 |
![]() Join Date: May 2010
Location: Japan
Posts: 3,573
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![]() ![]() ![]() As mentioned, maybe no real gain to an LPE adjustable FP regulator unless for certain applications, but here is what it looks like.
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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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#9 |
Join Date: Dec 2008
Location: San Diego
Posts: 189
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That's auto porn! I WANT one!!
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Tom MovIt Brakes USA [url]www.TFEnt.com[/url] |
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#10 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Where's the adjustment or is it a VAFPR? Does it have different spring rates available?
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