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03-22-2009
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#1 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Date Stamp on Plenum
I noticed today when putting the 90 back together there was a date stamp on the back....forgot to get pics, but did not notice that on the 92. Anyone else seen this?
As I am still chasing the vac leak I will have the plenum back off tomorrow. Replacing the injector O-Rings helped as the idle no longer surges to 1200-1500 but hangs at about 900RPM. The vac lines attached to the middle of the plenum are also not hlding vacuum now.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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03-22-2009
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#2 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: Date Stamp on Plenum
most likely the one way ck valves are either bad or dirty
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03-22-2009
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#3 |
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Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: Date Stamp on Plenum
or the rubber connectors have become loose at the plastic pipe . i used some black gasket goo to seal mine
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03-22-2009
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#4 |
Join Date: Dec 2007
Location: Reston, Virginia
Posts: 939
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Re: Date Stamp on Plenum
Vac line cracked or vac connectors loose/split from age or vac canister bad or check valves shot or vac pump needs rebuilding or combo of any or all. Is the vac pump running on or just running a start up?
Date stamp...assume you mean a 'stamped on' date stamp..where to you fine this specifically? As for me if found this when I had the plenum pulled this winter...  10-7-89 BK Was free hand engraved on the crankcase vent valve cover... assume BK is Bill Kepple who was one of the engine builders at MerCruiser.
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Michael :cheers: [I][SIZE="2"]1990 RED on RED #566[/SIZE][/I] [I][SIZE="2"]WAZOO MEMBER[/I][/SIZE] |
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03-22-2009
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#5 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Date Stamp on Plenum
Here is the date stamp on the plenum, anyone else seen this? Behind the DIS.
 Hard to read in the pic says...... 990 11-01-9A
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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03-22-2009
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#6 | |
 
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: Date Stamp on Plenum
Quote:
BK? I'm not seeing that. I see J840
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[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
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03-22-2009
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#7 | |
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Join Date: Dec 2007
Location: Reston, Virginia
Posts: 939
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Re: Date Stamp on Plenum
Quote:
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Michael :cheers: [I][SIZE="2"]1990 RED on RED #566[/SIZE][/I] [I][SIZE="2"]WAZOO MEMBER[/I][/SIZE] |
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03-22-2009
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#8 |
Join Date: Aug 2005
Location: Anaheim, California
Posts: 105
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Re: Date Stamp on Plenum
I found this handwritten note under the DIS module when I removed it to replace the lube/heatsink goo under there. My car has a 11/90 build date so that kind of makes sense.
I like seeing and finding little tidbits like this in our cars. There are a whole assortment of stamped codes on the left front corner of my oil pan. That was pretty intriguing. SharkPilot IMG_0042.jpg
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[CENTER][SIGPIC][/SIGPIC] 1991 ZR-1 #1135 Red/Red with both tops. Stock except for an open topped K&N filter.[/CENTER] |
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Linear Mode
