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06-29-2008, 06:45 AM
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#11 (permalink) | |
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Moderator
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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To answer the question, you can pull the head with the turbo and manifold connected to the head. You will need to drop the downpipe and remove the rear o2 housing, or at least disconnect it and let it sit off to the side.
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- 94 R/T Turbo
- 93 VR-4 - 94 R/T -  |
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06-29-2008, 06:50 AM
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#12 (permalink) | ||
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Former ROTY :-}
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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06-29-2008, 06:56 AM
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#13 (permalink) |
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220K club
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Re: 1991 RT/TT - First Failure in 230K / 17 years
Clint, sorry to hear your loss but yours went 5K more than my oem original engine...same problem too. I put in a Rockville OEM short block but reused the rear bank's 99 lifters that had 30K are them and they gave up at the NG.Now it's rear bank work..bah__
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'92 R/T TT 236 K mileage club
AEM EMS, Twin TD-O5 MHI EVO 16G, Electronics: AEM ems, FJO dual WBO2, GaugeTech AEM ems display, custom made EL type main gauge faces, [/size] |
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06-29-2008, 08:48 AM
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#14 (permalink) | |
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Member: Burned valve club
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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Not sure I know what the problem is with mine yet. What happened to yours at 225K? All I know is that mine suddenly got noisy but did not change for ~150 miles. Then I reset timing that was off a couple teeth on rear bank which made no difference to noise and then it got a lot worse within 2 miles - I pressed in clutch - engine bogged down and stalled. Sound sure seemed to be top end noise not deep engine knocking so I am still leaning towards slipped timing leading to a valve strike or collapsed hydraulic lifer and not a spun bearing. My dilema is that this is my daily driver and I don't have any extra time to screw around with it right now. I am still tempted to re-time the motor and re-start it to see if the sound is still present. (Although obviously a waste time if I have spun a bearing.) Clint
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1991 Stealth RT/TT - Firestorm Red - 193K Miles / Original Owner
Maint: Castrol 10W40 / Mitsu Filter / Rislone Replaced: 2X clutch / 3X brakes / 2X front rotors / 2X ABS HU / 1X NGK Plugs / 1X Ball joints / 2X Antenna mast / 1X Active exhaust cable / 1X Windshield / 1X Fuel FIlter / 1X Struts / 1X rear rotors / 1X Front Head / VSS / 1X rear wheel bearings / 1X Transfer case (warranty) / 1x Tie rod end (drivers side) Overhauled: Starter, IAC, BISS, CV Boots Upgrade: SilverStar Headlights / ebay "Xenon" Fog Bulbs (no more yellow!) A/F Gauge / MAP - Electronic Boost Logging / MMCd Data Logger Pending Projects: Steering Rack |
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06-29-2008, 08:52 AM
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#15 (permalink) | |
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Member: Burned valve club
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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Anyone feel like pressuring one of their front cylinders with valves closed to see if it is 100% quiet or if there is a little hissing. Clint |
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06-29-2008, 11:09 AM
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#16 (permalink) |
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Damage Control
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Re: 1991 RT/TT - First Failure in 230K / 17 years
I didnt see it mentioned but are you sure it was valve train noise?
My TOB was making a HORRBLE racket and when I depressed the clutch, it stalled. Being the timing only jumped 2 teeth I'd have a hard time beleiving you bent valves.
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 Kbizzle [11:25 P.M.]: this is most displeasing |
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06-29-2008, 11:13 AM
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#17 (permalink) | |
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Forest Gump
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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It makes perfect sense because even on a perfect engine you are going to have some leakdown. Judging by my not so scientific leakdown test I would estimate my leakdown between 5 and 10%
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 Power: DSM 13G/DR650 Combo, EVO 560cc injectors, SAFC I, K&N, Ebay Downpipe, ATR Dual Catback, no cats, DN Y-Pipe, HKS SSQV, HKS EVC 5 at 14.5PSI, Walbro 255 with AN Bulkhead 8.07 @ 85.55 1/8th mile 1.84 60FT Suspension: KYB GR-2 - Tein S-Techs, Crossdrilled/slotted rotors, AWS Delete Drivetrain: RPS Street Max, M.W. 300m O/S, Seattle F&R Poly Mounts, EK2 ExoCage Etc: Roller Bearing Short Shifter Smokinvr-4 Corner box, 10" Rockford Fosgate Punch sub, Eclipse Headunit Leatherseats.com Charcoal/Dove Grey Interior, 99 front end/lights/wing/sideskirts/doorcapsm Scanmaster 3 Maintenance New VSS, all 60K stuff, new 1st,2nd, 3rd syncro, trans seals, oil pump, rod and main bearings. Mobile 1 10w40, Redline MTL in trans, 85w90 Coastal GL5 in transfer case and rear |
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06-30-2008, 04:03 AM
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#19 (permalink) | |
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Member: Burned valve club
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Re: 1991 RT/TT - First Failure in 230K / 17 years
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(Very different from when I attempted to pressurize cylinder when I had a shattered valve.) Clint |
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06-30-2008, 05:13 AM
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#20 (permalink) |
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Forum Member
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Re: 1991 RT/TT - First Failure in 230K / 17 years
I just noticed this thread. Back when I was replacing my VSS, mine made a hissing sound when I applied pressure to cylinders also. It seemed to be leaking past the rings, not valves. The engine was cold, which I imagine made it worse. Your engine is cold also, I would assume
 Good luck. No fun when things like this happen to daily driver. How many miles on your timing belt tensioner? (the device with spring and plunger). Mine was shot at 150k. not sure if it was original or not.
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-Ron
'91 Stealth TT purchased Aug 2004  |
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