Subject	Anyone replace rod bearings with heads still on?
Posted by	bartz32tt on March 20, 2014 at 10:53 AM
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Message	I bought a used 104k mile USDM TT engine from a reputable guy. compression test came out well and I can tell he took great care of the engine - the exterior is super clean and just about every gasket is new. Timing belt components are all new too. Before I drop this into my Z, I've been tossing around the idea of changing out the rod bearings first. Seems like cheap insurance ($50) and I've rebuilt diesel engines that were fully disassembled, just never an engine with the head still on. I know how to use plastigauge and own all Snap-On tools including a torque wrench. My concern is whether there's ample clearance for a proper install and whether I'm putting anything else at risk that I'm not thinking of. Oil pan already has to come off anyways to get the oil cooler line nipple welded shut (going full-flow instead). Anyone with experience care to share their opinion? ________________Sig Separator________________________ Parting out my entire 1990 twin turbo! Please email me for needed parts! See profile for my WTB/WTT list as well.
Follow Ups	Anyone replace rod bearings with heads still on? - bartz32tt 10:53:08 03/20/14 Anyone replace rod bearings with heads still on? - Barry(TN) 11:06:24 03/20/14 Thanks for the reply. Could you please elaborate on - bartz32tt 11:15:22 03/20/14 Whats your experience level? - -Grimm- 12:51:42 03/20/14 There is plenty of room with the heads on. A couple of - michaell32 (FL) 12:05:28 03/20/14 Skip OEM Bearings - -Grimm- 12:50:04 03/20/14 Weird. Did you add correctly? Mine were spot on. (n/m) - ZXRider 14:15:49 03/20/14 Same here. Bearing clearances were in spec. Every - michaell32 (FL) 15:23:12 03/20/14 Good point on the bearing grades. I'll try the OEM's first - bartz32tt 15:30:00 03/20/14 If by add you mean... - -Grimm- 17:38:15 03/20/14 Take a deep breath - ZXRider 18:06:04 03/20/14 I used the FSM - -Grimm- 19:18:14 03/20/14 I thought I could do this, however... - ttsmokin 19:46:06 03/20/14 What was everyone's take on replacing the main bearings? - Tanley 16:48:02 03/20/14 Normal wear - -Grimm- 17:40:48 03/20/14 Crankshaft doesn't have to come out? - bartz32tt 22:37:34 03/20/14 You'll have to remove all that to remove the oil pump - -Grimm- 23:51:11 03/20/14 Gotcha. I'll prob pass on the main bearings. - bartz32tt 08:01:17 03/21/14 Good call. At some point you have to draw the line - ZXRider 13:31:00 03/21/14 Cool, good to know there's plenty of room. - bartz32tt 13:50:57 03/20/14
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