March 29, 200719 yr Hi, I've got a 98 Leg OB with 140,000+ miles and a couple of questions. I started out another thread, "Steel piston transplant" with this question, but thought it would be better to title this question under another title since I decided against having the engine rebored and pistons replaced. Since I added an oil additive that increases viscosity I've not had piston slap problems and so I'm guessing that the gap might not be too bad. So never mind on the rebore and pistons. HOWEVER... I plan to get some work done on my 98 Leg OB, ie. head gaskets:-\ , shims adjusted, clutch, oil seals, and timing belt. Well, here's the list. Am I forgetting anything....? Cylinder head gaskets Intake manifold Gaskets Exhaust manifold gaskets Valve cover gaskets Valve stem seals Valve cover grommets Cam Shaft half moon plugs Valve cover SP tube gaskets Cam Seals Oil Pump Seal kit Timing belt Water pump Rear main seal Thermostat oil filter NGK Platnum plugs A metal rear inspection plate 4 piece clutch kit Exhaust gaskets, donut and hardware One more Q: Would it be beneficial to replace the rings too?
March 29, 200719 yr That's a pretty good list. Does anyone make a head gasket kit that would include most of these parts? Have you costed this out yet? If you didn't have an oil burning problem previously, I wouldn't think the rings would need replacement yet.
March 29, 200719 yr Author 2x2KOB, I've got a price, but am waiting to see if subiegal can get these OEM. I've been going through oil Since the head gasket blew, but prior to that, it was doing pretty good after it got used to the full synthetic 5-30. The plugs looks OK when I changed them prior to the head going, but took 5-10k (second oil change) before I had to quit adding at least half a quart per week. I guess I'm wondering if replacing rings would help at all without doing valve job, boring and replacing pistons. A non-dealer subi specialist garage will do the rings total for $225. To rebore oversize w/new rings pistons, labor would be $415 total. Plus I guess my gas mileage would drop, so I don't want to do that, but might be able to swing the rings only if it would be a significant improvement. eq
March 29, 200719 yr Do the valve job, dont worry about the rings. These engines seem to be fairly robust. If you do do the rings, then you have to hone the cylinders, and might as well get the new pistons that correct the slap... then your into new engine territory. nipper
March 31, 200719 yr Author Water cross-over pipe o-rings Emily http://www.ccrengines.com Thanks Emily, I missed that. nipper, That's what i expected too. Thanks for the confirmation.
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