oz37k Posted February 18, 2013 Report Share Posted February 18, 2013 Hello All, I have been working on my 95 MC Z34 and took off the top intake manifold. When I went to reassemble it I noticed that I was not getting a good seal where the water inlets meet on the intakes where the engine temp sensor is (not the heater line). I tried searching but could not find what the part no for the o-ring that goes in between the upper and lower intake. Does anyone know the parts number? Thanks Quote Link to comment Share on other sites More sharing options...
Schurkey Posted February 18, 2013 Report Share Posted February 18, 2013 Take the old O-ring to the parts store, match it with one from the generic O-ring kit. I would certainly prefer a Viton o-ring, but plain old junk neoprene is what they used as OEM. About fifty cents, depending on the attitude of the parts counterman. Last one I installed, I coated it with gasket sealer--High Tack. Copper Coat, Gasgacinch, Permatex soft-setting or any similar gasket adhesive (but NOT RTV silicone) would do as well. Quote Link to comment Share on other sites More sharing options...
oz37k Posted February 18, 2013 Author Report Share Posted February 18, 2013 Take the old O-ring to the parts store, match it with one from the generic O-ring kit. I would certainly prefer a Viton o-ring, but plain old junk neoprene is what they used as OEM. About fifty cents, depending on the attitude of the parts counterman. I did notice that the o ring is flat. looks like the ones in the link below. Would it matter if I use a rounded o-ring? http://www.ebay.com/itm/FEL-PRO-70194-Distributor-Gasket-/110932850412?pt=Motors_Car_Truck_Parts_Accessories&hash=item19d41cf6ec&vxp=mtr Quote Link to comment Share on other sites More sharing options...
Schurkey Posted February 18, 2013 Report Share Posted February 18, 2013 I did notice that the o ring is flat. looks like the ones in the link below. Would it matter if I use a rounded o-ring? http://www.ebay.com/itm/FEL-PRO-70194-Distributor-Gasket-/110932850412?pt=Motors_Car_Truck_Parts_Accessories&hash=item19d41cf6ec&vxp=mtr The O-ring was NOT flat when it was new. Thus the preference for Viton, which doesn't cold-flow as readily as neoprene/buna/etc. The O-ring BECAME flat from being squeezed for years. Quote Link to comment Share on other sites More sharing options...
oz37k Posted February 18, 2013 Author Report Share Posted February 18, 2013 The O-ring was NOT flat when it was new. Thus the preference for Viton, which doesn't cold-flow as readily as neoprene/buna/etc. The O-ring BECAME flat from being squeezed for years. Thanks. Just wanted to make sure. I plan to buy the gasket set below and notice two o-rings on the kit. Is it intended for this application or is it for the famous leaking seal on LQ1's. http://www.ebay.com/itm/ACDELCO-OE-SERVICE-12507294-Intake-Manifold-Gasket-/310585880054?pt=Motors_Car_Truck_Parts_Accessories&hash=item48505c6df6&vxp=mtr Quote Link to comment Share on other sites More sharing options...
Schurkey Posted February 18, 2013 Report Share Posted February 18, 2013 Thanks. Just wanted to make sure. I plan to buy the gasket set below and notice two o-rings on the kit. Is it intended for this application or is it for the famous leaking seal on LQ1's. http://www.ebay.com/itm/ACDELCO-OE-SERVICE-12507294-Intake-Manifold-Gasket-/310585880054?pt=Motors_Car_Truck_Parts_Accessories&hash=item48505c6df6&vxp=mtr $46 for an intake gasket set? Holy crap. I bet you could get a Fel-Pro or other name-brand set for way less locally. Stop by a NAPA store, ask for FPG MS95822. http://www.napaonline.com is showing a price of $27. I've got spare gaskets sitting on the shelf I'll never use--but shipping would be a mess. The large o-ring is for coolant. I don't remember what the smaller O-ring is for. Quote Link to comment Share on other sites More sharing options...
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