Head gasket
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==How to differentiate the top and bottom of a head gasket== | ==How to differentiate the top and bottom of a head gasket== | ||
Ideally you would install the new gasket the same way as the one your replacing. But if you didn't look closely enough during disassembly then make sure that the coolant, bolt and cylinder holes line up properly. | Ideally you would install the new gasket the same way as the one your replacing. But if you didn't look closely enough during disassembly then make sure that the coolant, bolt and cylinder holes line up properly. | ||
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| + | ==SBC head gasket applications== | ||
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| + | ===Other than 0.041" compressed thickness=== | ||
| + | Many SBC head gaskets are going to have at least a 4.090" gasket bore diameter, so are usable on a 0.060" over 4" block. | ||
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| + | *FelPro's FEL 1094 is a steel shim with a 4.1" gasket bore diameter and 0.015" compressed thickness, if you've got super flat surfaces on the deck and head, this is a great gasket. It does not tolerate the engine being overheated. | ||
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| + | *GM 3830711 is also a steel shim with a 4.1" gasket bore diameter, and is 0.026" thick. Good flat surfaces are required, same rules apply as the Fel Pro above. This is the GM production gasket for '''non''' 400 bore SBCs. Simple and low cost. | ||
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| + | *GM 10105117, this head gasket is a multi-layered stainless steel gasket with a 4.1" gasket bore diameter, is 0.028" thick, works with iron or aluminum heads, good for holding back high compression, and tolerates some surface irregularities in the deck and head surfaces. This is the “revised” gasket, see [http://www.thirdgen.org/techboard/tech-general-engine/269378-head-gasket-thickness-gm.html post #23]. | ||
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| + | *GM 14096405, it has stainless faces over a graphite core, 4.1" gasket bore diameter and 0.028" compressed thickness. This thing hangs tough on uneven surfaces and puts up with high compression ratios. Good for iron or aluminum, this makes a good race engine gasket as it's very tolerant of engines running very hot. It lets the block and head move around to adjust for their temperature differences without breaking its seal. | ||
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| + | ==Other possibilities (nowhere near a complete list):== | ||
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| + | ===Composite type=== | ||
| + | Victor Reinz Nitroseal p/n 5746, has a compressed thickness is 0.025", 4.1” gasket bore diameter. NAPA carries Victor. | ||
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| + | ===Shim type=== | ||
| + | *Jegs p/n 210044- Embossed Shim w/ Rubber Coating. Bore 4.150", compressed thickness is 0.024". | ||
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| + | *Mr. Gasket p/n 1130 0.018”- 0.020” compressed thickness, steel embossed w/coating. | ||
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| + | There are several thinner coated shim type gaskets like: | ||
| + | *Fel-Pro Q1094- SBC 307 327 350 283 #1094. Used in some sportsman drag race and flat top oval track categories. Rubber coated steel shim, 4.100 in. gasket bore diameter, 0.015" compressed thickness. | ||
==Further reading== | ==Further reading== | ||
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