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What size are the bolts on a Ford Pinto head?

Bolt Sizes for Ford Pinto Head
The bolt sizes for a Ford Pinto head are as follows:
– M8x16 finis 0240909 if Ford still have them. Or 6134901 for M8x14. The torque settings for these bolts are 20 to 25 NM (15 to 18 lbf ft).
– The torque settings for the bolts depend on the type. For spline bolts, the torque settings are:
– Stg1 – 30-41 lbft
– Stg2 – 37-52 lbft
– Stg3 (after 20 mins) – 54-61 lbft
– Stg4 (after running engine) – 70-85 Lbft
For Torx Bolts, the torque settings are:
– Stg1 – 26-30 lbft
– Stg2 – 52-55 lbft
– Stg3 – (after 5 mins) – tighten a further 90 degrees.
– The head bolt torque for Ford Pinto engines varies based on the engine size. For a 2.0/122 engine, it is 65-80 lb in increments (50-60 1st. then 80-90) in foot-pounds.
It’s important to note that the information provided is based on the available search results and may need to be verified with an official Ford Pinto manual or a trusted automotive expert for accuracy.

Do head bolts need replacing?

If the bolts show any signs of deformation, such as stretching, corrosion, or uneven surfaces, it’s generally advisable to replace them. 3. Torque specifications: Head bolts are typically designed to be used only once, as they are often designed to stretch during installation to create the proper clamping force.

What grade bolts are cylinder head bolts?

The head is Aluminum and its expansion rate is more than steel and iron, so you want something that will work with higher expansion rates. I would try to source original style head bolts/studs. Using Grade 8 washers is an excellent point.

Can I use Grade 8 bolts for cylinder heads?

It would work in a pinch. Grade 8 is 160,000 psi. I believe ARP uses 170,000 psi steel in their head bolts. Close enough for government work.

What are the head bolts on a car?

Cylinder head bolts, or engine head bolts, are used to fasten the head gasket and cylinder head to the engine block. The cylinder head bolts must be torqued to exact specifications to ensure a perfect seal and keep the engine functioning in perfect condition at all times.

What size are the head bolts on a 302?

7/16″
1979-95 Mustangs with factory 5.0 302 motors require a 7/16″ head bolt when securing cylinder heads to the block. This includes some aftermarket cylinders that are not made specifically for a 351W setup.

What size is a 302?

The Ford 302 H.O. is a high-performance “small block” 302 cu in (4.9 L) V8 engine manufactured by Ford Motor Company.

What size is the head bolts?

Hex Bolt Head Size Chart

Diameter Head Size
5/8″ 15/16″
3/4″ 1 1/8″
7/8″ 1 5/16″
1″ 1 1/2″

What do you use for head bolts?

LOCTITE Head Bolt and Water Jacket Sealant is a single-component anaerobic hybrid that lubricates fasteners during assembly, as well as seals the gaps between the threads. It eliminates corrosion, which can cause difficulties if future disassembly is required.

How do you tighten engine head bolts?

Get it on there nice and firm. And we’ll give it a pull until we go to 10. See how loose that is I’ll reset it so that we need a tightening we’ll go till it says 10.. All right that’s perfect.

What is the bolt in the engine head?

Cylinder-head bolts are the connecting elements between engine block, cylinder-head gasket, and cylinder head. The bolt tightening force is an important factor for the mutual sealing of combustion chamber, lubricant and coolant channels, and the ambient air.

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