Ford 144-250 inline 6 high performance building
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For example, if you want a flat top piston there is none available for a 200, but a 2.3L HSC Ford tempo piston is a high swirl flat top piston with the same 3.680 bore size as the 200. The only difference is the 2.3 HSC pistons have a .090 pin offset, and the 200 pistons have a .060 offset. However, they still work fine, and are available oversize up to .080 from Speed Pro. | For example, if you want a flat top piston there is none available for a 200, but a 2.3L HSC Ford tempo piston is a high swirl flat top piston with the same 3.680 bore size as the 200. The only difference is the 2.3 HSC pistons have a .090 pin offset, and the 200 pistons have a .060 offset. However, they still work fine, and are available oversize up to .080 from Speed Pro. | ||
| − | When working on the cylinder heads on the older engines ( 1960-1968 ) the '60-'68 heads do not flow well. Replacement '69 up heads are better, particularly D8 and E0 casting heads, which would come in 1979-1983 model years. These heads have 1.75 Int valve/ 1.36 Exh which can be machined to 1.5. The drawback to these heads is the chamber size is 62cc, '60-'68 heads are 52cc, so compression drops approximately 1 point. There are also Australian cylinder heads with removable intakes that can be got, but they are expensive to get. There is an aftermarket | + | When working on the cylinder heads on the older engines ( 1960-1968 ) the '60-'68 heads do not flow well. Replacement '69 up heads are better, particularly D8 and E0 casting heads, which would come in 1979-1983 model years. These heads have 1.75 Int valve/ 1.36 Exh which can be machined to 1.5. The drawback to these heads is the chamber size is 62cc, '60-'68 heads are 52cc, so compression drops approximately 1 point. There are also Australian cylinder heads with removable intakes that can be got, but they are expensive to get. There is an aftermarket '''Aluminum head''' developed from the Australian head available from ClassicInlines.com |
Originally, Ford used a steel shim head gasket that was .025 compressed, these are no longer available, what is available today ranges from .045-.055 compressed, so the cylinder head must be machined at least .025 to make up the difference, but if you got the larger 62cc chamber, it would need to be machined out a bit more- owner determined depending on desired comp ratio but it can get milled .090 as a max. | Originally, Ford used a steel shim head gasket that was .025 compressed, these are no longer available, what is available today ranges from .045-.055 compressed, so the cylinder head must be machined at least .025 to make up the difference, but if you got the larger 62cc chamber, it would need to be machined out a bit more- owner determined depending on desired comp ratio but it can get milled .090 as a max. | ||
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