Cross drilled crank

[mikew]

Can some one tell me if all Sprint cranks were cross drilled ?

I have finalled stripped the water seized engine I bought and reclaimed the parts I wanted - water pump, jackshaft and a few other items, and found the crank is cross drilled - I wondered if they stopped cross drilling (like on the early 2.5 6 pots) later in production - the crank is good at -10 and wondered if it was worth keeping.

[xvivalve]

No, not all were cross drilled and yes, its well worth keeping!

[mikew]

No, not all were cross drilled and yes, its well worth keeping!

Thank you

[Jon Tilson]

If the jackshaft has no play in the block then I'd keep the block too.

Jonners

[mikew]

If the jackshaft has no play in the block then I'd keep the block too.

Jonners

The block will need a 40 thou over bore and I'm not too keen on that - doesn't leave much meat in the firerings, but I get you point, could always liner it

[Jon Tilson]

If you can find good 40 thou pistons I'd go for it. You can always ask the guy who makes head gaskets to do you
one to match.

jonners

[dailysprinter]

I've run +40s on my modified sprint and I've not had any problems.