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hf and dx cranks.. Whats the difference

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Old 01-26-2004, 10:16 AM
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Default hf and dx cranks.. Whats the difference

Anyone know what the difference is between the 88-91 crx dx and 88-91 crx hf crankshafts.. They have different part numbers but I dont see what the difference could be between them..
Old 01-26-2004, 10:44 AM
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Default Re: hf and dx cranks.. Whats the difference (tgreaves)

I know some year HF crankpulleys are smaller or lighter, forgot which, but it may be a different end bolt or end diameter or something to that effect?
Old 01-26-2004, 11:13 AM
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Default Re: hf and dx cranks.. Whats the difference (owen_the_soyboy)

Hmm.. Im just trying to figure out if D15B2 rods and pistons will go into a D15B6(hf) block with the hf crank..
Old 01-27-2004, 01:44 AM
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Default Re: hf and dx cranks.. Whats the difference (tgreaves)

won't work.

D15 16V uses 45mm rod bearings
HF uses 42mm rod bearings

Also the HF crank is lighter, doesn't have the counterweights.

Old 01-27-2004, 05:47 AM
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Default Re: hf and dx cranks.. Whats the difference (Mista Bone)

****.. Will d15b2 rods, pistons, and a crank fit into the d15b6 hf block..
Old 01-27-2004, 12:11 PM
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Default Re: hf and dx cranks.. Whats the difference (tgreaves)

yes, the main bearings are the same size.

FYI Bisimoto ran a D15B6 block to 10.77 in the 1/4 mile.
Old 01-27-2004, 12:36 PM
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Default Re: hf and dx cranks.. Whats the difference (Mista Bone)

Well then the only difference between the b2 and b6 bare block is the engine code stamp on the outside of the block..
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