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Speedy engine big end bolts

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Speedy engine big end bolts
Zetomagneto Offline
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#3
02-03-2018, 01:53 PM
(02-03-2018, 01:33 PM)Dave Wortley Wrote: Not a great design of bolt  having a hole drilled for the pin at the corner (already big stress raiser.) Surely nothing wrong with standard bolt registering on the flat of the head against conrod.

Dave, exactly my thoughts.On a Speedy/Nippy Conrod there is no "flat" hence the pin under the head.
12/4 Conrods use the same design but at 3/8" Dia.

Steve,Would capheads with all metal locking nuts be acceptable?

Or you could use Austin 10 bolts which are 5/16 dia but longer than standard seven bolts, they have a locating flat like a seven, no pin.Instead of drilling the pin hole at right angle to the length you could drill through the top of the head.

Sure fire solution would be Phoenix crank and rods, and peace of mind if you have a proper speedy crankcase, wouldn't want break one of those
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Messages In This Thread
Speedy engine big end bolts - by Steve Berg - 02-03-2018, 11:09 AM
RE: Speedy engine big end bolts - by Dave Wortley - 02-03-2018, 01:33 PM
RE: Speedy engine big end bolts - by Zetomagneto - 02-03-2018, 01:53 PM
RE: Speedy engine big end bolts - by Steve Berg - 03-03-2018, 04:30 PM
RE: Speedy engine big end bolts - by Ian Williams - 03-03-2018, 06:54 PM
RE: Speedy engine big end bolts - by Steve Berg - 04-03-2018, 01:59 PM
RE: Speedy engine big end bolts - by Zetomagneto - 04-03-2018, 09:23 PM
RE: Speedy engine big end bolts - by Mark Dymond - 04-03-2018, 02:15 PM
RE: Speedy engine big end bolts - by Ian Williams - 04-03-2018, 08:42 PM
RE: Speedy engine big end bolts - by Steve Berg - 09-03-2018, 05:13 PM
RE: Speedy engine big end bolts - by Bill Sheehan - 03-05-2018, 01:16 AM
RE: Speedy engine big end bolts - by Bill Sheehan - 05-02-2019, 02:02 AM
RE: Speedy engine big end bolts - by Ian Williams - 09-03-2018, 06:53 PM
RE: Speedy engine big end bolts - by Steve Berg - 01-05-2018, 06:25 PM
RE: Speedy engine big end bolts - by Ian Williams - 01-05-2018, 09:10 PM
RE: Speedy engine big end bolts - by Steve Berg - 07-05-2018, 10:07 AM
RE: Speedy engine big end bolts - by Ian Williams - 07-05-2018, 10:20 AM
RE: Speedy engine big end bolts - by Steve Berg - 08-05-2018, 06:34 PM
RE: Speedy engine big end bolts - by Colin Wilks - 03-02-2019, 11:09 AM
RE: Speedy engine big end bolts - by Steve Jones - 03-02-2019, 04:44 PM
RE: Speedy engine big end bolts - by Colin Wilks - 03-02-2019, 05:47 PM
RE: Speedy engine big end bolts - by Chris KC - 03-02-2019, 05:51 PM
RE: Speedy engine big end bolts - by Jeff Taylor - 03-02-2019, 07:28 PM

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