Connecting rod bolt

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Phil Warlow
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Connecting rod bolt

Post by Phil Warlow » Thu Mar 08, 2018 4:20 pm

I just purchased this Mac 91 engine and it has this style of connecting rod bolt. I think it's a RIBE drive type. Any idea where I can find a socket to fit it?
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roger santee
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Joined: Mon Jan 28, 2008 7:58 am

Re: Connecting rod bolt

Post by roger santee » Thu Mar 08, 2018 4:56 pm

Those are 101 rod bolts. I don't know of any sockets for sale. Might try to borrow one from someone close by.

REAR
Posts: 686
Joined: Sat Jun 16, 2007 10:19 am

Re: Connecting rod bolt

Post by REAR » Thu Mar 08, 2018 6:18 pm

Phil,

Try your local Autozone. Take the motor with you so you get the right fit. If that don't work out track down a Snap-On or Mac dealer.

Good luck and keep us updated on what you find because if you need it chances are others do also.

R.E.A.R.

Rob Voska
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Re: Connecting rod bolt

Post by Rob Voska » Fri Mar 09, 2018 6:27 am

The bolts are still made so they have to make sockets. It's a straight splined socket.
Try Terry Ives.

Phil Warlow
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Re: Connecting rod bolt

Post by Phil Warlow » Fri Mar 09, 2018 9:25 am

Thank you!

steve welte
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Re: Connecting rod bolt

Post by steve welte » Fri Mar 09, 2018 9:26 pm

I'm looking more at the unusual crankshaft you have in the engine

REAR
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Joined: Sat Jun 16, 2007 10:19 am

Re: Connecting rod bolt

Post by REAR » Sat Mar 10, 2018 7:05 am

Steve,

That crank looks like a full circle crank that was ground to clear the stuffer. Should of been the other way around. Doubt it was rubbing the stuffer, would of had the exhaust note of a drum set.

R.E.A.R.

Paul Booth
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Vintage Karting items owned: 18 vintage karts
30 + McCulloch motors

Re: Connecting rod bolt

Post by Paul Booth » Sat Mar 10, 2018 10:41 pm

Hi Rob,
Do you know of a company selling the 101 splined rod bolts? Here is a little info on the tools for them. The l-handle and the socket were made by Allen wrench company.
Part # 1620-09 for the 1/4" socket.
Part # ST1620k-09 for the l-handle with the socket on the short end.
Maybe somebody can find a stash using the part numbers.
Go fast and have fun
Paul

Paul Booth
Posts: 15
Joined: Sat Jun 16, 2007 11:21 pm
Vintage Karting items owned: 18 vintage karts
30 + McCulloch motors

Re: Connecting rod bolt

Post by Paul Booth » Sat Mar 10, 2018 10:45 pm

Guys,
The tools were called Allen super- torq.
Paul

david a luciani
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Re: Connecting rod bolt

Post by david a luciani » Thu Mar 15, 2018 9:11 am

you should seriously consider ditching that crank or replacing the outer ring of the circle.
there's a clearly visible crack on the top ring encircling the crank bell..
that's ready to let go and it wouldn't go well for the inside of your motor.
the conn rod bolts have become a problem to get.
several people are shopping prices to find a source that doesn't cost 40 bux each.
dave l

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