[Fot] Chevy rods/Moldex crank

[tr4 at wi.rr.com]

This topic has come up several times.  I have a fair number of friends who own speed shops and are great high performance engine builders.  The consensus among all of them is to not do this unless you have a crank made with narrower journals to create a big end to journal side clearance of no more that .006”.  The idea with this and why all manufactures use close side clearance is to create a healthy dose of oil spray onto the cylinders, pistons and cam shaft.  If you use the chevy rod on a standard Triumph journal you have a side clearance of over .100” and all the spray just directs horizontally which does not help a thing.  I have yet to find any engine spec that lists anything over .010” in all my 70+ years.

 

My opinion and I’m sticking to it!

 

Steve Yott

 

From: Fot <fot-bounces at autox.team.net> On Behalf Of Lorne Fritz via Fot
Sent: Thursday, November 2, 2023 3:13 PM
To: fot at autox.team.net
Subject: [Fot] Chevy rods/Moldex crank

 

Hi, Could anybody tell me what rods you are using on a Moldex crank that is sized for a Chevy rod.  This is for a TR3/4 engine.  Pat number, size or application would help.   Thanks in advance.   Lorne

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20231102/e6a57afb/attachment.htm>