[Tigers] weakness

[Ron Fraser]

Jim is correct.

 

Ford introduced the aluminum cam gear with nylon teeth in March 1965.   It was prone to failure with high mileage or age.

 

Most B19KC engines probably have the aluminum gear and all Mk II 289 engines do have the aluminum gear.

Basically if your engine was assembled from March 1965, 5Cxx assembly date code stamped into the block, onward you have an aluminum cam gear.

Most of the B19KC engines have a 5Kxx assembly date code so they have the aluminum gear.

 

The Tiger 260 and 289 engines are a great touring car engine.   If you want more than that you need to build an engine with your expectations in mind.

You also need to understand that the Tiger Chassis and suspension is just barely adequate for the basic original Tiger engine.

Ron Fraser

 

From: Tigers <tigers-bounces at autox.team.net> On Behalf Of James Armstrong via Tigers
Sent: Monday, May 04, 2020 7:25 PM
To: robertdhogan at gmail.com
Cc: tigers at autox.team.net
Subject: [Tigers] weakness

 

Hello

 

The cam drive gear on my engine (and yours) had nylon teeth that lost four teeth as I pulled quickly out of a stop-light. Timing chain skipped. On later Small Blocks, Fords dispensed with the nylon teeth (noise abatement) as they failed over time. Since the engine was way out of time, the result was a piston that came in contact with a valve, broke the valve,which rotated and split the piston, etc. I was fortunate in that I was able to save the block, crank, and both heads.

 

Bottom line: if you haven't done so, change that verdamt cam gear and chain while you're at it.

 

Jim Armstrong

Mk 1A

382002083 LRXFE

Code 86

TAC #....

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