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terryjm1
Terry Merrell

(4 posts)

Registered:
02/27/2010 01:06PM

Main British Car:


Rover 4.6 connecting rod bolts
Posted by: terryjm1
Date: February 13, 2020 09:05PM

Are Rover 4.6 connecting rod bolts reusable or are the stretch bolts?


minorv8
Jukka Harkola

(190 posts)

Registered:
04/08/2009 06:50AM

Main British Car:
Morris Minor Rover V8

Re: Rover 4.6 connecting rod bolts
Posted by: minorv8
Date: February 14, 2020 02:56AM

The torque sequence points to stretch bolts: 20 Nm and then additional 80 degrees. However, the factory manual from 1998 (LRL0004ENG 3rd ed., applicable to engine codes 42D, 46D-51D) states that during disassembly, keep the rod, cap and bolts in their respective position. It does not mention anything about replacing them during assembly.

For head bolts, the manual states that "fit new bolts".

I have used the same bolts but with the last short block, I noticed that some used bolts felt a bit funny when torquing the final 80 degrees. To be safe I replaced them. They are around 5 bucks a piece. Not that expensive for a piece of mind.


MGBV8
Carl Floyd
Kingsport, TN
(3829 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Rover 4.6 connecting rod bolts
Posted by: MGBV8
Date: February 14, 2020 09:52AM

Yes, they are stretch bolts.


donkelly23
Don Kelly
Charleston, SC
(117 posts)

Registered:
07/21/2011 05:13PM

Main British Car:
1980 TR7 V8 Z28 FI ECM 4.0

Re: Rover 4.6 connecting rod bolts
Posted by: donkelly23
Date: February 14, 2020 11:55AM

May I ask if the ARP bolts for the flywheel are stretch bolts?


Blown v8
Bryan Phipps

(59 posts)

Registered:
03/10/2013 04:52PM

Main British Car:


Re: Rover 4.6 connecting rod bolts
Posted by: Blown v8
Date: February 14, 2020 04:35PM

ARP bolts for the flywheel are not stretch bolts


donkelly23
Don Kelly
Charleston, SC
(117 posts)

Registered:
07/21/2011 05:13PM

Main British Car:
1980 TR7 V8 Z28 FI ECM 4.0

Re: Rover 4.6 connecting rod bolts
Posted by: donkelly23
Date: February 14, 2020 05:37PM

Thanks


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