HR front end.

[jimavati]

Hi all, I am in need of some info please. I have fitted a HR disc brake front end on my FC and used all rebuilt HR parts. I have just finished putting the rebuilt motor and gear box back in and all is looking good until I turned the steering wheel and the Drag Link is hitting the grey motor sump. Totally set back by this and not sure what to do. What is best to do. Can I replace the HR drag link with the original FC drag link and will it work or is there another solution. As I said totally frustrated and feel like just walking away. Help please. Jim.

[ardiesse]

Jim,

Yes, you can use the original steering linkages.  But it sounds to me like you need to check the front-to-back slope of the engine and transmission first.  (I'm assuming your engine and transmission are both stock here . . . )

Take your air cleaner off and put a spirit level on top of the carburettor.  Ideally it'll be level.  Sloping down to the front is bad.

The rear extension housing should have about equal clearance to the no.1 body crossmember at the top and the gearbox crossmember at the bottom, about two fingers' worth if I remember right.  If the rear extension housing is too close to the body at the transmission tunnel, you'll need to put a spacer between the front engine mount plate and the engine mount (and longer bolts too).

Aged or perished rear engine mounts will make the motor and gearbox sit down too low at the rear.

You "just" need to move the engine and transmission upwards and backwards to clear the HR drag link.

Rob

[Errol62]

Answered this on Facebook…..


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[Dr_Terry]

Yeah, that was a common issue with that swap. Rebuild & use the original FC steering linkage.

The problem is that the HR draglink was designed to clear the sump bulge, which is forward in the HR, but behind it in the FC.

Dr Terry