MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGF Technical - Cams

What is the effect of running a cam with a smaller base circle than standard?
Steve Ratledge

The tappets have to take up more slack (assuming the same lift)
Will Munns

Does that led to more noise, wear, short life etc?
Steve Ratledge

the tappets should pump up and remove the slack. (within reason!)

Whay do you ask - Looking at a regrind?
Will Munns

Thinking about using a pair of Piper re-profiled VVC exhaust cams fitted to a 1.8i flowed head. (One as exhaust the other on the inlet).

With a duration of 264 and a lift of 9.86 they would appear to be a good choice, but they have a smaller base circle than standard. Presumably this is as a result of the re-profiling.

I have the option of buying them at a good price.
Steve Ratledge

Sounds interesting Steve, would that mean selling the TF135 cams on?

BTW - I can't remember if I told you or not, but the provisional cam swap day will be Sunday 5th June at Chez Bell... :o)
Rob Bell

Thanks Rob - I put it on the calendar.

Re:Cam - just weighting up the options. If I went for the VVC cams I would definatly sell on the 135 cams.

But I need to understand the performance and other effects from taking this route.

Is Dave Andrews out there?
Steve Ratledge

This thread was discussed on 25/05/2005

MG MGF Technical index

This thread is from the archives. Join the live MG MGF Technical BBS now