MG-Cars.info

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

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 MGB GT V8 Factory Originals Technical - camshaft wear

I've noticed that on both my 63 buick 215 engine and my 70 Rover 3.5 engine that the camshafts are worn the same areas. The 7th and 8th lobe from the rear of the shaft and lifters show heavy wear. Is there a modification to correct this problem? I'm in the process of a rebuild on the Rover engine and would like to make the change now.

Kelly
Kelly

Have a look at Philip Shingler's and others responses on the thread here " Advice on buying a GT V8 in the UK " ...

Appears a worn oil pump causes extra wear in that area of the camshafts.

John McF.
John McFeely

Kelly,
To elaborate a little on John's comment, there are two books that I've read that deal with improving the oil system of Buick V6 engines. Yes, I know, but your V8 is where the six came from...
How To Hot Rod Your Buick V6 Engine; by HP Books, #149
V6 Performance by Pat Ganahl; SA Design Books, #13
Another option is to apply a dry film lubricant coating to your engines internals, as sold by TECH LINE.
Randy
Randy Forbes

Hi Kelly

Hane a look at RPI engineering's website on the FAQs page http://www.rpiv8.com/faq-gen.htm My gut response to seeing this problem on my own engine was that the reason the back lobes wear is that this is the highest and furthest point from the pump, hence these hydraulic lifters get the least pressure and thus the least lubrication. RPI site has notes on a TVR that had chewed up its camshaft after only 40k miles

Philip
Philip Shingler

This is a common problem on engines that do very short journeys 30k miles will see the need to replace the shaft and lifters. At the opposite end of the scale 200k plus miles will be achieved on the standard parts on engines that do high mileages or are used very frequently with little down trimes to cool.

The problem has more to do with oil viscosity and sludge build up that restricts oil flow to the end of the cam and end lifters.

Rog
Roger Parker

Thanks for the replies. I'll look into all of these. The Rover engine is from a 3500 showing only 42K on the clock. You're probably right about the short trips on this one.
Thanks again

Kelly
Kelly

This thread was discussed between 05/04/2000 and 07/04/2000

MG MGB GT V8 Factory Originals Technical index

This thread is from the archives. Join the live MG MGB GT V8 Factory Originals Technical BBS now