Camshaft Camshaft Camshaft

[TVRTRICEY]

Yes the easy out was discussed, but we'd need a decent drill bit to get into the remaining thread I'd expect. The welding idea sounds pretty good to me actually, Fingers crossed we'll get it out. Thanks for the tips!

[TVRTRICEY]

Thanks very much for the offer but we managed to punch the rest of the stud round this morning, so it must have been the fact I didn't release the head progressively enough. I have two haynes manuals for the Rover 3500 76-79 and 76-86 I think. Both have completely different tightening sequences for the heads! I chose the more progressive looking one after noticing. Anoyingly this was after i'd broken the bolt, but its out now anyway.

Pistons and crank all out now too so time to get measuring. All the big ends bar 1 were ok but all the mains are scored up like the shot I posted.

Thanks for all the help so far.

Tricey

[TVRTRICEY]

Afternoon,
Thinking of putting a piper 285 can in the car, think it will still work ok with the slandard management system? I already have a rising rate pressure regulator.
Any thoughts would be great.

Does anyone know where I could get my block chemically cleaned?

Going to be undertaking a full engine rebuild apart from a crank rebuild and replacement pistons, every other bearing will be changed pretty much, so much for the cam swap!

Tricey.

[TVRTRICEY]

Hi, cheers for that.
I have now decided to replace the cam bearings, as there are signs of some scoring, and its silly not too at this stage. I will probably be getting someone to clean the block and fit the cam bearings, so I can continue with the rest of the build myself. Haven't decided on who will be doing the job yet.
Tricey

[TVRTRICEY]

Hello again,
Im back on the rebuild, finally. Ive managed to remove the two hex core plugs that reveal the galleries bellow the tappets. Im struggling to remove some of the smaller interference fitted ones however. Any help or guidance will be much appreciated. Once Im happy the galleries are good with an airline etc. It will be going off for a final hot wash and all the cam bearings will be replaced. Then I can start building!

Many Thanks in advance.

Tricey

[TVRTRICEY]

Good, these were going through my head too but good to have it confirmed.

Many thanks!

[TVRTRICEY]

Update for anyone is interested...

Block is back from the machine shop - New cam bearings fitted, Hone and Clean... Looks a lot better than it did before!



Should have all pistons back in tomorrow too



Ended up getting a 3.9 Cam to go in so looking forward to seeing how that performs Got nearly all the bits I need to do the engine job now so bring on the summer deadline!

[TVRTRICEY]

Some information some of you may find interesting.
So back onto the engine rebuild recently (trying to finish the car next weekend for Silverstone Classic) and today after put the heads on and rebuilding the rockers with new shafts, for the first time I could turn the engine over and see what was what. All good.

Doing a lot of research into building rover v8's I wanted to shim the rocker posts so bought a kit to do this. It's SUCH an imprecise science to measure between the top of the internal part of the lifter and the bottom of the cir clip. With no shimming at all (as if from factory), the tolerance I could measure came to a whopping 220 thou vs the 40-60 recommendation from the 'real steel' kit. I should at this point mention the heads are stage 3 and must be skimmed a fair bit. It took a fair bit of shimming under the rocker posts to get the tolerance in sight.

when I took the engine apart due to the huge cam failure I was unsure as to why it had happened at the 81k mileage although mileage. From what I could gather the stage 3 heads were fitted at 79k, so had in theory only been on the engine for 3K miles.

I really think that the lack of shimming meant the rockers and pushrods were pushing down with far more force than needed onto the followers and cam which in turn bought on premature wear on them.