Griff 500 core plugs location, removal and fitting

[grm500]

Got water leak from rear passenger side of engine, below sparks plugs. Car has been laid up 2 years+ in garage (unheated.


Think too much water escaping (not a drip, a steady flow like poured slowly from a glass, coming down exhausts where comes under chassis behind engine) to be head gasket, so need investigate core plugs in first instance.

How many, and where on Griff 500 - I gather there is one on each side of block? How do you access and remove?

Any other suggestions welcome - eg what plumbing lurks at back and below engine which could be leaking?

Thanks

Graham

[GreenV8S]

Check for water coming from the heater supply/return pipes too. These can rust out dumping water into the top of the valley, where it will run off at either end. If it's leaking that much you should be able to feel where it's coming from.

[blaineuk]

3 each side of the block, 2 behind fly wheel, i have just changed mine, took about 30 minutes, but my engine is out of the car.

[Ballistic Banana]

thought there were 9. 3 either side and 3 at the back?

Would do the check as Pete Says first.

BB

[Boosted LS1]

^ The middle one at the back blanks off the camshaft.

[spend]

Make sure someone didn't loosen the drain taps before laying up?

[Boosted LS1]

spend said:

Make sure someone didn't loosen the drain taps before laying up?

and if they did you'll need new tap washers and a stop cock with a ballcheck return valve.

[grm500]

Thanks for those suggestions, will check out at weekend.

Should I discover it is a core plug(s) how do I access in situ? Not sure I'm going to like the answer, hoping there is a straightforward way.....


Graham

[Boosted LS1]

To remove it you tap it with a drift, hard at the top or bottom.. It'll rotate like a throttle butterfly and go horizontal. Then you can easily pull it out with pliers. Tap the new one in and use a smidgen of sealant. I use an old socket as a drift when installing them.