I fooked up but how bad? water feed... Updated 18-11 new pics on page 3
Turbo Mini Forums

im sorry if this is a retarded question and not really any help to the thread; but what is the purpose of this?

ps best get it a part :)

turbo water feed at a guess taz

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

If it has busted through and the hole is right at the bottom of the cylinder ie not going to effect compression or come into contact with the rings only the skirt, could you not tap the the hole and screw a grub screw into the stop any water from passing into the bore?

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/

How are you going to get a tap in the bore brains?

I don't think i'd trust a grub screw. Imagine the consequences of it moving at some later date. Piston.. gearbox..other stuff. Chalk it up to experience and get another block. And don't drill into it and get swarf everywhere when its built next time too.

edit:spelling

Edited by jamie@thefatgarage on 22nd Oct, 2012.

I wouldn't write it off just yet, but it definitely needs to come to bits to see what is what. If there is enough depth to get two grubs in there to lock one another in place then I would be reasonably happy with that, not sure I would trust loctite alone in that position with heat and oil.

Schrödinger's cat - so which one am I ???

Once apart, I would try and fix it with a piece of brass rod, 5mm one end 8mm the other, slight interference fit, drifted in and an M10 grub screw at the outside to fix it in.

Then take the water from the head like you should have done in the first place.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

1. use a small borescope to see in there- I think they have about a 7mm head diameter so if you have drilled it to 8mm it should go in.

2. as said earlier, use a compressor and blow air into the hole and see where the air comes out. If it blows out of the waterways to the head then you could be ok.

www.topcatcustom.co.uk

Put the piston at the bottom of the bore and stick ya probe in - then turn the crank so the piston moves up the bore - see if the probe goes in further

I seriously doubt it!

The skirt should be roughly 100mm-105mm down the bore, so use that as a measurement to see if the hole would be inline with the bottom of the piston.

If it is, poke that wire into the hole then turn the engine over by hand, you should then feel the piston rubbing against the piece of wire.

The only way to fix it is to take the engine apart. If it doesn't seal up correctly then all that water is going straight into the box. If the gurb screw comes loose that is also going straight into the box...both scenarios will not be cheap to fix.

As a permantent fix, I would use a long bolt then silver solder it into place. Cut it roughly to length so it screws into the block and bridges into the bore, that way you have 2 points for the threads to hold and it can be done up tight against the head of the bolt on the lug of the box. Once in place, grind the part of the bolt sticking out of the bore down, flush with bore.

Obviously you won't be able to use it as a water feed anymore, but thats a small price to pay to save the block. And a water feed can come from somewhere else.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

matty, by the sounds of it, its not broken into the coolant jacket, which means the drill bit has wandered downwards a considerable amount. also if the piston does not interfere with the hole, the hole is not in the bore wall, since most engines I have built, the skirt reaches the very bottom of the bore. Of course if slipper type pistons have been used, the hole could be along side the narrow part of the skirt.

either way, to miss the coolant jacket altogether, the rdrill has wanderd downward considerably.

Check the pic below. The knoby bit that has been drilled is in the shaddow, you can just make it out.

Attachments:

119.32kb

Edited by Sprocket on 22nd Oct, 2012.

Good shout sectioning that block, those pictures have proved useful over the years.

hang on... after seeing that pic and not being convinced I drilled it on that much of a piss. I have just being to double check. I have only tested the hole at tdc and bdc not actually had the probe in the hole while rotating. and the piston does pass the hole. at bdc the hole is in line with the notch in the piston.
sorry for the confusion