Well Hello Stud!

[zooma]

Took a pic of the broken header bolt yesterday, shown arrowed as no. 1  ... able to get a nut fully threaded on to what's there so hopefully that will help to get a good weld on it. Found a mobile welder local to me so gonna try that... if all else fails, "Slabby" Dave has offered to help... top bloke, a true OSS'er.

Struggled to find the spark plug drain holes that Slim mentioned... is that what I can see shown as no.2 in the pic???.

Finally guys, whats that casting for, shown as no.3

[Deleted]

get a good blob of weld on that + sum heat ........... easy as the dentist pulling your teeth ? the block thing,s num 3 i thought they was for emission,s is other place,s around the world ?? i am sure fbob will tell us ? or other clever oss ........ the other bit ?? no idea ? maybe for knocking a chisel in there to remove the cyl head ? when you have left a bolt in where you didnt no one was there ask p4ddy ha ha...... if you struggle with the nut let us no i am off sat. cheer,s dave. smiley-shocked003 smiley-shocked003 smiley-shocked029

[p4ddy]

Yea a chisel sounds about right. I've never quite understood how my exhaust ports have half the metal missing but that sounds a perfectly ham fisted numpty thing to do. So I guess one owned my slabby in it's previous life.

[fatblokeonbandit]

2 is the plug hole drain, and 3 is the pairs casting only drilled on Californian mark 1's and all mark 2's, and if you have enough thread to screw a nut on you could try a drill guide. like this

[zooma]

Jun 29, 2015 19:21:12 GMT @gsexr said:

get a good blob of weld on that + sum heat ........... easy as the dentist pulling your teeth ?

Ta Dave.. This b'stard bolt is really holdin' me up now as is flippin' doctors appointment this week or early next. Still gotta pull the motor out but need to order a big fook off breaker bar cos the engine bolts are tighter than a duck's you-know-what. Will let ya know how things work out... or not!

Jun 29, 2015 20:59:20 GMT fatblokeonbandit said:

2 is the plug hole drain, and 3 is the pairs casting only drilled on Californian mark 1's and all mark 2's, and if you have enough thread to screw a nut on you could try a drill guide. like this

Cheers FBoB... not sure if my plug drain holes are blocked?.. tried pokin' them with a bit of wire but didn't seem to wanna know?. That's a proper niagra falls you've got gushin' through yours!!.

I ordered somethin' similar to that drill guide from the States last week QuickCenter

.... if I'd known there was somethin' like that over here, I wouldn't have bothered smiley-rolleyes008

Don't mean to appear thick... but what's goin on in pic no.3?. Allen bolt with a spacer behind it or some gadget screwed onto what remains of a broken stud to get it out?

Thanks Lads

[fatblokeonbandit]

I filled the plug hole with water to flush it out and chevk they are clear, with the plug in obviously..
the drill guides i made myself, just 8mm allen bolt with a hole drilled in it on a lathe, the spacer had an 8mm thread so the guide screwd in and the guide goes on the remains of the stud..and that is it i n the 3rd pic attatched to the broken thread ready for drilling, i made 3 sizes , 3mm, 4mm and 5.5mm, drillrd very carefully with loads of cutting fluid after that removed the guide and used a 6.5m drill and then retapped it.. works really well as lomg as you use really sharp drills and go slow, no guarantees but ive used it a few times now with good results

and can be done with engine in, if you have the room and long series drills

[zooma]

Jun 30, 2015 4:23:16 GMT fatblokeonbandit said:

I filled the plug hole with water to flush it out and chevk they are clear, with the plug in obviously..
the drill guides i made myself, just 8mm allen bolt with a hole drilled in it on a lathe, the spacer had an 8mm thread so the guide screwd in and the guide goes on the remains of the stud..and that is it i n the 3rd pic attatched to the broken thread ready for drilling, i made 3 sizes , 3mm, 4mm and 5.5mm, drillrd very carefully with loads of cutting fluid after that removed the guide and used a 6.5m drill and then retapped it.. works really well as lomg as you use really sharp drills and go slow, no guarantees but ive used it a few times now with good results

and can be done with engine in, if you have the room and long series drills

Thanks for the explanation mate, can better understand that pic now. Damn, really must try and get a small lathe sometime for makin' stuff like those guides.. think something just 12" or so between centres would do.