cylinder Heads

[new to this]

are the studs in the cylinder head at an angle

i ask because i have a head in the machine shop at the moment, and they rung me to say some one has drilled the stud out but drilled through the valve

can this head be repaired and if so where do i take it

dave

[stagmuffin]

hi dave ,if they have drilled into the valve chamber it may be incredibly difficult or impossible to repair beacause of access or lack of it.your machine shop would normaly be able to provide a weld repair service if they were a half decent lot have you asked.any pics to show what is required???
steve

[new to this]

hi dave ,if they have drilled into the valve chamber it may be incredibly difficult or impossible to repair beacause of access or lack of it.your machine shop would normaly be able to provide a weld repair service if they were a half decent lot have you asked.any pics to show what is required???
steve

steve
had the phone call to say come in to the shop

dave

[martin]

That's so incredibly clumsy and incompetent they owe you a pair of Millenium heads. Quick, grab it and run out ! Martin.

[dasadrew]

are the studs in the cylinder head at an angle

dave

Yes. See the pictures in the cylinder head article in the technical section.

Interesting turn up for the books - usually it's the private owners who would make a cock up and take it to a machine shop for them to repair!

[GDPR]

Have I read this differently? The word someone could have been the previous head owner who did it, and the machine shop reporting it.

I wouldn't have drilled - the head I did a month ago had the stud cut flush on the gasket face, and level with the head on the nut side, with the added complication that someone had being smashing the hell out of the stud from the top causing the stud to split and swell in the head. I carefully ground down the stud into the head with a dremel for about 10mm to remove the damaged bit, stuck it in the gas barbie at 180 for 20 minutes, and then 10 minutes extreme violence with my air chisel got it out. The head is still straight so a good result was had, as it had only minimal skimming and was still able to use std gaskets.

I was ready to make a drilling jig if necessary to get the right angle, but the gas barbie won again.... I even cooked with it that night.....

[Seaking]

Russ You must have one hell of a pair of barbie tongs to lift a hot head off the barbie.

[GDPR]

Well you should see the size of the burgers I cook.....

[AlanD]

Russ congrats mate you got 5000 posts lol this is the one, the one at 8 am was 4999 and this one is 4999, so have they put on limit lol cant keep a good man down

[new to this]

ive been to the machine shop to pick up my head today,and where i had thought the machine shop had made a mistake and drilled through the valve, tring to get a broken stud out,you can see it was someone else thanks you mr ebay
its a hole about 3-4mm through the exhaust valve chamber, you can not get to it to weld,so would it cause problems if left,or you could drill the stud out to fit a sleave that would seal the hole

p.s i also took the head to another machine shop for a second back up of ideas, he took one look at the head ,and said to much rust bin it

im not keen on the bin it idea

dave

[SUTTY1]

I curious?? Why they say to much rust in aluminium?

[new to this]

I curious?? Why they say to much rust in aluminium?

looks like not much antifezze has been in it ,to be fair it does need a lot of welding

dave

[SUTTY1]

sorry you got this problem, i mixing-up rust in steel/iron with corrosion in ally

[nib]

looks like not much antifezze has been in it ,to be fair it does need a lot of welding

dave

Dave I think you need to put a photo of the cylinder head faults on here,someone might have an idea how to fix.
Mark

[jbuckl]

Hi Dave,

If the head is repairable, and from the description it probably is take it to:- (or get the incompetant machinist to take it)

GPD welding:-
G P D Welding Developments Ltd
Chestnut Drive Business Centre
Kelsey Cl
Nuneaton
Warwickshire CV11 6RS

02476 351134

I can vouch for their specialist skills in the repair of aluminum castings especially cylinder heads.

They repaired some very corroded heads for me, and built up the whole fire-face!

They also arranged to get the post repair machining done too. (by GPD developments)


I saw them build up the ports and combustion chamber with weld on an historic race head (climax) that had been smashed to bits when a conrod broke .... that was some achievement.

One club member used them after my recommendation.

He was certain they couldn't repair the stag head as 2 or 3 previous attempts had been unsucessful on the same inlet port breakthrough (20 odd mm down the port) by another welder.

He was surprised at their level of ability.

The cost of the welding was reasonable in my opinion.

However the running around is a bit of a pain I admit.

Regards
julian

P.S. its best to post a photo or 2 if you are able to for this type of stuff.