Page 2 of 2
Posted: Tue Sep 15, 2009 12:07 pm
by ChrisJC
I've done a few myself. This is what I think:
You will definitely need a press.
I made up suitable mandrels from old valve guides, old valves and bits of gas pipe.
You need to hold the head upside down, and support it on the valve spring seat. This is the only face that will allow a square push.
They can be a real b*gger.
But if you are tooled up, it's actually pretty easy. No heating required.
Chris.
Re: valve guide removal
Posted: Fri Sep 18, 2009 7:06 am
by jefferybond
bones wrote:Hi all,as it says in title, is there away i can take out the guides myself without a press. i thought there was a post on here already but i cant find it, all advice welcome :) rich
I did mine by heating the head in a normal electric oven, to about 100 deg C. I then got a long bolt that fits through the guide, and a deep socket where the valve spring would sit and pulled it through with that. Quite easy really and didn't need too much force providing the head is hot.
You need to grind the head of the bolt of course so it'll fit through the hole in the head as the guide is removed!
Jeff
Posted: Fri Sep 18, 2009 7:25 am
by topcatcustom
Thats really simple Jeff, no chance of anything going wrong either! How did you put the new guides in?
Posted: Fri Sep 18, 2009 7:56 am
by jefferybond
topcatproduction wrote:Thats really simple Jeff, no chance of anything going wrong either! How did you put the new guides in?
Same way, pulled them in through the bottom. You do need a long bolt though, or a length of studding. You need to be careful that you get them in square though, and also that the threads on the bolt/stud don't mark the inside of the guide. You could wrap tape around the bolt though.
You can use a spacer under the socket to get the installed height correct.
It takes a good 1/2 hour to heat the head up in the oven though - it's a big chunk of metal remember. Might be best to wait until the misses has gone out!
Jeff