12g295 head!what to do
Turbo Mini Forums

unlucky V,

we have one just like that siting in the workshop stores V how blody upseting :(

This is scaring me !

I bought a 295 a while ago and now realise I didn't check it properly so far ...

Is bead blasting the best option ?

I red somewhere heads can be welded ?

Rusty by nature

My machinist says that he can fit two valve seats and thi might possibly work. After all, it depends on how deep the crack is. However, as heads are relatively cheap, it's better to find another one..

I now ALWAYS bead blast chambers BEFORE starting modifying heads. It's fucking annoying when you've spent 20hours on a head and when you grind the seats you find cracks. Never again!

I learned that the hard way too Vegard. I even spent €250 on a die grinder to mod my own head only to find it was cracked after the work. I ended up just getting a head from Benross as I got very pissed off aout it

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse

He really did even a cuppa and a kimberley did not cheer him up :(

if they are cracked between the seats there SCRAP!

i havent got the yellow bible to hand, how thick should the deck be between the face and the bottom of the oil gallery on a std head?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Viz states 0.060"

Dont do it.

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."

reason i ask paul is this:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...:MEWA:IT&ih=016

but it sounds as though this is about standard too

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

I've done a couple with slightly less than .060 Still works.

Edited by Vegard on 10th Nov, 2008.

I have a 12g295 head if your interested joe. It was reconditioned a few years back, not sure whether it was skimmed at all though, it doesnt appear to be.

cheers soap, the problem was my cr was too low, and its ethically wrong to skim a decent 295 (i have no evidence to base this on, but its generally regarded as fact)

but paul being a gent has sorted me out with some flat top pistons to use instead of dished ones which wil raise the cr without having to skim the head

most heads start out 2.75" thick at the factory, so get the measureing wand out to see if yours has been skimmed or not, may be of use to someone else on here?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Oh right ok, I just saw your link to the head for sale on ebay and thought you may be looking for another head! whoops!

I will check mine thoroughly for cracks and check the thickness as well when i get back home at christmas from uni. I will put it up for sale then when I get round to it :)