Page 2 of 2

Posted: Tue Aug 08, 2006 11:21 pm
by Mats
Hahaha! :D

Integrale + Snow = ever so much fun. :D

Posted: Wed Aug 09, 2006 9:36 am
by MR2 Zig
Barry,

With the copper head gaskets you will need to torque it down, run the engine, and torque it again about 4 times.

Cometic here in the US makes copper head gaskets for just about anything and their website (cometic.com i think) may be helpful to you.

Good luck,
Scott

Posted: Wed Aug 09, 2006 11:39 am
by Barry
Scot,thanks for the heads up..
I have now made my own gaskets..Its time consuming but I know that they are dimensionaly correct..

I think I may as well start posting what I believe is going to be my ultimate d.i.y headgsket solution for even the most severe duty engine..

Ive e-mailed the concept to a few knowledgable persons and have had some good feedback.thanks guys..

I decided on copper as the previous setup using a std. gasket was a total buggerup.This is on a high boost 4 cyl engine..

I have never played with copper gasgets beore as I felt them to be a bit agricultural..Now that Ive used it,Im rather convinced as to the feasability of copper in its annealed state..

I machined reciever grooves in the sleeves for a stainless ring that is machined in an "L" shape.The pic says it all.

The "L" shaped groove protrudes through the copper gasket by 0.3mm.
This is designed so that the single groove or ridge can cut into the haed as its all torqued down.The ring is also 0.2mm thicker so it protrudes more that the Alfa sleeve protrusion spec.This is so it can clamp the copper gasket more vigiourisly..

The idea here is to have a twofold clamping effect.The first is the copper gasket being clamped in the normal fashion,ie: between the head and sleeve..Secondly,the ring or ridge that protrudes through the copper gasket and cuts into the head surface..

Posted: Wed Aug 09, 2006 7:58 pm
by MR2 Zig
If you've see or tried this then disregard.

I think the big hp drag engines here they use "O" rings around each cylinder. they go in a groove machined into the block (or sleeves in this case). I think they are made of a soft (relatively) grade of stainless.

these engines make 2000+hp with superchargers and nitromethane fuel.

Your "L" rings are a similar approach but a square or round section ring may be simpler to deal with.

just an idea,
Scott

Posted: Wed Aug 09, 2006 10:54 pm
by Maurizio
I 've used a similar pincing technique in vacuum appplications, between flanges. Which is more or less standard for the real deep (<10^-6) vacuum chambers. The copper used was 99% pure and oxigen free (hard to find).

Posted: Thu Aug 10, 2006 6:49 am
by Barry
I went to a local steel merchant and asked for a sheet of copper 1.2mm thick.
I have no idea what the grade is..

Posted: Fri Sep 01, 2006 12:35 am
by Hamishm00
Barry wrote:I went to a local steel merchant and asked for a sheet of copper 1.2mm thick.
I have no idea what the grade is..

Bb, are they working????

Posted: Fri Sep 01, 2006 7:32 am
by Barry
Hamishm00 wrote:
Barry wrote:I went to a local steel merchant and asked for a sheet of copper 1.2mm thick.
I have no idea what the grade is..

Bb, are they working????
Like a good roll in the sack!!!!! The best yet,H..Ive already made for Bella..She is getting some as well.. 8) 8) :D

Posted: Tue Nov 21, 2006 2:46 pm
by jol
Barry wrote:I went to a local steel merchant and asked for a sheet of copper 1.2mm thick.
I have no idea what the grade is..
How did you continue from there? original gasket on top, draw outlines and nailfile?

Posted: Tue Nov 21, 2006 8:03 pm
by Barry
Original as a template..
Its rather hard,so you can drill and cut..carefull though,copper tends to grab and snatch with power tools.. :?

Posted: Wed Nov 22, 2006 3:24 pm
by jol
Barry wrote:Original as a template..
Its rather hard,so you can drill and cut..carefull though,copper tends to grab and snatch with power tools.. :?
Discussed with a friend and he suggested water or laser cutting..didnt think of that. Also suggested a parts dealer from Finland, will check that one up :)