You will have to have them made.. Seppo has had some made but he is at the other end of the earth like me. There was a post quite recent about them. Ted, Tim or John may have a contact.



"Came too close to dying to stop living now!"

What brand or company can I purchase copper head gaskets?  I haven't been able to find a source for different head gaskets.  If you could let me know that would be great.  It looks like if you shave just the dome off the piston it will not affect the thickness of the piston.

Consider O ringing the heads [or block] and use copper head gaskets as well when you re-install.



"Came too close to dying to stop living now!"

Have your machinist be careful not to machine the pistons too much. You'll need at least .200'' wall thickness left on the piston tops. And that's pushing it at 18/20 #. 

Frank/Rebop

Bristol, In ( by Elkhart) 

Just ordered different heads and valves today for my engine.  I found someone to machine the dome off the top of my pistons.  Compression ratio should be approximetaly 8.5:1.  I will also have bigger valves in these heads because the bigger chamber.  Cannot wait to crank up the boost and eliminate my detonation issues.  Will let you know when I get more done.

Just talked to John Mummert today about some dished pistons.  Hope he gets some good feedbackon them.  Once I get some lower compression and a less disturbing piston and combustion chanber we are going to insall a giant Borg Warner and bring the boost up to 18-20 psi.  I know I can get 500 wheel hp out this engine.  Curious to see how well this Y holds together.  The entire lower end is forged and the crank is steel so I think the lower end should be fine.  Can't wait to here from John about some dished pistons.  THERE IS NO SUCH THING AS "ENOUGH POWER"

Yes, you can, Frank . And if you don't, put about 50 % beer to your tank and you'll get the same smell .

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

[Engines really like this stuff Burns cool and clean.. And your race car smells like stale beer[/quote]

HMMM.........................Wonder if I can find jets big enough for my Edelbrock?

Frank/Rebop

Bristol, In ( by Elkhart) 

E85 is a great way to go.  I had lots of detonation and dieseling problems on 91octane fuel.  E85 is about 105-110 octane and it is very reasonably priced.  You will need about 30% more fuel across the board.  Everyone around here with performance builds are running E85.  It delivers great power and it is a lot more stable fuel.  There really is no problem with corrosion, all our current gas is blended with up to 15% ethanol already.  You will love it if you switch.  It is kind of cocky when you pull up and people wonder what that smell is and what kind of fuel you are running.  It is also cool when you pull up the ethanol pump with a 62 F100, you get some funny looks!

Frank corrosive effects on aluminum are with Methanol.. Ethanol is not corrosive in my experience.. There is enough gasoline in it to mitigate some of the problems Regular rubber hoses do get soft over time, but in a race car that does not have fuel sitting in it for long periods it is not a problem. The newer OEM hoses are all alchohol resistant.



Engines really like this stuff Burns cool and clean.. And your race car smells like stale beer