EXHIBIT 1.1


                          ALLONGE TO PROMISSORY NOTE
                          --------------------------

          THIS ALLONGE TO PROMISSORY NOTE (the "Allonge") dated effective as of
June 21, 2001 is executed by Robert Stemmler, an individual, ("Borrower") in
favor of IMPCO Technologies, Inc., a Delaware corporation ("Company") and shall
become a part of that certain Promissory Note that the Borrower previously
issued in favor of the Company on March 15, 2001 (the "Note") promising to pay
the Company on March 15, 2002, in lawful money of the United States of America
and in immediately available funds, the principal sum of One Million Five
Hundred Sixty Five Thousand Five Hundred Forty Seven Dollars ($1,565,547), with
interest thereon as set forth pursuant to the Note.

          If the Borrower requests the Company to release its security interest
in all or any shares in the Company securing obligations of the Borrower under
the Note and the Company, in its sole discretion, agrees to such a release, such
release will not be effective until the Borrower has paid or caused to be paid
to the Company, as a mandatory prepayment under the Note an amount equal to (A)
the greater of (i) proceeds received concurrently with such release from the
disposition or hedging of the shares so released or (ii) an assurance that, when
agreed the obligations of the Borrower under the Note will result in such
remaining obligations being no less than 50% of the fair market value (as then
quoted on a National Association of Securities Dealers Automated Quotations
National Market Exchange) of shares remaining as collateral for obligations
under the Note plus (B) at the Company's option, interest on the amount so
prepaid accrued from the date last paid until and including the date repaid at
the rate provided in the Note.

          IN WITNESS WHEREOF, the undersigned has caused this Allonge to be
executed on and as of the day and year first above written.

                              BORROWER:


                              ____________________________________
                              Robert Stemmler, an individual


                              Address:  10132 Squires Circle
                                        Villa Park, California 92861