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<x-charset iso-8859-1>Most export 65's had flat top pistons, but all 64's had the domies. Crap gas (like todays in the US) and dome top pistons lead to holes in the pistons. Keith Keith Park Top Notch Restorations topnotch@nycap.rr.com 71 Squareback (with no empty nipples!) 65 Notchback (still suckin its gas!) 65 Squareback 75 Opel 87 Golf 88 Rx7 10th Anniversary ----- Original Message ----- From: Scott Taylor <scottbtaylor@earthlink.net> To: <type3@vwtype3.org> Sent: Sunday, December 30, 2001 1:15 PM Subject: Re: [T3] 1500 s engine(s) > >>On the '64 and '65 Square, Notch, and Type 34, were all the "1500 s" > models > equipped with the "high compression" dual carb 1500 engine or were there > two > different dual carb engines on these cars?<< > > There was a discussion about this on the list recently. While nearly all > 1500S cars had domed pistons giving 8.5:1 compression there is evidence > that VW offered an option of a 1500S without domed pistons, which > lowered the compression to 7.8:1, for certain export markets. I'm pretty > confident that my 65 Squareback came with this low compression option, > though I've never removed the heads to confirm it. For whatever reason > VW didn't document the lower compression option very well, and others on > the list have doubted whether it ever really existed. > > Scott > 62 1500 KG > 65 1500S Squareback Sedan > 01 Golf GL > > ------------------------------------------------------------------- > Search old messages on the Web! Visit http://www.vwtype3.org/list/ > > </x-charset>