Andrew, You should check the volume of the W53 head - there is a 45cc version of the L20B engine in Japan but most Oz ones were on the L16 A10 Stanza engine. I guess that a good head machinist could take some material out of a W53 head - it's not something that I've ever thought about or wanted to do as compression is everything to producing cheap power in a NA engine as long as the fuel and spark are controlled, a lot easier to do in my heyday as we had good quality 100 octane. A 66 degree rally cam will do the job nicely with 98 octane and 10:1 and it isn't all that wild and it's very streetable with even a 3.7 diff in a 1600, very friendly with a 3.9 or 4.1. I'm surprised it took 4 heads to find a ULP compatible one, I guess Ozdat folk are grabbing them.
regards Terry -----Original Message----- From: [EMAIL PROTECTED] [mailto:membersozdat_owner@;datascribe.com.au]On Behalf Of GREENBURY, Andrew Robert Sent: Tuesday, 5 November 2002 9:06 PM To: [EMAIL PROTECTED] Subject: RE: cylinder head replacement cont... Terry, Thanks for that. I pulled 4 heads today at the local pickapart - 2 A87 and 2 W53 - before finding one with stainless (ULP capable) valve seats. Can a A87 be made out of a W53 by removing 2cc from the chamber?? If so, what area should the material be taken from? Im thinking I only want a nice streetable L18SS-esque kind of engine - everything more mild than wild... Thanks for the help, Andrew On Tue, 5 Nov 2002, Terry Rudd wrote: > Andrew, > > A W53 on the L18 would be at a guess somewhere around 10:1 so you'd have to > use 98 octane and a cam in the 66-76 degree range to get the best out of it, > also a recurve of the dizzy etc so it doesn't grenade to piston lands - > nothing too dramatic from what I see from here. W53 chamber volume is 39cc, > A87 is 41cc so you can work out the CR yourself - if the L18 is bored don't > forget to allow the extra volume. > > 210 closed chamber heads were used on L16's in Aus towards the end of the > 1600 production run - nothing special these, like small everything. They can > be opened up port wise, but really why bother when W53 and reasonable A87 > heads are still around. > > regards > Terry > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:membersozdat_owner@;datascribe.com.au]On Behalf Of Andrew > Greenbury > Sent: Monday, 4 November 2002 2:19 PM > To: [EMAIL PROTECTED] > Subject: cylinder head replacement cont... > > > Hi everyone, > > Just wondering what people think about using a W53 head on an > L18 block with flat top pistons - will the resulting compression ratio > be too high?? > > Also, I have a 210 head at home, but the combustion chambers are > closed but with 1.5in intake valves - any ideas of its origin?? I > thought all 210 heads were open, while the SSS head had 1.65in > intake valves - this seems a mixture? > > Thanks > Andrew > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@;datascribe.com.au/ ---------------------------------------------------------------------
