Thanks, John. Will check as soon as we can to see just what we have.
Suzie
----- Original Message -----
From: "John Kipping" <johnkipping@inet.net.nz>
To: <spitfire-enthusiast@yahoogroups.com>; "SpitList"
<spitfires@autox.team.net>; "NASS" <nass@yahoogroups.com>
Sent: Thursday, May 15, 2003 7:13 AM
Subject: Re: [spitfire-enthusiast] Cylinder Heads - differences?
> Ignore Mk I and II heads as they are not interchangeable with 1300 and
1500.
> All the cylinder heads are stamped with the part number as follows:
> 515573, small exhaust valve 8.5:1 1300, flat pistons
> 515973, as above but 9:1
> 218140, largest exhaust valves 9:1, 1500 flat pistons.
> 218141, largest exhaust valves, 8.5:1, 1300 flat pistons
> 218142, largest exhaust valves, 9:1, 1300 flat pistons
> TKC1155, large exhaust valves, 1500 flat pistons
> TKC1156, as above but 1300.
> TKC1155/6 do not have the water take off in the RH rear corner.
> Other TKC numbers are a variety of 1500 heads for the US market, some with
> inserts, some with air injection holes.
> The 515573 and 218141 1300 heads can be used on a 1500 engine with dished
> pistons and gives something around 9.25:1, unfortunately the 218141 heads
> are UK and the 1500 dished pistons are US so never the twain shall meet.
> John Kipping
> ----- Original Message -----
> From: "Suzie" <suzie.singleton@virgin.net>
> To: "SpitList" <spitfires@autox.team.net>; "Spitfire Enthusiasts"
> <spitfire-enthusiast@yahoogroups.com>; "NASS" <nass@yahoogroups.com>
> Sent: Thursday, May 15, 2003 12:08 AM
> Subject: [spitfire-enthusiast] Cylinder Heads - differences?
>
>
> > Ok, I should know this and I'm sure I've seen it mentioned on the lists
at
> > some point but after a quick search I'm none the wiser and hoping
someone
> > will have a quick answer.
> >
> > What, if any, is the difference between cylinder heads for Mk3 & 1500
> > Spitfires?
> >
> > I know I was told once that they were interchangeable but can't remember
> any
> > more details than that - and would like it confirmed or denied. And as a
> > follow on, how many varieties of cylinder head were there? Were the MkI
&
> II
> > and IV different yet?
> >
> > Suzie
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