DIY Si
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| posted on 22/3/06 at 08:49 PM |
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Pleasant A series engine parts
Just thought you might be interested before I put it all back together. The valves are 37.5mm inlet, and can't remember what size exhausts. Tried
to get a pic down the inlet runner, but camera doesn't like it.
 
Rescued attachment cylinder head small.jpg
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DIY Si
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| posted on 22/3/06 at 08:49 PM |
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And...
 
Rescued attachment cylinder head small2.jpg
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DIY Si
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| posted on 22/3/06 at 08:50 PM |
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And a little closer....
Ps it's not that blurry in real life.
[Edited on 22/3/06 by DIY Si]
 
Rescued attachment chamber small.jpg
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emsfactory
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| posted on 22/3/06 at 09:27 PM |
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Nice. Is it Tracket inlet and cream egg exhaust or the other way round?
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DIY Si
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| posted on 22/3/06 at 09:35 PM |
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um.... no idea at all what you're on about there mate!
Ah, the light dawns bright. Both are Tracker.
[Edited on 22/3/06 by DIY Si]
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owelly
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| posted on 22/3/06 at 10:01 PM |
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Good head matey....
http://www.ppcmag.co.uk
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02GF74
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| posted on 22/3/06 at 10:03 PM |
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those are big valves
are the inlets un-saimesed? have the ports been enlarged?
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DIY Si
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| posted on 23/3/06 at 06:58 AM |
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Whilst I've been told there is a way of un-siameseing an a series, it's really not worth the hassle. The ports are about as big as you can
get. They've all broken through into the push rod holes and been sleeved back to cover the holes. The biggest vavles my local mini place ever
fit is 38mm, so at 37.5 I said they're a reasonable size It's basically one step down from an out and out race head. And used on my
daily run/sprint about.
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Peteff
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| posted on 23/3/06 at 10:28 AM |
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Do you have any problem where the valve seats meet, it looks a likely candidate for cracking if it gets hot enough. My old mini was a sod for burning
exhaust valves.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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DIY Si
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| posted on 23/3/06 at 07:29 PM |
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For some reason it hasn't happened. Yet There's a 15 thou gap between the valves and the engine is only ever run with the lead
replacement stuff. The engine also rarely gets past 75/80 C anyway. I run a large side rad with a heater matrix in the front in series. Doesn't
even get off the stops of the guage in winter! The highest I've ever noticed it was just past 90C after I dropped half the coolant on the floor
at Tesco.
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