Finally got round to pulling the car apart. Eventually got to the head after removing about a million pipes (truly amazing the amount on this thing) and I discovered THIS!!
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Its quite interesting to see the bits usually hidden on the car such as the supercharger...
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Also quite crazy is the inlet manifold and plenum..
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Another slightly worrying discovery (and I believe non related but there anyway are these cracks in the head:
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They are on each cylinder at exactly the same place. Design fault me thinks? Im hoping this will not be a major problem to the head, and infact it will be fine.. (here hoping)
Oh and the head gasket was totally fine which was a surprise..
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So looks like a total rebuild with more power and more boost will be on the cards...
You do realise that I also dont have any manual for this car either :) hehe. I just have to work it all out. But this will be a real challenge getting it back together again now :)
Eh? lol :) I'm going to go for a slight overbore. Slightly lower the compression ratio and aim for 200 BHP :) So a full engine rebuild will be on the cards. I am also going to change the pullys on the supercharger, and also modify the control on it so that it is controlled electronically rather than by the huge pile of vacumepipes it has now..
Why are ports for 1,2 and 4 clean while 3 has gunge both in it and on it? TB water heater hose and breather hose at other end of plenum looks to have leaked too.
Only becomes a problem if the crack causes a leak or a lump falls out. To leak it has to reach the port behind the valve seat or the plug seat. Could cause the valve seat to come loose.
You need a mouse trap to stop them nibbling your pistons. Get the injectors cleaned and balanced? Fit EGT sensor on each port?
Accralite have a good name and list pistons for the 1.3 Micra but
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Nissan Motorsport as a customer (maybe not for the March turbothough). List Prodrive and Toyota as well. Don't think they can listthe F1 engine makers they produce for on pain of death. Seen some photos of some JUN pistons and they had Cosworth on the underside of the crown. I believe a lot of Jap tuning stuff (especially technically demanding stuff like forged pistons, rods and transmissions) comes from the UK and gets repackaged in Japan with a nice price hike.
-- Peter Hill Spamtrap reply domain as per NNTP-Posting-Host in header Can of worms - what every fisherman wants. Can of worms - what every PC owner gets!
Basically above that is a crankcase breather, oil got into that port once it was removed and I was moving it about to have a look at it.
All looks fine in that sense. Just small hairline cracks. In my opinion I would say its ok, bit annoying all the same. I shall strip down the head and have it checked all the same.
The injectors I have discovered are the same as the old Nissan 280Z. Well the part numbers match. Im going to see if there any upgrade options for these.
Yes I've noticed this in the past. Tbh I dont belive pistons from Japan will even be worth looking into, so for now ill contact Accralite. I'm in no rush to fix this and anticipate it not to be on the road until possibly march 2003.
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