hitman
Part of things
Posts: 645
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Sept 25, 2008 20:16:22 GMT
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stripped the heads down,firstly there are no valve stem seals is this right  ,secondly it has double valve springs are they standard (p6 engine) |
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v8ian
Posted a lot
Posts: 3,765
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Sept 25, 2008 20:38:34 GMT
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Doubles are standard with P5/6 engines, and they do have valve stam seals, but are just circular rubber washers, you cant fit posative seals without maching the heads, but, later sdi heads will fit without loss of compression, but do have decent valve seals, they also breathe a bit better, use later SDiRangie injection heads and the flow is even better, but avoid the late 10 bolt heads, they have huge combustion chambers
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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hitman
Part of things
Posts: 645
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Sept 25, 2008 20:45:26 GMT
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roughly what year heads would u suggest pal,I'm puttin a 3.9 cam in(new)standard bottom end,an ive got a 390 holley to go on also rangerover 4 branch manifolds,am i on the right track?its goin in the little van so not bothered bout massive power just an up grade  |
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v8ian
Posted a lot
Posts: 3,765
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Sept 25, 2008 21:00:24 GMT
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Any of the injection heads, not smog heads though with all the air pipes into the heads,
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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10mpg
Club Retro Rides Member
Posts: 4,253
Club RR Member Number: 204
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rebuildin my rover v8 engine10mpg
@10mpg
Club Retro Rides Member 204
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Sept 26, 2008 8:06:09 GMT
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What pistons are you running? get some P5 ones for 10.5:1 compression ratio, more power and a better noise though super unleaded is a good idea if your gonna run that...
SD1 heads will probably be best for you like has been said avoid the smog heads though you can blank the smog feeds off and they work ok...
Can I suggest getting a better cam? there are some very cheap fast road cams about and while youve got the engine in bits it's gotta be worth it, also make sure you set the lifter preloads on RV8's as they are very susespitible to differences...
Also get a duplex timing gear if yours is more than 30k old it will be fubared and drill two holes in the front of the 'lifter vally' diagonally down to drain oil onto the timing chain as it gets staved easilly and wears out
(i may even have a set of those pistons somewhere....)
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The Internet, like all tools, if used improperly, can make a complete bo**cks of even the simplest jobs...
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,secondly it has double valve springs are they standard (p6 engine)
