Glen
--Previous Message--
: Thanks again! All great info. I've seen
: some aftermarket cams that are up
: torque and keep the power band lower.
: May be the right move. I've also seen
: mention of a 'UK spec' cam for the 1500
: that is better? Is this real? I
: presume, if they were different, it's
: just a bit more lift for the higher
: compression motor. If there is a 'UK
: spec' OEM cam that might be easiest
: with good results?
:
: --Previous Message--
: Glenn it sounds like you're just going
: to
: warm it up a bit, overbore, get the
: compression up, I would ditch the stock
: bumpstick and get something with a
: little more lift (mid-range) but don't
: go crazy with duration because it moves
: the power band up where it will hurt
: the engine.
: Do a good "blueprint" on it,
: make sure all is to spec, make sure the
: main housing bore is to the low side of
: spec, rods recon, check cam journal
: bores (bearings can be retrofitted),
: you can open up the center main feed a
: little (it helps oil #2 & #3 big
: ends), check the crank thrust very
: closely.
: If you deck the block you'll have to
: redo the counterbores at the top for
: the head gasket seal.
: For carburettor (s), at the RPM that
: you'll be running, a single 1 1/2inch
: would likely be enough up to around 5k
: RPM.
: Try to find some Vandervell VP2
: bearings, not the "A" suffix
: bimetals, and I recommend having the
: bearings treated (polymer dynamics
: texas or other), you have to adjust
: your crank journal dimensions to suit,
: the coating is .0002-.0004 per shell, I
: shoot for final clearance of .002
: big-ends, and .0025ish on the mains.
: The bearing coating isn't snake oil,
: it's real; the piston skirt coating is
: also very effective, and worth
: considering.
: Glen
:
: --Previous Message--
: Hi Glen, (great name!) So this does
: already have a set of 4 into 1 headers
: believe it or not (only mod) and good
: match to the exhaust ports. I'm
: disassembling now, it looks good, head
: off, will pull the lower end from the
: car likely this week end. If nothing
: appears grossly wrong (spun bearing
: etc) then the next stop will be the
: machine shop to mic and turn, bore,
: surface. I take it from your comment,
: the stock cam is OK then with a 30 over
: bore and higher compression pistons? No
: current plans for the head other than
: surface, guides, possibly seats unless
: there is a tried and true formula,
: porting and so on?I really appreciate
: the help!!
: --Previous Message--
: Hi Glenn and welcome!
: The Kalispec 1500 is a gutless wonder.
: It's easy to get power out of it,
: anything you do is going to make it
: better, ie compression, cam, carbs (I
: recommend SU HS4), a real header...
: but.... BUT... keep in mind that the
: 1500 is a low RPM engine.
: It's not happy much above 5000-5500
: RPM; this is due primarily to the
: weight of that lump of a crankshaft.
: There are a few things that you can do
: to improve reliability, I can post
: after you get into it, but no matter
: what you do it's RPM limited.
: Probably the most important thing is to
: not over-cam it, the profile that works
: well in a high-revving small-crank 1300
: may not be the best for your
: application.
: Glen
:
:
: --Previous Message--
: British car noob..apologies in advance.
: I
: am looking to build up my son's 1979
: Spitfire motor and while I'm good with
: old Chevy's etc..BL is new to me. His
: model is a California 1500 with 7 or so
: :1 compression and associated
: emissions. I understand the UK/EU model
: was about 9:1, better performance (will
: be losing the emissions). My thinking
: is to bore to 30 over, buy the
: "high compression" pistons 30
: over from Rimmer. The crank is likely
: good for a simple turn. Is the stock
: cam (new) appropriate? is there a
: different cam for increased compression
: motors? It has a weber
: intake/carb..stay with this or find the
: dual strombergs? Currently has a rather
: complex and cumbersome electronic
: ignition with vacuum "retard"
: (never heard of such a thing). Planning
: general head work surface, guides,
: etc..is the stock head/valve specs OK
: for this set up? Any
: help/pointers/pitfalls/stupid buttons
: would be greatly appreciated!
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