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abrahamk wrote:
I'm new to the list and this
is my first go at a Datsun project car, I've got a few technical questions,
the answers may be of assistance to others as well.Here
they are, thanks in advance. Nick. What
do the various Datsun models weigh?I am specially
interested in the Stanza, 200B, and Bluebird.
Stanza A10 = 915 - 960 kg
200B (N810J) = 1098 - 1115
kg
Bluebird 910 S1 = 1015 kg
Bluebird 910 S3 = 1110 kg
How much metal can
be ( safely! ) removed from a L20B flywheel?
Don't know, most ppl run a 240K
(C110) or Skyline (C210) flywheel with good results.
I need to remove approx. 2mm
of metal from the head and/or block to give a ~10:1 CR.The
std. combustion chamber volume is 65cc (swept vol. = 488cc), I want to
bring it down to ~55cc including the small amount of reprofiling needed
around the inlet and exhaust valves.Can it be done,
and has anyone done it (or does everyone use the L18 head)?What
is the minimum deck clearance allowed ( approx. 10thou??? ) and can the
slightly dished pistons be shaved flat and remain reliable to >6000rpm?(See
supercharged Bluebird feature car)How much
can the head and deck be shaved? Also, the L20B
head appears to have poor 'squish' areas in the combustion chamber, specially
considering the dished pistons ???
Flat top pistons will give ~9.3:1
on stock bore, I would think you're being a bit optamistic reducung the
head volume by 10cc without striking drama. If you going for street
use just watch how high CR you go whatever method you decide is economical,
the new lead additive super that's being phased in around the country
is crap for high compression engines.
I am currently re-building
a L20B from a Bluebird TRX donor vehicle for use in a road/club car,
I intended to use a Stanza shell to give the best power/weight ratio -
but they are (relatively) expensive and hard to find.
... and they usually are full
of rust.
regards,
Terry
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