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History
Purchased in 1977 from Ft Worth, TX. Had been
used as an ocasional street car and autocrosser. In 1994
converted to a vintage racer.
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Technical Details
work in progress 9/2006
notes spreadsheet
in MSExcel, not updated anymore- not for
competitors eyes!
Engine Lotus
Twin Cam head over ford 1588cc bottom end
compression 11:1
+20 overbore,
Big valve head (1.56/1.32 dia),
Carbs: Twin DCOE40 with 34mm chokes,
Cam .0.438 lift, 258 duration
Headers - 1.5dia primary 4-2-1,
had made at Kirk Racing for $475 - should
be cheaper now that they have a jig, ask for invoice # 23926
photo
Distributor Lucas
non-vacuum, modified advance curve
full advance ~39deg
ignitor unit
rotor NAPA EP41/Oreily D570, Cap NAPA EP40/Oreily
c532
Clutch
8.5" disc, standard pressure plate
difference in flat face
and
round nose bearings
fork - non bent i hope!
flat style throw-out bearing FKC 6/W 1-3/8
Gearbox
front bearing SKF 6206 NRJEM,rear bearing NSK 6206 NRC3, input
seal 045F7052 (bean number), tailshaft bush Ford 71WG 7041 BA 1499297,
Steering
Rack - Burman unit, used in capri/ MkI escorts, photos of innards, with description
can't find a source for the pinion bearings, but can replace the
balls. Inner rod end rebuild kit
still available.
Tie Rod End - marked PN01A 62, 3/8"dia pin, 1/2"
male, taper 0.45" to ~ 0.5"
Rear Suspension
Live axle
Limited Slip Differential (not sure what type - previous owner
installed)
Two trailing links, two leading links. One of the trailing links
has a triangulation arm that mounts to the center of the chassis below
the diveshaft for axle lateral location.
This mount has cracked
many times at the junction of the fabricated
sheet metal mount and transverse chassis tube, on the "tension" side of
the mount. Beefed up with gusset plates welded in.
Looking
at photos (example
- that tire should be about 1/4" within the fender,
not 1 inch out!), lateral axle movement was apparent. Made
polyurethane (shore 95) bushes for the two split bushes, and added a
transverse tube in suspension arm to beef things up and for peace of
mind - photo
Split Bushings -
Harrisflex TP 8549 also used on early Lotus 51
1/2" ID Dave Bean
Shocks - AVO
Springs - stock,
cut some
Cooling
standard 7 S4 radiator recored 3 row, interior nose ducting
11 row oil cooler with thermostat
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Seven
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