1967 Lamborghini Miura P400 (RG)
Service Log by Dan Mooney



 

 



We are delighted to have been entrusted with the care and servicing of this beautiful Lamborghini Miura P400.

The current project involves the repair of a baulky second gear, rebuilding the Weber carbs, rebuilding the clock and dealing with several oil leaks.





 

 

Update report - October 14, 2017
Earlier today legendary Lamborghini factory test driver Valentino Balboni piloted this beautiful Miura for three "aggressive laps" around MSR in Houston. Mr. Balboni had driven the car previously and I am proud to report that he declared our recently completed mechanical work a complete success. He told the owner of the car, who was a passenger for the laps around MSR, "It is like a different car...better than expected."

Click on the photo below for a short video clip of the legend behind the wheel.





Update report - October 10, 2017
I am pleased to report that we have now completed the transmission rebuild and been busy tuning the rebuilt Webers on the Dyno. Earlier today I took the car out for some initial road testing, which went very well.




Click on the image above to watch a short video of the car going through the gears on the Dyno






Road test video # 1
Road test video # 2









Installing the engine and transmission after
the rebuild
Preparing to reinstall rear clip/engine cover










Time to run the car through its paces on the Dyno
Tuning the rebuilt Webers on the Dyno





We have now completely rebuilt the Weber carbs and will be wrapping up the transmission rebuild in the next couple of days. We are on schedule to reinstall the engine and transmission on Wednesday of next week.



Carb prior to disassembly












Air corrector jets were very sooty











Measuring float height










Cleaning carb bodies











Carbs now fully rebuilt












Comparing old (L) and new (R) synchros











Assembling the main shaft with
new synchros










This is the shifter box
New gaskets used as we go back together with
the transmission










Installing the diff spacer (bearing retainer)











Assembling the shifter box






Removing and disassembling the transmission for rebuild.



8mm wrench has apparently been wedged in
place for many years...
Removing the clutch cover











Differential is in good condition























2nd gear synchro is in very bad shape










Comparing new 2nd gear with original (on right)
Comparing old and new synchros










Plenty of evidence this is not the first time the
transmission has been apart






When the time comes to go back together with this project, we will upgrade the headers and exhaust with a superb quality replacement system from Quick Silver in England.



Headers are no longer serviceable
New 304 stainless steel Quick Silver system




I am pleased to report that we now have this project underway. Interesting to note that the engine is date stamped July 27, 1967, meaning we removed it on its 50th birthday!



Work underway
Rear clip will add a little Italian flair to my office
for a few weeks






















Webers will be rebuilt











Engine and transmission removed
Interesting that the engine was removed on
its 50th birthday!










Cylinder heads are also date stamped






The following photographs cover the relocation of the driver's seat belt shoulder anchor, and the installation of new front brake rotors.



Installing a seat belt anchor point over the
driver's left shoulder
Cutting an access panel behind the seat belt
mounting point










Fabricating and installing a panel so back side
of seat belt anchor can be accessed
Belt now positioned over driver's shoulder, rather
than across his neck











Horns replace, now working










Installing new front brake rotors











Lock tabs folded over
Rear tabs had not been previously folded, which
has now been corrected




Today we have been fabricating and installing new brake lines and balancing the road wheels. Previous balance weights had been glued in position where they contacted the calipers when the wheels rotated. There is so little clearance between the top of the calipers and the inner surface of the wheel rim, that you really have to use clip on weights attached to the inner bead. Several of the old balance weights were missing altogether and others were barely attached.



Hard lines to rear calipers were strained and
actually cracked open when removed
New lines were fabricated and installed










New line fabricated and installed much tighter
around top of front right caliper
After cleaning FR inner rim, damage caused by old
brake line contacting inner rim clearly visible










Balance weights had been glued where there
was insufficient clearance for calipers
Cleaning inner rims prior to re-balancing wheels












Bead clip balance weights are a simple fix
to caliper clearance problems
All 4 door hinge pins are now secured with
cotter pins and E clips
















Another productive day working our way through several issues. Unfortunately we discovered a few new issues, such as brake lines rubbing inside wheels, and defective air horns, etc, but we were still able to check off several items today.



Brake line rubbing against inner rim of
front right wheel
Witness marks show where brake line has been
contacting inner rim










Engine cover release handles were missing
grommets on both sides
Missing rubber grommets caused handles to rattle
and clunk around










A little shrink wrap and a custom elliptical rubber
washer was a cheap and cheerful fix
Lock nut was missing from the back of the driver's
side handle - now installed










Door hinge pins need securing
Upper passenger side pin literally about to fall out










#3 fuse was vacant and keyed, so we decided
to use it for the new fan relay
Fan relay now wired in










Fan relay positioned by battery
New circuit breaker




We are happy to get this new project underway. Our first task will be to address several electrical issues. We have already rebuilt the right hand headlamp mechanism, installing a new bronze crank gear, rewired the headlamp motor and rebuilt and rewired the fog lamp switch. You now have fully operational headlamps and fog lamps.
















RH exhaust tip has been pushed up into the rear
valance, causing slight damage to the valance










Slightly damaged chassis tube extension
Brake rotors will be replaced










Damage under front right corner











Small dent at front left corner
Inoperative fog lamps are loose on their mounts










New bronze gear will be installed in RH
headlamp mechanism























Headlamp motor was wired incorrectly











Auxiliary (switch operated) fan was inoperative
Clock is inoperative. Good power and ground, so
almost certainly internals bad.











Both headlamps now operational