It's been a bit of a wait although it really hasn't been an issue as we're not ready to put it in the car yet but we have now finally picked up our rebuilt L20B.
Here she is hanging on the engine crane after we got it home, we had to go to Frankston Bolt Centre in Hartnett Drive to get new bolts for the engine stand as the one we bought won't work out of the box with the L Series. The jury is out on the rocker cover, I really want the one we have with "Datsun 1600" stamped on it so we'll probably repllace it
Here is the sheet with the numbers from the engine dyno
Max Torque of 150Nm is achieved at 4500rpm and from there it stays relatively flat till it drops away around 6000rpm
Max Power is 169.6 horsepower or about 126kw achieved at 6250 rpm
The max torque figure is what I am really happy about, it should mean pretty decent in-gear acceleration with a good kick in power if you wind it out.
Main specs of the motor are
- 76 degree cam
- Custom fabricated and enlarged sump with internal baffles
- Bigger valves and ports
- new springs, rockers, lash pads etc...
- Re-graphed Bluebird s@ dizzy
- Fly cut flat top pistons
- New rods, bearinngs etc..
- more stuff I can't remember!
Pretty much everything is new with the exception of the block and the head of course. The Webers I originally bought in good faith off gumtree were totally screwed. Apparently the ming mong that had them tightened the idle screws so hard he bent them - not to mention the corrosion. The engine dyno guy said he spent a solid day trying to get them to work but once they started belching out flames from the trumpets he called it quits! So on went some new 45 DCOE's and they had it finished pretty quick. I like the linkage setup too, I wasn't keen on getting that big rod that other setups use (not sure which is better though!)
On the trailer with all the bits from the Frankenturbo motor to head home
Z22 crank from the turbo, I might hang onto this as we're thinking of rebuilding our other 1600 which currently has the L18 in it
This is the head from the turbo motor which the builder told me is actually bent.
It's had a bit of custom work done over the journey too, probably no good anymore unless you can straighten it?
So next steps are to put the new clutch on, get it in the car, bolt it up to the gearbox, put the oil pressure thingy on, run all the fuel lines, hook up a fuel pressure guage and then see if we can get it going - although I reckon we may defer the last tricky parts to APS in Frankston, especially considering they have a dyno and it's going to need a run on that in case there are any final adjustments we need doing