We look forward to its progress so well be here waiting its birth. As well as your big block a12
Well with my 1k I want to keep the earlier pre 86 serial number to eliminate the cat for starters.
The exercise is to try and get an engine that has OHC (or DOHC) crossflow, 2ltrs and has a wide option of 5 speeds available. This is along with pre86 specs of no catalyc converter and able to run twin 45s, bigger cams and exhaust to give the 1k have more oomph than I can afford with a worked a-series, renault gord, fiat tc or blood curdling rotor.
If the ca20 with pollution mode tune makes 98hp then what can be done to make this cheap engine make more by using parts available from the ca range and still keeping it a budget oldskool build?
The ca20 rods wont handle much abuse I hear so what can I use to maybe replace these like ca18de ones? or other nissan ones?
It would be nice to deck the ca20 if its taller to help for clearance and also increase the factory 8.6 to 1 compression, make the block lighter (2-4 pounds?) and helping clearance of course in the 1k.
I figure the ca would be a better proposition than a NA E15 as its already got the dizzy in the right position, cubes, its rwd with many avail gearboxes, has twin cam head avail and more budget development potential....
Also it would be better than an L series (sorry Harry) as a TC head is available cheaper and easier than an LZ special.
Originally Posted by Nizmodore at nissanforums.com:
"Doing a twin cam conversion on a CA is just like on a RB30E twin cam conversion.
I can do a CA20 with a CA18DE head. The oil and coolant galleries match rite up....np
The only diffrence is that the CA20's crank has 8 bolts on it to attach the flywheel, while the CA18 and 16 twincams have 12.......so you'll have to use a CA20 flywheel.......or a RB20.....
the Result? A twin cam CA20DE.......If you want pics, PM me
And I live in Austalia....so I can't build one and send it to the states...."
Also found that 23% better flow can be achieved with 2mm larger exhaust valves and a little cleaning up of the ports.
anymore info anyone....?