CA20ET LPG project help

[CNHSS1]

Oil squirters lubricate small ends and cool underside of piston crowns. This reduces chances of det. In the case of small ends, they tend to fail through overheating of pistons so its a two fold win :-)

Im no expect on the stock Nissan manifold, bu im sure people on here regularly see 225hp and above without issue.
The log type is probably too big volume for response and torque for your setup

I will email my mate Stew and see what it made, seem to remember 220ish but could be wrong.

Could you not use a DET block as a basis? You get the piston squirters and crank brace as std. Use an ET oil pump sump your CA20 crank. Whats the piston size on your CA20?

[datsober]

Originally Posted by CNHSS1

Oil squirters lubricate small ends and cool underside of piston crowns. This reduces chances of det. In the case of small ends, they tend to fail through overheating of pistons so its a two fold win :-)

I was planning to get 4g63, VW golf gti or BMW ones as they are cheap to get compared to the nissan ones.

Originally Posted by CNHSS1

I will email my mate Stew and see what it made, seem to remember 220ish but could be wrong.

That would be very interesting! especially with 200cc+ extra 88mm stroke.

Originally Posted by CNHSS1

Could you not use a DET block as a basis? You get the piston squirters and crank brace as std. Use an ET oil pump sump your CA20 crank. Whats the piston size on your CA20?

I would love the longer rods as they work best with these horrible shallow port design and the ca20e block can go to 85.5mm bores with ease as they are cast as 84.5mm and can take 2mm more with ease and proven with boost.

The full counterweight cd20 crank Ive got only accepts the ca18det oil pump and Ill be using either 85 or 86 mm pistons first have to do some sonic testing and x-raying of the bores. Id prefer 85mm for extra wall thickness.

[CNHSS1]

have you pics of the crank you are using? is it from the diesel?

youve got me wondering now maybe i need to start and buid, a new motor again!

re the piston squirters, second hand ones can be had for £20 per set, no problem. i have pics of the macining needed to modify an ET block, needs a flat land machining and then break through into main oil gallery for oil supply.

with the ET & DET blocks they dont take much more than 84mm bore and even then if the machine shops a bit dodgy and not centred the bores properly they can break through the bore walls and weep coolant

i didnt realise the cA20 blocks had such thick walls. again any pics would be useful.

where are you based by the way?

[s13eater]

craig, was'nt the walker scimmy a 2lt ?

[CNHSS1]

Yeah at some point, although they blew a number lol. Based on UkCa20 with forgies and rods by Oselli Engineering. In its latter years it was back on 1800 blocks due to easier avaialability. When they sold the car on, it was based on a CA18ET as the new owner promptly grenaded the engine!

[CNHSS1]

Datsober

I put the word around re crank braces and one of the guys i sold one to sti has it unused. I will get him to contact you

Craig

[datsober]

Yes its the diesel crank this is the one I bought they have more if you ask them & only 60euro each!!! beats the tomei stroker BS! Only prob was poor packaging they wrapped them in newspaper in an oversized box instead of just wrapping them in rolled up cardboard so Im a bit worried about hairline cracks etc. Youd think they would make a better effort for being German and me buying 2 of them. The price was excluding freight of course.

http://www.japanautoteile.de/parts/p...2&cat=0&page=1

I will get the info and pics of the ca20det that 2 peeps have done and one in particular on the aussie forums raced in an s12 racecar which he took to 86.5mm which is quite crazy but the longer rod provision due to the taller deck height puts less stress on the bores also. There is a Norwegian or Fin on the US forums that is building a CD20DET which is a heavy block but almost a copy of the 4g63T engine just without the balance shafts and very tall 230mm block compared to 223.45mm ca20e and 204.45-65mm ca18det.

sounds great about the spacer plate! (hope he can post to my destination australia and perhaps take paypal?)

love the ca20det manifold workaround using that nice looking laser or waterjet cut flange very spiffy!

Here is the CA21det using cd20 block and ca18det 4 port head
http://forums.nicoclub.com/ca21det-build-t550380.html

here is a crankshaft comparo ca20 on left and FCW CD20 on right