That4doorKiD Posted June 21, 2017 Author Report Share Posted June 21, 2017 Have you considered EFI on the L20b plus turbo?, That would rock pretty good ;) YES YES I HAVE. I totally wanna go EFI now, I want to run more boost and now I am limited to under 7psi because of my needle and seat size(would mean more fuel pressure also). I have a lean spot also when transitioning into boost if I drive it calmly. Unless I romp on the throttle and put the pedal down, my carb does perfect and no bogging or lean. I'm thinking it's cause the turbo is so huge and spools up like at 3k rpm. Quote Link to comment
That4doorKiD Posted June 21, 2017 Author Report Share Posted June 21, 2017 I need help to go EFI guys! Due to the better capabilities of EFI, I'm looking to move forward with it! I was thinking of ITBs injection and make a plenum for them to push boost through. ITB/plenum combo what I'm thinking because I need to work around the turbo, it would be in the way of the standard position people set up their throttle body I have an L-20b in the shop right now getting bored to 2.3L i think it was .040" or 1mm? but crank getting turned also and oil ports enlarged. Fresh stock block with ARP studs will hold up for some nice power. 1 Quote Link to comment
datzenmike Posted June 21, 2017 Report Share Posted June 21, 2017 For 2.3 you need (preferably) a Z22 crank and block bored from 87mm to 89mm and KA pistons. A 1mm (0.040") overbore L20B is 1996cc. 1 Quote Link to comment
That4doorKiD Posted June 22, 2017 Author Report Share Posted June 22, 2017 Okay so I was thinking more today.... has anyone used the side draft manifolds and machine injector ports on them? I was thinking of just buying a side draft manifold and make a throttle body for it, worked around my set up. http://www.ebay.com/itm/TWIN-WEBER-DCOE-INTAKE-MANIFOLD-FITS-DATSUN-510-610-710-L-SERIES-DUAL-DCOE-/361919022120 Another option would be buying the bolt on side draft pattern ITBs with injectors. But that's so expensive http://www.ebay.com/itm/THROTTLE-BODY-INJECTION-45DCOE-EFI-bare-TB-unit-Weber-Gemini-Escort-Datsun-BMW/272729975281?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D41375%26meid%3D7a124245790847d6aebd8869a6228dc1%26pid%3D100005%26rk%3D4%26rkt%3D6%26sd%3D282527814519 I really don't want to make another manifold, but if I have to I will :yawn: Quote Link to comment
datzenmike Posted June 22, 2017 Report Share Posted June 22, 2017 Bolts for mounting to the head are in the way of the injectors. L28 intakes solve this but a lot of work cutting out the middle two cylinders and welding it back together. If you make your own intake you can put a single bolt hole between the injectors for mounting it. Any throttle body will do. 3 Quote Link to comment
rusty12ver Posted June 22, 2017 Report Share Posted June 22, 2017 http://www.the510realm.com/viewtopic.php?f=10&t=4024&start=15 http://datsun1200.com/modules/mediawiki/index.php?title=Budget_EFI Maybe these can be of help to you, if you haven't already seen them. 2 Quote Link to comment
That4doorKiD Posted June 22, 2017 Author Report Share Posted June 22, 2017 Bolts for mounting to the head are in the way of the injectors. L28 intakes solve this but a lot of work cutting out the middle two cylinders and welding it back together. If you make your own intake you can put a single bolt hole between the injectors for mounting it. Any throttle body will do. http://www.the510realm.com/viewtopic.php?f=10&t=4024&start=15 http://datsun1200.com/modules/mediawiki/index.php?title=Budget_EFI Maybe these can be of help to you, if you haven't already seen them. Both of these ideas look really great. I will see the cost of machine work to get injector ports done, and figure out a way to make the center bolt hole on each side. The single point injection looks super budget friendly and was thinking about that exact idea but, I'm afraid it won't be as accurate as MPI to tune with boost. 1 Quote Link to comment
wayno Posted June 22, 2017 Report Share Posted June 22, 2017 Have you read this thread and talked to this guy? http://community.ratsun.net/topic/52575-interest-in-an-efi-l-series-manifold/ 1 Quote Link to comment
That4doorKiD Posted July 24, 2017 Author Report Share Posted July 24, 2017 Turbo set up for sale 600$ Manifold, fuel pump, carb fuel pr, turbo, and weber. Basically all you need. PM me 1 Quote Link to comment
nl320what Posted July 24, 2017 Report Share Posted July 24, 2017 Love the setup kid, I was going to chime in and say I ran a Turbo in my 510 in each L16, L18, L20B as I thought I was upgrading going larger. It actually didnt get any better as you higher up in displacement by larger crank throws and overbore blocks, they actually flex alot and cause micro-fractures with boost. For a wild motor, the L16 setup for high boost was the cheapest and more fun of them all. Also you can destroke the L16 and increase boost more, and still cost less than anything else as simple. Next step is a KA24 3 valve truck (carb and EFI) motor or a KA24DE DOHC motor, they are a bit more stronger. Not sure if your ready for a SR20DE or RB yet :P Quote Link to comment
datzenmike Posted July 24, 2017 Report Share Posted July 24, 2017 Turbo set up for sale 600$ Manifold, fuel pump, carb fuel pr, turbo, and weber. Basically all you need. PM me Awwwww...... Quote Link to comment
hosestop@msn.com Posted July 24, 2017 Report Share Posted July 24, 2017 You should keep L series Crown turbo kit I had a 521 with an L18 with o -ringed head and turbo z pistons it would throw off rocker arms under high boost at drags and not hurt anything a couple times with chevy springs.Have pics somewhere at home ~! 1 Quote Link to comment
MantisX620 Posted July 24, 2017 Report Share Posted July 24, 2017 Are you giving up on it? What happened? 1 Quote Link to comment
Draker Posted July 24, 2017 Report Share Posted July 24, 2017 Someone find and EFI setup? 1 Quote Link to comment
nl320what Posted July 24, 2017 Report Share Posted July 24, 2017 I'm wondering what happened myself..... maybe he found a complete Z20E or Z24E engine, stole the head off it, swapped onto his L, hooked up Megasquirt ECU, custom turbo, and all is well :) That was an idea I had doing awhile back. So I would run 1 set of plugs for spark and custom fab the other set for direct injection. 2 Quote Link to comment
datzenmike Posted July 25, 2017 Report Share Posted July 25, 2017 No such animal as a Z24E or head. The Z22E 200sx head or Z22S head from a truck are the same, have injector notches and will fit onto the Z24 block..... but just easier to put a rag down the port of a Z24 head and make your own notches with a burr.. The Z series head is a cross flow head and radically different than the L. For one the combustion chambers are 12 cc larger and the compression will take a shit. To begin with, the L series heads will flow much better. 2 Quote Link to comment
nl320what Posted July 25, 2017 Report Share Posted July 25, 2017 In my mind I was thinking Z24 EFI but should have said Z24i for the EFI top end of the later '86 Nissan trucks. I figured the cross-flow design and larger chambers with a Turbo would be a huge plus, its being forced through so naturally flow will be much different than naturally aspirated, which I would then slap an L head on the Z block. But the L and Z still have limitations, best to go newer stronger blocks and parts for power adding with SEFI and turbo support. SR20DE would be my default choice for aftermarket upgrade or whatever you can get your hands on for a budget build till it blows really. 2 Quote Link to comment
datzenmike Posted July 25, 2017 Report Share Posted July 25, 2017 Even an open chamber L head from an L20B will drop the L16 compression to 7.6. A Z24 head with 12 more cc will drop it into the basement. (roughly 6.6) Low compression engines are very inefficient and only run well while boosting. Part throttle will run like a sick dog. 1 Quote Link to comment
That4doorKiD Posted July 27, 2017 Author Report Share Posted July 27, 2017 Nope never would give up B) But my dogleg 5 speed did ! I went to a car meet a few weeks ago and was driving aggressively all night with a little racing here and there hehe, did my last burnout under a freeway tunnel and my freakin' tranny blew! Need money to go EFI and replace the whole drivetrain now ! Parts List and Mods to go: ARP l20b rod bolts ARP l20b Main Studs Stock Pistons .030 over Gasket Kit EFI Manifold TIG MACHINE from eBay Header Flange - make another manifold to clear for exhaust/EFI too Megasquirt 2 or 3 Injectors 3 inch mandrel exhaust stage 2 clutch 5 speed tranny Planning to do everything on the list myself. I really want to make this thing reliable and to daily. Can't wait til I tune it and add 2 step and the antilag :devil: !!! I might hold off on the EFI because of how expensive it will be. If I don't get any offers when I put on CL or eBay I'll know. Then, I will keep my carb set up and clean up with a bigger fuel pump, lines, intercooler+piping and radiator, just make the carb set up very reliable. On top of that I'll have a freshly rebuilt L-20b. I have alot of parts to sell, and also was thinking of just doing SR20 pistons with a .040 bore since the block is still at the shop. But they already finished the work. I literally have to pick it up for my last 20$ deposit lmao. Still need to weld and put together my 280zx struts :crying: 1 Quote Link to comment
That4doorKiD Posted July 27, 2017 Author Report Share Posted July 27, 2017 The first time I ever felt a clutch slip too! On take off 1st and 2nd gear. So much power boost can put! 1 Quote Link to comment
datzenmike Posted July 27, 2017 Report Share Posted July 27, 2017 Maybe tire slip. Clutches tend to slip more in higher gears when they don't have the gearing advantage. 1 Quote Link to comment
hosestop@msn.com Posted July 27, 2017 Report Share Posted July 27, 2017 You need a 3 lb pressure switch and washer bottle hooked to a spray fitting down the carb to keep these from detonating , my weber side draft manifold into turbo would get iced up and turn white, I think I was running round ex. port head. 2 Quote Link to comment
Draker Posted July 27, 2017 Report Share Posted July 27, 2017 Don't toss the dogleg if you remove it! I'd take it, if you weren't so far away. 3 Quote Link to comment
That4doorKiD Posted July 28, 2017 Author Report Share Posted July 28, 2017 Don't toss the dogleg if you remove it! I'd take it, if you weren't so far away. second time it has broken hehe Anyone know if I can use Sr20 rods in an l20b? I need forged pistons and gonna buy SR20 pistons if they can fit. My L20b is .030 over, I'm willing to pay the shop again to go over to 86mm. I read somewhere on the 510 realm that sr20 rods are the same height as L20b rods. But are the bottom large ends the same. Also read about this guys L20b rod combo with SR pistons but I don't know the details or much about [pin height] http://community.ratsun.net/topic/1793-my-73-620-t/ 1 Quote Link to comment
hosestop@msn.com Posted July 28, 2017 Report Share Posted July 28, 2017 L18 turbo all the way higher rev. 1 Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.