E to DE swap

Post by **Drift** » Sun May 30, 2004 6:08 pm

I have a wrecked 92 240 excellent motor, and a 89 240 that doesn't run. My question is if I can pull out the entire motor/ecu wiring harness, or do I have to splice the wires of the DE harness to the E one?

Post by **michael Walters** » Sun May 30, 2004 6:08 pm

yes you can! you don't have to splice the DE into the E

Post by **Drift** » Sun May 30, 2004 6:08 pm

Thanks. Any tips or suggestions? Are there any problems that I may encounter that you or that you know others have encountered when removing the harness? I've just noticed that most who have done it that I've read splice the harnesses instead of sourcing the whole thing and I just wondered why? (Maybe cause it's easier?)

Post by **michael Walters** » Sun May 30, 2004 6:08 pm

you know what you must save the plug that come off the single cam harness. This plug connect to dash harness and this part will have to be spliced into the twin cam harness

Post by **Nissan_Crazy** » Sun May 30, 2004 6:08 pm

:help does anyone have a wiring guide as to which wires to splice or is it straight forward splicing?

thanks a lot,mike

Post by **michael Walters** » Sun May 30, 2004 6:08 pm

i'll see if i can get you one

Post by **mackdaddy240** » Sun May 30, 2004 6:08 pm

I have a 90 240sx thats in good running condition, however I want to make my 240 turbo and I figured I should at least get the de and turbo it. Also the 90 pistons raise the compressiong in the de block so do you know anyone who has turbo charged a de and put the e pistons in with a turbo? would I need new rods? I know I'll need fuel upgrades and MAFS but not sure other than that.

Post by **Nismo1182** » Sun May 30, 2004 6:08 pm

Nissan_Crazy wrote::help does anyone have a wiring guide as to which wires to splice or is it straight forward splicing?

thanks a lot,mike

Wire it color for color, you will have wires left over, but everything work. Atleast it does in my car.

Post by **Nismo1182** » Sun May 30, 2004 6:08 pm

michael Walters wrote:yes you can! you don't have to splice the DE into the E

Ok I spliced the sohc plug on to the dohc harness. But thats not what concerns me. Im more concerned about the 2 plugs by the battery. You know, the ones you have to rewire for a SR/CA swap.

I looked at both the E plugs and DE plugs and 90% of the wires match color for color except for the other 10% of course.

Are both plugs (wires and all) do the same thing regardless of E or DE motor? Regardless of color.

My motor runs fine, no ECU codes (except 55, which is perfect)

But the car sometimes has a dead spot when I get on the throttle and it gets to about 4-5 k rpms. Sometimes the car doesnt have that dead spot.

I was having problems with the MAF before but now its not throwing a code for it, but I still need to try a diffrent MAF.

I just wanted to know more about those 2 plugs. Because right now, my old SOHC felt faster.

Post by **~*IdIoT bOx*~** » Sun May 30, 2004 6:08 pm

mackdaddy240 wrote:I have a 90 240sx thats in good running condition, however I want to make my 240 turbo and I figured I should at least get the de and turbo it. Also the 90 pistons raise the compressiong in the de block so do you know anyone who has turbo charged a de and put the e pistons in with a turbo? would I need new rods? I know I'll need fuel upgrades and MAFS but not sure other than that.

The E pistons raise to around 11.1:1. You can't run this kind of compression with a turbo. Well you can, but man oh man I don't see anything good coming from that lol.

You actually may want to bump down the compression on the DE.

Post by **Altiman94** » Sun May 30, 2004 6:08 pm

If you plan on a turbo and building your motor to support it you would most likely want to go with a lower compression ratio

Post by **CiPHeR_Tx** » Sun May 30, 2004 6:08 pm

is a DE head on a E block a straight swap or do i need to mod the block at all....keeping the engine N/A

Post by **Nismo1182** » Sun May 30, 2004 6:08 pm

~*IdIoT bOx*~ wrote:The E pistons raise to around 11.1:1. You can't run this kind of compression with a turbo. Well you can, but man oh man I don't see anything good coming from that lol.

You actually may want to bump down the compression on the DE.

Diesel engines run high compression 15:1 or more and run a nice amount of boost

Post by **easymmkay240sx** » Sun May 30, 2004 6:08 pm

That's cuz diesels use compression to combust the mixture.

Post by **Nismo1182** » Sun May 30, 2004 6:08 pm

Post by **andrave** » Sun May 30, 2004 6:08 pm

ok, whats your point then?

Anyway no the DE head onto an E block is not a straight swap.

Post by **CiPHeR_Tx** » Sun May 30, 2004 6:08 pm

what needs to be done?

Post by **Nismo1182** » Sun May 30, 2004 6:08 pm

http://www.nissaninfiniticlub....40742

Post by **[Zero-S]** » Sun May 30, 2004 6:08 pm

bump to the top so I can find it...Working on this right now

Post by **JustinM** » Sun May 30, 2004 6:08 pm

Does the check engine light work when you turn the key on? The SOHC cluster doesn't have this light.

E to DE swap

E to DE swap

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