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Can someone detail the costs involved in a going from
a SR20DE car to having a SR20VE. Here in Aus we can get the motor for about $4000 AUS this includes the computer, wiring harness and all that sort of stuff. What other things would be needed? And how much in total would a conversion cost? USD will be ok (basically double it for our poor aussie dollar :P)
The engine is the major expense. You need to connect the exhaust and that's about it. It's mostly labor. If you use the VE computer like Miss_Nismo (Also down under) then you don't even need something to trigger the cams. I would replace the clutch while your at it.
JWT lets you use the stock harness plus IIRC its tuned better for the motor. If you were to use the stock VE harness you would probably have to rewire some things which could be a headache. Someone correct me if I'm wrong though. Hope that helps.
using the stock ve ecu is fine as long as the plugs fit unless you get an N1 ecu which is wired different. if you want to know the benefit of the wolf ecu just ask shoes59 how his is running.
Originally posted by purist
I'm a bit confused about all that is required for the swap into a B13.
If you get the JWT ECU do you need to change anything about the wiring harness?
You would need to change the wiring of the distributor for the external ignition coil. I don't the know details because I have a B14.
What is required so that the distributor runs correctly?
See above.
How does one activate the VVL?
Either with the JWT ecu, the MSD rpm activated trigger, or anything else that can trigger at a given RPM.
Is it not done by the JWT ECU?
It can be done by the ECU, but JWT charges an additional $265 and the ECU output only has one output meaning you can only trigger the VVL cams at the same time as opposed to seperately like you would with the MSD trigger.
Do these motors generally come with there own exhaust manifold?
Yes but without the downpipe. You will either need to fabricate a downpipe, wait for the upcoming Hotshot VE header, or try to source one from Impul or Fujitsubo in Japan.
What is missing from the VE motor that would be shipped to my door so that it is fully installed and running correctly?
Generally all you need to make it run is an ECU, manifold downpipe or header, and something to trigger the VVL cams.
Can our trannies handle the output of this motor?
Yes.
__________________
Chuck Nibbana
Retired VE owner
Forever an SE-R owner at heart
2005 BMW M3
What are the power output differences and price differences between the MSD unit and JWT ECU as far as triggering the VVL?
What is different about the JWT ECU from the stock DE ECU mated with an MSD triggerr? Is the best combo a JWT ECU with the MSD trigger or does it matter?
I don't understand all the rewiring of the distributor jargon. Anyone know more about this process?
Originally posted by purist
Thanks for that post. Very informative.
What are the power output differences and price differences between the MSD unit and JWT ECU as far as triggering the VVL?
Power output differences? None really. But another disadvantage of the JWT ECU is they are going to set the VVL trigger to go at XXXX rpm. But then you can never change it unless they reprogram it. With the MSD setup you can either use a pill or dial to choose any RPM you want. Much more flexibility.
What is different about the JWT ECU from the stock DE ECU mated with an MSD triggerr? Is the best combo a JWT ECU with the MSD trigger or does it matter?
The difference is the JWT is programmed for the VE injectors and MAF, and has a higher RPM cutoff and no top speed governor. You can use a standard DE ECU with the DE MAF. Your car will run a little rich because of the bigger injectors with the DE ECU. I think the best combo is the JWT ECU and MSD trigger.
I don't understand all the rewiring of the distributor jargon. Anyone know more about this process?
On my car for example, the stock distributor had a different harness. A 2 pin and a 6 pin. The VE motor came with an 8 pin harness that was totally different so I had to rewire the original harness to work. On a B13 you have an external ignition coil, so you would have to rewire your car to work with the VE internal ignition coil or rewire the VE distributor to work with your external ignition coil. Either way it shouldn't be that hard.
So, can you have the JWT ECU programmed for the VE without the VVL swich?
And, if this is the case, does that mean that the VVL will not be activated unless there is an external switch installed (MSD or JWT ECU setting for example)?
What does it cost to have a DE JWT ECU programmed to work for a VE motor?
the distributor rewire is not difficult but confusing when you actually get to rewiring let me know and i should be able to help. i would recommend leaving all of the plugs for a de on the harness...double wired just incase you have to go back to a de for some reason.
Originally posted by bigtom harness...double wired just incase you have to go back to a de for some reason.
That's good advice. I would have NEVER thought about that if you hadn't mentioned that.
I'm starting to plan for my swap too. What would be the tradeoffs if I were to just use the VE ECU? (besides rewiring things)
I'm leaning toward the JWT ECU ($$$) and RPM swiches. If I were to use the RPM dial thing, would I need a separate one for each cam?
__________________ Sam Bass / 1998 200SX SE-R
Atlanta, Georgia
Mods: JWT POP Filter, 91 Intake Cam, Stillen 4-1 Header, N1-style muffler, Front and rear STBs, Motivational Rear Strut Mounts, Hyperco/AGX's, ES Front & Rear Motor Mounts, ES Shifter Bushing, Pacesetter Quickshifter | In the works: AD22 Brakes
Originally posted by 98SERwTricks
I'm starting to plan for my swap too. What would be the tradeoffs if I were to just use the VE ECU? (besides rewiring things)
I'm leaning toward the JWT ECU ($$$) and RPM swiches. If I were to use the RPM dial thing, would I need a separate one for each cam?
Here are some ideas
1) Get a G20 ecu and run it with the DE MAF and VE injectors.
2) Wait for people like me to try the VE program that JWT has recently sent out.
3) Once you get good feedback from others send your G20 ecu in to get programmed.
Yes you use a seperate one for each cam.
I would not have JWT program the rpm triggers. With the MSD you can change it easily. With JWT it requires a reprogram. What if you get some new cams and they need a different trigger point? JWT would take a lot of time, MSD 30 seconds.
B.T.W. The head gaskets are on their way to Andreas so I should have a VE in my hands sooner the latter at this point.
Edit: All indications are that the new JWT program is good. It looks like you and I have the same car. Both 98's. I have a JWT/VE program on a 95 ecu sitting in my closet.
Yeah, I can't wait to get rid of that damn intake manifold! I might just get a earlier ECU and take care of that early. Anybody have a G20 ECU laying around?
Originally posted by JDM_2ner really??? why are you selling it??? is this the ecu with the new jwt program that runs good???
Yes, it's the one with the latest chip that woke up the motor. I'll likely be selling it cause I'm having the car dyno tuned next week using a different ECU.
(basically double it for our poor aussie dollar :P)
