Jump to content
SAU Community

Recommended Posts

Hey peeps,

Iv got an R33 that has recently had an R34 motor put into it by a reputable shop.

Im just wanted to double check that this is going to be fine and be reliable long term.

Essentially its just the R34 N/A (block/head) into an R33 so all R33 stuff including the computer running it.

Is this going to be fine or what?

For example, one thing i have noticed is that (via consult cable) the base operating temp is 85 degrees. Which i hear the R34's were designed to run hotter n therefore have a higher temp thermostat in them. But is this going to be ok with the R33 ECU running the show?

Otherwise the timing map etc of the R33 ecu running the R34? are the compressions and cam duartion the same?

cheers

Link to comment
https://www.sau.com.au/forums/topic/413535-r34-na-motor-into-r33/
Share on other sites

Hey peeps,

Iv got an R33 that has recently had an R34 motor put into it by a reputable shop.

Im just wanted to double check that this is going to be fine and be reliable long term.

Essentially its just the R34 N/A (block/head) into an R33 so all R33 stuff including the computer running it.

Is this going to be fine or what?

For example, one thing i have noticed is that (via consult cable) the base operating temp is 85 degrees. Which i hear the R34's were designed to run hotter n therefore have a higher temp thermostat in them. But is this going to be ok with the R33 ECU running the show?

Otherwise the timing map etc of the R33 ecu running the R34? are the compressions and cam duartion the same?

cheers

I may be wrong, but I thought on of the 34s one of there cams were only 234 duration as opposed to the 240 in 33s?

yes id heard there was a difference between the cams.

Tho is the NA motor also different and referred to as the 'NEO'? or only some/later versions? The one i have looks identical and does not have that weird 'lobe' on the pipe going to the inlet manifold like other NEO's iv seen (but maybe that is just a turbo motor part?)

see pic- exactly the same

post-68049-0-09649000-1352699415_thumb.jpg

Hopefully they have changed the ecu for an R34 Neo one (asuming you have a manual trans). Not sure what you mean by weird lobe but R34s have a traction control thingy there (unless your'e referring to the bov). Neos are higher compression and quite a few other differences. Nothing that should be a problem although I think you need the correct ecu (and loom) but problematical if you have an auto.

Nope, no ECU change or anything.

Just a straight motor swap of everything inside the headers...

by that lobe thing i mean this

post-68049-0-14821800-1352853725_thumb.jpg

but then i also see that NEO motors can look like this?

what is what? is one a turbo and one a non turbo?

post-68049-0-73056700-1352853855_thumb.jpg

Top one is det neo, bottom one is NA, looks like you have the r33 intake manifold etc on your Neo engine. It should be fine running all the S2 electronics though probably not as efficiently as it would on the NEO ecu due to differences in the head design.

yeah as i said it is running all of the R33 equiptment (just double checking you are referring to the pic higher up in the thread with teh red engine bay, not the ones posted above...).

Otherwise they have also modded the spark plug signal system as obviously it doesnt use the remote spark sender (i think that is what it is called) that sits at the back of the valley cover next to the fire wall on S1 R33's.

Basically the car runs fine and perfectly and has done for a few thou kms- tho iv only run 98 in it as aware of the higher compression thing. I just want to make sure that it will stay that way into the future!

Only other thing i can think of doing is changing out the thermostat as it is using the R34 one that came with the motor, while if the R33 ecu is running it seeing running temps of the high 80's its going to be winding on the clutch fan pretty hard to try to get it down into the 70's/low 80's as per the R33 parameters?

Anybody on here can comment on what temps they see on the motor via consult to the ECU?

I looked and it is running 86-89 currently with the R34 thermostat in it...

Edited by jjman

I wouldn't be worried about the thermostat, you're talking 5degrees difference between the neo and earlier thermostat opening temps and the Neo is designed to run hotter so you're probably better off leaving it.

alright, sounds good.

tho u sure it isnt going to be pushing the clutchfan harder in order pull temps down that is essentailly impossible because of the thermostat?

Anybody have any idea at what temp the R33 N/A ecu starts pulling timing and adding fuel?

i wouldn't worry about any of that, i put a neo 25 into an a31, ran all the std neo elecs and maifolds etc on an r32 rb25de ecu, ran mint, have sold the car but know it's still going no problem 3 years later

thats what i wanted to hear.

too easy.

Yeah i figured it was all good as it ran fine. Just didnt want to sleep at night thinking there might be a handgrenade in the draveway that i paid good money to have built... :s

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...