Jump to content
SAU Community

Recommended Posts

This is the plan .

Build an R31 with a VH41DE ( Nissan V8 4100cc )

Heres what i have .

I bought a VH41DE half cut for $ 1750 delivered

Bought the wagon for off ebay for $ 900 . It has a mint body . Replaced the diff ( $ 80 ) , replaced leaky water pump ( had a spare ) . Got it registered 3 weeks ago .

I plan to keep it looking as stock as possible , even down to the hubcaps .

Am only interested in going fast in a straight line , drags and on the salt flat .

Deliberately chose the 4100 cc engine to suit the class ( F = 3000 - 4300 cc ) i want to run at the salt lake speed trials .

post-9523-1153349151.jpg

post-9523-1153349216.jpg

Edited by dondesoto
Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/
Share on other sites

OK . Here is a pic of the wagon i raced this year at Lake Gairdner speed trials . Was running a RB30DE . Best average speed over 1 mile was 141 .187 MPH ( 227.21 kmh ) . I saw 152 MPH ( tacho reading ) at the end of one run . Engine basically stock with 370 cc injectors , extractors and 2 x rb25 throttle bodies , apexi safc 2 , and thats it . Standard cams and head .... NON TURBO

post-9523-1153350314.jpg

post-9523-1153373194.jpg

Edited by dondesoto
Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2342582
Share on other sites

Nice work on getting the VH41DE.

What sort of Gearbox did it come with? Auto or manual? and what sort of box will you be using?

do you plan on modding the engine or running it stock? How much will it set you back to cet the new engine in and running in the car?

Is your other R31 with the RB30DE for sale :(

Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2342808
Share on other sites

only ever seen them with auto's behind them... AFAIK they didn't get sold with a manual option..

and every combo we've tried doesn't work, rb/vg/sr etc boxes all have a different bell housing setup, the VQ boxes might go but not sure..

however locally in perth someones developped an adaptor plate to slap a 25 box behind it, well any RB box really, but 25 for the strength, needs a custom flywheel, but its workable, PM me if you need more info on who to speak to

Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2343421
Share on other sites

Mods will be limited to extractors ( home built ) , cams if i can get the stock cams ground , malpassi fuel pressure reg , Apexi safc 2 and a decent air intake .

I will be doing the installation myself and am going to tackle the wiring up too .

I will be using the auto box the engine come with , cheapest and easiest option for now . Fitting an rb25det box would be a good option , but but would cost more than my whole half cut by the time its fitted .

The red car is not for sale yet, as it will still be my daily driver until i finish the blue cars conversion . Hoewever will be selling the rb30de engine at a latter date , maybe towards the end of the year .

Its not a priority but it would be nice to have it all done for a total of less than $ 5000 ( including purchase of car and half cut ) . 150 Mph + for less than $ 5000 , i like .

Edited by dondesoto
Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2343723
Share on other sites

Spent many hrs on saturday , disecting the harness . had pulled out all engine bay harness and in car harness . Massive amounts of wiring . Found a total of 6 computers . Only using 2 of the computers , engine management and auto trans . Believe i have all the wiring i need after chopping out one big box full of surplus wiring and electricals .

Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2351061
Share on other sites

Spent many hrs on saturday , disecting the harness . had pulled out all engine bay harness and in car harness . Massive amounts of wiring . Found a total of 6 computers . Only using 2 of the computers , engine management and auto trans . Believe i have all the wiring i need after chopping out one big box full of surplus wiring and electricals .

Good luck, the wiring is probably the hardest part of setting something like that up.

Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2351209
Share on other sites

it is, took my mate a few solid nights and some weekend time to sift thru everything tracing wires to see where they went and what they hooked into, the amount of surplus in the looms is astounding..

AH tell me about it . Have spent many hours unravelling harness . Thought i had it right , then discovered i had chopped out 16 wires too many that go to the transmission ecu , a big BUGGA . Have had a lot of help from NICO forum in sorting that prob out .

  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/126859-vh41de-into-r31/#findComment-2357397
Share on other sites

  • 2 weeks later...

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

    • What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day  
    • While I was waiting for the new parts to come in for the charge pipe and radiator I decided to do some turbo modification. The drive pressure (exhaust backpressure) was a lot higher that I thought it should be. For 32lbs of boost drive was 55lbs. The turbine housing is a 1.10AR and my turbo builder has suggested to go to a 1.25AR. To test if a larger AR would do anything to reduce drive pressure AND not spend any money I decided to hog out the divider in my current housing. I removed it from the inlet and the whole way through the housing.  After reassembly and testing it doesn't look like this modification did anything for reducing drive pressure or requiring more fuel (making more power). Oh well, it was worth a shot. We'll get some data at the track if it makes it past the 60ft. I also machined a $7 shift knob off Amazon to fit my Stillway shifter since I didn't like the Stillway shift knob. Next on the list was the radiator replacement and fabrication of a new intercooler tube that had no silicon coupler. No pictures of this - I was short on time each night after work to get this done and didn't stop to take pictures.  Next was to get the clutch disks out and replaced. Previously when installing the dogbox I had ordered a set of the same sintered iron disks I had been running because I switched to the 26-spline input shaft. I thought it was odd that they didn't have any markings or brand name on them like all my old disks had but installed them anyway. At the track I could not get the clutch to lock up using my normal strategies. After two track nights I reached out to the clutch manufacturer and ask their thoughts. They said they had to switch the material out because they were having trouble getting the original material and that this new material would not take to being slipped very well.  So out with the first set of 26-spline disks and in with the correct material 26-spline disks. While I had the trans out I added an inspection/service hole. I've wanted one of these for a while. Now I can have a look at things and change the front cover shimming when needed (clutch wear). I hustled and got the clutch change done in a few hours on a Saturday. Hopped in the car and drove home. On the way home I did a 1-3 pull. When shifting from 2nd to 3rd the core plug in the back of the cylinder head popped out and dumped all the coolant. Thankfully I was only 30 seconds from home and coasted it there. Datalog showed nothing unusual and 2.5psi of coolant pressure. That plug has been in there since 1992 but I guess it worked its way out. Pulled the trans AGAIN and replaced the plug, JB welded it in, and made a brace. Also deleted the head drain I had added in during the bearing issue fiasco.  I am currently changing my boost control plumbing to make it cleaner. After that is done I'll make another attempt at getting past the 60.
    • Are you 100% sure this isn't tune related?
    • 140-150 across the board. At this point hoping the grounding harness fixes it. My grounds are all tied to the chassis and none to the battery. For SR and KA that’s never been a problem for me but had a few other guys here and Reddit who told me RB really like a very solid ground setup tied to the battery so going to try that next, I’m stumped if that doesn’t do it. Never had a car have spark and fuel and not fire off before. Only thing I can think is the spark is intermittent/weak because of grounds nothing else really makes sense at this point 
    • I am having close to the same issue. Can you help me with what wire you grounded to get your pump to trigger?
×
×
  • Create New...