[R34 GTT gearbox overheating, new clutch]

Hi guys,

Need some help, I've changed my clutch recently and installed Nismo single coppermix. 

I went for a test drive last weekend and noticed that gearbox is uncomfortably hot. 

What can cause that? Gearbox shifts perfectly with no issues or noises

I've checked brakes as they were swapped as well, seems to be ok

Gearbox oil is Redline mt90 3.5-3.8 litres

Would appreciate any suggestions

I just want to try and eliminate any possible causes before I take gearbox off 

Also, cant smell anything burning, clutch behaves a little unusual, but that might just be new clutch I need to get used to. 

I can only think of slipping clutch, I've noticed that I have to keep higher RPM for it to engage properly. 

 

Thanks, Alex

[Dipstick tube rb25det NEO]

Thanks guys, found 1 on ebay. 

[Dipstick tube rb25det NEO]

Hi guys,

Hopefully someone can help me. I need new dipstick tube for r34. Apparently they are out of production and I couldn't find any online. 

So, is it possible to use RB26 or SR tube and dipstick and still read correctly? Or perhaps someone has one and willing to sell

Thanks

[Please help to identify connector type]

Hi guys,

need some help identifying fuel pump connector. Its R34 stock nissan harness, connector goes from fuel pump to lid.

 

[Not a car guy builds R34 GTT]

Hi guys,

Just a small update. Haven't done much over last month, was mainly ordering parts. 

So, finally all engine parts are sorted, should receive them in a week or so, few items were out of stock and were ordered in. So, everything but crankshaft will be new. Went with CP/Spool combo and complete ferrea head with kelford cams. Meanwhile, I've installed new coilovers, stripped interior and cleaned/fixed few loose bits. 

Need to force myself to finally do all electrical works, battery relocation, fuel pump, boost controller (which I still need to buy) and efdc for my coilovers and also rewire few things.

Then, final engine bay wash and engine will be ready to go in. Hopefully, in 4-6 weeks everything will be done.  

last 3 things to order are injectors, intercooler and boost controller. Ordered Greddy intercooler originally, however current lead time was too long and earliest it might be delivered is late August. So, I will get just regular HDI or Just jap and swap with plazmaman sometime in the future. Any advice on Boost controller? I will put Link ECU, so not sure if there is any benefit of going Greddy profec over standard mac solenoid. Assume both options can be tuned for flex fuel and Hi/Low boost.

[Not a car guy builds R34 GTT]

Bearings were in good condition, both sides of main and rod. Lower parts are pretty much same as top, was actually surprised to see how thick they are. Pistons were burnt, but evenly burnt and no damage or deformation. Not sure if low compression came from block, might have been head. Also, comp test results were suspicious 

1 - 150; 2-145; 3-140; 4-130; 5-120; 6-110.

what are the chances that reputable shop did simple test wrong? 

[Not a car guy builds R34 GTT]

Hi guys,

so finally engine is pulled apart and ready to go to machine shop tomorrow. Did few things in wrong order, which took few extra hours. Main problem was that I took all belts off and started to undo pulley bolts, when I should have loosened them first and then take belts off. That would save heaps of time. Inspected every single part and so far, everything looks ok. Leaking turbo was the only thing I could spot. 
Honestly, I was hoping to see damage to pistons or rings just to prove that engine rebuild was imminent. However, everything was sealed well and all rings are in ok condition. Not really sure how 20 year old good and bad piston should look like. 

Anyway, there is no going back at this stage 😀. 
Next week I will install new coilovers and start cleaning everything that came off engine. Ordered some spring clamps, radiator hose set, various vacuum hoses and fabric tape to rewrap wiring. 
Hopefully, i will know what parts and sizes to order for my engine and they will know exactly how much money left for all the bolt ons. 

[Not a car guy builds R34 GTT]

Finally engine is out, no major dramas. Wont recommend doing all of these alone, gearbox was really dodgy. So, i am planning to take break tomorrow and only buy few supplies. 

[Not a car guy builds R34 GTT]

Quick update, gearbox is finally on the floor and looks like engine only have few last connectors attached on the bottom, which I am planning to undo when engine is lifted a bit higher. Dont think there is anything else left to remove before engine comes out. So, hoping to get it out on Friday and spend weekend stripping it. Last bolt on top of gearbox was a real pain, took me 2-2.5 hours to get to it.

[Not a car guy builds R34 GTT]

Thanks guys, 

not sure why I have not checked other suppliers, Golebys are few hundreds cheaper as well 😊. I am hoping to keep low mount stock manifold and not sure if its possible to get t3 to V band adapter and still fit g30 in or do I need to cut T3 and weld v band. If i am welding then might go with external gate as well. I was after g30-770, it looks like g25-660 is good for around 300rwkw if I read compression maps correctly. I was hoping to get closer to 350-400rwkw. Ive checked sizes of g30 and gtx3076, they are pretty much identical. So hope g30 with adaptor will fit. Do you think $1000-1200 will be enough to modify manifold and make v band dump pipe? Have not been to any metal fabricators, so no idea how they price things. 
@dose at the moment I am considering new cams, will let you know as soon as Engine package is finalised. 

P.s looks like i will have to stay with stock wheels for few months if Im going G turbo 😞. 

[Not a car guy builds R34 GTT]

Thank you, looked more into oil sump and all I could find were baffles for Rb26 which I assume are different. For 25 only found complete baffled sumps. 
Went back to my shed for few hours yesterday to disconnect fuel lines and remaining wiring from engine. Took driveshaft out and starter, so last thing to do is transmission, loosen all bit 2 top bolts, will need to get 14mm spanner and try to get there somehow. Hopefully engine will be out on Saturday morning and stripped during weekend. So, I will drop to machine shop on following Monday. 
Also, had to change few things due to budget limits. I had to choose plazmaman intercooler/plenum or suspension (controll arms/sway bars and rotors) both around 3k. Will most likely go with new plenum and intercooler. Suspension is still ok no issues, definitely want to remove Hicas. Spoke to GCG g25 and g30 series turbos are not due till at least August. So, I will go with hypergear or garret gtx3076 bolt on, plazmaman intercooler, 1000cc injectors to stock rail, walbro 460 and Link ecu mainly because I want to get rid of afm and get straight 3-4” intake pipe. Also, instead of separate gauges I was thinking about haltech ic7 dash screen. Will see when engine is assessed of what needs to be done, then check remaining budget

[Not a car guy builds R34 GTT]

Hi guys,

Really appreciate your help. Head torch os already charged and in my backpack 😌 Complete plan is to go cp/spool combo and main/rod bearings for block after its machined and sizes advised my machine shop, keeping 9:1 compression and suitable head gasket. After head is pulled apart and inspected, I will swap springs and maybe drop kelford’s 244-a2 264/272 cams. Looks like these should give noticeable benefit without any further modifications. Will try to keep stock valves if they are good to use. Shall I swap guides while Im at it? 

Thank you for oil sump baffle idea as I never looked into it and thought its only for motorsports applications. Also, I found generic diy kit for $400, looks like 4 walls and doors, will that be ok?

 I was planning to go with nitto head oil drain, looks like it’s relatively straightforward to install. So, I will need 2 additional holes in sump, 1 for drain and 1 for oil catch can, definitely will install restrictors and new oil pump collar, Ive read that Neo might have N1 pump, is it possible to swap gears only in old pump considering its not damaged?

When engine is put together I was planning to get new belt/water pump and harmonic balancer. 

 

Update on my build, engine almost finished from engine bay side, forgot to drop fuel pressure before I started, so will go back today with small bottle and try to catch as much fuel as I can

Exhaust completely out and I found out I have Greedy turbo back exhaust and not cat back. Still have to take out transmission and starter motor. Hopefully I have not forgot anything and engine will be ready to come out. And once again guys, thanks for information

[Not a car guy builds R34 GTT]

Hi, 

if anyone will read this, I survived day 1. Spent 3 hours setting up. And 5 hours pulling car apart. Going pretty slow, since I have to figure everything out first. Trying to label everything that does not make sense and be as rational as possible. Most of the bolts are really tight and hoses are impossible to undo. Worst so far is a rubber intake on turbo side. 

[Hi, can we be friends?]

Привет, в сиднее 😃 а ты?

[Hi, can we be friends?]

Hello 👋 my friends 

build thread created 

 

[Not a car guy builds R34 GTT]

Hi guys, 

As mentioned in introduction thread, my name is Alex and I am planning to do few mods to my 98 R34 GTT. Car is currently dead stock, only and 3” catback exhaust installed. I have very little experience with cars or engines, so if I will manage to do it, anyone can. There is also a chance that I will fail miserably and run away crying.

 

Ive rented shed for 2 months and currently cleaning it after work. Ordered few basic things today, engine crane and stand, proper socket set, work lights as my shed has none and some miscellaneous items. Will be buying rest when they are needed. Really hope I will have enough light to do some work on weekdays. Otherwise, its Saturdays and Sundays if my wife permits. So overall plan is to take engine out next weekend, strip it and drop to machine shop. Ive booked with Thornleigh Cylinder Heads. Did research on SAU and have not found anything bad about them. However, most posts are really outdated, hopefully nothing changed. Let me know if you know otherwise. Over the phone, it felt like they really know what they are doing and gave me confidence when we were discussing works to be done.

So, when engine is out I am planning to clean up engine bay. Tidy up wiring harness and rewrap it. 

Was considering cleaning/degreasing and spray painting it. My car is black and was resprayed 2 years ago with closed doors. So engine bay is showing its age. Please let me know if anyone did it and how it looked. 

Then I am planning to sort my suspension, already got Tein flex coilovers and will probably buy a set of adjustable arms with rubber bushes, haven’t decided on brand yet. Also, will replace stock rotors and paint brake callipers. 

Hopefully by that time my engine will be back and ready for assembly. When its back in the car I will get new clutch installed, already have nismo sports clutch with new fly wheel. Will get new intercooler, injectors, fuel pump and all usual mods. Will check with gcg on turbo options and act depending on leftover budget. If not much left, will just go with hypergear 45sat. Also, exhaust needs to be replaced, it is 3” cat back at the moment. Turbo will be low mounter with wastegate welded onto stock manifold. 

My overall budget is around 20-23k excluding coilovers and clutch as its already purchased and will need approximately 3-4k for ecu and tune. Obviously, trying to get the most value parts without any sacrifices. So money and time are working against me. Ive decided to buy parts for next stage while starting previous, that should give them 1-2weeks to arrive. However, it appears that general stock for some items in the country is low and I might be screwed over. I can prolong my 2 months rent, but really dont want to. 

 

So, not to bombard you with information and questions ahead of time lets start with step 1. Engine

 

 

Bottom

engine gaskets - 300

Engine rebuild kit-2700

Cp pistons/spool h rods/

main and rod bearings/cometic gasket

Arp head studs - 320

Arp rod bolts 400

 

There is another kit which might be a better value, it includes all of the above and N1 oil pump/water pump/timing belt priced at 4900

 

Head

Need help as Valve train is complete mystery to me. I know what that is and how it works, just dont know components all that well.

 

Option 1. Brand new Ferrea set excluding lifters will be around 3500 from NZ. So, add gst and import tax

 

Option 2. Oem spring set is around 500.

 

Option 3. Supertech set, not sure if they have complete set for NEO head, need to call. But same $3500 based on quick website check.

 

Please let me know what parts in the head are prone to failure and should be swapped. I might potentially go for aftermarket cams as well. Which I assume only changes spring selection. Any suggestions on parts or good suppliers are welcomed. I do feel like replacing every single moving part in the engine with high end aftermarket part is an overkill, but dont know where the balance is. Definitely dont want to build engine and open it again next year, I would rather be over cautious 

My list of brands is generally guided by SAU members and their experience. So, general logic is if everyone goes for CP pistons, so should I 😔

Did my best not to write a poem, sorry if it is too long. Could have been 3 times longer if I was not holding myself. I have 500000 questions. Trying to search and read as much as I can prior to asking

sorry for any spelling and grammar mistakes

🥸

[Hi, can we be friends?]

Thank you, at least someone understands me. All of my friends are so far from JDM and cant even imagine why anyone would throw money into 20 year old bucket with bolts. 😜 

[Hi, can we be friends?]

Hi, 

Thank you for your advice. Not sure about real kms, but it is showing 150k on the cluster. Engine has low compression, havent checked if thats bottom or top leaking as it does not really matter. Was already thinking about rebuild before the test, probably just for my own piece of mind. 
Compression is 1-150 2-145 3-140 4-130 5-120 6-110. But main reason for rebuild is to do it when Im ready, rather than when it knocks. Sadly our engines are not getting any younger, pushing 300+rwkw in 2005-2010 on stock internals is not the same as today. 

I am going a bit backwards, trying to upgrade as many old parts as I can within my budget and then see how much I can safely get out of an engine.
I would be happy with 350-400rwkw, dont think any more than that would be useful. 
Have not decided on complete setup, but will potentially try to fit g30-770 or g25-660 low mounted with external wastegate. Haven’t   found dyno results on RB engines, so not sure if extra investment will worth it.
I will sort mechanical parts 1st and see whats left in my piggybank. 
planning to start my build thread tonight with upgrade/repair list. Still many things are uncertain 🤨 

[Hi, can we be friends?]

Thanks, safety is my first concern as I will be working alone mostly. I will try to be as meticulous as possible. Already have general plan of action in my head. Just ordered $1000 worth of tools and will print 400 page manual tonight. I was planning to create build thread as soon as I start pulling car apart 

[Hi, can we be friends?]

Thank you,

 all of the info regarding actual car is relevant. Last of our engines was produced almost 20 years ago, so no changes there 😌   I was saving money and dreaming about rebuild for few years now and April this year something clicked and Ive decided that time has come. I spent 6 months finding right car and only did 10-15k over 5 years, car is full stock, so should be a lot of work. Not even sure how long that might take ☹️ Surely its going to be a bumpy ride, but I hope everything will work out and it will worth it at the end. 

[Hi, can we be friends?]

Hi Ben, not yet, got only basic spanner/socket sets and impact drill. Was planning to buy proper pliers, torque wrench, screwdrivers etc. will be useful in the future anyway. Also, I do have access to some tools from neighbouring joiner shop and hopefully will borrow some from my work mates. 
Ordering car jack/stands and lights from SCA tomorrow. And will get engine crane and stand next week when engine is ready to go out. I have to make few benches first as shed is completely empty. Winter is not helping, its already dark when I finish work 😞

[Hi, can we be friends?]

Hi, 

Reading SAU for 10 years now and its finally time for me to register.

My name is Alex and I have 1998 skyline GTT. Originally from Russia, came to Australia 6 years ago and bought my car following year. Since english is my second language, please excuse me for any grammar or spelling mistakes especially in technical terms

So, it is finally time to show my car some love and I am hoping to get it rebuild myself and add few mods. Got heaps of useful information from this forum and mastered search button. However, no doubt I will have some specific questions shortly, so just wanted to be polite and introduce myself prior. 
Planning to completely rebuild my engine, add all regular mods and sort suspension. 
Nothing unusual, would be boring for long time members. But, noticed 2/3 of the posts are 10 years old on average and most of the info needs to be updated. Unfortunately, I have no garage and had to rent shed with 1 power point and no lights for the next 10 weeks, hoping to start pulling my car apart this weekend. Really scared and excited at the same time.