Jump to content
SAU Community

Recommended Posts

Dropped a new 32 rb26 into my 32 gtr. Took it for its first test drive about a month ago and it was boosting to 1 bar but seamed very very laggy and just didn't seam to have any power.

It was blowing smoke so we decided to clean the cooler piping as it was full of oil from the previously blown engine.

Test drove it last weekend and it wont boost past 0.5 bar and still feels extremely laggy. It feels like you hit a brick wall at 0.5 bar.

We have cleaned the afm's put new lower gapped plugs in. We are thinking to try different coil packs aswell.

Another thought is it could be a blocked cat. That might explain the lag as I am running hks 2510 turbos it should be extremely resposive.

Any ideas?

Link to comment
https://www.sau.com.au/forums/topic/262900-new-26-in-my-gtr-not-boosting/
Share on other sites

as the boost starts to approach 0.5bar it starts to slow down.. if you keep your foot held flat it, it never revvs out nicely on 0.5bar.. it starts missing n the misses seem to get bigger as it revvs out.. also it doesnt just hit 0.5 a bar nicely, it starts slowing down about 0.4bar. the misses arent sporadic like the usual electrical ones that come and go.. its pretty much the same every time, we've cleaned afms, changed spark plugs and checked vacuum leaks...

Edited by jarrod83

I actuslly think the base timing is off by 2 degrees so ill check that first thing tomorrow.

Turbos are both spinning fine and i picked up my consult cable today so i will have a look at what the ecu is doing tomorrow.

I have anotherfuel rail so i might swap over regs aswell

Ok so had a play with the GTR on the weekend.

Put on a high flow can changed coil packs. This has helped(Car much more drivable reving a tad quicker) but problem still not sorted.

We got out the trusty old Motec lambda meter and wow on boost she if hitting 0.663 lambda or 9.75afr

We changed over the FPR to another stock one i had and checked the return line for blockages.

My injectors are yellow topped??? If i recall correctly the 32 RB26 stock injectors i sold last month were not yellow.

Could after market injectors be causing the over fueling(Assuming they are after market)?

Also i noticed a regulator type thing on my spare fuel rail on the return line the rail currently on the engine does not have this?? any one know what it is used for?

Any ideas would be a big help.

Did you even check the fuel pressure before swapping out the reg?

Bit silly to swap it without confirming that was the problem...

No i haven't had the ability to check the fuel pressure I will be borrowing a gauge kit to check it.

Reg was swapped due to the top of it being able to rotate which didn't seam right as the spare was on solid.

Not really silly as swapping didn't help meaning more than likely it was not the problem(That is of course assuming the spare is in good working order)

You dont know the spare was in working order, because you haven't tested either... that was my point.

Replacing parts, without the proper checks, will just mean simply that you'll take forever to find the true cause

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...